Safety Limits - Manitowoc STH042 7/15 Technician's Handbook

SAFETY LIMITS

Safety limits are stored and indicated by the control
board. The number of cycles required to stop the ice
machine varies for each safety limit.
Safety limits can be reset by pressing the On/Off button
and starting a new ice making cycle.
A safety limit shutdown is indicated by the red Service
light on the touch pad.
Safety Limit 1
If the freeze time reaches 45 minutes, the control board
automatically initiates a harvest cycle.
• After 3 consecutive 45 minute cycles control board
light SL#1 along with the touch pad Service (wrench)
light will flash on/off at 1 second intervals.
• If 6 consecutive 45-minute freeze cycles occur, the
ice machine stops and the SL#1 light on the control
board and the Service (wrench) light on the touch
pad will be on continuously.
Safety Limit 2
If the harvest time reaches 3.5 minutes, the control board
automatically extends the harvest for 3.5 minutes. After
7 minutes a water assist harvest starts . The control board
returns the ice machine to the freeze cycle after the water
assist harvest ends or the ice falls from the evaporator.
• If three consecutive 3.5 minute harvest cycles occur,
the SL#2 light on the control board will flash on/off at
1 second intervals.
• If three consecutive 3.5 minute harvest cycles occur,
the ice machine stops and the SL#2 light on the
control board and the Service (wrench) light on the
touch pad will be on continuously.
Part Number STH042 7/15 53