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OPERATION AND PARTS MANUAL
Submersible Pumps
Model ST-1500 Series
Revision #0 (10/04/04)
THIS MANUAL MUST ACCOMPANY
THE EQUIPMENT AT ALL TIMES.
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HERE'S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING MULTIQUIP CORPORATE OFFICE 18910 Wilmington Ave. 800-421-1244 Carson, CA 90746 FAX: 310-537-3927 Email: mq@multiquip.com Internet: www.multiquip.com PARTS DEPARTMENT 800-427-1244 FAX: 800-672-7877 310-537-3700 FAX: 310-637-3284 MAYCO PARTS 800-306-2926 FAX: 800-672-7877 310-537-3700 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
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ST-1500 SERIES SUB. PUMP — TABLE OF CONTENTS Multiquip ST-1500 Series Submersible Pump Submersible Pumps Component Drawings 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..
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ST-1500 SERIES SUB. PUMP — PARTS ORDERING PROCEDURES When ordering parts, please supply the following information: ❒❒❒❒❒ Dealer account number ❒❒ ❒❒❒ Dealer name and address ❒❒ ❒❒❒ Shipping address (if different than billing address) ❒❒❒ Return fax number ❒❒ ❒❒❒ Applicable model number ❒❒ ❒❒❒❒❒ Quantity, part number and description of each part ❒❒❒❒❒ Specify preferred method of shipment: Note: Unless otherwise indicated by customer, all FedEx or UPS Ground orders are treated as “Standard Order
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ST-1500 SERIES SUB. PUMP — SAFETY MESSAGE ALERT SYMBOLS FOR YOUR SAFETY AND THE SAFETY OF OTHERS! HAZARD SYMBOLS Safety precautions should be followed at all times when Rotating Parts 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 or guards removed. Keep fingers, hands, developed to provide complete hair and clothing away fro
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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 DO NOT place hands or fingers inside pump when pump is injury or even death! This equipment is to be operated by running. trained and qualified personnel only! This equipment is for ALWAYS make certain that the voltage supplied to the pump industrial use only. is correct.
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ST-1500 SERIES SUB. PUMP — RULES FOR SAFE OPERATION ALWAYS make sure that electrical circuits are properly . Emergencies grounded per the National Electrical Code (NEC) and ALWAYS know the location of the nearest fire extinguisher. local codes before operating pump. Severe injury or death by electrocution can result from operating an ungrounded pump. 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 prop
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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)
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ST-1500 SERIES SUB. PUMP — SPECIFICATIONS TABLE 1. SPECIFICATIONS MA odel SL T-1503 ST-1503CU Submersible Trash Centrifugal Type Pump Submersible Pump Ie mpeller Ce ast Iron Ductil Cast Iron Ductil S) uction & Discharge Size2) .00 in. (51 mm 1.50 in. (38 mm 72 gallons/minute 45 gallons/minute Maximum Pumping Capacity (273 liters/minute) (170 liters/minute) M) ax. Solids Diameter 1A .00 in. (25 mm. N/ M) ax Head 3) 4 ft. (10.3 meters 28 ft (8.5 meters P) ower 0) .5 HP (0.37kw 0.33 HP (0.25kw VV o
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ST-1500 SERIES SUB. PUMP — GENERAL INFORMATION If the pump was used to pump water containing mud, silt, use Introduction clean water to flush out the pump after each use. The Multiquip Model ST-1500 series submersible pumps are designed to pump water and is used for the draining (de- DO NOT allow the pump to run dry, as this will damage the watering) of swimming pools, well casings construction sites, pump. During maintenance, dry running is permissible but only cofferdams, manholes, transformer
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ST-1500 SERIES SUB. PUMP — COMPONENTS Figure 2. Submersible Pump Components Figures 2 shows the location of the basic components, for the 5. AC Power Cable – This unit is supplied with a 25 ft. (7.6 ST-1500 series submersible pumps. Listed below is a brief meters) AC power cable. Always check the cable for signs explanation of each component. 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
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ST-1500 SERIES SUB. PUMP — FLOAT SWITCHES Design Features Float Switch Theory Constructed of rigid, durable ABS polymer ultrasonically welded. Mercury monitoring is a mercury-switch actuated, liquid level The all-steel mercury switch is held by positioning pins. Interior control that has proven to be more economical and longer lasting is filled with cell foam. than other types of liquid-level control systems, easily replacing and improving upon diaphragm switches, air bubble systems Suitable f
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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. Mounting The Float Switch Figure 6 s
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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
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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 sui
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ST-1500 SERIES SUB. PUMP— CONTROL BOX INSTALLATION Power Cord Requirements DANGER When routing the 115 VAC, 60 Hz., single phase power via a power cord to the control box, ALWAYS use the correct wire size. The ST-1500 series submersible Please reference Table 4 below (Cord Length/Wire Size) to pumps are also designed to work determine the correct wire size. Incorrect wire size can adversely with a control box (Model CB3). This affect the performance of the pump. control box contains the nece
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ST-1500 SERIES SUB. PUMP— CONTROL BOX INSTALLATION 2. Remove the pump AC input connector housing from the Connecting AC Power to the Control Box control box, then route the power cord through the cable 1. The AC power cord (input) should have three wires. Each gland on the control box. wire is color coded. The colors are WHITE, BLACK and 3. Connect the pump power cord to the contactor as shown in GREEN. Figure 7 and Table 7. 2. Remove the AC input connector housing from the control box, then r
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ST-1500 SERIES SUB. PUMP — CLEAN-UP Pump Shut-Down/Clean-up 1. Remove the power from the pump by turning off the circuit breaker or switch that provides power to the pump. Remem- ber to make sure that hands are dry (not wet), and feet are not standing in water when removing disconnecting power from the pump. 2. Using the lifting rope, lift the pump up from its current position. Remove the discharge hose from the discharge port on the pump. 3. Remove all power cables and float switches from the c
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ST-1500 SERIES SUB. PUMP — MAINTENANCE LUBRICATION 5. If oil level is low fill with SAE 10 weight non-detergent hydraulic oil (i.e. Shell Turbo 32 or equivalent). Fill oil cavity To check the oil level of the mechanical seal, perform the 75% to 85% full (allow air space for expansion). See Table following: 1 for pump oil cavity capacity. 1. Lay the pump (Figure 11) on its side with the oil plug facing IMPELLER upwards. 1. Make sure the clearance between the impeller and the 2. Remove oil fill
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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, use Table 8 (Pump Troubleshooting) 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 t
