CVHE-SB-32A 30
CVHE/F/G Trim Balance Procedure
This procedure outlines the modifications necessary to the Starter module to allow operation of
the motor in the Wye configuration during test runs.
1 Unplug the connector from J10 to prevent the run contactor from coming in.
2 Unplug J14 to prevent transition from occurring.
3 Install a jumper on J12 between terminals 1 & 3 to maintain the shorting contactor closed.
4 Install a jumper through an on/off switch across J6 1,3 to start and stop the motor.
Run Procedure:
1 Lockout power to the chiller to prevent startup, until ready.
2 When ready for the run test, energize power to the chiller. The shorting contactor should
close. The motor will be controlled by the Auto push-button on the UCP2 Clear Language
Display. Stop will be controlled by the switch on J6.
3 Program the inlet guide vanes to zero target.
4 With the chiller in the “panic stop” mode, press Auto.
Start sequence:
1 Go to the service test menu and put the oil pump to the ON position. This will assure
lubrication while the stop signal is bypassed via the J6 Switch.
2 Normal start.
3 During acceleration, close the switch across J6.
Stop/Reset sequence
1 Open the switch across J6.
2 Allow the chiller to coast down.
3 Lockout the chiller.
4 Restore the oil pump to Auto.
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