Multiquip Septic System ST 1500 User Manual

OPERATION AND PARTS MANUAL  
Submersible Pumps  
Model ST-1500 Series  
Revision #0 (10/04/04)  
THIS MANUAL MUST ACCOMPANY  
THE EQUIPMENT AT ALLTIMES.  
 
ST-1500 SERIES SUB. PUMP TABLE OF CONTENTS  
Multiquip ST-1500 Series Submersible Pump  
Submersible Pumps  
ComponentDrawings  
Here's How To Get Help ............................................ 2 ST-1503A Pump Assembly ................................26-29  
Table Of Contents ..................................................... 3 ST-1503CUL Assembly ......................................30-33  
Parts Ordering Procedures ....................................... 4 ST-1503A/CUL Electric Motor Assembly........... 34-35  
Safety Message Alert Symbols ................................. 5  
Rules For Safe Operation ...................................... 6-7  
Dimensions ............................................................... 8 Terms and Condition of Sale  
Specifications (Pump/Control Box) ...........................9  
General Information ................................................10  
Components............................................................11  
Float Switches .........................................................12  
Float Switch (Piggy-Back) .......................................13  
Float Switch (Control Box) ......................................14  
Parts .....................36  
Operation ................................................................15  
Control Box Installation ..................................... 16-17  
Clean-up .................................................................18  
Maintenance ...........................................................19  
Troubleshooting (Pump)..........................................20  
Performance Curves ...............................................21  
Wiring Diagrams (Electric Motor/Control Box) ........22  
Explanation Of Codes In Remarks Column ............24  
Suggested Spare Parts ...........................................25  
As a continuing effort to update  
our parts book, contact the  
MULTIQUIP literature department  
for the latest revision of your  
"Operation and Parts Manual"  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 3  
 
ST-1500 SERIES SUB. PUMP PARTS ORDERING PROCEDURES  
When ordering parts,  
please supply the following information:  
Dealeraccountnumber  
Dealernameandaddress  
Shipping address (if different than billing address)  
Returnfaxnumber  
Applicable model number  
Quantity,part number and description of each part  
Specifypreferredmethodofshipment:  
Note:Unlessotherwiseindicatedbycustomer, all  
orders are treated as Standard Orders, and will  
ship within 24 hours.We will make every effort to  
ship Air Shipmentsthe same day that the order is  
received, if prior to 2PM west coast time. Stock  
Ordersmust be so noted on fax or web forms.  
FedEx or UPS Ground  
FedEx or UPS Second Day or Third Day  
FedEx or UPS Next Day  
Federal Express Priority One  
DHL  
Truck  
Place Your Parts Order Via Web or Fax  
For Even More Savings!  
Here’s how to get help...  
Please have the model and serial number  
on hand when calling.  
MULTIQUIP CORPORATE OFFICE  
18910 Wilmington Ave.  
Carson, CA 90746  
Email: mq@multiquip.com  
800-421-1244  
FAX: 310-537-3927  
Extra Discounts!  
All parts orders which include complete part numbers  
and are received by our automated web parts order  
system, or by fax qualify for the following extra  
discounts:  
PARTS DEPARTMENT  
800-427-1244  
310-537-3700  
Ordered  
via  
Standard  
orders  
Stock orders  
($750 list and above)  
FAX: 800-672-7877  
FAX: 310-637-3284  
Fax  
3%  
5%  
10%  
10%  
MAYCO PARTS  
800-306-2926  
310-537-3700  
Web  
FAX: 800-672-7877  
FAX: 310-637-3284  
Special freight allowances  
when you order 10 or more  
line items via Web or Fax!**  
FedEx Ground Service at no charge for freight  
SERVICE DEPARTMENT  
800-421-1244  
310-537-3700  
FAX: 310-537-4259  
TECHNICAL ASSISTANCE  
800-478-1244  
FAX: 310-631-5032  
FAX: 310-537-1173  
No other allowances on freight shipped by any other  
carrier.  
WARRANTY DEPARTMENT  
800-421-1244, EXT. 279  
310-537-3700, EXT. 279  
NOTE:DISCOUNTSARESUBJECTTOCHANGE  
MULTIQUIP INC.  
18910WILMINGTON AVENUE  
POST OFFICE BOX 6254  
CARSON, CALIFORNIA 90749  
310-537-3700 800-421-1244  
FAX:310-537-3927  
Direct TOLL-FREE access  
to our Parts Department:  
Toll-free nationwide 800-427-1244  
WWW:multiquip.com  
PAGE 4 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1500 SERIES SUB. PUMP SAFETY MESSAGE ALERT SYMBOLS  
FORYOUR SAFETY ANDTHE SAFETY OF OTHERS!  
HAZARD SYMBOLS  
Rotating Parts  
Safety precautions should be followed at all times when  
operating this equipment. Failure to read and understand the  
Safety Messages and Operating Instructions could result in  
injury to yourself and others.  
NEVER operate equipment with covers,  
This Owner's Manual has been  
developed to provide complete  
instructions for the safe and efficient  
or guards removed. Keep fingers, hands,  
hair and clothing away from all moving  
parts to prevent injury.  
operation of the Multiquip Model ST-  
1500 Series Submersible Pumps.  
Before using these pumps, ensure  
that the operating individual has read  
and understands all instructions  
in this manual.  
Accidental Starting  
ALWAYS place the power source circuit  
breaker or ON/OFF switch in the OFF  
position, when the pump is not in use.  
SAFETY MESSAGE ALERT SYMBOLS  
The three (3) Safety Messages shown below will inform you  
about potential hazards that could injure you or others. The  
Safety Messages specifically address the level of exposure to  
the operator, and are preceded by one of three words: DANGER,  
WARNING, or CAUTION.  
Sight and Hearing hazard  
ALWAYS wear approved eye and  
hearing protection, if required.  
DANGER  
You WILL be KILLED or SERIOUSLY injured if you DO  
NOT follow directions.  
Respiratory Hazard  
WARNING  
ALWAYS wear approved respiratory  
protection, if required.  
You CAN be KILLED or SERIOUSLY injured if you DO  
NOT follow directions.  
CAUTION  
Equipment Damage Messages  
Other important messages are provided throughout this manual  
to help prevent damage to your submersible pump, other property,  
or the surrounding environment.  
You CAN be INJURED if you DO NOT follow directions.  
Potential hazards associated with the ST-1500 series  
submersible pumps operation will be referenced with Hazard  
Symbols which appear throughout this manual, and will be  
referenced in conjunction with Safety Message Alert Symbols.  
This submersible pump, other  
property, or the surrounding  
environment could be damaged if  
you do not follow instructions.  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 5  
 
