Manitowoc QC0700, Technician'S Handbook

Page: 108 / 292

108 Part Number 80-1230-9 10/10
Remote Condensing Unit
3. Freeze
When the refrigerant pressure is high enough, the low-
pressure control closes. Closing the low pressure
control energizes the contactor coil and the
compressor starts.
The compressor increases the refrigerant pressure,
the fan cycling control closes and the condenser fan
motor starts. The compressor and condenser fan
motor remain energized during the entire Freeze
Cycle.
AUTOMATIC SHUT-OFF
4A. Ice Run Out
Ice will build up in the bin until it contacts the bin level
probe. After ice contacts the bin level probe for 30
continuous seconds the compressor de-energizes. To
allow excess ice to run out, the gear motor and the
water float valve solenoid remain energized for an
additional 4 minutes, then de-energize.
4B. Water Drain
To allow water to drain from the evaporator, the dump
valve energizes for 90 seconds, then de-energizes.
An 8-minute lockout starts when the compressor de-
energizes. When the ice drops away from the bin level
probe the ice machine will begin an initial start-up
cycle, provided the “8-minute lockout” has expired.
8 Minute Lockout
An 8 minute lockout starts when the compressor de-
energizes. The bin level light will flash until the 8-
minute lockout expires.
After the 8 minute lockout expires the bin level light will
de-energize.
The 8 minute lockout time can be overridden by
moving the ON/OFF/CLEAN toggle switch from ICE to
OFF then back to ICE.