Maintenance, Defrosting And Cleaning; Maintenance; Defrosting Instructions; Cabinets With A Mechanical Temperature Controller - AHT ATHEN 175 Manual Del Usuario

AHT Cooling Systems GmbH
If the permitted variance from the set nominal temperature
is exceeded (warmer), pair of contacts 3 and 6 close and
pair of contacts 3 and 5 open.
3 2 1
6 5 4
You can obtain more information about other remote
control options from your local stockist.
Connection assignment of bush for warning system (view
from rear of cabinet)
An appropriate plug is available as an accessory.

10 Maintenance, defrosting and cleaning

10.1 Maintenance

Mains connection cables for the refrigeration system
and light can only be replaced by the manufacturer's
service team.
WARNING: Do not heat cabinets to more than 70°C
(158°F) and do not subject them to excess heat
(heating radiators, etc.).
The cabinets require very little maintenance.
If the interior lining panels are covered in a thick layer
of ice, this may result in reduced performance and a
deviating temperature display.
Depending on the level of frosting on the interior
lining, this has to be defrosted occasionally (several
times a year from experience) once it is more than
around 10 mm thick. The frosting (icing over) is
mainly dependent on the ambient conditions (air
humidity) and handling (frequent opening or leaving
the cover open).
Thin layers of frosting should be scraped off once a
week using the plastic ice scraper provided.

10.2 Defrosting instructions

For units with automatic defrost (AD): If water appears un-
der the unit after defrosting, check the seal tightness of the
defrosting tray.
10.2.1 Cabinets with a mechanical temperature
controller
(See chapter 8.1)
WARNING: Do not scrape or knock off the layer of ice
and frosting with sharp objects or tools. Risk of
damaging the inner panels.
Do not spray high-pressure cleaners (jets of steam) into
the machine and storage compartment.
Move goods into another cabinet
Use the defrost button to turn off the cabinet
Open or remove cover
Leave cabinet to defrost
Use a wet/dry vacuum cleaner to remove the
condensate, dry up with an absorbent cloth or sponge
or if there is a condensate outlet, place a try under the
outlet before opening the outlet plug and drain the melt
water through the condensate outlet.
Wipe the cabinet dry, cleaning the interior at the same
time and closing the condensate outlet, if one is
present
Switch on again with the defrost button
Close cover, leave freezer to cool for around 1 - 2
hours and put goods back in
10.2.2 Cabinets with an electronic temperature
controller
(See chapter 8.2)
WARNING: NEVER de-energise the chest. Do NOT
disconnect the chest's mains plug for defrosting. An
unplugged cabinet will always cause a fault in the entire
bus system.
Move goods into another cabinet
To deactivate, briefly press the Standby/Reset button.
"- - -" appears permanently on the 7-segment display.
The defrost phase is started. The cooling system is
shut down immediately during defrost.
Open or remove cover
Leave cabinet to defrost
To clean the interior lining in cabinet types (S) and (U),
the base grid of the product grille and the aluminium air
ducts have to be removed from the interior lining. You
can fold the sheet metal part up and over the
compressor step for cleaning purposes.
Use a wet/dry vacuum cleaner to remove the
condensate, dry up with an absorbent cloth or sponge
or if there is a condensate outlet, place a try under the
outlet before opening the outlet plug and drain the melt
water through the condensate outlet.
Wipe the cabinet dry, cleaning the interior at the same
time and closing the condensate outlet, if one is
present.
With cabinet types (S) and (U), refit the aluminium air
ducts, base grid and removed product grille.
Once the cabinet has been defrosted and then
cleaned, the cabinet's cooling system has to be
reactivated. To do this, briefly press the Standby/Reset
button again.
The current interior temperature of the cabinet appears
again on the 7-segment display. The defrost phase is
complete.
Close cover, leave freezer to cool for around 1 - 2
hours and put goods back in. Leave minced meat
cabinets for 4 to 5 hours to adjust to the interior
temperature required (due to the strict statutory limits
of the temperature range for storing minced meat) and
then put the goods back in.