ST-1500 SERIES SUB. PUMP RULES FOR SAFE OPERATION  
ALWAYS make sure submersible pump is grounded.  
CAUTION  
NEVER use gas piping as an electrical ground.  
Failure to follow instructions in this manual may lead to serious  
injury or even death! This equipment is to be operated by  
trained and qualified personnel only! This equipment is for  
industrial use only.  
DO NOT place hands or fingers inside pump when pump is  
running.  
ALWAYS make certain that the voltage supplied to the pump  
is correct. Always read the pump's nameplate to determine  
what the power requirements are. The ST-1500 series  
submersible pumps require 115VAC, 60 Hz (single-phase)  
for normal operation.  
The following safety guidelines should always be used when  
operating the ST- 1500 Series Submersible Pumps:  
GENERAL SAFETY  
DO NOT restrict the flow of the discharge hose as it may  
DO NOT operate or servicing this equipment  
before reading this entire manual.  
cause overheating.  
Be careful of discharge whipping under pressure.  
Make sure pump installation is accordance with national  
and local electrical codes.  
This equipment should not be operated by persons under 18  
years of age.  
ALWAYS have a qualified electrician perform the pump  
NEVER operate this equipment without proper protective  
clothing, shatterproof glasses, steel-toed boots and other  
protective devices required by the job.  
wiring installation.  
ALWAYS mount the control box in a vertical position  
protected from the elements.  
NEVER handle pump's AC power cord with wet hands.  
NEVER let an extension cord or plug connection lay in water.  
NEVER stand in water while AC power cord is connected  
NEVER operate this equipment when not feeling  
to a power source.  
well due to fatigue, illness or taking medicine.  
NEVER use a pump with a defective, frayed power cord.  
Check the power cord on the pump for cuts in the insulation.  
NEVERoperatethisequipment under the influence  
NEVER use a extension cord that is frayed or damaged  
where the insulation has been cut.  
or drugs or alcohol.  
ALWAYS make certain that proper extension cord has been  
selected for the job. See Table 4.  
NEVER attempt to use the power cord as a lifting or lowering  
device for the submersible pump.  
When raising or lowering of the submersible pump is  
required, always attach an adequate rope or lifting device  
to the correct lifting point (handle) on the pump.  
NEVER use accessories or attachments, which are not  
recommended by Multiquip for this equipment. Damage to the  
equipment and/or injury to user may result.  
ALWAYS place the pump in an upright position on a platform  
before using. The platform will prevent the pump from  
burrowing itself on soft sand or mud.  
Manufacturer does not assume responsibility for any accident  
due to equipment modifications.  
Whenever necessary, replace nameplate, operation and safety  
decals when they become difficult read.  
NEVER operate pump on its side.  
DO NOT allow the pump to freeze in water.  
NEVER leave an open pump chamber unattended.  
ALWAYS check the machine for loosened threads or bolts  
before starting.  
The electrical voltage required to operate the pump can  
cause severe injury or even death through physical contact  
with live circuits. ALWAYS disconnect the electrical power  
from the pump before performing maintenance on the pump.  
NEVER operate the submersible pump in an explosive  
atmosphere or near combustible materials. An explosion or fire  
could result causing severe bodily harm or even death.  
PAGE 6 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1500 SERIES SUB. PUMP RULES FOR SAFE OPERATION  
ALWAYS make sure that electrical circuits are properly  
grounded per the National Electrical Code (NEC) and  
local codes before operating pump. Severe injury or death  
by electrocution can result from operating an ungrounded  
pump.  
. Emergencies  
ALWAYS know the location of the nearest fire extinguisher.  
NEVER use this pump to remove water from a swimming pool  
when people are in the water.  
ALWAYS be sure the operator is familiar with proper safety  
precautions and operations techniques before using  
submersible pump.  
ALWAYS check pump oil level only when pump is cool.  
Expansion due to heat may cause hot! oil to spray from the oil  
plug when the oil plug is removed.  
ALWAYS know the location of the nearest first aid kit.  
DO NOT attempt to thaw-out a frozen pump by using a torch  
or other source of flame. Application of heat in this manner  
may heat the oil in the seal cavity above the critical point,  
causing pump damage.  
DO NOT pump water greater than 104° Fahrenheit. Also DO  
NOT pump liquids containing acid or alkali.  
ALWAYS check strainer before pumping. Make sure strainer  
is not clogged. Remove any large objects, dirt or debris from  
the strainer to prevent clogging.  
In emergencies always know the location of the  
nearest phone or keep a phone on the job site.  
Also know the phone numbers of the nearest  
ambulance, doctor and fire department. This  
information will be invaluable in the case of an  
emergency.  
ALWAYS use a large basket strainer when pumping water  
that contain large debris.  
ALWAYS flush pump after use when pumping water  
concentrated with heavy debris. Flush with clean fresh  
water. It is very important to always flush the pump before  
turning it off to prevent clogging.  
ALWAYS store equipment properly when it is not being used.  
Equipment should be stored in a clean, dry location out of the  
reach of children.  
ALWAYS read, understand, and follow procedures in  
Operators Manual before attempting to operate equipment.  
Maintenance Safety  
NEVER lubricate components or attempt service on a running  
machine.  
ALWAYS allow the machine a proper amount of time to cool  
before servicing.  
Keep the machinery in proper running condition.  
Fix damage to the machine immediately and always replace  
broken parts.  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 7  
 
ST-1500 SERIES SUB. PUMP DIMENSIONS  
ST-1503A, AND CUL  
25 ft.  
(7.6 m.)  
NPT 2  
13.81 in.  
(351 mm.)  
7.20 in.  
(183 mm.)  
Figure 1. ST-1503A, CUL Dimensions  
PAGE 8 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1500 SERIES SUB. PUMP SPECIFICATIONS  
TABLE 1. SPECIFICATIONS  
Model  
ST-1503A  
ST-1503CUL  
Submersible Trash  
Pump  
Centrifugal  
Submersible Pump  
Type  
Impeller  
Cast Iron Ductile  
2.00 in. (51 mm)  
Cast Iron Ductile  
1.50 in. (38 mm)  
Suction & Discharge Size  
72 gallons/minute  
(273 liters/minute)  
45 gallons/minute  
(170 liters/minute)  
Maximum Pumping Capacity  
Max. Solids Diameter  
Max Head  
1.00 in. (25 mm.)  
34 ft. (10.3 meters)  
0.5 HP (0.37kw)  
1Ø 115V  
N/A  
28 ft (8.5 meters)  
0.33 HP (0.25kw)  
1Ø 115V  
Power  
Voltage Phase  
Starting Amps  
25  
42  
Running Amps  
6.2  
6
Control Box Required  
Thermal Overload Protection  
Rotation  
NO (Note 3)  
YES  
NO (Note 3)  
YES  
CCW (Note 1)  
180 cc. (Note 2)  
Monthly (300 hrs.)  
3550 ± 30  
CCW (Note 1)  
150 cc. (Note 2)  
Monthly (300 hrs.)  
3550 ± 30  
Mechanical Oil seal Capacity  
Check Frequency  
RMP (Speed)  
Power Cable Length  
Dry Net weight  
25 ft. (7.6 cm.)  
33 lbs. (15 Kg.)  
25 ft. (7.6 cm.)  
38 lbs. ( 17 Kg.)  
1.  
2.  
3.  
Motor Rotation Upon start-up, the pump "kicks" in the opposite direction of motor rotation. The correct rotation is  
counterclockwise (CCW) as viewed from the impeller end of the pump.  
Mechanical Oil Seal Use a good grade 10 weight non-detergent hydraulic oil (i.e.ShellTurbo 32 or equivalent).Fill oil cavity  
75% to 85% full (allow air space for expansion).  
Control Box - Control box (Table 2) may be required for certain pumping applications.  
Table 2. Control Box Specifications  
Thermal  
Overload  
Protection Capability  
Float  
Switch  
UL/CSA  
Listed  
Model No.  
VoltageType  
115 VAC, 60 Hz Single-  
Phase  
CB3  
YES  
NO YES  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 9  
 
