68 Part Number STH042 3/14
Safety Limit Feature
In addition to the standard safety controls, your
Manitowoc ice machine features built-in safety limits
that will stop the ice machine if conditions arise which
could cause a major component failure.
Service Light: The service light energizes whenever
a safety limit has been exceeded.
Safety Limit 1
If the freeze time reaches 60 minutes, the control
board automatically initiates a harvest cycle.
• After 3 consecutive 60 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 60-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 returns the ice machine to the
freeze cycle.
• 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 75 consecutive 3.5 minute harvest cycles occur
the wrench light on the touch pad will flash on/off
at 1 second intervals.
• If 100 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.
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