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Summary of Contents for Grundfos Redi-Flo 2
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Page 1: Operating Instructions
Redi-Flo Variable Performance Pumps Installation and Operating Instructions Please leave these instructions with the Redi-Flo equipment for future reference... - Page 2 GRUNDFOS' option, without charge, F.O.B. GRUNDFOS' factory or authorized service station, any product of GRUNDFOS manufacture. GRUNDFOS will not be liable for any costs of removal, installation, transportation, or any other charges which may arise in connection with a warranty claim.
- Page 3 GRUNDFOS must receive this certification prior to receiving the pump. If not, GRUNDFOS will refuse to accept delivery of the pump. In these cases, all costs incurred in returning the product to the customer will be paid by the customer. Contact your distributor for details on returning Redi-Flo products for servicing.
- Page 4 ELECTRIC Input 115V +/- 10% / 1 PH / 48-62 Hz / 23A 230V +/- 10% / 1 PH / 48-62 Hz / 23A Output with 115V Input 1.5 kw / 400 Hz / 220V / 3 PH / 5.5A (RF2) 1.5 kw / 80 Hz / 230V / 3 PH / 5.5A (RF4) Output with 230V Input 1.5 kw / 400 Hz / 220V / 3 PH / 5.5A (RF2)
- Page 5 ELECTRIC Full Load Rating .5 HP / 220V / 3 PH / 400 Hz / 5.5A Maximum Current (SFA) 5.5 amps Motor Protection Thermal overload - Thermik Geratebau, Series SY6 - (176°F [80°C]) Current Overload - Incorporated into Redi-Flo VFD (9.0A for 10 seconds) PIPING CONNECTION Discharge Port "...
- Page 6 ELECTRIC Full Load Rating 2.0 HP / 230V / 3 PH / 60 HZ / 6.7A Service Factor 1.25 Maximum Current (SFA) 7.5 amps Motor Protection Redi-Flo VFD supplies protection for motor Motor has no internal protection PIPING CONNECTION Discharge Port 5E8 -- 1"...
- Page 7 Output Ground Fault Protection Built-in ground fault sensing for protection of Redi-Flo VFD and down hole equipment. Grundfos Repairable The Redi-Flo VFD can be repaired at all Grundfos Customer Service Centers for fast turn- around. Dry Run Protection (Input Undercurrent Trip) The Redi-Flo VFD can protect pumping equipment from damage as a result of "dry run"/ "pump...
- Page 8 External Speed Reference Signal Following Capability The Redi-Flo VFD will follow an external 4-20 mA speed reference signal when the mode selector dial is switched from Manual to Automatic Operation (RF2A and RF4A). Isolated 24 Volt DC Power Supply The Redi-Flo VFD is equipped with an isolated 24 VDC-100 mA power supply for use as a loop power source for an external 4-20mA transducer (transmitter) or flowmeter.
- Page 9 To operate the system you will also need: 1. A discharge hose or pipe to connect to the pump (See Figure 4). 2. An electrical plug to connect the Redi-Flo VFD power cord to your portable generator may be needed if the supplied plug is not compatible with your generator (See Figure 5).
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Page 10: Safety Warning
SAFETY WARNING All electrical work should be performed by a qualified electrician in accordance with the latest edition of the National Electrical Code, local codes and regulations. Unpack the components of the Redi-Flo Variable Performance System. With Redi-Flo2® pumps, the pump will be packed in the center of the motor lead spool as shown on page 6, Figure 2. - Page 11 To protect against surface water entering the well and contaminating the well, the well should be finished off utilizing a locally approved well seal, unit or a Grundfos Redi-Flo well seal. The motor lead should be secured to the discharge pipe at frequent intervals to prevent sagging, looping and possible motor lead damage.
- Page 12 To operate the Redi-Flo VFD system, simply: 1. Submerge the RF2 or RF4 pump in the water to be pumped. #2 and #3 for operation with generator only. 2. If using a generator, start the generator and allow it to warm up. Figure 7 3.
- Page 13 If the pump is used to purge a well, start the pump at minimum speed and gradually increase to maximum speed. Do not stop the pump until the pumped fluid contains no visible particles (to avoid blockage within the pump). Redi-Flo products are not recommended for well development.
- Page 14 F07-BASE FREQUENCY(MAINS F): Factory preset at 60HZ. Base Frequency is adjustable to 50HZ or 60HZ. To adjust base frequency follow the steps on the flowchart on page 14. F08-MOTOR OVERLOAD(IXT LEVEL): Factory preset at 110%. The Redi-Flo VFD will trip after 1 minute when output current exceeds 5.5A for Redi-Flo2® pumps and 7.5A for Redi-Flo4™...
- Page 15 CAUTION The internals of the Redi-Flo VFD contain High Voltages! Extreme caution should be exercised when making adjustments. DESCRIPTION RANGE UNITS DEFAULT RF2 Max. Output Frequency 100.0-400.0 Hz 1.0 Hz 400.0 Hz RF2 Min. Output Frequency 0.0-100.0 Hz 1.0 Hz 25.0 Hz RF4 Max.
