Page 2 - TABLE OF CONTENTS
PAGE 2 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) TABLE OF CONTENTS ST4125G/ST6125GSubmersible Pump Table Of Contents .................................................... 2Parts Ordering Procedures ...................................... 3Safety Information ..............
Page 3 - NOTES
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 3 NOTES
Page 4 - SAFETY INFORMATION; SAFETY MESSAGES; DANGER; NOTICE; Burn hazards; Symbol; Electric shock hazards
PAGE 4 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) SAFETY INFORMATION Do not operate or service the equipment before reading the entire manual. Safety precautions should be followed at all times when operating this equipment. Failure to read and understand the safety m...
Page 5 - GENERAL SAFETY
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 5 SAFETY INFORMATION GENERAL SAFETY CAUTION NEVER operate this equipment without proper protective clothing, shatterproof glasses, respiratory protection, hearing protection, steel-toed boots and other protective device...
Page 6 - PUMP SAFETY; ELECTRICAL SAFETY
PAGE 6 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) SAFETY INFORMATION PUMP SAFETY DANGER NEVER operate the equipment in an explosive atmosphere or near combustible materials. An explosion or fi re could result causing severe bodily harm or even death. WARNING Accid...
Page 8 - Motor Rotation; thermal overload protection.
PAGE 8 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) ST4125G/ST6125G SUBMERSIBLE PUMP — SPECIFICATIONS Table 1. Specifi cations Model ST4125G ST6125G Type Centrifugal Submersible Pump Centrifugal Submersible Pump Impeller Cast Ductile Iron Cast Ductile Iron Discharge Siz...
Page 11 - Figure 2. Submersible Pump Components
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 11 ST4125G/ST6125G — COMPONENTS Figure 2 shows the location of the basic components, for the ST4125G and ST6125G submersible pumps. Listed below is a brief explanation of each component. 1. Strainer Base – This strainer b...
Page 12 - FLOAT SWITCHES; Mechanical Float Switch; The mechanical fl oat switch control will turn; ON; Pumping Range; Table 2. Pumping Range; Design Features; Suitable for most liquid environments.
PAGE 12 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) FLOAT SWITCHES Mechanical Float Switch Mechanically activated fl oat switches offer a reliable low current control for dewatering applications. How It Works The mechanical fl oat switch control will turn ON (close) wh...
Page 13 - Float Switches; Figure 6. Float Switch Application; Mounting The Float Switches; cord tether length; DO NOT
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 13 Float Switches For unattended operation of the submersible pump two single fl oat switches (Model SW-1WOPA) will be required. These fl oat switches can be connected directly to a control box (bare wires) and will allow...
Page 14 - Each control box will require the use of; Figure 7. Electrical Control Box
PAGE 14 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) FLOAT SWITCHES CB12/CB14 Control Boxes For remote pumping applications, both submersible pumps, require a control box (Figure 7). The CB12 control box requires 230VAC, 3-phase input voltage for normal operation, while...
Page 15 - CONTROL BOX INSTALLATION; Control Box Installation; h ave q u a l i f i e d; CONTROL BOX MOUNTING; use the
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 15 CONTROL BOX INSTALLATION Control Box Installation The following procedure outlines the steps for connecting the pump to a control box. DANGER The ST4125G and ST6125G submersible pumps are designed to work with a contro...
Page 16 - Table 5. Dual Float switch Connections; Start
PAGE 16 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) CONTROL BOX INSTALLATION Connecting SW-1WOPA Float Switches to Control Box 1. Remove the fl oat switch input connector housing, then route the fl oat switch wires through the cable gland on the control box. Attach the...
Page 17 - MOTOR WINDING CONFIGURATION
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 17 230/460 VAC Voltage Selection The ST4125G/ST6125G submersible pumps are factory set at 230 VAC. To change the voltage from 230 VAC to 460 VAC, reference Figure 8: T2 T1 T3 T4 T7 T5 BLACK BLACK GREEN GROUND RED WHITE BL...
Page 18 - CB12/CB14 CONTROL BOX POWER CONNECTIONS; Input Power Connections
PAGE 18 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) CB12/CB14 CONTROL BOX POWER CONNECTIONS 3-Phase Power Installation (Input to Control Box) 1. The 3-phase input power cord should have four wires. Each wire is color coded. The colors are RED , WHITE , BLACK and GREEN ...
