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GRUNDFOS INSTRUCTIONS
Redi-Flo4
Stainless Steel Submersible Pumps
for Environmental Applications
US Installation and operating instructions
For Sales & Service Contact
2650 E. 40th Ave. • Denver, CO 80205
Phone 303-320-4764 • Fax 303-322-7242
1-800-833-7958
www.geotechenv.com
Please leave these instructions with the pump for future reference.
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Troubleshooting
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Summary of Contents for Grundfos Redi-Flo4
- Page 1 GRUNDFOS INSTRUCTIONS Redi-Flo4 Stainless Steel Submersible Pumps for Environmental Applications US Installation and operating instructions For Sales & Service Contact 2650 E. 40th Ave. • Denver, CO 80205 Phone 303-320-4764 • Fax 303-322-7242 1-800-833-7958 www.geotechenv.com Please leave these instructions with the pump for future reference.
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Page 2: Safety Warning
Examine the components carefully to make sure no damage has occurred to the pump-end, motor, cable or control box during shipment. This Grundfos Redi-Flo4 Environmental Pump should remain in its shipping carton until it is ready to be installed. The carton is specially designed to protect it from damage. During unpacking and prior to installation, make sure that the pump is not contaminated, dropped or mishandled. -
Page 3: Installation Depth
PRE-INSTALLATION CHECKLIST B. Condition of the Water Redi-Flo4 pumps are designed for pumping cold groundwater that is free of air or gases. Decreased pump performance and life expectancy can occur if the groundwater is not cold or contains air or gases. - Page 4 When these types of pipe are used, it is recommended that a safety cable be attached to the pump to lower and raise it. The discharge piece of Redi-Flo4 submersibles is designed to accommodate this cable (Figure 4). Protect the Well from Contamination While installing the pump, proper care should be used not to introduce foreign objects or contaminants into the well.
- Page 5 (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 Single-Phase Wiring Diagram for...
- Page 6 ELECTRICAL Control Box and Surge Arrester Grounding The control box shall be permanently grounded in accordance with the National Electrical Code and local codes or regulations. The ground wire should be a bare copper conductor at least the same size as the drop cable wire size. The ground wire should be run as short a distance as possible and be securely fastened to a true grounding point.
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Page 7: Operation
OPERATION A. The pump and system should be periodically checked for water quantity, pressure, drawdown, periods of cycling, and operation of controls. Under no circumstances should be the pump be operated for any prolonged periods of time with the discharge valve closed. This can result in motor and pump damage due to overheating. -
Page 8: Preliminary Tests
TROUBLESHOOTING Preliminary Tests How to Measure What it Means SUPPLY VOLTAGE By means of a voltmeter, which has When the motor is under load, the been set to the proper scale, measure voltage should be within ± 10% of the the voltage at the control box. -
Page 9: Troubleshooting Chart
TROUBLESHOOTING CHART OHM VALUE MEGAOHM VALUE CONDITION OF MOTOR AND LEADS Motor not yet installed: 2,000,000 (or more) New Motor. 1,000,000 (or more) Used motor which can be reinstalled in the well. Motor in well (Ohm readings are for drop cable plus motor): 500,000 - 1,000,000 0.5 - 1.0 A motor in reasonably good condition. - Page 10 TROUBLESHOOTING CHART B. Pump Runs But Does Not Deliver Water POSSIBLE CAUSES HOW TO CHECK HOW TO CORRECT 1. Groundwater level in Check well draw-down. Lower pump if possible. If not, well is too low or well is throttle discharge valve and install collapsed.
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Page 11: Technical Data
TROUBLESHOOTING CHART E. Fuses Blow or Circuit Breakers Trip POSSIBLE CAUSES HOW TO CHECK HOW TO CORRECT 1. High or low voltage. Check voltage at pump panel. If not If wire size is correct, contact power within ± 10%, check wire size and company. - Page 12 TECHNICAL DATA Table C Electrical Data – 60 Hz Submersible Pump Motors GRUNDFOS MOTORS LINE-TO-LINE CIRC. DUAL AMPERAGE FULL LOAD MAX. GRUNDFOS RESISTANCE SER. BRK. OR ELEMENT FULL LOCK S.F. POWER CODE THRUST PART (OHMS) PH VOLT FACT. STD. FUSE FUSE LOAD ROTOR AMPS EFF.
- Page 13 TECHNICAL DATA Table D Total Resistance of Drop Cable (OHMS) The values shown in this table are for copper conductors. Values are for the total resistance of drop cable from the control box to the motor and back. To determine the resistance: 1.
- Page 14 NOTES...
- Page 15 NOTES...
- Page 16 Redi-Flo4 Environmental Pumps manufactured by GRUNDFOS PUMPS CORPORATION (GRUNDFOS) are warranted to the original user only to be free of defects in material and workmanship for a period of 24 months from date of installation, but not more than 30 months from date of manufacture.
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