ST-1500 SERIES SUB. PUMP GENERAL INFORMATION  
If the pump was used to pump water containing mud, silt, use  
clean water to flush out the pump after each use.  
Introduction  
The Multiquip Model ST-1500 series submersible pumps are  
designed to pump water and is used for the draining (de-  
watering) of swimming pools, well casings construction sites,  
cofferdams, manholes, transformer vaults and excavations.  
DO NOT allow the pump to run dry, as this will damage the  
pump. During maintenance, dry running is permissible but only  
for a few seconds.  
NEVER lift the pump by its electrical power cord. ALWAYS lift  
the pump by its carrying handle or attach a rope to the carrying  
handle.  
A cast iron ductile type impeller is attached to the output shaft of  
a 0.5 HP (ST-1503A) or 0.3 HP (ST-1503CUL) electric motor  
which provides adequate power for general purpose pumping.  
This submersible pump is supplied complete with an electric  
power cable, and a discharge port which accepts a 2-inch (ST-  
1503A) or 1.5-inch (ST-1503CUL) hose.  
A pump fully submerged pump in liquid will not freeze, unless  
the liquid freezes. DO NOT allow a partially submerged pump to  
freeze.The expansion of water freezing in the volute may crack  
the pump, causing expensive repairs. If there is any danger of  
the pump being subjected to freezing temperatures, lift the pump  
from water and allow it to drain thoroughly.  
This pump is ideal for portability because of its light weight and  
carrying handle. For reliability and long life, a mechanical seal  
provides shaft sealing, with an oil chamber separating the pump  
section from the motor.  
If the pump jams or the pump rotor locks for any reason,  
disconnect the pump from the power source immediately.  
Allowing the pump motor to cycle ON and OFF under an overload  
condition can burn out the motor.  
The pump when in use, should be installed as free standing  
(upright position) on its strainer base. A discharge hose (not  
supplied) should be connected to the discharge port. The  
discharge hose should be adequately supported to avoid stress  
on the pump.  
When replacement of nuts and bolts is required, use only  
recommended parts as referenced in the parts section of this  
manual.This pump uses metric threads. DO NOT use English  
measurement threads.  
For maximum water flow, the discharge hose should be kept as  
short as possible, and with minimum elevation above the pump.  
Remember as the length and/or height of the discharge hose is  
increased, the flow of water will be reduced. Also any reduction  
in the hose size, and any fittings such as valves or outlet nozzles,  
will restrict the water flow.  
Control Box Installation Warnings  
DANGER  
When installing the CB3 control box, the  
possibility exists of electrical shock,  
electrocution and possibly death! NEVER have  
untrained personnel perform the installation.  
ALWAYS have qualified service personnel (licensed  
electrician) perform the installation.  
To avoid back-siphonage when the pump is switched off, ensure  
that the end of the discharge hose is installed above the water  
level at the final discharge point.  
When the pump is switched off, the water remaining in the hose  
will run back through the pump.This can be avoided by placing  
a non-return valve in the hose nearest the pump.  
NEVER use this submersible pump to pump flammable liquids  
or operate in a explosive or flammable environment.  
WARNING  
Explosion or Fire Hazard exists if this  
pump is used with flammable liquids. DO  
NOT use this pump with flammable  
liquids. DO NOT install this pump in  
hazardous locations as defined by the National Electrical  
Code, ANSI/NFPA 70.  
Avoid using this pump in conditions where mud, grit, silt or other  
debris are present.These conditions could cause blockage and  
cause excessive pump wear.  
DO NOT install the pump directly into an area where there is a  
heavy buildup of mud, grit, silt or debris. If this condition is present,  
install the pump on a platform before operating.  
This pump must always be positioned on a platform in an upright  
position. NEVER operate the pump by a suspended rope. To  
prevent large solids from entering the pump, install a wire mesh  
screen or similar barrier around the pump.  
Failure to follow the above referenced precautions could result  
in serious injury or death! Replace pump cord immediately if  
cord becomes damaged or severed.This pump must be installed  
in accordance with National Electric Code ANSI/NFPA 70 so as  
to prevent moisture from entering or accumulating with the boxes,  
conduit bodies fittings, float housing or cable.  
PAGE 10 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1500 SERIES SUB. PUMP COMPONENTS  
Figure 2. Submersible Pump Components  
Figures 2 shows the location of the basic components, for the  
ST-1500 series submersible pumps. Listed below is a brief  
explanation of each component.  
5.  
AC Power Cable This unit is supplied with a 25 ft. (7.6  
meters) AC power cable. Always check the cable for signs  
of wear.NEVER! use a defective power cable.Replace the  
cable immediately if the cable is worn or defective.  
1.  
Strainer Base This strainer base is made of stainless  
steel which is resistant to hardware corrosion. DO NOT  
pump large objects or debris with this pump.This pump is  
for pumping water only.For de-watering purposes, always  
place the strainer base on a platform.  
6.  
Carrying Handle Always carry the submersible pump  
by its handle. NEVER! carry the pump by its power cord.  
Carrying or lifting the pump by the power cord, will cause  
undue stress on the cord, and ultimately the cord will  
become dislodged from the pump.  
2.  
3.  
Volute/Impeller Impellers are constructed of high-chrome  
ductile iron to minimizes wear and prolong service life.  
7.  
Thermal Overload Protection This pump is equipped  
with a thermal overload protection device that will shutdown  
the motor in the event of high operating temperatures.The  
motor will automatically restart once the temperature returns  
to an acceptable operating temperature.  
Electric Motor The ST-1503A submersible pump utilizes  
a 60 Hz, single-phase, 115VAC, 0.5 HP electric motor.The  
ST-1503CUL submersible pump utilizes a 60 Hz, single-  
phase, 115 VAC, 0.33 HP electric motor. Consult with a  
licensed electrician before connecting motor to a power  
source. Observe all city and local safety codes.  
8.  
9.  
Mechanical Oil Seal This oil filled seal provides  
lubrication when running the pump dry. NEVER! run the  
pump dry. Running the pump dry will cause severe damage  
to the pump.  
4.  
Discharge Port Connect a 2-inch (ST-1503A) or 1.5-  
inch (ST-1503CUL) hose to this port. Remember to  
adequately support the discharge hose to avoid stress on  
the pump.  
Mechanical Oil Seal Plug Remove this plug to check  
and add hydraulic oil (Shell 32 or equivalent) to the oil  
cavity.This oil protects the mechanical seal.Oil cavity should  
be full enough to cover seal spring.  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 11  
 
