Trouble-shooting
Page 13
Operation & Maintenance Manual - Vision Chilled Displays
3.0 - BUILD UP OF ICE ON THE COIL
In conditions of high humidity it is possible for ice to accumulate on the coil, and not be fully cleared by the defrost system.
This problem is usually only likely to occur on units operating 24hours a day in conditions of high humidity. The result will be
a failure to maintain temperature, as airflow through the coil is restricted.
If during cleaning an excessive build up of ice is observed, turn the unit off overnight with the main deck and airflow baffle
plates removed.
Isolate the display unit completely from the mains electricity supply. Turning off the power switch on the display
is not sufficient.
If the build up was very heavy and the unit is fitted with an automatic evaporating drip tray it will be necessary
to guide the water resulting from the melting of the ice into a bucket rather than the evaporating drip tray oth-
erwise it will overflow.
Remove the evaporator drip tray and locate a funnel or bucket under the plastic waste pipe located above it.
See cleaning instructions for removal of the drip tray.
When all the ice has melted re-assemble the tank and deck components, re-fit the evaporator drip tray, then switch the
power back on and check the operation of the unit.
If you are in any doubts of your ability to carry out the above procedure please contact our service department for assis-
tance.
Please note that a visit by a service engineer to clear the coil of ice will not be covered by warranty
unless it is established that it was caused by a component failure.
If the build up repeats itself try turning the unit off every night.
If this does not solve the problem call our service department on 0151 548 2211 to check the operation of the
defrost system.
