Safety Limit Feature - Manitowoc NEO UD0140A Manuel D'instructions

Customer Support
Problem
Ice machine produces shallow or
incomplete cubes, or the ice fill
pattern on the evaporator is
incomplete.
Low ice capacity.
Ice sheet is thick

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:
22
Possible Cause
Ice thickness switch is out of adjustment.
Water trough level is too high or too low.
Water filtration is poor.
Hot incoming water.
Incorrect incoming water pressure.
Ice machine is not level.
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.
Water trough level is too high
Power button was turned off/on during the
freeze cycle and ice remained on the
evaporator
Ice damper was opened and closed in the
harvest cycle before the ice released
Long harvest cycles with repeated safety
limit indication
Adjust the ice thickness switch.
Check the water level.
Replace the filter.
Connect the ice machine to a cold water
supply.
Water pressure must be 20-80 psi (137.9 -
551.5 kPa).
Level the ice machine.
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.
Adjust ice thickness float
Allow ice to thaw and release from the
evaporator, then restart
Allow ice to thaw and release from the
evaporator, then restart
Call for service
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.
Part Number 040002909 Rev01 4/15
Section 5
To Correct