Grundfos Redi-Flo 2 Operating instructions

LIMITED WARRANTY
All Redi-Flo products manufactured by GRUNDFOS are warranted to the
original user only to be free of defects in material and workmanship for the
following periods of time. Redi-Flo VFD and Redi-Flo4™ variable performance
pumps: 18 months from the date of installation, but not more than 24 months
from the date of manufacture; Redi-Flo2® pumps; 12 months from date of
installation, but not more than 18 months from the date of manufacture,
whichever comes first.
GRUNDFOS' liability under this warranty shall be limited to repairing or
replacing at GRUNDFOS' option, without charge, F.O.B. GRUNDFOS' factory
or authorized service station, any product of GRUNDFOS manufacture.
GRUNDFOSwillnotbeliableforanycostsofremoval,installation,transportation,
or any other charges which may arise in connection with a warranty claim.
Products which are sold but not manufactured by GRUNDFOS are subject to
the warranty provided by the manufacturer of said products and not by
GRUNDFOS' warranty. GRUNDFOS will not be liable for damage or wear to
products caused by abnormal operating conditions, accident, abuse, misuse,
unauthorizedalterationorrepair,oriftheproductwasnotinstalledinaccordance
with GRUNDFOS' printed installation and operation instructions.
To obtain service under this warranty, contact the Distributor or Dealer from
which it was purchased to obtain instructions. Under no circumstances
should defective product be returned to the Distributor, Dealer, or
GRUNDFOS without a Return Materials Authorization (RMA).
GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES ARISING FROM
INSTALLATION, USE, OR ANY OTHER CAUSES. THERE ARE NO EXPRESS
OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE, WHICH EXTEND BEYOND THOSE
WARRANTIES DESCRIBED OR REFERRED TO ABOVE.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages and some jurisdictions do not allow limitations on how
long implied warranties may last. Therefore, the above limitations or exclusions
may not apply to you. This warranty gives you specific legal rights and you may
also have other rights which vary from jurisdiction to jurisdiction.
LIMITED WARRANTY
L-RF-IO-006 06/00
PRINTED IN USA
Installation and
Operating Instructions
Redi-Flo Variable
Performance Pumps
Please leave these instructions with the
Redi-Flo equipment for future reference
Grundfos Pumps Corporation • 3131 N. Business Park Ave., Fresno, CA 93727
Customer Service Centers: Allentown, PA • Fresno, CA
Phone [phone] • Fax [phone]
Canada: Oakville, ONT • Mexico: Apodaca, N.L.
Visit our website at www.us.grundfos.com
TR'sVFDIO.p65 5/31/00, 9:02 AM1 Downloaded from www.Manualslib.com manuals search engine

LIMITED WARRANTY
All Redi-Flo products manufactured by GRUNDFOS are warranted to the
original user only to be free of defects in material and workmanship for the
following periods of time. Redi-Flo VFD and Redi-Flo4™ variable performance
pumps: 18 months from the date of installation, but not more than 24 months
from the date of manufacture; Redi-Flo2® pumps; 12 months from date of
installation, but not more than 18 months from the date of manufacture,
whichever comes first.
GRUNDFOS' liability under this warranty shall be limited to repairing or
replacing at GRUNDFOS' option, without charge, F.O.B. GRUNDFOS' factory
or authorized service station, any product of GRUNDFOS manufacture.
GRUNDFOSwillnotbeliableforanycostsofremoval,installation,transportation,
or any other charges which may arise in connection with a warranty claim.
Products which are sold but not manufactured by GRUNDFOS are subject to
the warranty provided by the manufacturer of said products and not by
GRUNDFOS' warranty. GRUNDFOS will not be liable for damage or wear to
products caused by abnormal operating conditions, accident, abuse, misuse,
unauthorizedalterationorrepair,oriftheproductwasnotinstalledinaccordance
with GRUNDFOS' printed installation and operation instructions.
To obtain service under this warranty, contact the Distributor or Dealer from
which it was purchased to obtain instructions. Under no circumstances
should defective product be returned to the Distributor, Dealer, or
GRUNDFOS without a Return Materials Authorization (RMA).
GRUNDFOS WILL NOT BE LIABLE FOR ANY INCIDENTAL OR
CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES ARISING FROM
INSTALLATION, USE, OR ANY OTHER CAUSES. THERE ARE NO EXPRESS
OR IMPLIED WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE, WHICH EXTEND BEYOND THOSE
WARRANTIES DESCRIBED OR REFERRED TO ABOVE.
Some jurisdictions do not allow the exclusion or limitation of incidental or
consequential damages and some jurisdictions do not allow limitations on how
long implied warranties may last. Therefore, the above limitations or exclusions
may not apply to you. This warranty gives you specific legal rights and you may
also have other rights which vary from jurisdiction to jurisdiction.
LIMITED WARRANTY
L-RF-IO-006 06/00
PRINTED IN USA
Installation and
Operating Instructions
Redi-Flo Variable
Performance Pumps
Please leave these instructions with the
Redi-Flo equipment for future reference
Grundfos Pumps Corporation • 3131 N. Business Park Ave., Fresno, CA 93727
Customer Service Centers: Allentown, PA • Fresno, CA
Phone [phone] • Fax [phone]
Canada: Oakville, ONT • Mexico: Apodaca, N.L.
Visit our website at www.us.grundfos.com
TR'sVFDIO.p65 5/31/00, 9:02 AM1

Electrical Work
Before beginning installation procedures, these installation and operating instructions should
be studied carefully. All electrical work should be carried out by a qualified electrician in
accordance with the latest edition of the National Electrical Code(NEC), local codes and
regulations.
Adherence To Environmental
Regulations
When handling and operating the Redi-Flo Variable Performance Pump system, all
environmental regulations concerning the handling of hazardous materials must be observed.
When the pump is taken out of operation, great care should be taken to ensure that the pump
containsnohazardousmaterialsthatmightcauseinjurytohumanhealthortotheenvironment.
Returning a Pump for Service
Only pumps that are certified as uncontaminated will be accepted by GRUNDFOS for
servicing. 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.
ElectricalHazards
The Redi-Flo Variable Performance Pump system is not approved for Class 1, Division 1,
GroupDlocations asspecifiedby theNationalElectrical Code(NEC).Consult localauthorities
and regulations if you have any doubt about its suitability for a specific application.
WARNING
Hazard of Electric Shock: Do not expose the Redi-Flo Variable Frequency Drive
(VFD) to moisture. If unavoidable exposure to moisture occurs, disconnect the
electrical supply power immediately and have the unit inspected by an authorized
service center to insure all safety features of the unit are in tact. To reduce the
risk of electrical shock during operation of this Redi-Flo product, extreme care
shouldbetakentoensureadequategrounding. All Redi-Flo productsareprovided
withgrounding provisionswhich complywith NEC guidelines. Alwaysverify power
source is properly grounded and there is a solid ground connection between the
powersource and theRedi-Flo VFD before energizing. Ifthe means of connection
tothe supply power source is other than grounded metal conduit, ground the Redi-
Flo VFD back to the service by connecting a copper conductor, at least the size
ofthecircuitsupplying theRedi-FloVFD, tothegrounding screw/terminal provided
within the wiring compartment of the Redi-Flo VFD.
Page 1
SAFETY WARNING
ELECTRIC
Redi-Flo Variable Frequency Drive
(Type: SI/MP1-115/230V)
TECHNICAL SPECIFICATIONS
DIMENSIONS AND WEIGHT
PROTECTIVE CASE CONSTRUCTION
STORAGE CONDITIONS
OPERATING CONDITIONS VFD ONLY
MINIMUM GENERATOR SIZE
Page 2
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)
2.0 kw / 100 Hz / 230V / 3 PH / 6.7A (RF4)
Overload Rating 5.5A for 1 minute (RF2)
7.5A for 1 minute (RF4)
Acceleration Time (factory preset) 0 to 400 Hz: 5 seconds (RF2)
0 to 100 Hz: 5 seconds (RF4)
Deacceleration Time (factory preset) 400 to 0 Hz: 5 seconds (RF2)
100 to 0 Hz: 5 seconds (RF4)
Recommended Input Protection (115V) Fuse, 1 each, 250V, 25A, UL Class RK1
or circuit breaker, 25A/300V/1P
Recommended Input Protection (230V) Fuse, 2 each, 250V, 25A, UL Class RK1
or circuit breaker, 25A/300V/2P
Power Cord SJTW, 14 AWG, 10', NEMA PH-185 Plug
Output Ground Fault Protection Built-in (1000 mA)
Minimum Frequency (factory preset) 115 or 230V 25 Hz
Maximum Frequency (factory preset) 115 or 230V 400 Hz (RF2)
115V 80 Hz* (RF4)
*Auto Frequency Limiting 230V 100 Hz (RF4)
Dimensions Protective case is 9"x14"x18 1
¤2"
VFD Only - 6" x 7 1
¤2" x 10 1 ¤2 "
Net Weight (VFD, Cord & Case) 20 lbs. (10 1
¤2lbs. - VFD only)
Ambient Temperature 14°F to 120°F (-10°C to 50°C)
Elevation Up to 3,300 ft. without derating
Ambient Temperature -4°F to 140°F (-20°C to 60°C)
Relative Humidity 95%, Non-condensing
Case High density polyethylene
Trim Aluminum
Lock Military twist type, steel with zinc plating
Redi-Flo2®
For Generators with Voltage Regulation 2500 Watts at 115/230 VAC, single phase
For Generators without Voltage Regulation 5000 Watts at 115/230 VAC, single phase
Recommended For Optimal Performance 4000 Watts at 115/230 VAC, single phase
with voltage regulation.
