Decommissioning; Recommissioning; Faults In Operation; Maintenance - AHT ATHEN Serie Manual De Instrucciones

AHT Cooling Systems GmbH

Decommissioning

The decommissioning must only be performed by
trained operating staff or qualified staff.
Decommissioning of the device.
Contact with live parts may cause
electric shock.
►Only trained staff may turn off the
device.
►Switch off the device and secure it
against restarting.
Steps for decommissioning for the operating
staff:
1. Move the goods to another device with the same
product temperature class.
2. Switch off the cooling function (see Chapter 4.2).
Prolonged decommissioning:
Perform steps for decommissioning (see → above).
Perform basic cleaning (see →10.2.1).
Leave the cover open.
NOTE
Material damage with prolonged decommissioning.
•
►Do not expose the device to direct heat radiation.
►Do not place anything in or on the device.
►Store the device only in its operating position.

Recommissioning

See commissioning → Chapter 8

Faults in operation

Display by alarms:
There are different types of alarms to indicate faults
during operation:
Display operating element:
Mechanical controller
optional red warning lamp
Electrical controller (see → Chapter:4.2.2/4.2.3):
- Fault code and buzzer (optional)
flashing red point
External warning system (optional):
The plug connection for connecting to the warning
system is located on the back of the device. For
technical data, see → Chapter 2.2
If a fault occurs, contact pair 3 and 5 closes and
contact pair 3 and 6 opens.
NOTE
Material damage and property damage in case of
•
alarm indication by fault code/buzzer, warning lamp or
by a warning system.
►Move the goods to another device with the same
product temperature class.
►Contact the maintenance service immediately (see
→ Chapter 10.5).
Additional remote monitoring possibilities can be
obtained from the maintenance service.
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WARNING
see → Chapter:4.2.1):
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10

Maintenance

Monitoring tasks by operating staff:
Monitoring tasks
Check for
- flawless state of the devices
- foreign objects in the goods
compartment
- closed glass cover
Damaged glass cover/glass element
Breakage of stored glass
containers (cooling devices)
Temperature display
Correct loading of goods
Check for ice formation on the
inside container
Checking for contamination
Contamination of the device
Food waste and packaging waste
Floor (around the device)
Puddle formation in front of/under
the device (condensation)
Devices with (AD)
function:
Condensation water
WARNING
Devices of type R-290: Electrostatic
discharge and sparking with flammable
refrigerant. Sparks can ignite the leaking
refrigerant when the refrigerant circuit is
damaged/not sealed. Risk of fire.
►To remove condensation and for cleaning,
use a slightly damp cloth or sponge.
►Do not use dry cloths or sponges to wipe
dry (risk of electrostatic charging and
sparking).
►Do not operate any electrical devices (e.g.
wet vacuum cleaners) inside the refrigerator
compartment that do not comply with the
manufacturer's recommended design, unless
they have an explosion protection mark (see
→ 1.2).

Defrosting

Responsibility:
company/operating staff
For devices without (AD)
defrosting must always be carried out, see →10.1.1.
Devices with (AD) function defrost automatically at
regular intervals (see → Chapter 3.1). In addition, with
high ice formation in the inside container, a semi-
automatic defrosting (see →Chapter 4.2.2.4/ 4.2.3.4)
can be started by the operating company. For devices
with operating mode cooling ("+", "S"), the automatic
defrosting can be set to inactive ex-factory.
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4.1
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9.1
10.1
10.2.1
10.2.1
3.1
10.1.1