Sequence - Hoshizaki KM-320MAH Service Manual

3. Sequence

1st Cycle
1. Unit energized and control switch to "ICE"
position. Water supply cycle starts.
Water Valve
5. After the first 5 minutes in freeze cycle.
Ready to complete freeze cycle when float
switch circuit opens.
IMPORTANT
Board never accepts freeze completion signal
within the first 5 minutes in freeze cycle.
2. After 1 minute, defrost
cycle starts.
Freeze
Cycle
Pump, Fan &
Line Valve
3. Thermistor reads 48°F (9°C).
Defrost timer starts counting.
Water Valve
Hot Gas Valve
Defrost
Cycle
4. Defrost timer stops counting.
Defrost cycle is completed and
freeze cycle starts.
IMPORTANT
1. Board never accepts defrost completion signal
within the first 2 minutes in defrost cycle.
2. Defrost cycle time is limited to 20 minutes even
if defrost timer does not stop counting.
13
IMPORTANT
Water valve opening is
limited to 6 minutes.