Redi-Flo4™
For Generators with Voltage Regulation 3400 Watts at 115/230 VAC, single phase
For Generators without Voltage Regulation 6700 Watts at 115/230 VAC, single phase
Recommended For Optimal Performance 5400 Watts at 115/230 VAC, single phase
with voltage regulation.
Note: RF2 = Redi-Flo2® RF4 = Redi-Flo4™
TR'sVFDIO.p65 5/31/00, 9:02 AM2

Electrical Work
Before beginning installation procedures, these installation and operating instructions should
be studied carefully. All electrical work should be carried out by a qualified electrician in
accordance with the latest edition of the National Electrical Code(NEC), local codes and
regulations.
Adherence To Environmental
Regulations
When handling and operating the Redi-Flo Variable Performance Pump system, all
environmental regulations concerning the handling of hazardous materials must be observed.
When the pump is taken out of operation, great care should be taken to ensure that the pump
containsnohazardousmaterialsthatmightcauseinjurytohumanhealthortotheenvironment.
Returning a Pump for Service
Only pumps that are certified as uncontaminated will be accepted by GRUNDFOS for
servicing. 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.
ElectricalHazards
The Redi-Flo Variable Performance Pump system is not approved for Class 1, Division 1,
GroupDlocationsas specifiedbythe National ElectricalCode(NEC). Consultlocalauthorities
and regulations if you have any doubt about its suitability for a specific application.
WARNING
Hazard of Electric Shock: Do not expose the Redi-Flo Variable Frequency Drive
(VFD) to moisture. If unavoidable exposure to moisture occurs, disconnect the
electrical supply power immediately and have the unit inspected by an authorized
service center to insure all safety features of the unit are in tact. To reduce the
risk of electrical shock during operation of this Redi-Flo product, extreme care
shouldbetakentoensureadequategrounding. AllRedi-Floproductsareprovided
withgrounding provisionswhich complywith NECguidelines. Always verifypower
source is properly grounded and there is a solid ground connection between the
powersource and theRedi-Flo VFD before energizing. If the means of connection
tothe supply power source is other than grounded metal conduit, groundthe Redi-
Flo VFD back to the service by connecting a copper conductor, at least the size
ofthecircuitsupplying the Redi-FloVFD,to the groundingscrew/terminalprovided
within the wiring compartment of the Redi-Flo VFD.
Page 1
SAFETY WARNING
ELECTRIC
Redi-Flo Variable Frequency Drive
(Type: SI/MP1-115/230V)
TECHNICAL SPECIFICATIONS
DIMENSIONS AND WEIGHT
PROTECTIVE CASE CONSTRUCTION
STORAGE CONDITIONS
OPERATING CONDITIONS VFD ONLY
MINIMUM GENERATOR SIZE
Page 2
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)
2.0 kw / 100 Hz / 230V / 3 PH / 6.7A (RF4)
Overload Rating 5.5A for 1 minute (RF2)
7.5A for 1 minute (RF4)
Acceleration Time (factory preset) 0 to 400 Hz: 5 seconds (RF2)
0 to 100 Hz: 5 seconds (RF4)
Deacceleration Time (factory preset) 400 to 0 Hz: 5 seconds (RF2)
100 to 0 Hz: 5 seconds (RF4)
Recommended Input Protection (115V) Fuse, 1 each, 250V, 25A, UL Class RK1
or circuit breaker, 25A/300V/1P
Recommended Input Protection (230V) Fuse, 2 each, 250V, 25A, UL Class RK1
or circuit breaker, 25A/300V/2P
Power Cord SJTW, 14 AWG, 10', NEMA PH-185 Plug
Output Ground Fault Protection Built-in (1000 mA)
Minimum Frequency (factory preset) 115 or 230V 25 Hz
Maximum Frequency (factory preset) 115 or 230V 400 Hz (RF2)
115V 80 Hz* (RF4)
*Auto Frequency Limiting 230V 100 Hz (RF4)
Dimensions Protective case is 9"x14"x18 1
¤2"
VFD Only - 6" x 7 1
¤2" x 10 1 ¤2 "
Net Weight (VFD, Cord & Case) 20 lbs. (10 1
¤2lbs. - VFD only)
Ambient Temperature 14°F to 120°F (-10°C to 50°C)
Elevation Up to 3,300 ft. without derating
Ambient Temperature -4°F to 140°F (-20°C to 60°C)
Relative Humidity 95%, Non-condensing
Case High density polyethylene
Trim Aluminum
Lock Military twist type, steel with zinc plating
Redi-Flo2®
For Generators with Voltage Regulation 2500 Watts at 115/230 VAC, single phase
For Generators without Voltage Regulation 5000 Watts at 115/230 VAC, single phase
Recommended For Optimal Performance 4000 Watts at 115/230 VAC, single phase
with voltage regulation.
Redi-Flo4™
For Generators with Voltage Regulation 3400 Watts at 115/230 VAC, single phase
For Generators without Voltage Regulation 6700 Watts at 115/230 VAC, single phase
Recommended For Optimal Performance 5400 Watts at 115/230 VAC, single phase
with voltage regulation.
Note: RF2 = Redi-Flo2® RF4 = Redi-Flo4™
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Page 3 Page 4
ELECTRIC ELECTRIC
PIPING CONNECTION
PIPING CONNECTION
OPERATING CONDITIONS
Redi-Flo4
Variable Performance Pump & Motor
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
Discharge Port 5E8 -- 1" Female NPT
10E5 -- 1 1
¤4" Female NPT
16E4 -- 1 1
¤4" Female NPT
25E3 -- 1 1
¤2" Female NPT
Minimum Ambient Fluid Temperature 34°F (1°C)
Maximum Ambient Fluid Temperature 104°F (40°C)
Motor Fluid Deionized (DI) water with 30% propylene
glycol
Minimum Ambient Temperature -4°F (-20°C)
Maximum Ambient Temperature 120°F (50°C)
5E8 26 3
¤16" (length) 37 lbs.
10E5 23 3
¤4" (length) 35 lbs.
16E4 22 7
¤8" (length) 34 lbs.
25E3 22" (length) 34 lbs.
Maximum Diameter 3 31
¤32"
Standard Lengths in Feet (25 ft. increments) 25' to 600' All models
OPERATING CONDITIONS
STORAGE CONDITIONS
DIMENSIONS AND WEIGHT (PUMP AND MOTOR)
LEAD LENGTHS*
TECHNICAL SPECIFICATIONS TECHNICAL SPECIFICATIONS
DIMENSIONS AND WEIGHT (PUMP AND MOTOR)
LEAD LENGTHS
Redi-Flo2®Pump & Motor
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)
Discharge Port 1
¤2" Female NPT
Minimum Ambient Fluid Temperature 34°F (1°C)
Maximum Ambient Fluid Temperature 80°F (28°C)
Motor Lubricating Fluid Deionized (DI) Water
Minimum Ambient Temperature 34°F (1°C)
Maximum Ambient Temperature 120°F (50°C)
Dimensions 11.3" length x 1.81" diameter
Net Weight 5.5 lbs., excluding motor lead
Standard Lengths in Feet 30, 50, 75, 100, 125, 150, 175, 200,
250, 300
Custom Lengths Available in 1 ft. increments from
30 to 300 ft.
