CompressorAlarm Circuits
If the Compressor Motor Contactor fails to
complete the motor circuit, its Normally
Closed Auxiliary contacts energize the K1
Alarm Relay. Once energized the K1 Relay
maintains its own circuit through the
Normally Open K1 Contacts. The Compressor
Board Switch must be opened to de-energize
the K1 Relay.
The three Normally Closed K1 Contacts are
held open during alarm conditions. The K1
Contacts between T5 and T6 open the circuit
to the Compressor Alarm on the rack’s Alarm
Board.
HUSSMANN CORPORATION • BRIDGETON, MO 63044-2483 • Printed in USA
Revised August 1, 1996 P/N 340272A
4 - 13
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