Grundfos Redi-Flo4 Installation And Operating Instructions Manual Download Page 1 | Manualshive

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Please leave these instructions with the pump for future reference.

Redi-Flo4

Stainless Steel Submersible Pumps
for Environmental Applications

GRUNDFOS

INSTRUCTIONS

US Installation and operating instructions

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Summary of Contents for Redi-Flo4

Page 1: ...ease leave these instructions with the pump for future reference Redi Flo4 Stainless Steel Submersible Pumps for Environmental Applications GRUNDFOSINSTRUCTIONS US Installation and operating instructions ...

Page 2: ...support the weight of the pump You will find a loose data plate wired to the pump It should be securely mounted at the well or attached to the control box PRE INSTALLATION CHECKLIST Before beginning installation the following checks should be made They are all critical for the proper installation of this submersible pump A Condition of the Well If the pump is to be installed in a new well the well...

Page 3: ...ectrical supply WIRE CABLE TYPE The wire cable used between the pump and control box or panel should be approved for submersible pump applications The conductor insulation should have a continuous Teflon jacket with no splices and must be suitable for use with submersible pumps INSTALLATION The riser pipe or hose should be properly sized and selected based on estimated flow rates and friction loss...

Page 4: ...h the check valve retainer in the discharge chamber of the pump The drop cable should be secured to the riser pipe at frequent intervals using an approved clip or tape to prevent sagging looping and possible cable damage IMPORTANT Plastic and flexible pipe tend to stretch under load This stretching must be taken into account when securing the cable to the riser pipe Leave enough slack between clip...

Page 5: ... line starting is used due to the extremely fast run up time of the motor 0 1 second maximum and the low moment of inertia of the pump and motor Direct on line starting current locked rotor amp is between 4 and 6 5 times the full load current Engine Driven Generators If the Redi Flo4 pump is going to be operated using an engine driven generator we suggest the manufacturer of the generator be contr...

Page 6: ... verify that all electrical connections are made in accordance with the wiring diagram Check to ensure the control box and high voltage surge arrester have been grounded 5 START UP After the pump has been set into the well and the wiring connections have been made the following procedures should be performed A Attach a temporary horizontal length of pipe with installed gate valve to the riser pipe...

Page 7: ...out pulling the pump from the well The following charts cover most of the submersible service work As with any troubleshooting procedure start with the simplest solution first always make all the above ground checks before pulling the pump from the well Usually only two instruments are needed a combination voltmeter ammeter and an ohmmeter These are relatively inexpensive and can be obtained from ...

Page 8: ... supply voltage 4 Motor windings are shorted 5 Pump is damaged causing a motor overload WINDING RESISTANCE How to Measure Turn off power and disconnect the drop cable leads in the control box Using an ohmmeter set the scale selectors to Rx1forvaluesunder10ohmsandRx10 for values over 10 ohms Zero adjustthemeterandmeasurethe resistance between leads Record the values Motor resistance values can be f...

Page 9: ...HOW TO CHECK HOW TO CORRECT 1 No power at pump panel Check for voltage at panel If no voltage at panel check feeder panel for tripped circuits 2 Fuses are blown or circuit breakers are tripped Remove fuses and check for continuity with ohmmeter Replace blown fuses or reset circuit breaker If new fuses blow or circuit breaker trips the electrical installation and motor must be checked 3 Defective c...

Page 10: ...d this to the total vertical distance from the pressure gauge to the water level in the well while the pump is running Refer to the specific pump curve for the shut off head for that pump model If the measured head is close to the curve pump is probably OK If not close to the pump curve remove pump and inspect discharge section Remove blockage repair valve and valve seat if necessary Check for oth...

Page 11: ...fective relay TECHNICAL DATA Table A Minimum Water Flow Requirements for Submersible Pump Motors MOTOR CASING OR SLEEVE MIN FLOW PAST DIAMETER I D IN INCHES THEMOTOR GPM 4 4 1 2 5 7 6 13 7 21 8 30 NOTES 1 A flow inducer or sleeve must be used if the water enters the well above the motor or if there is insufficient water flow past the motor 2 The minimum recommended water velocity over 4 motors is ...

Page 12: ...9 40 5 8 4 62 0 75 0 3 2 3 8 N 770 79 952303 1 1 230 1 40 25 12 8 0 48 4 9 8 63 0 82 0 2 5 3 1 M 770 79 952304 1 1 2 1 230 1 30 35 15 10 0 62 0 13 1 64 0 85 0 1 9 2 3 L 770 79 952305 1 3 1 230 1 75 15 5 3 4 14 0 4 6 59 0 77 0 6 8 8 3 17 3 21 1 L 770 79 453301 1 2 1 230 1 60 15 7 4 5 21 5 6 0 62 0 76 0 4 7 5 7 15 8 19 6 L 770 79 453302 3 4 1 230 1 50 20 9 6 9 31 4 8 4 62 0 75 0 3 2 3 9 14 17 2 L 77...

Page 13: ... can be found in the Electrical Data Chart Table C 5 Measure the resistance between each drop cable lead using an ohmmeter Meter should be set on Rx1 and zero balanced for this measurement 6 The measured values should be approximately equal to the calculated values Wire Resistances DISTANCE FROM 12 AWG WIRE 14 AWG WIRE CONTROL BOX TO RESISTANCE RESISTANCE PUMP MOTOR FT OHMS OHMS 10 0 03 0 05 20 0 ...

Page 14: ...13 NOTES ...

Page 15: ...14 NOTES ...

Page 16: ...ise provided the distributor or dealer will contact GRUNDFOS or an authorized service station for instructions Any defective product to be returned to GRUNDFOS or a service station must be sent freight prepaid documentation supporting the warranty claim and or a Return Material Authorization must be included if so instructed GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR CONSEQUENTIAL DAMAGES L...

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