STORAGE CONDITIONS
MOTOR FLUID
*With Redi-Flo4™ Variable Performance Pumps, you must have an adapter cord to connect
to Redi-Flo VFD. See page 29, Parts, and Accessory List, Redi-Flo VFD x RF4 Variable
Performance Pump section.
STORAGE CONDITIONS
TR'sVFDIO.p65 5/31/00, 9:02 AM3

Page 3 Page 4
ELECTRIC ELECTRIC
PIPING CONNECTION
PIPING CONNECTION
OPERATING CONDITIONS
Redi-Flo4
Variable Performance Pump & Motor
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
Discharge Port 5E8 -- 1" Female NPT
10E5 -- 1 1
¤4" Female NPT
16E4 -- 1 1
¤4" Female NPT
25E3 -- 1 1
¤2" Female NPT
Minimum Ambient Fluid Temperature 34°F (1°C)
Maximum Ambient Fluid Temperature 104°F (40°C)
Motor Fluid Deionized (DI) water with 30% propylene
glycol
Minimum Ambient Temperature -4°F (-20°C)
Maximum Ambient Temperature 120°F (50°C)
5E8 26 3
¤16" (length) 37 lbs.
10E5 23 3
¤4" (length) 35 lbs.
16E4 22 7
¤8" (length) 34 lbs.
25E3 22" (length) 34 lbs.
Maximum Diameter 3 31
¤32"
Standard Lengths in Feet (25 ft. increments) 25' to 600' All models
OPERATING CONDITIONS
STORAGE CONDITIONS
DIMENSIONS AND WEIGHT (PUMP AND MOTOR)
LEAD LENGTHS*
TECHNICAL SPECIFICATIONS TECHNICAL SPECIFICATIONS
DIMENSIONS AND WEIGHT (PUMP AND MOTOR)
LEAD LENGTHS
Redi-Flo2®Pump & Motor
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)
Discharge Port 1
¤2" Female NPT
Minimum Ambient Fluid Temperature 34°F (1°C)
Maximum Ambient Fluid Temperature 80°F (28°C)
Motor Lubricating Fluid Deionized (DI) Water
Minimum Ambient Temperature 34°F (1°C)
Maximum Ambient Temperature 120°F (50°C)
Dimensions 11.3" length x 1.81" diameter
Net Weight 5.5 lbs., excluding motor lead
Standard Lengths in Feet 30, 50, 75, 100, 125, 150, 175, 200,
250, 300
Custom Lengths Available in 1 ft. increments from
30 to 300 ft.
STORAGE CONDITIONS
MOTOR FLUID
*With Redi-Flo4™ Variable Performance Pumps, you must have an adapter cord to connect
to Redi-Flo VFD. See page 29, Parts, and Accessory List, Redi-Flo VFD x RF4 Variable
Performance Pump section.
STORAGE CONDITIONS
TR'sVFDIO.p65 5/31/00, 9:02 AM3 Downloaded from www.Manualslib.com manuals search engine

Redi-FloVariableFrequencyDrive
For more detailed information on the following features, see Operator Adjustments and
Redi-Flo VFD Inputs & Outputs on page 11-12 and 15-16).
Dual Input Capability
Redi-Flo VFD can accept 115V or 230V input voltage available in one unit
Enclosure
The Redi-Flo VFD NEMA 1 enclosure is designed to provide a degree of protection against
personnel contact with the internal electrical components. Care must be used to prohibit
moisture from coming into contact with the unit.
UL Approvals
The Redi-Flo VFD is UL Listed to U.S. and Canadian electrical safety standards.
10-Turn Potentiometer
The Redi-Flo VFD is equipped with a "10-Turn Pot" for finer adjustment of motor speed and
pump performance.
Dual Functionality
The Redi-Flo VFD can change from operating Redi-Flo2®(MP1) to Redi-Flo4™ Variable
Performance pumps with a turn of a dial.
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)
TheRedi-FloVFDcanprotectpumpingequipmentfromdamageasaresultof"dryrun"/"pump
off" conditions at frequencies above 50 HZ for Redi-Flo4™ and above 300 HZ for Redi-Flo2®.
This feature can be further configured for automatic restart of the Redi-Flo VFD after a time
period adjustable from 1 to 99 minutes.
Output Frequency Limited by Input Current
The output frequency is clamped when the input current reaches 16.0 amps, regardless of
input voltage. The clamped output frequency prevents overload of 20 amp circuit breaker and
portable 115V generator sets.
Torque Boost
The Redi-Flo VFD is equipped with an adjustable torque boost (voltage boost) feature to aid
in start-up under severe conditions.
Optimized Volts/Frequency (V/HZ) Pattern
The Redi-Flo VFD V/fpattern is specially optimized to allow the most efficient operation of
Redi-Flo2®and Redi-Flo4™ variable performance pumps.
Page 5
REDI-FLO VFD SPECIAL FEATURES
REDI-FLO VFD SPECIAL FEATURES
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
TheRedi-FloVFD isequippedwith anisolated 24VDC-100mA powersupplyfor useas a loop
power source for an external 4-20mA transducer (transmitter) or flowmeter.
On/Off Control Terminals
The Redi-Flo VFD provides easy connection of liquid level controls for on/off operation.
Auxiliary Contacts
1. Redi-Flo VFD run acknowledge: contact closed when Redi-FloVFD is powered and
ready for operation (i.e., RSR switch in run position).
2. Redi-Flo VFD fault annunciation: "Form C" contacts closes upon fault. Annunciated
faults are over temperature ( ), under voltage( ), over voltage( ), motor
overload ( ), VFD overload ( ), ground fault ( ), over current ( ), and under
current ( ), under current 1 ( ) under current restart ( ).
3. Speed reached acknowledge: contact closed when Redi-Flo VFD has reached the
speed/frequency set on the10-turn potentiometer. Typically used to enable
external timers or counters.
NOTE: All contacts rated 2A at 250 VAC/30 VDC.
Frequency/Fault/Status Display
The Redi-Flo VFD has an easy to read, 3/4" high–7segment LED, frequency display and
fault annunciation. A four (4) place digital frequency display (XXX.X) and fault code
annunciation ensure precise adjustment and easy diagnostics. See Troubleshooting
section, pages 17-18.
Figure 3
Components of Your Redi-Flo VFD System
Your Redi-Flo Variable Performance Pump system should contain the following
components:
1. Redi-Flo Variable Frequency Drive, SI/MP1-115/230V (See Figure 1)
2. Either a Redi-Flo2® pump and motor with lead
(Figure 2) or a Redi-Flo4™ Variable Performance
pump, motor, lead,lead/plug and RF4 x VFD
adapter cord (Figure 3).
PRE-INSTALLATION CHECKLIST
The pump
will be
stored
here
Figure 2
Figure 1
Page 6
TR'sVFDIO.p65 5/31/00, 9:02 AM4

Redi-FloVariableFrequencyDrive
For more detailed information on the following features, see Operator Adjustments and
Redi-Flo VFD Inputs & Outputs on page 11-12 and 15-16).
Dual Input Capability
Redi-Flo VFD can accept 115V or 230V input voltage available in one unit
Enclosure
The Redi-Flo VFD NEMA 1 enclosure is designed to provide a degree of protection against
personnel contact with the internal electrical components. Care must be used to prohibit
moisture from coming into contact with the unit.
UL Approvals
The Redi-Flo VFD is UL Listed to U.S. and Canadian electrical safety standards.
10-Turn Potentiometer
The Redi-Flo VFD is equipped with a "10-Turn Pot" for finer adjustment of motor speed and
pump performance.
Dual Functionality
The Redi-Flo VFD can change from operating Redi-Flo2®(MP1) to Redi-Flo4™ Variable
Performance pumps with a turn of a dial.
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)
TheRedi-Flo VFDcanprotectpumpingequipmentfromdamageasaresultof"dryrun"/"pump
off" conditions at frequencies above 50 HZ for Redi-Flo4™ and above 300 HZ for Redi-Flo2®.
This feature can be further configured for automatic restart of the Redi-Flo VFD after a time
period adjustable from 1 to 99 minutes.
Output Frequency Limited by Input Current
The output frequency is clamped when the input current reaches 16.0 amps, regardless of
input voltage. The clamped output frequency prevents overload of 20 amp circuit breaker and
portable 115V generator sets.
Torque Boost
The Redi-Flo VFD is equipped with an adjustable torque boost (voltage boost) feature to aid
in start-up under severe conditions.