ST-1500 SERIES SUB. PUMP FLOAT SWITCHES  
Design Features  
Float Switch Theory  
Constructed of rigid, durable ABS polymer ultrasonically welded.  
The all-steel mercury switch is held by positioning pins. Interior  
is filled with cell foam.  
Mercury monitoring is a mercury-switch actuated, liquid level  
control that has proven to be more economical and longer lasting  
than other types of liquid-level control systems, easily replacing  
and improving upon diaphragm switches, air bubble systems  
and electromechanical switches most often relied upon in the  
past.  
Suitable for most liquid environments.  
Hermetically sealed.  
Thick-walled non-corrosive PVC plastic enclosure.  
Pressure tested to 60 ft. (18.2 meters).  
How It Works  
There is a tilt-sensitive mercury switch hermetically sealed within  
each float. As the liquid level (water) rises or falls, the float changes  
its angle until the mercury switch makes (closed, Figure 4) or  
breaks (open, Figure 5) the circuit. Maximum pumping range is  
120 degrees.See Figure 3 below.  
Mercury switch reliability, proven to 500,000 cycles.  
Standard SJO, 16-gauge, 2 conductor cord (20 ft./6.09 m).  
Figure 4. Float Switch (Closed)  
Figure 3. Pumping Range (Float Switch)  
Pumping Range  
The pumping range of the pump is determined by the float switch  
tether cord.UseTable 3 as guide line to determine your required  
pumping range. Pumping ranges are based on non-turbulent  
conditions. Range may vary due to water temperature and cord  
shape. Please note as the tether length increases, so does the  
variance of the pumping range.  
Figure 5. Float Switch (Open)  
Table 3. Pumping Range  
2 in.  
4 in.  
6 in.  
8 in.  
10 in.  
12 in.  
14 in.  
16 in.  
Tether Length  
5.08 cm. 10.16 cm. 15.24 cm. 20.32 cm. 25.4 cm. 30.48 cm. 35.56 cm. 40.64 cm.  
6 in. 10 in. 14 in. 18 in. 22 in. 27 in. 31 in. 35 in.  
15.24 cm. 25.4 cm. 35.56 cm. 45.72 cm. 55.88 cm. 68.58 cm. 78.74 cm. 88.9 cm.  
Pumping Range  
PAGE 12 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1500 SERIES SUB. PUMP FLOAT SWITCH (PIGGY-BACK)  
Float Switch  
Single or dual control float switches can be used for the unattended operation of the submersible pump. When using the piggy-  
back power configuration (plug), the ST-1500 series pumps DO NOT require the use of a control box.In this configuration (piggy-  
back), the SW-1 (single float switch) or SW-2 (dual float switch) are required. Figure 6 is an example of a single float switch application.  
MountingThe Float Switch  
Figure 6 shows a single float switch  
1.  
Determine the required cord tether length as shown in  
Figure 6 and Table 3.  
NOTE  
application. For dual float switch  
capability use a Model SW-2 mercury  
type float switch.  
2.  
3.  
Place the cord into the clamp as shown in Figure 6.  
Secure the clamp to the discharge hose as shown in Figure  
5. DO NOT install cord under hose clamp.  
4.  
Using a screwdriver, tighten the hose clamp.DO NOT over-  
tighten. Make sure the float cord is not allowed to touch the  
excess hose clamp band during operation.  
Figure 6. Single Float Switch  
Application Diagram  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 13  
 
ST-1500 SERIES SUB. PUMP FLOAT SWITCH (CONTROL BOX)  
Control Box (CB3)  
For special remote pumping applications of the submersible pump, a control box (Model CB3) may be required.This water resistant  
control box provides watertight housing and glands to prevent water from leaking into the box, and a float switch interface. When using  
the CB3 control box, only the SW-1WOP float switch (2) can be used (no plug, bare wires).Shown below (Figure 7) is a wiring layout of  
the CB3 control box. See page 22 for a wiring diagram of the control box.  
Figure 7. CB3 Control Box and Dual Float Switch  
Application Diagram  
PAGE 14 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1500 SERIES SUB. PUMP OPERATION  
Hose Connections  
1. Connect a 2-inch (ST-1503A) or 1.5-inch (ST-1503CUL)  
hose to the discharge port on the pump as shown in Figure  
8. Make sure that the hose is attached correctly to the  
discharge port.  
Pump Power Connections (Piggy-Back Cord Only)  
1.  
Make sure the circuit breaker supplying power to the pump  
is in the OFF position.  
2.  
Connect the float switch or switches to the AC power  
receptacle as shown in Figure 6.  
Attaching Lifting Rope  
1. Attach a suitable lifting cable (rope) to the carrying handle  
(Figure 8) on the pump and lower the pump into place. For  
applicationswherethereisanexcessiveamountofmud,grit  
or silt, the use of a support platform is desirable. When  
pumpingwaterfromswimmingpooltypeapplicationswhere  
thereislittleor nodebris,thesupportplatformisnotrequired.  
Figure 9. Submersible Pump Upright Position  
(Incorrect)  
3. If all of the pump's electrical requirements have been met,  
placethecircuitbreakerorpowerON/OFFswitchintheON  
position.  
4. Waitafewsecondsandwatershouldbegintoflowfromthe  
dischargehose.  
5. Ifwaterisnotflowingfromthedischargehoseornotflowing  
freelyafterafewminutes,removethepowerfromthepump  
and check the system for leaks.  
6. To stop the pump from pumping, place the circuit breaker  
or ON/OFF switch in the OFF position.  
DANGER  
NEVER! grab or touch a live power cord (Figure 10). DO  
NOT stand in water when connecting the pump's power cord  
into a voltage source.The possibility exist of electrical shock,  
electrocution and possibly death!  
WET  
HANDS  
Figure 8. Submersible Pump Upright Position  
(Correct)  
2. Makesurethepumpisalwaysplacedinanuprightposition,  
nottilted(Figure9).Neverpositionthepumpdirectlyonasoft,  
loose bottom. Remember to attain maximum pumping ca-  
pacity and prevent excessive wear, position the pump so it  
will not burrow itself into sand or clay.  
POWER  
CORD  
(POWER ON)  
Figure 10. Power Cord (Wet Hands)  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 15  
 
