84
Measure Completed Comments
aS
Leak detection
The following leak detection processes are suitable for systems
with flammable refrigerants:
Leak detection with electronic refrigerant detectors:
■
Electronic refrigerant detectors may not have the required sensi-
tivity or may need to be calibrated to the relevant range. Carry
out the calibration in refrigerant-free surroundings.
■
The refrigerant detector must be suitable for the R32 refrigerant
to be detected.
■
The refrigerant detector must not contain any potential ignition
sources.
■
Calibrate the refrigerant detector to the refrigerant used. Set the
response threshold to < 3 g/a, suitable for R32.
Leak detection with liquid leak detectors:
■
Liquid leak detectors are suitable for use with most refrigerants.
!
Please note
Liquid leak detectors containing chlorine may react with
the refrigerant. This could result in corrosion.
Do not use liquid leak detectors that contain chlorine.
Measures to take if a leak in the refrigerant circuit occurs:
■
Immediately extinguish all open flames in the vicinity of the heat
pump.
■
Do not solder leaks in the refrigerant circuit.
aD
Extracting and evacuating refrigerant
Evacuating refrigerant: See chapter "Evacuating the refrigerant
lines and indoor unit"
aF
Topping up the refrigerant
Carry out work in accordance with chapter "Charging the refriger-
ant lines and indoor unit".
aG
Shutdown
Carry out the work in accordance with chapter "Final decommis-
sioning and disposal".
aH
Identification (labelling the heat pump)
If the heat pump has been taken out of use, affix a label to the
heat pump in a clearly visible position containing the following in-
formation with date and signature:
■
Outdoor unit works with flammable refrigerant R32.
■
System has been taken out of use.
■
Refrigerant has been extracted.
■
Outdoor unit may contain residual flammable refrigerant.
aJ
Recovering the refrigerant and compressor oil
Recovering compressor oil: See chapter "Disposing of the com-
pressor and compressor oil"
Overview of electrical components
■
Indoor unit:
See page 38 onwards.
■
Outdoor unit:
See page 48 onwards.
Maintenance
Checklist for maintenance work (cont.)
6199585
Maintenance
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