Optimized Volts/Frequency (V/HZ) Pattern
The Redi-Flo VFD V/fpattern is specially optimized to allow the most efficient operation of
Redi-Flo2®and Redi-Flo4™ variable performance pumps.
Page 5
REDI-FLO VFD SPECIAL FEATURES
REDI-FLO VFD SPECIAL FEATURES
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
TheRedi-FloVFD is equippedwith an isolated24VDC-100 mApowersupply foruseas aloop
power source for an external 4-20mA transducer (transmitter) or flowmeter.
On/Off Control Terminals
The Redi-Flo VFD provides easy connection of liquid level controls for on/off operation.
Auxiliary Contacts
1. Redi-Flo VFD run acknowledge: contact closed when Redi-FloVFD is powered and
ready for operation (i.e., RSR switch in run position).
2. Redi-Flo VFD fault annunciation: "Form C" contacts closes upon fault. Annunciated
faults are over temperature ( ), under voltage( ), over voltage( ), motor
overload ( ), VFD overload ( ), ground fault ( ), over current ( ), and under
current ( ), under current 1 ( ) under current restart ( ).
3. Speed reached acknowledge: contact closed when Redi-Flo VFD has reached the
speed/frequency set on the10-turn potentiometer. Typically used to enable
external timers or counters.
NOTE: All contacts rated 2A at 250 VAC/30 VDC.
Frequency/Fault/Status Display
The Redi-Flo VFD has an easy to read, 3/4" high–7segment LED, frequency display and
fault annunciation. A four (4) place digital frequency display (XXX.X) and fault code
annunciation ensure precise adjustment and easy diagnostics. See Troubleshooting
section, pages 17-18.
Figure 3
Components of Your Redi-Flo VFD System
Your Redi-Flo Variable Performance Pump system should contain the following
components:
1. Redi-Flo Variable Frequency Drive, SI/MP1-115/230V (See Figure 1)
2. Either a Redi-Flo2® pump and motor with lead
(Figure 2) or a Redi-Flo4™ Variable Performance
pump, motor, lead,lead/plug and RF4 x VFD
adapter cord (Figure 3).
PRE-INSTALLATION CHECKLIST
The pump
will be
stored
here
Figure 2
Figure 1
Page 6
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Page 7 Page 8
PRE-INSTALLATION CHECKLIST ASSEMBLING THE REDI-FLO VFD SYSTEM
SAFETY WARNING
Allelectricalworkshould beperformed bya qualifiedelectrician in
accordance with the latest edition of the National Electrical Code,
local codes and regulations.
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).
3. Safety cable and hardware for lowering and lifting the pump (See Figure 6).
Figure 6
The exact type of plug used will depend
upon your generator, The Redi-Flo VFD
issuppliedwithastandard NEMA,115V,
3 prong plug.
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. Make sure that you have the correct pump for the installation. If you purchased a
Redi-Flo4™ pump in component form, see instructions on pages 25-26, and refer to the Redi-
Flo4™ Installation guide for assembly instructions.
Attaching the Pump to the Pipe
When connecting piping to the pump, a back-up wrench should be used. Redi-Flo4™ pumps
should only be gripped by the flats near the top of the discharge chamber. Under no
circumstances grip the body of the pump, cable guard or motor. When tightened down, the
threaded end of the first section of riser pipe or nipple must not come in contact with the check
valve retainer in the discharge chamber of the pump. After the first section of pipe has been
attached to the pump, the safety cable should be connected to the pump(as shown if figure
6). Do not clamp to the pump. When raising the pump, be careful not to place bending stress
on the pump by picking it up by the pump end only. A safety cable should be attached to the
pump (using special brackets and cables, sold separately) anytime plastic pipe or flexible
tubing is used. A check valve may also be added to Redi-Flo2® pumps to prevent fluid from
flowing back into the pump after it is turned off (backflow prevention). A check valve is
standard on Redi-Flo4™ pumps. Always check to ensure joints are fastened securely. The
use of a torque arrestor is not required when using the Redi-Flo VFD.
Attaching Redi-Flo lead to well plug
pigtail
The Redi-Flo4 is supplied with a special well plug and submersible lead splice kit.
Figure 5
Figure 4
Redi-Flo2®Redi-Flo4™
TR'sVFDIO.p65 5/31/00, 9:02 AM5

Page 7 Page 8
PRE-INSTALLATION CHECKLIST ASSEMBLING THE REDI-FLO VFD SYSTEM
SAFETY WARNING
Allelectrical workshould beperformed byaqualified electricianin
accordance with the latest edition of the National Electrical Code,
local codes and regulations.
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).
3. Safety cable and hardware for lowering and lifting the pump (See Figure 6).
Figure 6
The exact type of plug used will depend
upon your generator, The Redi-Flo VFD
issuppliedwithastandard NEMA,115V,
3 prong plug.
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. Make sure that you have the correct pump for the installation. If you purchased a
Redi-Flo4™ pump in component form, see instructions on pages 25-26, and refer to the Redi-
Flo4™ Installation guide for assembly instructions.
Attaching the Pump to the Pipe
When connecting piping to the pump, a back-up wrench should be used. Redi-Flo4™ pumps
should only be gripped by the flats near the top of the discharge chamber. Under no
circumstances grip the body of the pump, cable guard or motor. When tightened down, the
threaded end of the first section of riser pipe or nipple must not come in contact with the check
valve retainer in the discharge chamber of the pump. After the first section of pipe has been
attached to the pump, the safety cable should be connected to the pump(as shown if figure
6). Do not clamp to the pump. When raising the pump, be careful not to place bending stress
on the pump by picking it up by the pump end only. A safety cable should be attached to the
pump (using special brackets and cables, sold separately) anytime plastic pipe or flexible
tubing is used. A check valve may also be added to Redi-Flo2® pumps to prevent fluid from
flowing back into the pump after it is turned off (backflow prevention). A check valve is
standard on Redi-Flo4™ pumps. Always check to ensure joints are fastened securely. The
use of a torque arrestor is not required when using the Redi-Flo VFD.
Attaching Redi-Flo lead to well plug
pigtail
The Redi-Flo4 is supplied with a special well plug and submersible lead splice kit.
Figure 5
Figure 4
Redi-Flo2®Redi-Flo4™
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Page 9 Page 10
Lowering the Pump Into the Well
Make sure the electrical motor leads are not cut or damaged in any way when the pump is
being lowered into the well. Do not use the motor leads to support the weight of the pump.
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. Teflon® wire ties are recommended for
environmental applications. IMPORTANT
Plastic pipe and tubing tend to stretch under load. This stretching must be taken into account
when securing the motor lead to the riser pipe or tubing. Leave three to four inches of slack
between clipped points. This tendency to stretch will also affect the calculation of the pump
setting depth. When plastic pipe or tubing is used, it is recommended that a safety cable be
attached to the pump to raise and lower it. Redi-Flo4™ pumps are designed to accommodate
this cable and Redi-Flo2® pumps can be fitted with a safety cable bracket
(part number 1A0019).
Operating Conditions
To ensure the Redi-Flo Variable Performance Pumping system operates properly, follow
these guidelines:
• The Redi-Flo2® or Redi-Flo4™ pump must be installed vertically with the discharge
end pointed upwards.
• The electrical voltage supply to the Redi-Flo VFD must always be within + or - 10%
of the specified power supply ( 103.5 - 126.5 VAC at 115V settings or 207 - 253 VAC
at 230V ).
• For best performance when operating on a generator, 115V generators should be set
at 120V without load and 230V generators should be set at 240V without load. Use a
separate meters to set voltage; do not rely on built-in meters on generators.
• The pump and motor must always be completely submerged in fluid to ensure
lubrication and cooling of the motor.
• The temperature of the fluid being pumped should be according to the technical
specifications (Pages 3-4).
• The installation depth of the pump should always be at least three feet below the
maximum drawdown level of the well.
• Redi-Flo pumps are not recommended for well development or pumping fluid
containing abrasives.
• Redi-Flo2® pumps are not recommended for continuous operation applications.
• The warranty of the Redi-Flo pumps will be void if other than the Redi-Flo, is
used or if corrosive fluids are pumped.
• The service life of dedicated Redi-Flo pumps may be compromised if the ambient
water quality exceeds one or more of the following values:
pH<5 DO>2 ppm H
2
S>1 ppm CL->500 ppm TDS>1000 ppm
Teflon® is a registered trademark of DuPont
INSTALLATION AND OPERATION FOR THE
REDI-FLO VFD SYSTEM ASSEMBLING THE REDI-FLO VFD SYSTEM
Starting
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.
