MULTIQUIP ST3050D Operation And Parts Manual
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MULTIQUIP ST3050D Operation And Parts Manual

Submersible pump
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OPERATION AND PARTS MANUAL
ST3050D
SUBMERSIBLE PUMP
Revision #4 (01/11/23)
To find the latest revision of this
publication, visit our website at:
www.multiquip.com
THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.

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  • Page 1 OPERATION AND PARTS MANUAL ST3050D SUBMERSIBLE PUMP Revision #4 (01/11/23) To find the latest revision of this publication, visit our website at: www.multiquip.com THIS MANUAL MUST ACCOMPANY THE EQUIPMENT AT ALL TIMES.

  • Page 2: Proposition 65 Warning

    PROPOSITION 65 WARNING PAGE 2 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)

  • Page 3: Table Of Contents

    Suggested Spare Parts ......... 29 Component Drawings Pump Assembly ..........30-33 Electric Motor Assembly ........34-35 NOTICE Specifications and part numbers are subject to change without notice. ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 3...

  • Page 4: Safety Information

    COULD result in DEATH or SERIOUS INJURY. CAUTION Indicates a hazardous situation which, if not avoided, COULD result in MINOR or MODERATE INJURY. NOTICE Addresses practices not related to personal injury. PAGE 4 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)
  • Page 5  No one other than the operator is to be in the working area when the equipment is in operation.  DO NOT use the equipment for any purpose other than its intended purposes or applications. ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 5...
  • Page 6  ALWAYS keep the machine in proper running condition.  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. PAGE 6 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)
  • Page 7 Recyclers and manufacturers alike promote the process de mise à la terre correctement enterrés. of recycling metal. Using a metal recycling center promotes energy cost savings. ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 7...

  • Page 8: Specifications

    2 Mechanical Oil Seal – 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). PAGE 8 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)

  • Page 9: General Information

    This pump uses metric threads. DO NOT use English measurement threads. NEVER use this submersible pump to pump flammable liquids or operate in a explosive or flammable environment. ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 9...

  • Page 10: Components

    (15.24 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 PAGE 10 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)

  • Page 11: Application (Float Switches)

    FLOAT POWER POWER SWITCH INPUT INPUTS PUMP GROUND PUMP 3-INCH DISCHARGE HOSE FLOAT SWITCHES PUMP SUPPORT PLATFORM SUBMERSIBLE PUMP Figure 2. Dual Float Control Switch ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 11...

  • Page 12: Control Boxes

    Table 2. Control Box Specifications Thermal Float UL/CSA Model No. Voltage Type Overload Switch Listed Protection Capability 230/460 VAC CB200 Three-Phase 230 VAC MCP102 Three-Phase 460 VAC MCP104 Three-Phase PAGE 12 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)

  • Page 13: Installation (Cb200)

    ALWAYS use the correct wire size. Please reference Table 3 (Cord Length/Wire Size) to determine the correct wire size. Incorrect wire size can adversely affect the performance of the pump. ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 13...

  • Page 14: Control Boxes

    2. Unplug the 230 VAC female plug from the male motor windings plug and insert the 460 VAC female plug into male motor windings plug. Figure 4. 230/460 VAC Pump Voltage Selection PAGE 14 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)

  • Page 15: Pump Wiring Diagram

    PUMP WIRING DIAGRAM Figure 5. Pump Wiring Diagram ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 15...

  • Page 16: Transformer Wiring (Cb200)

    Incorrect transformer output voltage settings can cause severe damage to the pump. Figure 6. Transformer AC Voltage Settings (Jumper Tabs) PAGE 16 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)

  • Page 17: Wiring Diagram (Cb200)

    WIRING DIAGRAM (CB200) Figure 7. Control Box Wiring Diagram NOTICE Float switch connections are for use with the CB200 Control Box only! ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 17...

  • Page 18: 3-Phase Power Installation (Cb200)

    (circuit breaker or quick disconnect switch). Also make sure to provide a good earth ground to the control box. PAGE 18 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)
  • Page 19 3-PHASE POWER INSTALLATION (CB200) Figure 8. 3-Phase Control Box/Pump System Diagram ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 19...

