1.12 Operation, Selector switch is in the “Clean” position.
The assumption before proceeding are that water is supplied to the ice maker (see section
1.8), there is proper electrical power to the ice maker (see section 1.7), and drain is
properly plumbed or the drain pump is operating properly.
Refer to timing/operation diagram in figure 1.3. Upon setting the selector switch to the
“CLEAN” position during the production or harvest cycle, the water solenoid will
energize and all other loads will be de-energized. The following sequence will now
occur:
1. After 3.0 minutes the water solenoid will de-energize and the circulation pump will
energize.
2 After 30 minutes the circulation pump will de-energize and the drain solenoid will
energize.
3 After 75 seconds the drain solenoid will de-energize and the water solenoid will
energize.
4 After 3.0 minutes the water solenoid will de-energize and the circulation pump will
energize.
5 After 10 minutes the circulation pump will de-energize and the drain valve will
energize.
6 After 75 seconds the drain solenoid will de-energize. The clean cycle is now
complete.
All loads will remain off as long as the selector switch remains in the “CLEAN” position
and the power is not removed and re-applied.
If at any time during a clean cycle the selector switch is moved from the “CLEAN”
position, all loads except the drain solenoid will de-energize (this includes the “OFF”
position). The drain solenoid will energize for 75 seconds and then de-energize. The
unit will now operate normally according to whether it is in the “OFF” or “ON” position.
2.1 Sealed System
The following should always be practiced with any sealed system that is opened. Only
open the sealed system as the final diagnosis. Check all basic areas such as wiring, water
supply, drain setup, proper air flow, etc. first. Many times these areas can resemble
sealed system problems. The diagnosis of a sealed system problem can be determined by
accurate pressure and temperature measurements.
1. Use a leak detection system that will detect R-134A refrigerant. Leaks need to be
found on any leaking system
before
repair takes place.
2. The drier must be replaced anytime the sealed system is opened. Order correct drier
replacement from Viking Service Parts. Failure to use correct part will result in
repeated sealed system failure in the future.
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