ST-1500 SERIES SUB. PUMPCONTROL BOX INSTALLATION  
Power Cord Requirements  
DANGER  
When routing the 115 VAC, 60 Hz., single phase power via a  
powercordtothecontrolbox,ALWAYSusethecorrectwiresize.  
Please reference Table 4 below (Cord Length/Wire Size) to  
determinethecorrectwiresize.Incorrectwire sizecanadversely  
affecttheperformanceofthepump.  
The ST-1500 series submersible  
pumps are also designed to work  
with a control box (Model CB3).This  
control box contains the necessary  
electronics(floatswitchconnections)tooperatethepump.  
Remember this control box contains hazardous voltages.  
Disconnect all sources of power before installing or  
servicing. There exists the possibility of electrocution,  
electric shock or burn, which can cause severe bodily  
harm or even death!  
TABLE 4. CORD LENGTH AND WIRE SIZE  
S
AMPS  
6
50 FT.  
100 FT.  
16 AWG  
14 AWG  
14 AWG  
14 AWG  
12 AWG  
12 AWG  
150 FT.  
14 AWG  
12 AWG  
12 AWG  
12 AWG  
10 AWG  
10 AWG  
16 AWG  
16 AWG  
16 AWG  
14 AWG  
14 AWG  
12 AWG  
8
CAUTION  
This control box should only be installed or serviced by a  
10  
12  
14  
16  
licensed electrician or qualified personnel.  
Control Box Mounting  
Mountthecontrolboxinanuprightverticalposition.Makesure  
the control box is securely fastened to a flat surface, that is free  
of dust, dirt, moisture or any elements that may contaminate or  
erode the electronic components of the control box.  
Connecting Dual float Switch (SW-1WOP)To Control Box  
1.  
Remove the float switch input connector housing, then  
route the float switch wires through the cable gland on the  
control box. Attach the wires of the float switch to the  
terminal block as indicated byTable 5 and Figure 6.  
Single-Phase Power Installation (Input)  
All ST-1500 series submersible pumps require 115V, 60 Hz.,  
single-phase power for normal operation.  
If you cannot determine what your pump's power  
requirements are, look at the vendor supplied identification  
name tag attached to the pump or please contact Multiquip's  
Service/Technical Assistance department.  
TABLE 5. FLOAT SWITCH CONNECTIONSS  
TERMINAL BLOCK  
FLOAT SWITCH  
NUMBER  
CAUTION  
TERMINAL 1 (BLACK)  
START  
TERMINAL 2 (WHITE)  
Applying incorrect power (voltage phasing) to the  
submersiblepumpcancauseseveredamagetothepump.  
Please make sure that the correct voltage and phase are  
transferred to the pump at all times.  
TERMINAL 7 (WHITE)  
STOP  
TERMINAL 8 (BLACK)  
2.  
3.  
Tighten the connector housing to ensure a tight fit between  
the cord and the connector body.This will prevent the cable  
from pulling out of the terminal block and also prevent  
moisture from entering the control box.  
Determine the length of the float switch wires, then secure  
float switch wires to pump discharge hose. See Figures 3  
and 6 and Table 3 to determine the pumping range.  
PAGE 16 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1500 SERIES SUB. PUMPCONTROL BOX INSTALLATION  
2.  
Remove the pump AC input connector housing from the  
control box, then route the power cord through the cable  
gland on the control box.  
Connecting AC Power to the Control Box  
1.  
2.  
3.  
The AC power cord (input) should have three wires. Each  
wire is color coded. The colors are WHITE, BLACK and  
GREEN.  
3.  
Connect the pump power cord to the contactor as shown in  
Figure 7 and Table 7.  
Remove the AC input connector housing from the control  
box, then route the power cord through the cable gland on  
the control box.  
TABLE 7. AC OUTPUT POWER  
CONNECTIONS TO PUMP  
Connect the AC power cord to the contactor as shown in  
Figure 7 and Table 6.  
CABLE WIRE COLOR  
BLACK  
CONTACTOR  
T1  
T2  
TABLE 6. AC INPUT POWER  
CONNECTIONS TO CONTACTOR  
S
WHITE  
CABLE WIRE COLOR  
BLACK  
CONTACTOR  
GREEN  
GROUND  
L1  
L2  
WHITE  
Electrical connections to the power  
source should only be performed by  
a licensed electrician or qualified  
personnel.  
NOTE  
GREEN  
GROUND  
4.  
Tighten the connector housing to ensure a tight fit between  
the power cord and the connector body.This will prevent  
the cable from pulling out of the terminal block and also  
prevent moisture from entering the control box.  
Turning On The Pump  
1. If all of the pump's electrical requirements have been met,  
placethecircuitbreakerorpowerON/OFFswitchintheON  
position.  
Itisrecommendedthatthepowerbeing  
2. The CB3 control box has an operation switch located on  
thefront cover.Thisswitchhas3positions, AUTO,MANUAL  
and OFF. The AUTO position allows the pump to run in an  
unattended mode.The MANUAL position will let the pump  
runwithoutthefloatswitchescontrollingthepump.Whenin  
the manual mode be careful not to let the pump run dry.  
Severedamagetothepumpmayoccurifitisallowedtorun  
dry.NEVER let the pump run dry.  
supplied to the control box ALWAYS  
be connected to a circuit breaker or  
a quick disconnect switch. This  
safetyfeatureallowsforquickremoval  
of power from the control box in the  
event of an emergency.  
NOTE  
5.  
Connect the other end of the AC power cord to the voltage  
source. Remember to provide a means of disconnecting  
the power from the control box (circuit breaker or quick  
disconnect switch). Also make sure to provide a good earth  
ground to the control box.  
3. Place the operation switch in the AUTO position. The AC  
power indicator lamp should be lit (ON).  
4. Waitafewsecondsandwatershouldbegintoflowfromthe  
dischargehose.  
Connecting AC Power to the Pump  
1.  
AC power is transferred to the pump via a contactor.The  
coil of the contactor is energized or de-energized by the  
opening and closing of the float switch contacts.The power  
cord should have three wires. Each wire is color coded.  
The colors are WHITE, BLACK and GREEN.  
5. Ifwaterisnotflowingfromthedischargehoseornotflowing  
freelyafterafewminutes,removethepowerfromthepump  
and check the system for leaks.  
6. Tostopthepumpfrompumping, placetheoperationswitch  
in the OFF position.  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 17  
 
ST-1500 SERIES SUB. PUMP CLEAN-UP  
Pump Shut-Down/Clean-up  
1. Remove the power from the pump by turning off the circuit  
breakerorswitchthatprovidespowertothepump.Remem-  
bertomakesurethathandsaredry(notwet),andfeetarenot  
standinginwaterwhenremovingdisconnectingpowerfrom  
thepump.  
2. Usingtheliftingrope,liftthepumpupfromitscurrentposition.  
Removethedischargehosefromthedischargeportonthe  
pump.  
3. Removeallpowercablesandfloatswitchesfromthecontrol  
box. Placecablesandfloatswitchesinasuitablecontainer  
where they will not get damaged.  
4. Ifthepumpwasusedtopumpmud,gritorsilt,flush vigorously  
with clean water.  
5. Removethepumpfromthewater.Wipeoffanymudordebris  
that might have attached itself to the pump.  
6. Store pump in a clean dry place away from dirt and debris.  
PAGE 18 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1500 SERIES SUB. PUMP MAINTENANCE  
LUBRICATION  
5. If oil level is low fill with SAE 10 weight non-detergent  
hydraulicoil(i.e.ShellTurbo32 orequivalent). Filloilcavity  
75% to 85% full (allow air space for expansion). See Table  
1 for pump oil cavity capacity.  
To check the oil level of the mechanical seal, perform the  
following:  
1. Lay the pump (Figure 11) on its side with the oil plug facing  
upwards.  
IMPELLER  
1. Make sure the clearance between the impeller and the  
friction disk is approximately .012 - .020 inches (.304 - .508  
mm.)  
2. Remove oil fill plug.  
3. Visually inspect oil plug hole to verify that oil cavity is full  
enoughtocoversealspring.Checkevery300hours,change  
hydraulic oil every 6 months (1,000 hours) or as needed.  
2. Ifimpellerisdefectiveorbadlyworn,replaceimpellerimme-  
diately.  
4. While checking the hydraulic oil level, also check the  
condition of the hydraulic oil in the seal cavity . Block the  
opening with a finger and roll pump to one side to drain  
oil into a small transparent container.If oil is cloudy or has  
water in it, drain oil from pump cavity and replace hydrau-  
lic oil. Check the seal for wear damage.  
OIL FILL  
PLUG  
REMOVE FILL PLUG, AND  
VISUALLY INSPECT THAT  
OIL CAVITY IS FULL ENOUGH  
TO COVER SEAL SPRING.  
LAY PUMP FLAT  
ON ITS SIDE  
FILL TO 75-80% CAPACITY  
SEE TABLE 1 FOR FILLING  
CAPACITY.  
FILL WITH 10 WEIGHT NON-  
DETERGENT HYDRAULIC  
OIL. USE SHELL TURBO 32  
OR EQUIVALENT.  
CHECK HYDRAULIC OIL  
EVERY 300 HOURS. CHANGE  
EVERY 6 MONTHS OR AS  
NEEDED.  
DISCOLORATION OF OIL  
(MILKY)INDICATES A LEAKING  
PUMP WATER SEAL.  
Figure 11. Checking Hydraulic Oil  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 19  
 