3. If the generator has a circuit breaker,
close the breaker and check the output
voltage from the generator. The output
voltage must be within the specified
ranges (refer to Technical Specifications,
page 2) to ensure proper operation and
prevent damage to the system. If the
voltage is too high or too low, adjustments
to the generator must be performed to
allow the system to run.
4. Plug the Redi-Flo VFD into the generator or
connect to power supply in accordance to the
National Electric Code, and/or local ordinance.
5. Select RF4M (Redi-Flo4™ manual operation) or RF2M (Redi-Flo2® manual operation)
with the Mode selection knob, depending on the pump to be operated.
6. Connect the motor lead to the Redi-Flo VFD. (Note: With RF4 Variable Performance
Pumps you must have an adapter cord to connect to Redi-Flo VFD). See page 29,
Parts List, Redi-Flo VFD x RF4 Variable Performance Pump Accessories section.
7. Check the frequency display on the Redi-Flo VFD. It should read "0.0" (zero).
If it doesn't, refer to the Troubleshooting section on page 17-18.
8. If this is the first time the Redi-Flo VFD is being used or it has not been used for more
than six months, leave the Redi-Flo VFD on for at least 5 minutes before proceeding
to the next step.
9. Set the Redi-Flo VFD speed dial to the desired performance. If unknown,
it is recommended to turn the speed dial completely counter clockwise to lowest
speed setting and then adjust up after starting.
10. Start the pump by switching the Redi-Flo VFD run/stop/reset (RSR) switch to run.
11. Adjust the pump performance to the desired level by turning the speed dial (10-turn
potentiometer) until the desired performance is attained.
Stopping
To stop the pump, switch the RSR switch to stop. It is not necessary to reduce the speed of
the motor before switching the RSR switch to stop. You should unplug the Redi-Flo VFD from
the generator BEFORE removing the motor lead from the Redi-Flo VFD or turning off the
generator.
Figure 7 SI/MP1
Front
Panel
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Page 9 Page 10
Lowering the Pump Into the Well
Make sure the electrical motor leads are not cut or damaged in any way when the pump is
being lowered into the well. Do not use the motor leads to support the weight of the pump.
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. Teflon® wire ties are recommended for
environmental applications. IMPORTANT
Plastic pipe and tubing tend to stretch under load. This stretching must be taken into account
when securing the motor lead to the riser pipe or tubing. Leave three to four inches of slack
between clipped points. This tendency to stretch will also affect the calculation of the pump
setting depth. When plastic pipe or tubing is used, it is recommended that a safety cable be
attached to the pump to raise and lower it. Redi-Flo4™ pumps are designed to accommodate
this cable and Redi-Flo2® pumps can be fitted with a safety cable bracket
(part number 1A0019).
Operating Conditions
To ensure the Redi-Flo Variable Performance Pumping system operates properly, follow
these guidelines:
• The Redi-Flo2® or Redi-Flo4™ pump must be installed vertically with the discharge
end pointed upwards.
• The electrical voltage supply to the Redi-Flo VFD must always be within + or - 10%
of the specified power supply ( 103.5 - 126.5 VAC at 115V settings or 207 - 253 VAC
at 230V ).
• For best performance when operating on a generator, 115V generators should be set
at 120V without load and 230V generators should be set at 240V without load. Use a
separate meters to set voltage; do not rely on built-in meters on generators.
• The pump and motor must always be completely submerged in fluid to ensure
lubrication and cooling of the motor.
• The temperature of the fluid being pumped should be according to the technical
specifications (Pages 3-4).
• The installation depth of the pump should always be at least three feet below the
maximum drawdown level of the well.
• Redi-Flo pumps are not recommended for well development or pumping fluid
containing abrasives.
• Redi-Flo2® pumps are not recommended for continuous operation applications.
• The warranty of the Redi-Flo pumps will be void if other than the Redi-Flo, is
used or if corrosive fluids are pumped.
• The service life of dedicated Redi-Flo pumps may be compromised if the ambient
water quality exceeds one or more of the following values:
pH<5 DO>2 ppm H
2
S>1 ppm CL->500 ppm TDS>1000 ppm
Teflon® is a registered trademark of DuPont
INSTALLATION AND OPERATION FOR THE
REDI-FLO VFD SYSTEM ASSEMBLING THE REDI-FLO VFD SYSTEM
Starting
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.
3. If the generator has a circuit breaker,
close the breaker and check the output
voltage from the generator. The output
voltage must be within the specified
ranges (refer to Technical Specifications,
page 2) to ensure proper operation and
prevent damage to the system. If the
voltage is too high or too low, adjustments
to the generator must be performed to
allow the system to run.
4. Plug the Redi-Flo VFD into the generator or
connect to power supply in accordance to the
National Electric Code, and/or local ordinance.
5. Select RF4M (Redi-Flo4™ manual operation) or RF2M (Redi-Flo2® manual operation)
with the Mode selection knob, depending on the pump to be operated.
6. Connect the motor lead to the Redi-Flo VFD. (Note: With RF4 Variable Performance
Pumps you must have an adapter cord to connect to Redi-Flo VFD). See page 29,
Parts List, Redi-Flo VFD x RF4 Variable Performance Pump Accessories section.
7. Check the frequency display on the Redi-Flo VFD. It should read "0.0" (zero).
If it doesn't, refer to the Troubleshooting section on page 17-18.
8. If this is the first time the Redi-Flo VFD is being used or it has not been used for more
than six months, leave the Redi-Flo VFD on for at least 5 minutes before proceeding
to the next step.
9. Set the Redi-Flo VFD speed dial to the desired performance. If unknown,
it is recommended to turn the speed dial completely counter clockwise to lowest
speed setting and then adjust up after starting.
10. Start the pump by switching the Redi-Flo VFD run/stop/reset (RSR) switch to run.
11. Adjust the pump performance to the desired level by turning the speed dial (10-turn
potentiometer) until the desired performance is attained.
Stopping
To stop the pump, switch the RSR switch to stop. It is not necessary to reduce the speed of
the motor before switching the RSR switch to stop. You should unplug the Redi-Flo VFD from
the generator BEFORE removing the motor lead from the Redi-Flo VFD or turning off the
generator.
Figure 7 SI/MP1
Front
Panel
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Page 11 Page 12
ASSEMBLING THE REDI-FLO VFD SYSTEM SI/MP1 REDI-FLO VFD OPERATOR ADJUSTMENTS
REDI-FLO VFD OPERATOR ADJUSTMENTS
Operator Adjustable Control Features for Custom Operation
(See flowchart on page 14 for steps required to adjust parameters. Parameter list
shows function no., description, range, and factory preset default settings)
F00-RF2 MAXIMUM FREQUENCY (FMAX): Factory preset at 400HZ for Redi-Flo2®
pumps. Maximum frequency is adjustable from 400-100HZ. To adjust maximum
frequency follow the steps on the flowchart on page 14.
F01-RF2 MINIMUM FREQUENCY (FMIN): Factory preset at 25HZ for the Redi-Flo2®
pumps. Minimum frequency is adjustable from 0-100HZ. To adjust minimum frequency
follow the steps on the flowchart on page 14.
F02-RF4 MAXIMUM FREQUENCY (FMAX): Factory preset at 100HZ for Redi-Flo4™
variable performance pumps. Maximum frequency is adjustable from 0.0-100HZ. To
adjust maximum frequency follow the steps on the flowchart on page 14.
F03-RF4 MINIMUM FREQUENCY (FMIN): Factory preset at 25HZ for Redi-Flo4™
variable performance pumps. Minimum frequency is adjustable from 0-30HZ. To adjust
minimum frequency follow the steps on the flowchart on page 14.
F04-ACCELERATION TIME (ACCEL): Factory preset at 5 seconds. Acceleration time is
adjustable from 0.5-10 seconds. To adjust acceleration time follow the steps on the
flowchart on page 14.
F05-DEACCELERATION TIME (DECEL): Factory preset at 5 seconds. Deacceleration
time is adjustable from 0.5-10 seconds. To adjust deacceleration time follow the steps on
the flowchart on page 14.
F06-TORQUE BOOST(BOOST): Torque Boost is used to increase startup torque at low
speeds. Factory preset at zero. Torque Boost is adjustable from 0-30%. To adjust follow
the steps on the flowchart on 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™ pumps. The motor overload is adjustable from 50-110%. To adjust motor
overload trip current, follow the steps on the flowchart on page 14.
