Dampers; Cooling Circuit Xwps; Drop Catcher - Dantherm DanX 2/4 XKS Installation, Commissioning And Service Manual

5. MAINTENANCE

5.8 Dampers

The following steps should be taken to maintain the dampers of the unit. Please refer to
section 4. Commissioning to see which dampers you have in your unit and what functions
they have.
Check that the damper setting is in accordance with the current operation mode (every
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6 month).
Check that the damper louvers can rotate when the damper motor is running and that
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they close/open completely (every 6 month).
Check the fixing of the motor/damper shaft. To get access to the recirculation damper
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of the XWPS you have to remove the outer cabinet panel and the inner air guiding
plate (every 12 month).
If necessary, clean the damper louvers either dry or wet (every 12 month).
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Check the rubber gaskets for damage (every 12 month).
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5.9 Cooling circuit XWPS

The following steps should be taken to maintain the evaporator and condenser coil of the
cooling circuit:
Check the coils for dust or dirt. If necessary, clean the aluminium fins by a soft brush
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or a vacuum cleaner. To get full access to the evaporator you may have to remove the
drop catcher (see 5.10)
Straighten any bent slats using appropriate tools.
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Check that the frost sensor is properly fixed in the evaporator coil.
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The following steps should be taken to check the cooling circuit:
Close all inspection doors and start up the unit. Wait for a few minutes and check the
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LP/HP gauge. The HP gauge should show between 35-50 °C and the LP gauge about
0-10°C, depending on the running and outside conditions.
Keep the unit running, open the inspection door by the receiver and check if there is
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enough refrigerant in the receiver and if the sight glass of the refrigerant circuit is free
of bubbles.
If you are in doubt about the condition of the cooling circuit, stop the compressor at once to
avoid damage and call a cooling technician or the Dantherm service.

5.10 Drop catcher

The following steps should be taken to maintain the drop catcher:
To get access to the drop catcher, remove the outer cabinet panel and the inner air
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guiding plate. Then slide out the drop catcher.
Check for dirt and damage. Dirt can be removed by carefully washing the drop
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catchers.
Check the sliding rails for dirt. If necessary, clean them and reinstall the drop catchers.
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