ST-1500 SERIES SUB. PUMP TROUBLESHOOTING  
Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of a  
breakdown, useTable 8 (PumpTroubleshooting) as a basic guideline for troubleshooting the pump. If the problem cannot be  
remedied, contact Multiquip's service department.  
TABLE 8. PUMP TROUBLESHOOTING  
SYMPTOM  
POSSIBLE PROBLEM  
SOLUTION  
Check that proper voltage (115 VAC, 60 Hz, single-phase ) is being  
supplied to the pump. Also check that there is an adequate amount  
of current (amps) to run the pump. Check power source circuit  
breaker.  
Incorrect voltage/amps?  
If using float switches check wiring, inspect power cord.  
Replace fuse, check cause of blown fuse.  
Check electrical connections?  
Blown power fuse?  
Pump Fails To Start  
Disconnect power cord and check for clogging and improper impeller  
clearance. Unclog pump. Check overload protection device.  
Impeller locked?  
Use multimeter to check motor insulation. Insulation resistance must  
be approximately 15 megaohms. If resistance is low, disassemble  
pump motor and bake windings to dry them.  
Wet motor windings?  
Defective motor and pump  
bearings?  
Check for excessive bearing wear, if worn replace bearings. Replace  
motor if defective.  
Twisted or restricted discharge  
hose?  
Lay hose flat un-kinked. Remove clog from hose line.  
Clean strainer.  
Clogged pump strainer?  
Pump Fails to Deliver Full  
Output  
Use a voltmeter to check voltage while pump is energized. Voltage  
must be within ±10%. Check power source (no load and load). If an  
extension cord is used, make sure it has adequate current-carrying  
capacity for the required length.See Table 4.  
Low voltage?  
Impeller worn?  
Replace impeller.  
Replace water seal.  
Tighten securely.  
Defective water seal?  
Loose Oil Fill Plug?  
Water in Seal Oil  
PAGE 20 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1500 SERIES SUB. PUMP PERFORMANCE CURVES  
MAX HEAD  
28 FT. (8.5 METERS)  
10  
40  
60  
70  
80  
90  
PUMPING CAPACITY  
45 GPM (170 LPM)  
Figure 12. Pump Performance Curves  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 21  
 
ST-1500 SERIES SUB. PUMP WIRING DIAGRAMS  
115 VAC, 60 Hz. ELECTRIC MOTOR  
WIRING DIAGRAM  
LEAD WIRES  
AC POWER CORD  
MAIN  
COIL  
BLACK (LINE)  
U
V
WHITE (NEUTRAL)  
AUXILIARY  
GREEN (GROUND)  
COIL  
CENTRIFUGAL  
SWITCH  
CONTROL BOX WIRING DIAGRAM  
CONTACTOR  
EXTERNAL 1-PHASE  
WHITE  
(115 VAC, 60 Hz.)  
POWER SOURCE  
POWER  
CIRCUIT  
BREAKER  
PUMP  
POWER  
CORD  
INPUT  
T1  
CORD  
L1  
BLACK  
WHITE  
GREEN  
BLACK  
BLACK  
L1  
L2  
WHITE  
SUBMERSIBLE  
PUMP  
GREEN  
GND  
COIL  
GREEN  
POWER  
ON  
LAMP  
GROUND  
CHASSIS  
GND.  
T2  
WHITE  
L2  
BLACK  
OPERATION SWITCH  
AUTO  
CHASSIS  
GND.  
WHITE  
BLACK  
OFF  
BLACK  
MANUAL  
BLACK  
8
4
WHITE  
BLACK  
BLACK  
7
6
5
3
2
WHITE  
BLACK  
1
START  
FLOAT  
SWITCH  
(HIGH)  
STOP  
FLOAT  
SWITCH  
(LOW)  
PAGE 22 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
NOTE PAGE  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 23  
 
ST-1500 SERIES SUB. PUMP EXPLANATION OF CODE IN REMARKS  
COLUMN  
How to read the marks and remarks used in this parts  
book.  
he contents of this parts  
atalog are subject to change  
ithout notice.  
NOTE  
Items Found In the RemarksColumn  
Serial Numbers-Where indicated, this indicates a serial  
number range (inclusive) where a particular part is used.  
Model Number-Where indicated, this shows that the  
corresponding part is utilized only with this specific model  
number or model number variant.  
Items Found In the Items NumberColumn  
All parts with same symbol in the number column, , #,  
+
, %, or  
*
>, belong to the same assembly or kit.  
If more than one of the same  
reference number is listed, the  
last one listed indicates newest  
(or latest) part available.  
NOTE  
PAGE 24 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1500 SERIES SUB. PUMP SUGGESTED SPARE PARTS  
ST-1503A/CUL SUBMERSIBLE PUMP  
1 TO 3 UNITS  
Qty.  
P/N  
Description  
Remarks  
1 ............ 0201503A120................. AC CORD W/ GLAND ....... ST-1503A  
1 ............ 0201503UL120 .............. AC CORD W/ GLAND ....... ST-1503CUL  
1 ............ 0201503A081................. OIL SEAL ........................... ST-1503A  
1 ............ 0201503081 ................... OIL SEAL ........................... ST-1503CUL  
1 ............ 0201503A112................. OIL SEAL  
1 ............ 0201503A008................. PACKING, CASING............ ST-1503A  
1 ............ 0201503UL008 .............. PACKING, CASING............ ST-1503CUL  
1 ............ 0201503A060................. MECHANICAL SEAL ......... ST-1503A  
1 ............ 0201503060 ................... MECHANICAL SEAL ......... ST-1503CUL  
1 ............ 0201503A003................. IMPELLER ......................... ST-1503A  
1 ............ 0201503003 ................... IMPELLER ......................... ST-1503CUL  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 25  
 
ST-1503A ELECTRIC SUBMERSIBLE PUMP ASSY.  
ST-1503A - ELECTRIC SUBMERSIBLE PUMP ASSY.  
102  
104  
263  
265  
266  
641  
121  
120  
236  
125  
563  
103  
127  
123  
122  
174  
60  
65  
131  
214-1  
224  
1
132  
474  
299  
129  
179  
445  
446  
119  
81  
130  
447  
160  
47  
3
6
5
4
214-2  
8
176  
177  
112  
146  
147  
PAGE 26 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1503A ELECTRIC SUBMERSIBLE PUMP ASSY.  
ST-1503A - ELECTRIC SUBMERSIBLE PUMP ASSY.  
NO  
1
3
4
5
6
8
47  
47  
PART NO  
PART NAME  
CASING  
IMPELLER  
QTY.  
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
4
4
1
3
1
1
REMARK  
0201503A001  
0201503A003  
0201503A004  
0201503A005  
0201503A006  
0201503A008  
0201503A047A  
0201503A047B  
0201503A060  
0201503A065  
0201503A081  
0201503A102  
0201503A103  
0201503A104  
0201503A112  
0201503A119  
0201503A120  
0201503A121  
0201503A122  
0201503A123  
0201503A125  
0201503A127  
0201503A129  
0201503A130  
0201503A131  
0201503A132  
0210503A146  
0201503A147  
0201503A160  
0201503A174  
IMPELLER NUT  
IMPELLER NUT WASHER  
IMPELLER KEY  
CASING PACKING  
LINER (0.2MM)  
LINER (0.3MM)  
MECHANICAL SEAL  
PLUG  
OIL SEAL  
DISCHARGE PORT  
PACKING  
BOLT  
OIL SEAL FOR OIL CHAMBER  
MOTOR  
AC CORD W/CORD GLAND  
CORD CLAMP  
HANGER METAL  
CHAIN  
60  
65  
81  
102  
103  
104  
112  
119  
120  
121  
122  
123  
125  
127  
129  
130  
131  
132  
146  
147  
160  
174  
SCREW  
CARRYING HANDLE  
FRAME COVER  
PACKING  
BOLT  
SPRINGWASHER  
STRAINER  
BOLT  
SLEEVE  
OUTER PIPE  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 27  
 