F09-UNDERCURRENT(UC ENABLE): Factory preset at (0) disabled. Input under current
detection level is adjustable either to (0) disabled or (1) enabled. To adjust UC level, follow
the steps on the flowchart on page 14.
F10-INPUT UNDERCURRENT LEVEL(UC LEVEL): Factory preset at 30%. Input
undercurrent detection level is adjustable from 10-60%. The input undercurrent trip level is
adjustable from 1.6-9.6A. To adjust detection level, first enable (F09) then adjust level
(F10) by following the steps on the flowchart on page 14.
**The Redi-Flo VFD can protect pumping equipment from damage as a result of “dry
running” at frequencies above 50Hz for the Redi-Flo4™ or above 300Hz for the Redi-
Flo2®.
F11-INPUT UNDERCURRENT RESTART TIME(UC TIME): Factory preset at 1 minute.
Input undercurrent restart time is adjustable from 1-99 minutes. The Redi-Flo VFD can be
set to restart automatically after it has cut out on input under current trip (UC). After a set
period of time (1-99 minutes) the Redi-Flo VFD can be set up to restart automatically or it
can be set not to restart until manually reset. If (F11) is set at zero then there is no
automatic restart. To adjust restart time follow the steps on the flowchart on page 14.
F12-SWITCHING FREQUENCY(MODULATION): Factory preset at 1(7.8 kHz). Switching
frequency is adjustable from 0 (15.6 kHz), 1 (7.8 kHz) or 2 (3.9 kHz). To adjust switching
frequency follow the steps on the flowchart on page 14.
F13-INPUT CURRENT ENABLE: Factory preset at 0 (disabled). Input current is
adjustable from 0 (disabled, 23 A) or 1 (enabled, 16A). To adjust, input current follow the
steps on the flowchart on page 14.
F14-AUTO REFERENCE SIGNAL: Factory preset at 0 (disabled). Auto Reference Signal
is adjustable from 0 or 1 enabled. To adjust Auto Reference Signal follow the steps on
page 14.
F15-NO MOTOR LOAD(UC1): Factory preset at 1 (enabled). No motor load is adjustable
from 0 (disabled) or 1 (enabled). To adjust No Motor Load follow steps on Page 14.
Purging A Well
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.
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Page 11 Page 12
ASSEMBLING THE REDI-FLO VFD SYSTEM SI/MP1 REDI-FLO VFD OPERATOR ADJUSTMENTS
REDI-FLO VFD OPERATOR ADJUSTMENTS
Operator Adjustable Control Features for Custom Operation
(See flowchart on page 14 for steps required to adjust parameters. Parameter list
shows function no., description, range, and factory preset default settings)
F00-RF2 MAXIMUM FREQUENCY (FMAX): Factory preset at 400HZ for Redi-Flo2®
pumps. Maximum frequency is adjustable from 400-100HZ. To adjust maximum
frequency follow the steps on the flowchart on page 14.
F01-RF2 MINIMUM FREQUENCY (FMIN): Factory preset at 25HZ for the Redi-Flo2®
pumps. Minimum frequency is adjustable from 0-100HZ. To adjust minimum frequency
follow the steps on the flowchart on page 14.
F02-RF4 MAXIMUM FREQUENCY (FMAX): Factory preset at 100HZ for Redi-Flo4™
variable performance pumps. Maximum frequency is adjustable from 0.0-100HZ. To
adjust maximum frequency follow the steps on the flowchart on page 14.
F03-RF4 MINIMUM FREQUENCY (FMIN): Factory preset at 25HZ for Redi-Flo4™
variable performance pumps. Minimum frequency is adjustable from 0-30HZ. To adjust
minimum frequency follow the steps on the flowchart on page 14.
F04-ACCELERATION TIME (ACCEL): Factory preset at 5 seconds. Acceleration time is
adjustable from 0.5-10 seconds. To adjust acceleration time follow the steps on the
flowchart on page 14.
F05-DEACCELERATION TIME (DECEL): Factory preset at 5 seconds. Deacceleration
time is adjustable from 0.5-10 seconds. To adjust deacceleration time follow the steps on
the flowchart on page 14.
F06-TORQUE BOOST(BOOST): Torque Boost is used to increase startup torque at low
speeds. Factory preset at zero. Torque Boost is adjustable from 0-30%. To adjust follow
the steps on the flowchart on 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™ pumps. The motor overload is adjustable from 50-110%. To adjust motor
overload trip current, follow the steps on the flowchart on page 14.
F09-UNDERCURRENT(UC ENABLE): Factory preset at (0) disabled. Input under current
detection level is adjustable either to (0) disabled or (1) enabled. To adjust UC level, follow
the steps on the flowchart on page 14.
F10-INPUT UNDERCURRENT LEVEL(UC LEVEL): Factory preset at 30%. Input
undercurrent detection level is adjustable from 10-60%. The input undercurrent trip level is
adjustable from 1.6-9.6A. To adjust detection level, first enable (F09) then adjust level
(F10) by following the steps on the flowchart on page 14.
**The Redi-Flo VFD can protect pumping equipment from damage as a result of “dry
running” at frequencies above 50Hz for the Redi-Flo4™ or above 300Hz for the Redi-
Flo2®.
F11-INPUT UNDERCURRENT RESTART TIME(UC TIME): Factory preset at 1 minute.
Input undercurrent restart time is adjustable from 1-99 minutes. The Redi-Flo VFD can be
set to restart automatically after it has cut out on input under current trip (UC). After a set
period of time (1-99 minutes) the Redi-Flo VFD can be set up to restart automatically or it
can be set not to restart until manually reset. If (F11) is set at zero then there is no
automatic restart. To adjust restart time follow the steps on the flowchart on page 14.
F12-SWITCHING FREQUENCY(MODULATION): Factory preset at 1(7.8 kHz). Switching
frequency is adjustable from 0 (15.6 kHz), 1 (7.8 kHz) or 2 (3.9 kHz). To adjust switching
frequency follow the steps on the flowchart on page 14.
F13-INPUT CURRENT ENABLE: Factory preset at 0 (disabled). Input current is
adjustable from 0 (disabled, 23 A) or 1 (enabled, 16A). To adjust, input current follow the
steps on the flowchart on page 14.
F14-AUTO REFERENCE SIGNAL: Factory preset at 0 (disabled). Auto Reference Signal
is adjustable from 0 or 1 enabled. To adjust Auto Reference Signal follow the steps on
page 14.
F15-NO MOTOR LOAD(UC1): Factory preset at 1 (enabled). No motor load is adjustable
from 0 (disabled) or 1 (enabled). To adjust No Motor Load follow steps on Page 14.
Purging A Well
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.
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PARAMETER LIST FOR REDI-FLO VFD
OPERATOR ADJUSTMENTS OPERATOR ADJUSTABLE CONTROL FEATURES
Use flowchart below to change operator adjustable control features.
Page 13 Page 14
To Adjust Operator Adjustable Control Features, follow the following
instructions: (See Figure 8)
1. Disconnect Redi-Flo VFD from the power supply.
2. Remove front cover of VFD by losen the two phillips head screws.
3. Lift and set aside the cover to expose the mode keys in the center of the drive.
Use caution to avoid damage to the ribbon cable attaching the front cover to the
interior of the drive.
4. Setting aside the front cover place in a position so the LED display is visible.
5. Connect drive to the power supply.
6. Use the following flow chart to adjust operator adjustable control features.
Figure 8
CAUTION
The internals of the Redi-Flo VFD contain
High Voltages! Extreme caution should be
exercised when making adjustments.
Phillips screws
Note: Shaded functions can be changed during operation.
NO. DESCRIPTION RANGE UNITS DEFAULT
F00 RF2 Max. Output Frequency 100.0-400.0 Hz 1.0 Hz 400.0 Hz
F01 RF2 Min. Output Frequency 0.0-100.0 Hz 1.0 Hz 25.0 Hz
F02 RF4 Max. Output Frequency 30.0-100.0 Hz 1.0 Hz 100.0 Hz
F03 RF4 Min. Output Frequency 0.0-30.0 Hz 1.0 Hz 25.0 Hz
F04 Acceleration Time (to 100/400 Hz) 0.5-10.0 Sec. 0.5 Sec. 5.0 Sec.
F05 Deceleration Time (from 100/400 Hz) 0.5-10.0 Sec. 0.5 Sec. 5.0 Sec.
