Sequence Of Operation; Quietqube® Models; Initial Start-Up Or Start-Up After Automatic Shut-Off - Manitowoc Indigo Series Technician's Handbook

Sequence of Operation

QUIETQUBE® MODELS
NOTE: The power button must be depressed and the
water curtain/ice dampers must be in place on the
evaporator before the ice machine will start.
INITIAL START-UP OR START-UP AFTER
AUTOMATIC SHUT-OFF
1. Water Purge
Before the compressor starts, the water pump and water
dump solenoid are energized to purge the ice machine of
old water. This feature ensures that the ice making cycle
starts with fresh water.
2. Refrigeration System Start-Up
Ice Machine Head Section:
The harvest valve(s), air pump(s), liquid line solenoid
valve and CVD relay energize to equalize high and low
side refrigeration pressure.
After 10 seconds the harvest valve(s) and air pump(s)
de-energize.
ICVD Condensing Unit:
The low pressure switch closes and sends 24 volts to
the control board. The control board completes the
circuit through the CVD relay and sends 24 volts to the
contactor coil and energizes the compressor.
Part Number STH026 6/15 103