Safety Limit Feature - Manitowoc 820C Serie Manual De Instalación, Operación Y Mantenimiento

Troubleshooting
Problem
Ice machine produces shallow or
incomplete cubes, or the ice fill pattern
on the evaporator is incomplete.
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:
46
Possible Cause
Ice thickness probe is out of adjustment.
Water trough level is too low.
Water inlet valve filter screen is dirty.
Water filtration is poor.
Hot incoming water.
Water inlet valve is not working.
Incorrect incoming water pressure.
Ice machine is not level.
Water inlet valve filter screen is dirty.
Incoming water supply is shut off.
Water inlet valve stuck open or leaking.
The condenser is dirty.
High air temperature entering condenser.
The harvest assist air compressor is not
functioning.
Adjust the ice thickness probe. (See page 26)
Check the water level probe position.
Remove the water inlet valve and clean the
filter screen.
Replace the filter.
Connect the ice machine to a cold water supply.
(See page 16)
Replace the water inlet valve.
Water pressure must be 140 kPa - 550 kPa.
Level the ice machine.
Remove the water inlet valve and clean the
filter screen.
Open the water service valve.
Press the power button and turn off the ice
machine, if water continues to enter water
trough, replace the water inlet valve.
Clean the condenser.
Refer to air temperature chart for your model
on page 9.
Call for service.
1. Press the power button. The display reads "Off". Press
the power button again, and the display reads "Making
Ice".
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 repeats.
A. If the ice machine stops again, the condition has
repeated. 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: 000013325 Rev 02 6/17
Section 5
To Correct