Manitowoc Q450 Service Technician's Handbook page 91

SAFETY LIMIT NOTES
• Because there are many possible external
problems, do not limit your diagnosis to only the
items listed in these charts.
• A continuous run of 100 harvests automatically
erases the safety limit code.
• The control board will store and indicate only one
safety limit – the last one exceeded.
• If the toggle switch is moved to the OFF position and
then back to the ICE position prior to reaching the
100-harvest point, the last safety limit exceeded will
be indicated.
• If the Harvest light did not flash prior to the ice
machine restarting, then the ice machine did not
stop because it exceeded a safety limit.
SAFETY LIMIT CHECKLIST
The following checklists are designed to assist the
service technician in analysis. However, because
there are many possible external problems, do not
limit your diagnosis to only the items listed.
–81–