ST-1503A ELECTRIC SUBMERSIBLE PUMP ASSY.  
ST-1503A - ELECTRIC SUBMERSIBLE PUMP ASSY.  
102  
104  
263  
265  
266  
641  
121  
120  
236  
125  
563  
103  
127  
123  
122  
174  
60  
65  
131  
214-1  
224  
1
132  
474  
299  
129  
179  
445  
446  
119  
81  
130  
447  
160  
47  
3
6
5
4
214-2  
8
176  
177  
112  
146  
147  
PAGE 28 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1503A ELECTRIC SUBMERSIBLE PUMP ASSY.  
ST-1503A - ELECTRIC SUBMERSIBLE PUMP ASSY.  
176  
177  
179  
0201503A176  
0201503A177  
0201503A179  
SUC COVER  
BOLT  
PACKING  
PACKING  
PACKING  
PLUG  
S-TIP  
WASHER  
BOLT  
1
4
1
1
1
1
1
2
4
4
4
1
1
1
4
2
214-1 0201503A214A  
214-2 0201503A214B  
224  
236  
263  
265  
266  
299  
445  
446  
447  
474  
563  
0201503A224  
0201503A236  
0201503A263  
0201503A265  
0201503A266  
0201503A299  
0201503A445  
0201503A446  
0201503A447  
0201503A474  
0201503A563  
WASHER  
SCREW 6MM X 40MM  
CONDENSER STARTING  
AUTO-CUT  
CENTRIFUGAL SWITCH  
WASHER  
SPLIT PIN  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 29  
 
ST-1503CUL ELECTRIC SUBMERSIBLE PUMP ASSY.  
ST-1503CUL SUBMERSIBLE PUMP ASSY.  
102  
104  
263  
265  
266  
641  
121  
120  
236  
125  
563  
103  
127  
123  
122  
174  
60  
65  
131  
214-1  
224  
1
132  
474  
299  
129  
179  
445  
446  
119  
81  
130  
447  
160  
47  
3
6
5
4
214-2  
8
176  
177  
112  
146  
147  
PAGE 30 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1503CUL ELECTRIC SUBMERSIBLE PUMP ASSY.  
ST-1503CUL SUBMERSIBLE PUMP ASSY.  
NO  
1
3
4
5
6
8
47  
47  
PART NO  
PART NAME  
CASING  
IMPELLER  
QTY.  
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
2
1
1
1
4
4
1
3
1
1
REMARK  
0201503001  
0201503003  
0201503004  
0201503005  
0201503006  
0201503UL008  
0201503047A  
0201503047B  
0201503060  
0201503065  
0201503081  
0201503A102  
0201503A103  
0201503A104  
0201503A112  
0201503UL119  
0201503UL120  
0201503121  
0201503122  
0201503123  
0201503125  
0201503127  
0201503129  
0201503UL130  
0201503131  
0201503132  
0201503146  
0201503147  
0201503160  
0201503UL174  
IMPELLER NUT  
IMPELLER NUT WASHER  
IMPELLER KEY  
CASING PACKING  
LINER (0.2MM)  
LINER (0.3MM)  
MECHANICAL SEAL  
PLUG  
OIL SEAL  
DISCHARGE PORT  
PACKING  
BOLT  
OIL SEAL FOR OIL CHAMBER  
MOTOR  
AC CORD W/CORD GLAND  
CORD CLAMP  
HANGER METAL  
CHAIN  
60  
65  
81  
102  
103  
104  
112  
119  
120  
121  
122  
123  
125  
127  
129  
130  
131  
132  
146  
147  
160  
174  
SCREW  
CARRYING HANDLE  
FRAME COVER  
PACKING  
BOLT  
SPRINGWASHER  
STRAINER  
BOLT  
SLEEVE  
OUTER PIPE  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 31  
 
ST-1503CUL ELECTRIC SUBMERSIBLE PUMP ASSY.  
ST-1503CUL - ELECTRIC SUBMERSIBLE PUMP ASSY.  
102  
104  
263  
265  
266  
641  
121  
120  
236  
125  
563  
103  
127  
123  
122  
174  
60  
65  
131  
214-1  
224  
1
132  
474  
299  
129  
179  
445  
446  
119  
81  
130  
447  
160  
47  
3
6
5
4
214-2  
8
176  
177  
112  
146  
147  
PAGE 32 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1503CUL ELECTRIC SUBMERSIBLE PUMP ASSY.  
ST-1503CUL - ELECTRIC SUBMERSIBLE PUMP ASSY.  
176  
177  
179  
0201503176  
0201503177  
0201503179  
SUC COVER  
BOLT  
PACKING  
PACKING  
PACKING  
PLUG  
S-TIP  
WASHER  
BOLT  
1
4
1
1
1
1
1
2
4
4
4
4
1
1
4
2
4
214-1 0201503UL214  
214-2 0201503214B  
224  
236  
263  
265  
266  
299  
299  
446  
447  
474  
563  
641  
0201503224  
0201503236  
0201503263  
0201503265  
0201503266  
0201503299  
0201503299  
0201503UL446  
0201503A447  
0201503A474  
0201503A563  
0201503641  
WASHER  
SCREW 5 X 30  
SCREW 6MM X 40MM  
AUTO-CUT  
CENTRIFUGAL SWITCH  
WASHER  
SPLIT PIN  
SPRINGWASHER  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 33  
 
ST-1503A/CUL ELECTRIC MOTOR ASSY.  
ST-1503A/CUL ELECTRIC MOTOR ASSY.  
1
A
112  
539  
606  
270  
273  
447-2  
447-1  
607  
269  
445  
608  
446  
NOTES:  
COMPLETE ASSEMBLY INCLUDES  
ITEMS WITHIN DASHED LINES  
1
PAGE 34 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
ST-1503A/CUL ELECTRIC MOTOR ASSY.  
ST-1503A/CUL ELECTRIC MOTOR ASSY.  
NO  
112  
129*  
131*  
132*  
268*  
270  
273  
446  
447-1  
447-2  
539  
540*  
PART NO  
0201503112  
PART NAME  
OIL SEAL  
MOTOR HEAD COVER  
BOLT  
SPRINGWASHER  
MOTOR A BRACKET  
MOTOR ROTOR  
MOTOR STATOR  
AUTO-CUT (PROTECTOR)  
CENTRIFUGAL SWITCH-1  
CENTRIFUGAL SWITCH-2  
SNAP RING  
A PACKING  
B PACKING  
MOTOR A BEARING  
MOTOR B BEARING  
WAVE WASHER  
MOTOR GUARD  
QTY.  
1
1
4
4
1
1
1
1
1
1
1
1
1
1
1
1
REMARK  
*
0201503A129  
0201503A131  
0201503A132  
0201503A268  
0201503UL270  
0201503UL273  
0201503UL446  
0202005T4471  
0201503A4472  
0202005T539  
0201503UL540  
0201503UL541  
0202005T606  
0202005S607  
0202005T608  
0201503A611  
0201503UL119  
*
*
*
*
*
*
541*  
606  
*
607  
*
608  
*
611  
1
A
MOTOR ASSEMBLY ..................... 1.................... INCLUDES ITEMS W/  
*
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 35  
 
