OPERATION AND PARTS MANUAL
MODELS:
ST2037
ST2047
ST2047B
ST2038P
ST2040T
SUBMERSIBLE PUMPS
Revision #6 (09/19/19)
To find the latest revision of this publication, visit our website at: www.multiquip.com
THIS MANUAL MUST ACCOMPANYTHE EQUIPMENT AT ALLTIMES.
ST2037, 47, 47B, 40T, 38P SERIES SUB. PUMPS —TABLE OF CONTENTS
Multiquip ST2037, ST2047,
ST2047B ST2038P and
ST2040T Submersible
Pumps
Table Of Contents ..................................................... |
2 |
Safety Message Alert Symbols ................................. |
4 |
Rules For Safe Operation ...................................... |
5-6 |
Dimensions ............................................................... |
7 |
Specifications (Pump/Control Box) ........................... |
8 |
General Information .................................................. |
9 |
Components............................................................ |
10 |
Float Switches ......................................................... |
11 |
Float Switch (Piggy-Back) ....................................... |
12 |
Float Switch (Control Box) ...................................... |
13 |
Operation ................................................................ |
14 |
Control Box Installation ..................................... |
15-16 |
Clean-up ................................................................. |
17 |
Maintenance ........................................................... |
18 |
Troubleshooting ...................................................... |
19 |
Performance Curves ............................................... |
20 |
Pump Wiring Diagram ............................................. |
21 |
Explanation Of Codes In Remarks Column ............ |
22 |
Suggested Spare Parts ........................................... |
23 |
Submersible Pump
Component Drawings
ST2037,ST2047, 2047B Pump Assembly ......... |
24-25 |
ST2040T Pump Assembly ................................. |
26-27 |
ST2038P Pump Assembly .................................. |
28-29 |
As a continuing effort to update our parts book, contact the MULTIQUIP literature department for the latest revision of your "Operation and Parts Manual"
PAGE 2 — ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (09/19/19)
NOTE PAGE
ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (09/19/19) — PAGE 3
ST2037, 47, 47B, 38P, 40T SUB. PUMP— SAFETY MESSAGE ALERT SYMBOLS
FORYOUR SAFETY ANDTHE SAFETY OF OTHERS!
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.
This Owner's Manual has been developed to provide complete instructions for the safe and efficient operation of the Multiquip Model s
ST2037, ST2047, ST2047B,
ST2038P, and ST2040T Submersible Pumps. Before using these pumps, ensure that the operating individual has read and understands all instructions in
this manual.
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.
HAZARD SYMBOLS
Rotating Parts
NEVER operate equipment with covers, or guards removed. Keep fingers, hands, hair and clothing away from all moving parts to prevent injury.
Accidental Starting
ALWAYS place the power source circuit breaker or ON/OFF switch in the OFF position, when the pump is not in use.
Sight and Hearing hazard
DANGER
You WILL be KILLED or SERIOUSLY injured if you DO NOT follow directions.
WARNING
You CAN be KILLED or SERIOUSLY injured if you DO NOT follow directions.
CAUTION
You CAN be INJURED if you DO NOT follow directions.
Potential hazards associated with the ST2037, ST2047, ST2047B, ST2038P, and ST2040T 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.
ALWAYS wear approved eye and hearing protection, if required.
Respiratory Hazard
ALWAYS wear approved respiratory protection, if required.
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.
This submersible pump, other property, or the surrounding environment could be damaged if you do not follow instructions.
PAGE 4 — ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (09/19/19)
ST2037, 47, 47B, 38P, 40T SUB. PUMP —RULES FOR SAFE OPERATION
CAUTION
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.
The following safety guidelines should always be used when operating the ST2037, ST2047, ST2047B, ST2038P, and ST2040T Submersible Pump:
GENERAL SAFETY
■DO NOT operate or service this equipment before reading this entire manual.
■This equipment should not be operated by persons under 18 years of age.
■NEVER operate this equipment without proper protective clothing, shatterproof glasses, steel-toed boots and other protective devices required by the job.
■ NEVER operate this equipment when not feeling well due to fatigue, illness or taking medicine.
■NEVER operate this equipment under the influence or drugs or alcohol.
■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.
■Manufacture does not assume responsibility for any accident due to equipment modifications.
■Whenever necessary, replace nameplate, operation and safety decals when they become difficult read.
