Grundfos Redi-Flo Series, Redi-Flo4, Redi-Flo2 Installation And Operating Instructions Manual

GRUNDFOS INSTRUCTIONS

For Sales & Service Contact

2650 E. 40th Ave. • Denver, CO 80205

Phone [phone] • Fax [phone]

1-800-833-7958

www.geotechenv.com

Redi-Flo Variable Frequency Drive

USA Installation and Operating Instructions

1

SAFETY NOTICE

This equipment contains voltages that may be as great as 1000 volts! Electrical
shock can cause serious or fatal injury. Only qualified personnel should attempt the
start–up procedure or troubleshoot this equipment.

PRECAUTIONS:

WARNING: Do not touch any circuit board, power device or electrical
connection before you first ensure that power has been
disconnected and there is no high voltage present from this
equipment or other equipment to which it is connected.
Electrical shock can cause serious or fatal injury. Only
qualified personnel should attempt the start–up procedure or
troubleshoot this equipment.

WARNING: Be sure the system is properly grounded before applying
power. Do not apply AC power before you ensure that
grounds are connected. Electrical shock can cause serious or
fatal injury.

WARNING: Do not remove cover for at least five (5) minutes after AC
power is disconnected to allow capacitors to discharge.
Electrical shock can cause serious or fatal injury.

CAUTION: Disconnect motor leads (T1, T2 and T3) from control before
you perform a “Megger” test on the motor. Failure
to disconnect motor from the control will result in extensive
damage to the control. The control is tested at the factory for
high voltage / leakage resistance as part of Underwriter
Laboratory requirements.

CAUTION: Do not connect AC power to the Motor terminals T1, T2 and
T3. Connecting AC power to these terminals may result in
damage to the control.

3

QUICK START GUIDE

QUICK START GUIDE

Note: The RediFlo trade name is used only in the United States, other parts of the world refer to the Redi-Flo2
pump as the MP1 and the Redi-Flo4 pumps as SPE. They may be referred to as either in this manual.

To operate the Redi-Flo VFD system, simply:

1. Submerge the Redi-Flo2 (MP1) or Redi-Flo4 (SPE) pump in the water to be pumped. (Note: insure pump is
rotating in the correct direction, see page 6)

2. Connect the motor leads to the Redi-Flo VFD. (Note: With RF4 Variable Performance Pumps you must have
an adapter cord to connect to Redi-Flo VFD.

#3 and #4 for operation with generator only. WARNING: Do not let the generator run out of gas while
powering the VFD. If it surges and creates excessive voltage, internal VFD damage could result.

3. If using a generator, start the generator and allow it to warm up.

4. 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, at the end of this manual) 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.

5. Plug the Redi-Flo VFD into a generator or connect to utility power supply. The unit accepts 115V or 230V
sources. Refer to the Input Power Terminals section for wiring instructions.

6. The VFD will initialize and be ready to drive the motor. After the initialization screen appears, the following will
be displayed:

1) Status (Stop or Fwd)

2) Pump type (MP1 or SPE)

3) Motor voltage (output voltage)

4) Motor current (output current)

5) Motor frequency (output freq in Hz)

MP1

1

LOCAL

2

3

4

DIAG STOP

MOTOR VOLTS 0.0V
MOTOR CURR 0.0A
MOTOR FREQ 0.00Hz

5

PROG 0.00r MAIN

The VFD defaults to MP1 (Redi-Flo2) operation. To change to Redi-Flo4 press:

1) Press PROG soft key

2) Press ENTER button

3) Use arrow button to switch between MP1 and SPE

s

4) Press ENTER button

5) Press DIAG soft key to return to main display

7. To begin pumping, press the FWD key to start the motor and use the and arrow keys to increase or

s

s

decrease speed. Continuous holding of the arrow key will increase the rate of speed change. The STOP key is
used to stop the pump.

8. Pressing the ENTER key allows the user to quickly set the speed to any given value by using the and

s

arrows to change speed and the left/right arrow keys to cursor between digits.

s

9. When powering down, unplug the Redi-Flo VFD from the generator BEFORE removing the motor lead from

the Redi-Flo VFD or turning off the generator.

4

PRE-INSTAllATION ChECKlIST

PRE-INSTALLATION CHECKLIST

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, (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).

Figure 1

Redi-Flo2®

Redi-Flo4®

Figure 2

Figure 3

PRE-INSTALLATION CHECKLIST

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, (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).

Figure 1

Redi-Flo2®

Redi-Flo4®

Figure 2

Figure 3

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).

Redi-Flo2®

Figure 6Figure 5

The exact type of plug used will depend
upon your generator, The Redi-Flo VFD
is supplied with a standard NEMA 5-15P,
115V, 3 prong plug.

Figure 4

Redi-Flo4®

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, (See Figure 1)

2. Either a Redi-Flo2® (MP1) pump and motor with lead (Figure 2) or a Redi-Flo4™ (SPE) Variable Performance
pump, motor, lead, lead/plug and RF4 x VFD adapter cord (Figure 3)

(MP1)

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).

4. The Redi-Flo VFD can alternately be operated from single-phase 230VAC supplies. This requires the
replacement of the standard power cord with a cord designed for 230V receptacles. Grundfos does not supply a
230V power cord.

(SPE)

5