Safety Limit Feature - Manitowoc SM Series Installation, Operation And Maintenance Manual

Troubleshooting
Problem
Low ice capacity.

Safety Limit Feature

In addition to the standard safety controls, such as the high
pressure cutout, your Manitowoc ice machine features built-
in safety limits, which will stop the ice machine if conditions
arise which could cause a major component failure.
Before calling for service, re-start the ice machine using the
following procedure:
1. Press the On/Off button and turn off the ice machine,
then press the On/Off button again to start the ice
machine.
A. If the safety limit feature has stopped the ice
machine, it will restart after a short delay. Proceed
to step 2.
B. If the ice machine does not restart, see "Ice machine
does not operate" on the previous page.
2. Allow the ice machine to run to determine if the
condition is recurring.
A. If the ice machine stops again, the condition has
recurred. Call for service.
B. If the ice machine continues to run, the condition
has corrected itself. Allow the ice machine to
continue running.
32
Possible Cause
The condenser is dirty.
High air temperature around ice machine (air-
cooled models).
Inadequate clearance around the ice
machine.
Objects stacked around ice machine, blocking
airflow to condenser (air-cooled models)
Hot incoming water.
Incorrect incoming water pressure. Water
pressure is too low or water filter is restricted.
To Correct
Clean the condenser.
Air temperature must not exceed 110°F
(43°C).
Provide adequate clearance.
Remove items blocking airflow.
Connect the ice machine to a cold water
supply.
Water pressure must be 20 – 80 psi (137.9 –
551.5 kPa). Refer to section 2 for plumbing
requirements. Replace water filter.
Part Number 000001590 Rev03 11/19
Section 5