Replacement Parts Instructions - Roberts Gorden CORAYVAC Installation Manual

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ROBERTS GORDON CORAYVAC

11.4 Replacement Parts Instructions

DANGER
Electrical Shock Hazard
Disconnect electric before service.
Controller must be properly grounded to an
electrical source.
Failure to follow these instructions can
result in death or electrical shock.
11.4.1 Plug-In Relay
To replace the plug-in relay, turn off 120 V power to
the relay boards. Turn off the 120 V power switch on
the relay boards. Locate the malfunctioning relay and
pull the relay from its socket. Fit a new relay in the
socket. Return 120 V power to the relay board and
turn on the 120 V power switch on the relay board.
Press the reset button on the control board and close
the doors.
11.4.2 Variable Frequency Drive (VFD)
To replace the Variable Frequency Drive, turn off all
power to the drive assembly at the disconnect switch.
Mark all wires connected to the VFD, noting the ter-
minals to which they are secured. Remove all wires
from the VFD terminals. Remove the VFD from its
mounting plate by removing the four securing screws.
Verify that the input voltage noted on the rating plate
of the VFD matches the input voltage of the old VFD.
Secure the new VFD to the mounting plate with the
four screws. Return all wires to the correct VFD ter-
minals. If possible, it may be easier to partially rewire
the new VFD before mounting it to the mounting
plate. Close the door and return power to the VFD.
Reprogram the VFD's parameters according to Page
49, Section 6.2, run the system.
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ONTROLLER NSTALLATION ANUAL