Specifications

Multiplex Company, Inc.
Complete System Overview
00218011 Revision B (KAK) 31 July, 2000
34
Ice Bank Control
Function of the ice bank control
Pressure switch that turns on and off the refrigeration compressor when the control bulb
indicates the need.
Failure of the ice bank control
Defective ice bank control stuck in the open position will not allow the refrigeration compressor
to operate.
Defective ice bank control stuck in the closed position will not allow the refrigeration compressor to
cut-off.
Removing the cover mounting plate will
alter the switch calibration.
Notes:
w Check circuit breaker
w Check head pressure control (on remote condenser units)
w If the bulb is engulfed in ice, the compressor should not be running
w Check contactor coil for welded points
w Do not change bulb location
w If you have two controls the primary control bulb is positioned closer and lower on the
evaporator coil
w A warning light will indicate when the secondary control has taken over