F06 Torque Boost (in % max.) 0-30% 1% 0%
F07 Base Frequency Select 50 or 60 Hz Hz 60 Hz
F08 Motor Overload Level Im depends uponRF2/RF4 50-110% Im %Im 110%
F09 Input Undercurrent Detection Disable 0
0=
Di
sa
bl
e
d
0-1
(Di
sa
bl
e
d)
1= Enabled
F10 Input Undercurrent Detection Level 10-60%(1.6-9.6A) %Im 30%
F11 Input Undercurrent Restart Time 1-99 mins. 1 min. 1 min.
F12 Switching Frequency 0-2 - 1 (7.8kHz)
0= 15.6 kHz
1= 7.8 kHz
2= 3.9 kHz
F13 Input Current Enabled 0-1 - 0
0= Disabled (23A) (Disabled)
1= Enabled (16A) 23A
F14 Auto Reference Signal 0-1 - 0
0= Disabled (Disabled)
1= Enabled
F15 No Motor Load 0-1 - 1
0= Disabled (Enabled)
1= Enabled
TR'sVFDIO.p65 5/31/00, 9:02 AM8

PARAMETER LIST FOR REDI-FLO VFD
OPERATOR ADJUSTMENTS OPERATOR ADJUSTABLE CONTROL FEATURES
Use flowchart below to change operator adjustable control features.
Page 13 Page 14
To Adjust Operator Adjustable Control Features, follow the following
instructions: (See Figure 8)
1. Disconnect Redi-Flo VFD from the power supply.
2. Remove front cover of VFD by losen the two phillips head screws.
3. Lift and set aside the cover to expose the mode keys in the center of the drive.
Use caution to avoid damage to the ribbon cable attaching the front cover to the
interior of the drive.
4. Setting aside the front cover place in a position so the LED display is visible.
5. Connect drive to the power supply.
6. Use the following flow chart to adjust operator adjustable control features.
Figure 8
CAUTION
The internals of the Redi-Flo VFD contain
High Voltages! Extreme caution should be
exercised when making adjustments.
Phillips screws
Note: Shaded functions can be changed during operation.
NO. DESCRIPTION RANGE UNITS DEFAULT
F00 RF2 Max. Output Frequency 100.0-400.0 Hz 1.0 Hz 400.0 Hz
F01 RF2 Min. Output Frequency 0.0-100.0 Hz 1.0 Hz 25.0 Hz
F02 RF4 Max. Output Frequency 30.0-100.0 Hz 1.0 Hz 100.0 Hz
F03 RF4 Min. Output Frequency 0.0-30.0 Hz 1.0 Hz 25.0 Hz
F04 Acceleration Time (to 100/400 Hz) 0.5-10.0 Sec. 0.5 Sec. 5.0 Sec.
F05 Deceleration Time (from 100/400 Hz) 0.5-10.0 Sec. 0.5 Sec. 5.0 Sec.
F06 Torque Boost (in % max.) 0-30% 1% 0%
F07 Base Frequency Select 50 or 60 Hz Hz 60 Hz
F08 Motor Overload Level Im depends uponRF2/RF4 50-110% Im %Im 110%
F09 Input Undercurrent Detection Disable 0
0=
Di
sa
bl
e
d
0-1
(Di
sa
bl
e
d)
1= Enabled
F10 Input Undercurrent Detection Level 10-60%(1.6-9.6A) %Im 30%
F11 Input Undercurrent Restart Time 1-99 mins. 1 min. 1 min.
F12 Switching Frequency 0-2 - 1 (7.8kHz)
0= 15.6 kHz
1= 7.8 kHz
2= 3.9 kHz
F13 Input Current Enabled 0-1 - 0
0= Disabled (23A) (Disabled)
1= Enabled (16A) 23A
F14 Auto Reference Signal 0-1 - 0
0= Disabled (Disabled)
1= Enabled
F15 No Motor Load 0-1 - 1
0= Disabled (Enabled)
1= Enabled
TR'sVFDIO.p65 5/31/00, 9:02 AM8 Downloaded from www.Manualslib.com manuals search engine

REDI-FLO VFD AUXILIARY INPUT/OUTPUT
REDI-FLO VFD ELECTRICAL INPUT/OUTPUT
Redi-Flo VFD output terminals are to be terminated into the Harting connector per Figure
10 below:
Figure 9:
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. Switching
the Redi-Flo variable frequency drive switch to STOP does not remove AC line voltage.
All input phases must be disconnected before it is safe to touch motor terminals or
control equipment parts. Lethal voltage may be present up to 2 minutes after
disconnecting from power source. To change Input/Output line connections, first make
sure that input power is turned off and Redi-Flo VFD is disconnected. Then remove the
Redi-Flo VFD cover and wire for 115V or 230V.
CAUTION !
Figure 10:
Figure 11: Diagram of input and output terminals
located on top circuit board (behind cover)
Page 15 Page 16
• 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.
• 0 - 10V External speed (frequency) reference: To connect a 0-10V (0-1 mA)
external speed reference device, (Yokogawa Model # 251-320-MTMT or equivalent),
connect to terminals 4 and 9 as labeled in Figure 11.
• 4 - 20 mA Input signal: Can be used to control the Redi-Flo VFD. To set the
Redi-Flo VFD to follow a 4-20 mA input signal from a control device, connect to
terminals 5 and 6 as shown in Figure 11. The mode selection knob must also be turned
to the appropriate automatic mode, RF2A or RF4A depending on the pump being used.
A jumper is required between terminals 8 and 11, and enable Operator Adjustable
Control feature Auto Reference signal(F14) see Page 12-14.
• RST Auxiliary fault reset (reset): An auxiliary fault reset momentary contact between
terminals 7 and 11 as labeled in Figure 11.
• AUTO RUN Automatic run permissive: A jumper must be placed between
terminal 8 and 11 as labeled in Figure11, for automatic 4 - 20 mA speed reference signal
following capability. A jumper between terminals 8 and 11 does not affect manual
operation.
• DR DIS Drive enable/disable terminal: A switching device can be added to this
normally closed (jumpered) terminal giving an external enable/disable option. When
these terminals are opened during operation the unit coasts to a stop. The unit
ramps up when terminals are closed. This jumper is wired from terminal 1 to
terminal 10, as labeled in Figure 11.
• FWD/REV Pump rotation: Direction can be reversed externally by connecting a
switching device or jumper to terminals 11 and 12 as labeled in Figure 11. Open is
normal rotation and closed is reverse rotation.
•Run/Fault Signal outputs: Contact ratings, 2A @ 250V/30VDC
– K1-Redi-Flo VFD Speed Reached Output: Normally open contact between
terminals 14-15, to close when Redi-Flo VFD is in run mode and speed dial set
frequency is reached.
– K2-Redi-Flo VFD No Fault/Fault Output: Normally open and normally closed
contacts terminals 17-18. Relay to energize upon application of power. The N.O.
and N.C. contacts will change state when fault occurs.
– K3-Redi-Flo VFD Run Acknowledge Output: Normally open contact terminals 19-
20 to close when Redi-Flo VFD is in run mode and there is output current.
Input Power Terminals
The Input voltage can be changed between 115V and 230V by changing the line input
connections as shown in Figure 9 below.
L1 L2 L3 GND L1 L2 L3 GND
White Black Green
(Ground) White Black Green
(Ground)
115V 230V
UVW
G
1234
White
Green
Red
Black
Harting Terminals
Drive Terminals
To access output terminals refer to page 13 steps 1-2
Output Power Terminals
URES
.
TR'sVFDIO.p65 5/31/00, 9:02 AM9

REDI-FLO VFD AUXILIARY INPUT/OUTPUT
REDI-FLO VFD ELECTRICAL INPUT/OUTPUT
Redi-Flo VFD output terminals are to be terminated into the Harting connector per Figure
10 below:
Figure 9:
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. Switching
the Redi-Flo variable frequency drive switch to STOP does not remove AC line voltage.
All input phases must be disconnected before it is safe to touch motor terminals or
control equipment parts. Lethal voltage may be present up to 2 minutes after
disconnecting from power source. To change Input/Output line connections, first make
sure that input power is turned off and Redi-Flo VFD is disconnected. Then remove the
Redi-Flo VFD cover and wire for 115V or 230V.
CAUTION !
Figure 10:
Figure 11: Diagram of input and output terminals
located on top circuit board (behind cover)
Page 15 Page 16
• 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.