Effective: October 1, 2002  
TERMS AND CONDITIONS OF SALE PARTS  
PAYMENT TERMS  
5. Partsmustbeinnewandresalablecon- Multiquipreservestherighttoquoteandsell  
dition,intheoriginalMultiquippackage(if directtoGovernmentagencies,andtoOriginal  
any), and with Multiquip part numbers Equipment Manufacturer accounts who use  
Terms of payment for parts are net 10 days.  
FREIGHTPOLICY  
clearlymarked.  
our products as integral parts of their own  
products.  
All parts orders will be shipped collect or  
prepaidwiththechargesaddedtotheinvoice.  
All shipments are F.O.B. point of origin.  
Multiquipsresponsibilityceaseswhenasigned  
manifesthasbeenobtainedfromthecarrier,  
andanyclaimforshortageordamagemustbe  
settledbetweentheconsigneeandthecarrier.  
6. Thefollowingitemsarenotreturnable:  
SPECIALEXPEDITINGSERVICE  
a. Obsolete parts. (If an item is in the  
price book and shows as being re- A$35.00surchargewillbeaddedtotheinvoice  
placedbyanotheritem,itisobsolete.) forspecialhandlingincludingbusshipments,  
insuredparcelpostorincaseswhereMultiquip  
mustpersonallydeliverthepartstothecarrier.  
b. Any parts with a limited shelf life  
(such as gaskets, seals, Orings,  
andotherrubberparts)thatwerepur- LIMITATIONSOFSELLERSLIABILITY  
MINIMUMORDER  
chasedmorethansixmonthspriorto  
thereturndate.  
Multiquip shall not be liable hereunder for  
damagesinexcessofthepurchasepriceofthe  
The minimum charge for orders from Mul-  
tiquipis$15.00net.Customerswillbeasked  
for instructions regarding handling of orders  
notmeetingthisrequirement.  
c. Anylineitemwithanextendeddealer item with respect to which damages are  
netpriceoflessthan$5.00.  
claimed, and in no event shall Multiquip be  
liable for loss of profit or good will or for any  
otherspecial,consequentialorincidentaldam-  
ages.  
d. Special order items.  
RETURNEDGOODSPOLICY  
e. Electricalcomponents.  
f. Paint,chemicals,andlubricants.  
g. Decalsandpaperproducts.  
h. Itemspurchasedinkits.  
Returnshipmentswillbeacceptedandcredit  
willbeallowed,subjecttothefollowingprovi-  
sions:  
LIMITATIONOFWARRANTIES  
Nowarranties,expressorimplied,aremade  
in connection with the sale of parts or trade  
accessoriesnorastoanyenginenotmanufac-  
tured by Multiquip. Such warranties made in  
connectionwiththesaleofnew,completeunits  
are made exclusively by a statement of war-  
rantypackagedwithsuchunits,andMultiquip  
neitherassumesnorauthorizesanypersonto  
assume for it any other obligation or liability  
whatever in connection with the sale of its  
products.Apartfromsuchwrittenstatementof  
warranty, there are no warranties, express,  
impliedorstatutory,whichextendbeyondthe  
descriptionoftheproductsonthefacehereof.  
1. AReturnedMaterialAuthorizationmust  
be approved by Multiquip prior to ship-  
ment.  
7. Thesenderwillbenotifiedofanymaterial  
receivedthatisnotacceptable.  
2. ToobtainaReturnMaterialAuthorization,  
alistmustbeprovidedtoMultiquipParts  
Salesthatdefinesitemnumbers,quanti-  
ties, and descriptions of the items to be  
returned.  
8. Suchmaterialwillbeheldforfiveworking  
days from notification, pending instruc-  
tions.Ifareplyisnotreceivedwithinfive  
days,thematerialwillbereturnedtothe  
senderathisexpense.  
a. Thepartsnumbersanddescriptions  
must match the current parts price  
list.  
9. Creditonreturnedpartswillbeissuedat  
dealer net price at time of the original  
purchase,lessa15%restockingcharge.  
b. The list must be typed or computer  
generated.  
10. In cases where an item is accepted, for  
which the original purchase document  
can not be determined, the price will be  
basedonthelistpricethatwaseffective  
twelvemonthspriortotheRMAdate.  
c. The list must state the reason(s) for  
thereturn.  
d. The list must reference the sales  
order(s)orinvoice(s)underwhichthe  
itemswereoriginallypurchased.  
11. Credit issued will be applied to future  
purchasesonly.  
e. The list must include the name and  
phonenumberofthepersonrequest-  
ingtheRMA.  
PRICINGANDREBATES  
Prices are subject to change without prior  
notice.Pricechangesareeffectiveonaspe-  
cificdateandallordersreceivedonorafterthat  
datewillbebilledattherevisedprice.Rebates  
3. AcopyoftheReturnMaterialAuthoriza-  
tionmustaccompanythereturnshipment.  
4. Freight is at the senders expense. All forpricedeclinesandaddedchargesforprice  
partsmustbereturnedfreightprepaidto increaseswillnotbemadeforstockonhand  
Multiquipsdesignatedreceivingpoint.  
atthetimeofanypricechange.  
PAGE 36 ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04)  
 
NOTE PAGE  
ST-1500 SERIES SUBMERSIBLE PUMPS OPERATION & PARTS MANUAL REV. #0 (10/04/04) PAGE 37  
 
OPERATION AND PARTS MANUAL  
HERE'S HOW TO GET HELP  
PLEASE HAVETHE MODEL AND SERIAL  
NUMBER ON-HANDWHEN CALLING  
MULTIQUIP CORPORATE OFFICE  
18910 Wilmington Ave.  
Carson, CA 90746  
800-421-1244  
FAX:310-537-3927  
Email: mq@multiquip.com  
Internet:www.multiquip.com  
PARTS DEPARTMENT  
800-427-1244  
310-537-3700  
FAX:800-672-7877  
FAX:310-637-3284  
MAYCO PARTS  
800-306-2926  
310-537-3700  
FAX:800-672-7877  
FAX:310-637-3284  
SERVICE DEPARTMENT  
800-421-1244  
FAX:310-537-4259  
310-537-3700  
TECHNICAL ASSISTANCE  
800-478-1244  
FAX:310-631-5032  
FAX:310-537-1173  
WARRANTYDEPARTMENT  
800-421-1244, EXT. 279  
310-537-3700, EXT. 279  
Your Local Dealer is:  
MULTIQUIP INC.  
18910 WILMINGTONAVE.  
CARSON, CALIFORNIA 90746  
800-421-1244 310-537-3700  
FAX:310-537-3927  
E-mail:mq@multiquip.com  
Internet:multiquip.com  
 

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