  • Page 20: Setup (Cb200)

    CB200 14.2 AXE016-6.40-16A Three-Phase operation switch (Figure 11) on the control box in the ST3050D MANUAL position. CB200 AXE016-6.40-16A Three-Phase Figure 11. Operation Switch (Manual Position) PAGE 20 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)
  • Page 21 Once the water level has risen back to the appropriate level the start float switch contacts will close and power will be restored to the pump's motor. ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 21...

  • Page 22: Installation (Mcp102/104)

    It is recommended that the power being supplied to the control box ALWAYS be connected to a circuit breaker or a quick disconnect switch. This safety feature allows for PAGE 22 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)

  • Page 23: Wiring Diagram (Mcp102/104)

    POWER CABLE WARNING INSTALLATION IS TO BE PREFORMED ST-3050D ONLY BY A LICENSED ELECTRICIAN OR QUALIFIED PERSONNEL. SUBMERSIBLE PUMP Figure 17. MCP102/104 Control Box Configurations ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 23...

  • Page 24: Operation

    3. After the pump has been positioned correctly into place, power can be applied to the pump's electric motor. Figure 18. Submersible Pump Upright Position (Correct) PAGE 24 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)
  • Page 25 6. Store pump in a clean dry place away from dirt and debris. ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 25...
  • Page 26 Check the seal for wear damage. Figure 20. Checking Hydraulic Oil PAGE 26 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)

  • Page 27: Troubleshooting

    Water in Seal Oil Loose Oil Fill Plug? Tighten securely. Performance Curve TOTAL HEAD Max 86 ft CAPACITY Max 264 G.P.M Capacity(US.G.P.M) Figure 21. Performance Curve ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 27...

  • Page 28: Explanation Of Code In Remarks Column

    “Remarks” Column. assembly/kit that can be purchased, or is not available for sale through Multiquip. PAGE 28 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)

  • Page 29: Suggested Spare Parts

    1....0203050120 ..AC CORD W/CORD GLAND 1....0203050060 ..MECHANICAL SEAL 1....0203050081 ..OIL SEAL 1....0203050047 ..LINER 1....0203050003 ..IMPELLER 1....0202020004 ..IMPELLER NUT 2....0203050214 ..PACKING 1....0202020157 ..PACKING 1....0202020435 ..PACKING 1....0202020435 ..SPRING WASHER ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 29...

  • Page 30: Pump Assembly

    PUMP ASSY. PAGE 30 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)
  • Page 31 HEAD COVER 0202020157 PACKING 0203050160 SLEEVE 0203050174 OUTER PIPE 0203050188 STRAINER SET PIPE 0202020191 POWER CORD GLAND CASE 0202020192 BOLT 214-1 0203050214 PACKING 214-2 0203050214 PACKING ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 31...
  • Page 32 PUMP ASSY. PAGE 32 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)
  • Page 33 0202020444 BOLT 0203050D613 CONNECTOR CASE 0203050D614 BOLT 0203050D615 PACKING 0203050D616 PLUG 0203050D617 GLAND RUBBER 0203050D618 GLAND METAL 0203050D619 BOLT 620-1 0203050D620A CONNECTOR 620-2 0203050D620B CONNECTOR ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 33...

  • Page 34: Electric Motor Assembly

    ELECTRIC MOTOR ASSY. PAGE 34 —ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23)
  • Page 35 MOTOR B BRACKET 0203050270 MOTOR ROTOR 0203050D273 MOTOR STATOR 0202020B322 0203050540 A PACKING 0203050541 B PACKING 0203050606 A BEARING, MOTOR 0203050607 B BEARING, MOTOR 0202020B608 WASHER, WAVE ST3050D SUBMERSIBLE PUMP • OPERATION AND PARTS MANUAL — REV. #4 (01/11/23) — PAGE 35...
  • Page 36 © COPYRIGHT 2023, MULTIQUIP INC. Multiquip Inc , the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written permission. All other trademarks are the property of their respective owners and used with permission.

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