Repairs To The Refrigeration Circuit; Removal Of Refrigerant - Dimplex La 4060Cp Montage- Und Betriebsanleitung

LA 4060CP
!
NOTICE
Malfunction due to incorrect software
▪ Only software that is authorised and approved by the manufacturer can be installed on the heat pump control
system.
Actions before repair
Before starting repair work, carry out the following steps:
• Externally disconnect the power supply to the device. After disconnecting, wait 5 minutes for all components to be
de-energised.
• The earth connection must remain guaranteed.
• Do not damage the refrigeration circuit.
• Before and when opening the device, check the working area and the interior of the device for the presence of
R290 using the refrigerant detector.
• For repair work during which a release of refrigerant is expected, use mobile ventilation (e.g. fan with explosion
protection).
• Before starting work, check that the paint protector on the relevant component is in its original condition. Paint
protectors that have to be removed for repair work must be re-attached when the work is complete.
• For soldering and welding work, an appropriate fire extinguisher must be located in the immediate vicinity.
• If refrigerant is added, there must be a CO
Repair
Perform the necessary repair to the heat pump.
Use a Schrader valve quick opener to prevent excess leakages of refrigerant when connecting and sealing off hoses to
the refrigeration circuit.
Actions after repair
• Check that the wiring is not subjected to any wear, corrosion, tension, vibration, sharp edges and other
unfavourable environmental influences. The check should also take into account the effects of ageing.
• When replacing the high pressure switch, perform a leakage tightness test with nitrogen to ensure correct
functioning.

10.1 Repairs to the refrigeration circuit

!
NOTICE
Damage due to freezing
When emptying and filling the refrigerant, damage can occur due to freezing.
▪ Ensure a continuous flow through the liquefier.

10.1.1 Removal of refrigerant

Actions before removal
Ideally, the refrigerant should be extracted using suitable equipment and collected in approved recycling bottles.
Personnel must be trained in handling recycling bottles for R290. Handling recycling bottles as well as their return/
disposal must comply with the safety regulations. Observe the information provided by the return system operator.
If extraction including return is not possible, as an alternative the refrigerant can be discharged using a hose into a safe
zone, where there are no ignition sources, windows, doors, ventilation openings, light wells, openings for sewers or
similar.
In addition, use a suitable fan (Ex zone II) at the outlet point to ensure sufficient dilution of the refrigerant. To achieve the
fastest possible dilution of the refrigerant in the environment, raise the outlet point as high as possible rather than
positioning it at ground level.
The zone around the outlet point must be cordoned off and indicated by appropriate warning notices. There must not be
any ignition sources, windows, doors, ventilation openings, light wells, openings for sewers or property boundaries in the
flow direction of the fan used to dilute the refrigerant.
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or powder extinguisher in the immediate vicinity.
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452173.66.03c FD 0509
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