Service Manual

Part Number 8014793 6/18 55
Safety Limits
Safety limits are stored and indicated by the control
board after three cycles. The number of cycles
required to stop the ice machine varies for each safety
limit.
• Safety Limit 1 - If the freeze time reaches 60
minutes, the control board automatically initiates a
harvest cycle. If 6 consecutive 60-minute freeze
cycles occur, the ice machine stops
• Safety Limit 2 single evaporator models - If the
harvest time reaches 3.5 minutes, the control
board automatically returns the ice machine to the
freeze cycle. If 500 consecutive 3.5 minute harvest
cycles occur, the ice machine stops.
• Safety Limit 2 Quad evaporator models - If the
harvest time reaches 7 minutes, the control board
automatically returns the ice machine to the freeze
cycle. If 500 consecutive 7 minute harvest cycles
occur, the ice machine stops.
• Safety Limit 3 Quad evaporator models - If the low
refrigerant pressure control opens, the ice
machine shuts off and starts a 5 minute delay
period. If 3 consecutive low pressure esvents
occur the ice machine stops and flashes the
safety/harvest light.
Use the following procedures to determine if the
control board contains a safety limit indication.
1. Move the toggle switch to OFF.
2. Move the toggle switch back to ICE. Watch the
safety limit/harvest lights on the control board. If a
safety limit has been recorded, the corresponding
light will flash once, twice or three times to
indicate which safety limit stopped the ice
machine.