• 0 - 10V External speed (frequency) reference: To connect a 0-10V (0-1 mA)
external speed reference device, (Yokogawa Model # 251-320-MTMT or equivalent),
connect to terminals 4 and 9 as labeled in Figure 11.
• 4 - 20 mA Input signal: Can be used to control the Redi-Flo VFD. To set the
Redi-Flo VFD to follow a 4-20 mA input signal from a control device, connect to
terminals 5 and 6 as shown in Figure 11. The mode selection knob must also be turned
to the appropriate automatic mode, RF2A or RF4A depending on the pump being used.
A jumper is required between terminals 8 and 11, and enable Operator Adjustable
Control feature Auto Reference signal(F14) see Page 12-14.
• RST Auxiliary fault reset (reset): An auxiliary fault reset momentary contact between
terminals 7 and 11 as labeled in Figure 11.
• AUTO RUN Automatic run permissive: A jumper must be placed between
terminal 8 and 11 as labeled in Figure11, for automatic 4 - 20 mA speed reference signal
following capability. A jumper between terminals 8 and 11 does not affect manual
operation.
• DR DIS Drive enable/disable terminal: A switching device can be added to this
normally closed (jumpered) terminal giving an external enable/disable option. When
these terminals are opened during operation the unit coasts to a stop. The unit
ramps up when terminals are closed. This jumper is wired from terminal 1 to
terminal 10, as labeled in Figure 11.
• FWD/REV Pump rotation: Direction can be reversed externally by connecting a
switching device or jumper to terminals 11 and 12 as labeled in Figure 11. Open is
normal rotation and closed is reverse rotation.
•Run/Fault Signal outputs: Contact ratings, 2A @ 250V/30VDC
– K1-Redi-Flo VFD Speed Reached Output: Normally open contact between
terminals 14-15, to close when Redi-Flo VFD is in run mode and speed dial set
frequency is reached.
– K2-Redi-Flo VFD No Fault/Fault Output: Normally open and normally closed
contacts terminals 17-18. Relay to energize upon application of power. The N.O.
and N.C. contacts will change state when fault occurs.
– K3-Redi-Flo VFD Run Acknowledge Output: Normally open contact terminals 19-
20 to close when Redi-Flo VFD is in run mode and there is output current.
Input Power Terminals
The Input voltage can be changed between 115V and 230V by changing the line input
connections as shown in Figure 9 below.
L1 L2 L3 GND L1 L2 L3 GND
White Black Green
(Ground) White Black Green
(Ground)
115V 230V
UVW
G
1234
White
Green
Red
Black
Harting Terminals
Drive Terminals
To access output terminals refer to page 13 steps 1-2
Output Power Terminals
URES
.
TR'sVFDIO.p65 5/31/00, 9:02 AM9 Downloaded from www.Manualslib.com manuals search engine

TROUBLESHOOTING
Figure 13
Status Lights
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.
Status 2
• Flashing: Motor Overload fault is pending. Motor current has exceeded maximum
allowed current (5.5A-RF2 & 7.5A-RF4) and Redi-Flo VFD will trip on an overload
(OL1) fault in 60 seconds if speed is not turned down (load reduced).
Status 3
• Flashing: Undercurrent fault is pending. If the speed is not turned down within 8
seconds, the Redi-Flo VFD will trip on an under current (UC) fault.
• Solid: Under current trip/fault is disabled.
Redi-Flo Variable Frequency Drive
The Redi-Flo VFD will display an fault if any major fault occurs.
If the display
shows this: The
Fault is: Remedy:
Which may be
caused by:
Over temperature • The VFD is overloaded •Reduce the load by reducing the frequency
•The VFD is thermally •Check that the VFD's max. amb. temp. is
overloaded not exceeded and it has proper ventilation
• Defective VFD •Have VFD checked by Grundfos
technician
Under voltage •Input voltage too low • Reset the VFD, if it cuts out again, check
•Input wire run too long voltage at VFD and power source to
•Input wire size too determine where voltage loss has occurred
small and increase voltage as needed
• DC bus is charging •Check input 120,230 voltage wiring
termination
•Check input voltage
Over voltage •Input voltage too high • Reset the VFD, if it cuts out again check
voltage at power source and reduce
voltage as needed
Motor overload •Motor drawing • Check pump for blockage or excess wear,
high amps repair or replace as needed
(5.5A-RF2/7.5A-RF4) • Check F08 operators adjustments on pg.13
•Locked rotor
•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. The
•Transistor shorted insulation resistance must be greater than
1.5 M *
•Have VFD checked by Grundfos technician
VFD disabled • Remote connection •Check external device operation
contact open •Check Jumper
• Jumper between
terminals 1-10
removed
Over current •Motor or motor lead •Reduce the frequency
defective/damaged •Check motor and lead with megohmmeter
• VFD amp draw above and repair or replace as needed. The
16A insulation resistance must be greater than
•Defective motor 1.5 M *
• Defective VFD •Check pump for locked rotor condition
•Have VFD checked by Grundfos technician
Under current • Pump running dry or •Check water level, drawdown,
shut off or at pump off pumping level and above ground pressure
for these conditions
•Check pump for proper rotation
•Motor current below •Let motor cool and try to restart
UC (F10)setting
Restart delay •Under current restart is •Pump will automatically restart after preset
pending delay
•Set "0" on F11 to eliminate auto
restart
No Motor Load •Motor is not connected •Check ambient fluid temperature
•Motor thermal is open • Reduce motor load
•Connect motor to drive
Page 18
TROUBLESHOOTING
Page 17
*Do not use megohmmeter at Redi-Flo VFD output terminals.
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.
TR'sVFDIO.p65 5/31/00, 9:02 AM10

TROUBLESHOOTING
Figure 13
Status Lights
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.
Status 2
• Flashing: Motor Overload fault is pending. Motor current has exceeded maximum
allowed current (5.5A-RF2 & 7.5A-RF4) and Redi-Flo VFD will trip on an overload
(OL1) fault in 60 seconds if speed is not turned down (load reduced).
Status 3
• Flashing: Undercurrent fault is pending. If the speed is not turned down within 8
seconds, the Redi-Flo VFD will trip on an under current (UC) fault.
• Solid: Under current trip/fault is disabled.
Redi-Flo Variable Frequency Drive
The Redi-Flo VFD will display an fault if any major fault occurs.
If the display
shows this: The
Fault is: Remedy:
Which may be
caused by:
Over temperature • The VFD is overloaded •Reduce the load by reducing the frequency
•The VFD is thermally •Check that the VFD's max. amb. temp. is
overloaded not exceeded and it has proper ventilation
• Defective VFD •Have VFD checked by Grundfos
technician
Under voltage •Input voltage too low • Reset the VFD, if it cuts out again, check
•Input wire run too long voltage at VFD and power source to
•Input wire size too determine where voltage loss has occurred
small and increase voltage as needed
• DC bus is charging •Check input 120,230 voltage wiring
termination
•Check input voltage
Over voltage •Input voltage too high • Reset the VFD, if it cuts out again check
voltage at power source and reduce
voltage as needed
Motor overload •Motor drawing • Check pump for blockage or excess wear,
high amps repair or replace as needed
(5.5A-RF2/7.5A-RF4) • Check F08 operators adjustments on pg.13
•Locked rotor
•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. The
•Transistor shorted insulation resistance must be greater than
1.5 M *
•Have VFD checked by Grundfos technician
VFD disabled •Remote connection •Check external device operation
contact open •Check Jumper
• Jumper between
terminals 1-10
removed
Over current •Motor or motor lead •Reduce the frequency
defective/damaged •Check motor and lead with megohmmeter
• VFD amp draw above and repair or replace as needed. The
16A insulation resistance must be greater than
•Defective motor 1.5 M *
• Defective VFD •Check pump for locked rotor condition
•Have VFD checked by Grundfos technician
Under current • Pump running dry or •Check water level, drawdown,
shut off or at pump off pumping level and above ground pressure
for these conditions
•Check pump for proper rotation
•Motor current below •Let motor cool and try to restart
UC (F10)setting
Restart delay •Under current restart is •Pump will automatically restart after preset
pending delay
•Set "0" on F11 to eliminate auto
restart
No Motor Load •Motor is not connected •Check ambient fluid temperature
•Motor thermal is open • Reduce motor load
•Connect motor to drive
Page 18
TROUBLESHOOTING
Page 17
*Do not use megohmmeter at Redi-Flo VFD output terminals.
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.
TR'sVFDIO.p65 5/31/00, 9:02 AM10 Downloaded from www.Manualslib.com manuals search engine