Page 19 - CB12/CB14 CONTROL BOX WIRING LAYOUT; Figure 9. Three Phase
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 19 CB12/CB14 CONTROL BOX WIRING LAYOUT 2. START FLOAT SWITCH. CONNECT TO TERMINALS 1 AND 2 3. STOP FLOAT SWITCH. CONNECT TO TERMINALS 3 AND 4 MOUNT CONTROL BOX IN AN UP-LEFT VERTICAL POSITION AS SHOWN. FLOAT SWITCH TERMIN...
Page 20 - Pump Placement; Attach a suitable lifting chain to the eye bolts (Figure 10); Figure 10. Placing the Submersible Pump; Make sure the pump is always placed in an upright; OPERATION
PAGE 20 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) Pump Placement 1. Attach a suitable lifting chain to the eye bolts (Figure 10) on the pump. Use a crane, or similar lifting device and lower the pump into place. For applications where there is an excessive amount of ...
Page 21 - Figure 15. RESET Button; stop fl oat; Reset Button
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 21 OPERATION 1. When the electronic overload module detects an overload condition, the pump will shut down. Check the pump and correct the cause of ther overload. 2. Let the pump cool down, then press the RESET button (se...
Page 22 - MAINTENANCE; Lubrication; Checking Lubrication Oil Level; Figure 17. Adding Lubrication Oil; Inspecting Lubrication Oil (Mechanical Seal); Figure 18. Lubrication Oil Inspection; MUST
PAGE 22 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) MAINTENANCE Lubrication To check the lubrication oil level of the mechanical seal perform the following: Checking Lubrication Oil Level 1. Lay the pump (Figure 17) on its side with the oil plug facing upwards. 2. Remo...
Page 23 - Impeller Removal; Figure 19. Impeller Removal; Long Term Storage
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 23 MAINTENANCE Impeller Removal Refer to the the following procedure and Figure 19 for the removal of the impeller. 1. Remove oil plug (item 193) and o-ring (item 194). Drain oil from oil chamber as referenced in Figure 1...
Page 24 - Electrical Insulation Testing; Figure 20. Insulation Tester Application
PAGE 24 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) MAINTENANCE Electrical Insulation Testing Why perform electrical insulation testing? Electrical insulation starts to age as soon as it is made. Harsh environments, especially those with extreme temperature changes and...
Page 25 - TROUBLESHOOTING; Table 8. Pump Troubleshooting; SYMPTOM; Pump Fails To Start
ST4125G/ST6125G SUBMERSIBLE PUMP• OPERATION MANUAL — REV. #0 (11/18/10) — PAGE 25 TROUBLESHOOTING Table 8. Pump Troubleshooting SYMPTOM POSSIBLE PROBLEM SOLUTION Pump Fails To Start Incorrect voltage/amps? Check that the proper voltage, 230 or 460 VAC, 60 Hz, 3-phase is being supplied to the pump. A...
Page 26 - CB12/CB14 CONTROL BOX WIRING DIAGRAM; THREE PHASE WIRING; JUMPER; Figure 21. CB12/CB14 Control Box Wiring Diagram
PAGE 26 — ST4125G/ST6125G SUBMERSIBLE PUMP • OPERATION MANUAL — REV. #0 (11/18/10) CB12/CB14 CONTROL BOX WIRING DIAGRAM L1 THREE PHASE WIRING CONNECTIONS EXTERNAL 3-PHASE (230 OR 460 VOLT) POWER SOURCE CIRCUIT BREAKER RED WHITE BLACK L1 L2 L3 GREEN GROUND G ON INDICATOR LAMP M A1 A2 4 3 2 3 4 1 STOP...
Page 28 - OPERATION AND PARTS MANUAL; Your Local Dealer is:; HERE’S HOW TO GET HELP; PLEASE HAVE THE MODEL AND SERIAL; UNITED STATES; CANADA
OPERATION AND PARTS MANUAL Your Local Dealer is: HERE’S HOW TO GET HELP PLEASE HAVE THE MODEL AND SERIAL NUMBER ON-HAND WHEN CALLING © COPYRIGHT 2010, MULTIQUIP INC. Multiquip Inc and the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written ...
