-
17-
- Before the cleaning, the unit should be unplugged and secured against any possible start-
up. If the air contains fibres, the fins of the heat exchanger will become dirty. To avoid
malfunction, the heat exchanger and the tank overflow must be cleaned from time to time.
- The condenser / evaporator can either be cleaned with a soft brush, with compressed air,
or a vacuum cleaner. Please do not use any sharp or sharp-edged objects. The fins must
not be bent or damaged during the cleaning procedure.
12) Causes for malfunction
Malfunction
Cause
Solution
power plug is not plugged in;
energy supply is disconnected
check the power plug and mains fuse;
if no fault is detected, notify a
specialised firm
Unit does not run
supply voltage is too low
supply voltage must be
230V
10%, 50 Hz
high strain on the refrigeration
room due to contents
store less content (observe storage
data and time limit of the chilled
goods)
there is too much content or the
content is too warm, or the door of
the refrigeration room was open
too long
store less content at one time, or cool
down the temperature of the content to
the desired storage temperature
before adding
ambient temperature is too high
reduce ambient temperature (max.
35°C for standard model and max. 45°
for high-temperature model)
Unit runs continuously
evaporator is dirty
condenser is dirty
clean fins;
see maintenance and cleaning
Unit runs continuously and the
evaporator is iced-up
door open for long periods;
uncovered liquids in the cooling
cell
keep the periods with door open short,
cover liquids;
activate manual defrost
if necessary, increase the defrost cycle
(see pg. 10 / 14)
Nothing shown in the display of
the remote control
power supply for the remote
control was discontinued or there
was a short circuit.
check the power supply to the remote
control; if no fault is found, notify a
specialised firm
if necessary, information available at
+49 9221 / 709 321
The display of the remote
control shows: ”---“
the communication between the
remote control and the
refrigeration controller was
disconnected:
a) due to incorrect
parameterisation
b) due to interruption or short
circuit in the connection lines
a) Change unit address and/or baud
rate by using the setting mode of the
remote control (see pg. 13)
If necessary, information available at
+49 9221 / 709321
b) Check connection between the
remote control and the refrigeration
controller and if necessary re-establish
it.
Lamp or client-supplied door
frame heating doesn’t work
faulty fuse
check fuse, and if necessary replace
Содержание GEKN 1200
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