102 Part Number STH025 8/12
Sequence of Operation
SELF CONTAINED AIR OR WATER COOLED
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 energize to purge the ice
machine of old water. This feature ensures that the ice
making cycle starts with fresh water.
2. Refrigeration System Equalization and
Start-Up
The harvest valve(s) and air pump(s) energize to
equalize high and low side refrigeration pressure.
After 5 seconds the contactor energizes the
compressor and supplies power to the condenser fan
motor. After 5 seconds the harvest valve(s) and air
pump(s) de-energize.
NOTE: The fan motor is wired through a fan cycle
pressure control and will cycle on and off when the
room temperatures is below 70°F (21°C).