Page 2 - NOTE
PAGE 2 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) ST-4125D/ST-6125D — TABLE OF CONTENTS Submersible PumpComponent Drawings ST-4125D Submersible Pump Assembly ........... 28-29ST-6125D Submersible Pump Assembly ........... 30-33 Terms and Condition of Sale...
Page 3 - PARTS ORDERING PROCEDURES; Ordering parts has never been easier!; Choose from three easy options:; WE ACCEPT ALL MAJOR CREDIT CARDS!; Standard Orders; Order via Internet; Order; internet; Standard orders; Fax; Standard orders; International Customers
ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) — PAGE 3 PARTS ORDERING PROCEDURES www .m ultiquip .com Ordering parts has never been easier! Choose from three easy options: WE ACCEPT ALL MAJOR CREDIT CARDS! When ordering parts, please supply: ❒ ❒ ❒ ❒ ❒ Dealer A...
Page 4 - NOTES
PAGE 4 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) NOTES
Page 5 - operate equipment with covers,; place the power source circuit
ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) — PAGE 5 ST-4125D/ST-6125D — SAFETY MESSAGE ALERT SYMBOLS Safety precautions should be followed at all times whenoperating this equipment. Failure to read and understand theSafety Messages and Operating Instruction...
Page 6 - RULES FOR SAFE OPERATION; WARNING - Read This Manual
PAGE 6 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) ST-4125D/ST-6125D — RULES FOR SAFE OPERATION The following safety guidelines should always be used whenoperating the ST-4125D/ST-6125D Submersible Pump: GENERAL SAFETY ■ DO NOT operate or service this equi...
Page 8 - DIMENSIONS; Figure 1. Submersible Pump Dimensions
PAGE 8 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) ST-4125D/ST-6125D — DIMENSIONS Figure 1. Submersible Pump Dimensions SUBMERSIBLE PUMP ST-6125D SUBMERSIBLE PUMP ST-4125D 13.5 in (343 mm) 13.5 in (343 mm) 11 in (279 mm) 33.5 in (851 mm) 39 in (991 mm) 11....
Page 9 - SPECIFICATIONS; Motor Rotation –; counterclockwise (CCW) as viewed from the impeller end of the pump.; Mechanical Seal Oil –
ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) — PAGE 9 ST-4125D/ST-6125D — SPECIFICATIONS 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 t...
Page 10 - GENERAL INFORMATION
PAGE 10 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) ST-4125D/ST-6125D — GENERAL INFORMATION The Multiquip Model ST-4125D and ST-6125D submersiblepumps are designed to pump water. These pumps work bestwhen faced with high head applications where you need an...
Page 11 - SUBMERSIBLE PUMP COMPONENTS; Figure 2. Submersible Pump Components
ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) — PAGE 11 ST-4125D/ST-6125D — SUBMERSIBLE PUMP COMPONENTS Figure 2 shows the location of the basic components, forthe ST-4125D and ST-6125D submersible pumps. Listed belowis a brief explanation of each component. 1...
Page 12 - FLOAT SWITCHES; Float Switch Theory; Figure 3. Dual Float Control Switch; control box for 230V; and the
PAGE 12 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) ST-4125D/ST-6125D — FLOAT SWITCHES Float Switch Theory There is a tilt-sensitive mercury switch hermetically sealed withineach float. As the liquid level (water) rises or falls, the float changesits angle...
Page 13 - Control Boxes; Figure 4. Electrical Control Box; CONTROL BOXES; A LWAY S; h a ve a q u a l i f i e d; if
ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) — PAGE 13 Control Boxes Control boxes (Figure 4) are required for remote controland thermal shutdown capability for the submersiblepump. These water-resistant control boxes provide electronic overloadprotection, wa...
Page 16 - Figure 7. Control Box Wiring Diagram; THREE PHASE WIRING; JUMPER
PAGE 16 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) ST-4125D/ST-6125D — CONTROL BOX WIRING DIAGRAM Figure 7. 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 ...
Page 18 - WARNING
PAGE 18 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) Figure 8. Three Phase Control Box/Pump System Diagram ST-4125D/ST-6125D — 3-PHASE POWER INSTALLATION 2. START FLOAT SWITCH. CONNECT TO TERMINALS 1 AND 2 3. STOP FLOAT SWITCH. CONNECT TO TERMINALS 3 AND 4 ...
Page 19 - Figure 10. Control Box Power ON Indicator; Control Box Setup; ON; Figure 12. RESET Button
ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) — PAGE 19 3. Verify that the ON indicator (Figure 10) on the control box is LIT . This means that power is being supplied to the control box. 4. In the manual mode the pump will run continuously. Payclose attention...
Page 20 - OPERATION; Operation; Attach a suitable lifting chain to the eye bolts (Figure 14) on; DO NOT; use this pump for swimming pool applications!
PAGE 20 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) ST-4125D/ST-6125D — OPERATION Operation 1. Attach a suitable lifting chain to the eye bolts (Figure 14) on the pump and using a crane, or similar equipment, lower thepump into place. For applications wher...
Page 21 - POWER; DANGER - Electrocution Hazard
ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) — PAGE 21 4. NEVER grab or touch a live power cord (Figure 16) with wet hands, the possibility exists of electrical shock , electrocu- tion and even death . ST-4125D/ST-6125D — OPERATION Figure 16. Power Cord (Wet ...
Page 22 - MAINTENANCE; LUBRICATION; Figure 17. Checking Hydraulic Oil; LAY PUMP FLAT
PAGE 22 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) ST-4125D/ST-6125D — MAINTENANCE LUBRICATION To check the oil level of the mechanical seal perform thefollowing: 1. Lay the pump (Figure 17) on its side with the oil plug facing upwards. 2. Remove oil fill...
Page 23 - TROUBLESHOOTING; li
ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) — PAGE 23 ST-4125D/ST-6125D — TROUBLESHOOTING Practically all breakdowns can be prevented by proper handling and maintenance inspections, but in the event of abreakdown, use Table 6 (Pump Troubleshooting) as a basi...
Page 24 - Figure 18. Pump Performance Curves
PAGE 24 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) Figure 18. Pump Performance Curves ST-4125D/ST-6125D — PERFORMANCE CURVES 0 100 200 300 ST4125D Performance Curve Capacity(US.G.P.M) Total Head (Feet) 60 40 20 TOTAL HEAD CAPACITY Max 125 ft Max 464 G.P.M...
Page 26 - EXPLANATION OF CODE IN REMARKS COLUMN; REMARKS
PAGE 26 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) EXPLANATION OF CODE IN REMARKS COLUMN The contents and part numbers listed in the parts section aresubject to change without notice . Multiquip does not guarantee the availibility of the parts listed. Whe...
Page 34 - TERMS AND CONDITIONS OF SALE — PARTS
PAGE 34 — ST-4125D/ST-6125D SUBMERSIBLE PUMPS — OPERATION AND PARTS MANUAL — REV. #1 (06/12/08) PAYMENT TERMS Terms of payment for parts are net 30 days. FREIGHT POLICY All parts orders will be shipped collect orprepaid with the charges added to the invoice.All shipments are F.O.B. point of origin.M...
Page 36 - OPERATION AND PARTS MANUAL; Your Local Dealer is:; HERE’S HOW TO GET HELP; PLEASE HAVE THE MODEL AND SERIAL; UNITED STATES; Barra de Tijuca - Rio de Janeiro
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 2008, MULTIQUIP INC. Multiquip Inc and the MQ logo are registered trademarks of Multiquip Inc. and may not be used, reproduced, or altered without written ...