■ALWAYS check the machine for loosened threads or bolts before starting.
■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.
■ALWAYS make sure submersible pump is grounded.
■NEVER use gas piping as an electrical ground.
■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 ST2037, ST2047, ST2038P, and ST2040T submersible pumps require 115 VAC, 60 Hz (single-phase) for normal operation.
■DO NOT restrict the flow of the discharge hose as it may cause overheating.
■Be careful of discharge whipping under pressure.
■Make sure pump installation is accordance with national and local electrical codes.
■ALWAYS have a qualified electrician perform the pump 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 to a power source.
■NEVER use a pump with a defective, frayed power cord. Check the power cord on the pump for cuts in the insulation.
■NEVER use a extension cord that is frayed or damaged where the insulation has been cut.
■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.
■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.
■NEVER operate pump on its side.
■DO NOT allow the pump to freeze in water.
■NEVER leave an open pump chamber unattended.
■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.
ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (09/19/19) — PAGE 5
ST2037, 47, 47B, 38P, 40T 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.
WARNINGRisk of Electric Shock
Risk of Electric Shock - This pump is supplied with a grounding conductor and grounding-type attachment plug. To reduce the risk of electric shock, be certain that it is connected only to a properly grounded, grounding-type receptacle.
AVERTISSEMENT- Risques De Chocs Électriques
Risques de chocs électriques - Risques de chocs électriques. Cette pompe est alimentée en électricité au moyen d’un conducteur et d’une fiche d’alimentation de terre. Afin de réduire les risques de chocs électriques, s’assurer que la pompe est uniquement connectée à des boîters de protection de mise à la terre correctement enterrés.
■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.
■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 degrees 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.
■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
. Operator’s 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
Emergencies
■ ALWAYS know the location of the nearest fire extinguisher.
■ ALWAYS know the location of the nearest and first aid kit.
■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.
PAGE 6 — ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (09/19/19)
ST2037, 47, 47B, 38P, 40T SUB. PUMP —DIMENSIONS
Figure 1. Submersible Pump Dimensions
ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (09/19/19) — PAGE 7
ST2037, 47, 47B, 38P, 40T SUB. PUMP —SPECIFICATIONS
TABLE 1. SPECIFICATIONS
Model |
ST-2037 |
ST-2047 / ST-2047B |
ST-2038P |
ST-2040T |
|
|
|
|
|
|
|
Type |
Centrifugal |
Centrifugal |
Centrifugal |
Submersible Trash |
|
Submersible Pump |
Submersible Pump |
Submersible Pump |
Pump |
||
|
|||||
|
|
|
|
|
|
Impeller |
Nitorile Rubber over |
Nitorile Rubber over |
Nitorile Rubber |
Nitorile Rubber |
|
Steel |
Steel |
over Steel |
over Steel |
||
|
|||||
|
|
|
|
|
|
Suction & Discharge Size |
2.00 in. (50 mm) |
2.00 in. (50 mm) |
2.00 in. (50 mm) |
2.00 in. (50 mm) |
|
|
|
|
|
|
|
Maximum Pumping Capacity |
73 gallons/minute |
87 gallons/minute |
60 gallons/minute |
79 gallons/minute |
|
(272 liters/minute) |
(322 liters/minute) |
(227 liters/minute) |
(299 liters/minute) |
||
|
|||||
|
|
|
|
|
|
Max Head |
37 ft. (10.6 meters) |
47 ft (13.9 meters) |
38 ft (11 meters) |
40 ft. (11.4 |
|
meters) |
|||||
|
|
|
|
||
|
|
|
|
|
|
Power |
1 HP (0.75 kw) |
1 HP (0.75 kw) |
1 HP (0.75 kw) |
1 HP (0.75 kw) |
|
|
|
|
|
|
|
Voltage Phase |
1Ø 115V |
1Ø 115V / 1Ø 230V |
1Ø 115V |
1Ø 120V |
|
|
|
|
|
|
|
Starting Amps |
25 |
25 / 12.5 |
25 |
25 |
|
|
|
|
|
|
|
Running Amps |
6.9 |
9.8 / 4.9 |
6.8 |
6.8 |
|
|
|
|
|
|
|
Control Box Required |
See Note 3 |
See Note 3 |
See Note 3 |
See Note 3 |
|
|
|
|
|
|
|
Thermal Overlaod Protection |
YES |
YES |
YES |
YES |
|
|
|
|
|
|
|
Rotation |
CCW (Note 1) |
CCW (Note 1) |
CCW (Note 1) |
CCW (Note 1) |
|
|
|
|
|
|
|
Mechanical Seal Oil Capacity |
120 cc. (Note 2) |
120 cc. (Note 2) |
120 cc. (Note 2) |
133 cc. (Note 2) |
|
|
|
|
|
|
|
Check Frequency |
Monthly (300 hrs.) |
Monthly (300 hrs.) |
Monthly (300 hrs.) |
Monthly (300 hrs.) |
|
|
|
|
|
|
|
RPM (Speed) |
3390 +/- 30 |
3250 +/- 30 |
3400 +/- 30 |
3390 +/- 30 |
|
|
|
|
|
|
|
Power Cable Length |
25 FT. (7.6 m.) |
50 FT. (15.2 m.) |
25 FT. (7.6 m.) |
25 FT. (7.6 m.) |
|
|
|
|
|
|
|
Dry Net weight |
31 lb (14 kg) |
33 lb (15 kg) |
31 lb (14 kg) |
34 lb (15.4 kg) |
|
|
|
|
|
|
1.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.
