Part Number STH098 06/19 79
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 45 minutes, the control board
automatically initiates a harvest cycle.
• After 3 consecutive 45minute 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 energizes the water pump and
extends the harvest cycle another 3.5 minutes (7
minutes total).
• If the ice damper does not open and close within the
7 minute harvest cycle the ice machine enters a water
thaw cycle for 170 seconds.
• If the damper does not open/close within the 170
second thaw cycle, a second thaw cycle starts.
• The control board automatically initiates a freeze
sequence when the thaw cycle(s) is complete.
• If 3 consecutive 7 minute harvest/thaw 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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