en | AHT Cooling Systems GmbH Maintenance | 11
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10.2.2 Restart
For restarting, see → Start-up.
10.3 Malfunctions during operation
NOTICE
Material and property damage in the event of
an alarm display.
Move the goods to another appliance with the
same product temperature class.
▪ Contact the maintenance service promptly
(see → Maintenance services).
Display of alarms
There are different types of alarms that indicate mal-
functions during operation.
–
Display indicator (see → page 11, chapter 5).
–
Error code
–
Flashing red dot
–
Acoustic alarm
11 Maintenance
Inspection tasks by operating personnel
Proper condition of
appliances
Use as intended
Operation
Foreign objects in
goods area
Use as intended
Operation
Mechanical haz-
ards
Operation
Temperature dis-
play
Operation
Proper loading with
goods
Contamination of the
appliance, including
glass
Food and packaging
residues
Floor (surroundings
of the appliance)
Formation of ice on
the inner container
Mechanical haz-
ards
Operation
Puddles in front
of/underneath appli-
ance (condensation
water)
Automatic de-
frosting
Mechanical haz-
ards
Electrostatic discharge and spark for-
mation with flammable refrigerant.
On a damaged / leaking refrigerant circuit,
sparks may ignite escaping refrigerant. Fire
hazard.
▪ Use a damp cloth or sponge to re-
move condensation water.
▪ Do not use dry cloths or sponges to
dry the appliance.
▪ Do not operate any electrical devices
(e.g. wet vacuum cleaners) inside
the cooling compartment that do not
correspond to the design recom-
mended by the manufacturer. Appli-
ances with explosion protection
markings (see → Explanation of
symbols) are permitted.
11.1 Defrosting
Responsibility
–
Operating companies
–
Operating personnel
The appliance features automatic defrosting.
If there is an increased formation of ice in the inner
container, a semi-automatic defrosting must be
started (see → page 11, chapter 5).
For hygienic reasons, complete defrosting must be
carried out (see page 19, chapter 11.1.1).
11.1.1 Complete defrosting
We recommend combining the complete defrosting
with the basic cleaning.
Defrosting interval
–
For hygienic reasons, at least every six
months
Carrying out a complete defrosting
Carrying out a complete defrosting is equivalent to the
cleaning steps with the cooling function switched off.
(see page 20, chapter 11.2.1).
11.2 Cleaning
Reasons for regular and thorough cleaning (basic
cleaning):
–
Ensuring the necessary hygiene. Always keep
the goods area in a clean condition.
–
Lowest possible energy consumption.
–
Maintaining trouble-free operation.
–
Extension of the service life of the appliance.
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