- Page 16 Figure 8 Phillips screws Use flowchart below to change operator adjustable control features. Page 14...
- Page 17 The Input voltage can be changed between 115V and 230V by changing the line input connections as shown in Figure 9 below. CAUTION ! WARNING- If the Redi-Flo VFD is miswired for the incoming voltage internal damage may occur to the drive! This drive contains possibly lethal AC voltage when AC power is connected.
- Page 18 Figure 11: Diagram of input and output terminals located on top circuit board (behind cover) • 24VDC: 100mA power supply to power external process loop. To connect to this supply, connect to terminals 1 and 2 as labeled in Figure 11. •...
- Page 19 The Redi-Flo VFD can indicate the presence of a pending fault by the use of status lights on the digital readout display see Figure 13 below. Figure 13 Status 1 • Flashing: Input Current limit has been reached. Even if speed dial is turned to increase speed, the speed is locked and will not rise.
- Page 20 • Defective motor VFD overload • The VFD is overloaded •Reduce the load by reducing the frequency • Defective VFD •Have VFD checked by Grundfos technician Ground fault • Motor is grounded •Check motor and lead with megohmmeter • Cable is damaged and repair or replace as needed.
- Page 21 The Redi-Flo2® pump can be dismantled and reassembled quickly and easily by referring to the diagram on page 27 and following these steps: DISMANTLING 1. Shut the pump off by placing the Redi-Flo VFD RSR switch in the stop position. 2.
- Page 22 If the pump is moved from well to well, it should be thoroughly decontaminated prior to being installed in the next well. In addition to cleaning the individual components inside and outside, the water in the pump motor should be replaced using the syringe that came with your pump. This can be accomplished through the following steps: 1.
- Page 23 To replace the motor lead, refer to the diagram on page 27 and follow these steps: REMOVING THE OLD MOTOR LEAD 1. Make sure the power is turned OFF, the Redi-Flo VFD is turned OFF, and the motor lead is not connected to the Redi-Flo VFD.
- Page 24 14. While pushing the lead down into the motor lead hole, use the special Motor Lead Screwdriver to tighten the Motor Lead Screw (position 14) into place. Repeat for the other two lead wires. 15. Replace the Suction Interconnector (position 10). Replace the Ground Motor Screw (position 13).
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Page 25: Winding Resistance
Winding Resistance Turn the power off and disconnect the mo- Lead Length Ohm Value OHMMETER tor lead from the converter. Using an ohm- R x 000 R x 000 R x 000 R x 000 0 ft ..... 3.0 - 3.5 R x 000 R x 000 meter, set the scale to R X 1. - Page 26 There is no periodic maintenance required for Redi-Flo4™ products. Should a problem develop, the following inspections should be performed: If the pump is operating at a decreased capacity and the pump end does not appear to be the cause, the motor should be checked. Remove the pump end from the motor first by loosening and removing the four "...
- Page 27 Removing the Old Motor Lead 1. Make sure the motor lead is not connected to the Redi-Flo VFD. Remove the cable guard from the pump end. Remove the pump end from the motor by loosening and removing the four " nuts from the motor studs and pulling the pump end off the motor.
- Page 28 Reattaching Pump End to Motor 1. Fit the pump end to the motor making sure the motor lead aligns with the recess in the pump inlet and the motor studs align with the holes in the bottom of the pump inlet. 2.
- Page 29 Pos. Part No. Used Part Description Per Pump Number Inlet Screen 1A0004 Pump Housing 1/2" NPT 1A0044 Guide Vane see Service Kits Wear Ring " Impeller " Spacer Ring " Wear Plate " Motor Lead Assembly see Pos. 13 - 18 Shaft not available * Suction Interconnector...
- Page 30 Replacement parts, service tools, and motor leads are available using the following part numbers: Service Kits Position No. Part Number In Diagram Part Description No. In Kit Guide Vane ........2 Wear Ring ........2 Impeller .......... 2 125061 Spacer Ring ........2 Wear Plate ........
- Page 31 DESCRIPTION PART NUMBER SI/MP1, 115/230V, VFD, Complete 96022675 115V Power Cord ID8618 MOV Replacement Pack 1A032Z DESCRIPTION PART NUMBER 5E8 PE 08030008 10E5 PE 09030005 16E4 PE 10030004 25E3 PE 05030003 2 HP - 3 PH - 230V MS402E 96022532 DESCRIPTION PART NUMBER Splice Kit for RF4 VFD Receptacle...
- Page 32 DESCRIPTION PART NUMBER Redi-Flo2® (MP1) Well Seal 2" SCH 5-20 Well Seal 1A016Z 2" SCH 40-80 Well Seal 1A5111 4" SCH 5-20 Well Seal 1A017Z 4" SCH 40-80 Well Seal 1A5110 Redi-Flo2® Safety Cable Bracket 1A0019 (Placed between the top of the pump and discharge piping connector) Redi-Flo2®...
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