AHT Cooling Systems GmbH
51
10 Maintenance
Regular monitoring tasks by operating staff:
Monitoring tasks
Frequency
see
→
Chapter
Internal temperature
several times
daily
4.1
Correct closing of night
blind (device-specific)
daily
3.2
Correct position of air intake
grille
daily
3
Breakage of glass
doors/glass elements
(device-specific)
continuously
10.1.2
1.3
Correct loading of goods
continuously
9.1
Checking for closed glass
doors after goods removal by
customer
(device-specific)
continuously
1.3
9
“ROLL-IN” devices:
Checking of the hinges
several
times daily
9
Checking for
contamination
- Contamination of the
device
- Food waste and
packaging waste
daily
10.1.1
Breakage of storing glass
containers/packaging glass
daily
9
Glass doors/glass elements,
mirror surfaces (device-
specific)
daily
10.1.2
Floor (around the device)
daily
10.1.1
Puddle formation in front
of/under
the device (condensation)
daily
3.1
Floor tub
Drain and drain sieve
monthly 10.1.1
Air conduits
► Requires early main
cleaning
at least
¼-yearly
10.1.3
10.1 Cleaning
Reasons for regular and thorough cleaning (deep
cleaning/main cleaning):
- Assurance of the required hygiene.
►
Always keep the goods interior in a clean
condition.
- Lowest possible energy consumption.
- Maintenance of trouble-free operation.
- Extension of the life of the device.
WARNING
Damage to the electrical system and
refrigerant circuit by using steam and
high-pressure cleaners. Contact with
live parts may cause electric shock.
Devices of type R-290: The
refrigerant can escape and create an
explosive gas/air mixture. Risk of fire
due to sparks or overloading.
► For basic cleaning, do not use
steam and high-pressure cleaners
(
→
see Chapters 1.6.1 and 1.6.2.1).
► For the main clea
ning, follow the
special cleaning manual.
WARNING
Devices of type R-290: Electrostatic
discharge and sparking in 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
unless they not comply with the
manufacturer’s recommended
designs with an explosion protection
mark (see
→
1.2).
CAUTION
Sharp edges of the device.
Heavy
device parts can cause cutting injury
to the hands. Hands can be jammed.
►
For cleaning, wear protective
gloves.
CAUTION
Entering the device areas.
Cutting injuries in the case of
material breakage.
Danger of falling. Impact hazard due
to the risk of falling goods.
►
Do not climb onto or into the
device during cleaning.
10.1.1
Basic cleaning
Responsibility:
Operating staff
Cleaning interval:
Basic cleaning must be performed as required (see
→
Chapter 10 “Checking for contamination”).
Time of cleaning
At any time
Cleaning agent:
- Clean water (neutral pH, low water hardness)
- Slightly alkaline cleaning agent (e.g. neutral soap
and water) for heavier contamination.