2.Mechanical Seal Oil – Use a good grade 10 weight non-detergent hydraulic oil (i.e.Shell Turbo 32 or equivalent).Fill oil cavity 75% to 85% full (allow air space for expansion).
3.Control Box - Control box (Table 2) may be required for certain pumping applications.
Table 2. Control Box Specifications
Model No. |
VoltageType |
UL/CSA |
Thermal |
Float |
|
Overload |
Switch |
||||
Listed |
|||||
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|
Protection |
Capability |
||
|
|
|
|||
|
|
|
|
|
|
CB3 |
115 VAC, 60 Hz Single- |
YES |
YES |
YES |
|
Phase |
|||||
|
|
|
|
||
|
|
|
|
|
PAGE 8 — ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (09/19/19)
ST2037, 47, 47B, 38P, 40T SUB. PUMP —GENERAL INFORMATION
Introduction
The Multiquip Model ST2037, ST2047, ST2047B, ST2038P, and ST2040T 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.
A Nitorile rubber over steel impeller is attached to the output shaft of a 1HP 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 located at the top of the pump which accepts a 2-inch hose.
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.
The pump when in use, should be installed as free standing (upright position) on its strainer base. A 2-inch discharge hose (not supplied) should be connected to the discharge port located on top of the pump.The discharge hose should be adequately supported to avoid stress on the pump.
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.
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.
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.
If the pump was used to pump water containing mud, silt, use clean water to flush out the pump after each use.
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 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.
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.
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.
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.
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.
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.
ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (09/19/19) — PAGE 9
ST2037, 47, 47B,38P, 40T SUB. PUMP —COMPONENTS
ST2037, ST2047, ST2047B ST2038P 
ST2040T
Figure 2. Submersible Pump Components
Figures 2 shows the location of the basic components, for the ST2037, ST2047, ST2047B, ST2038P, and ST2040T submersible pumps. Listed below is a brief explanation of each component.
1.Strainer Base – This strainer base is made of electrocating 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.
2.Volute/Impeller – Impellers are constructed of Nitorile Rubber to minimizes wear and prolong service life.
3.Electric Motor – These submersible pumps utilize a 60 Hz, single-phase, 115 VAC, 1 HP electric motor. Consult with a licensed electrician before connecting motor to a power source. Observe all city and local safety codes.
4.Discharge Port – Connect a 2-inch hose to this port. Remember to adequately support the discharge hose to avoid stress on the pump.
5.AC Power Cable – This unit is supplied with a 25 ft. (7.6 meters) or 50 ft. (15.2 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.
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.
7.Thermal Overload Protection – This pump is equipped with a thermal overload protection device that will shut down the motor in the event of high operating temperatures.The motor will automatically restart once the temperature returns to an acceptable operating temperature.
8.Mechanical Seal Oil – 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.
9.Mechanical Seal Oil 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.
PAGE 10 — ST2037,47, 47B, 38P, 40T SUB. PUMPS — OPERATION AND PARTS MANUAL — REV. #6 (09/19/19)
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