Maintenance Notice
74
USER'S MANUAL
Check the cable for wear, corrosion, overvoltage, vibration and check if there
are sharp edges and other adverse effects in the surrounding environment.
During the inspection, the impact of aging or the continuous vibration of the
compressor and the fan on it should be taken into consideration.
R32 soğutucu akışkanının sızıntı kontrolü
Inspection of Cable
Note :
Check the leakage of the refrigerant in an environment where there
is no potential ignition source. No halogen probe (or any other detector that
uses an open flame) should be used.
Leak detection method :
For systems with refrigerant R32, electronic leak detection instrument is
available to detect and leak detection should not be conducted in
environment with refrigerant. Make sure the leak detector will not
become a potential source of ignition, and is applicable to the measured
refrigerant. Leak detector shall be set for the minimum ignitable fuel
concentration (percentage) of the refrigerant. Calibrate and adjust to
proper gas concentration (no more than 25%) with the used refrigerant.
The fluid used in leak detection is applicable to most refrigerants.
But do not use chloride solvents to prevent the reaction between chlorine
and refrigerants and the corrosion of copper pipeline.
If you suspect a leak, then remove all the fire from the scene or put
out the fire.
If the location of the leak needs to be welded, then all refrigerants need to
be recovered, or, isolate all refrigerants away from the leak site
(using cut-off valve). Before and during the welding, use OFN to purify the
entire system.
Removal and Vacuum Pumping
1.
Make sure there is no ignited fire source near the outlet of the vacuum
pump and the ventilation is well.
2.
Allow the maintenance and other operations of the refrigeration circuit
should be carried out according to the general procedure, but the
following best operations that the flammability is already taken into
consideration are the key. You should follow the following procedures:
•
Remove the refrigerant.
•
Decontaminate the pipeline by inert gases.
•
Evacuation.
•
Decontaminate the pipeline by inert gases again.
•
Cut or weld the pipeline.
3.
The refrigerant should be returned to the appropriate storage tank. The
system should be blown with oxygen free nitrogen to ensure safety. This
process may need to be repeated for several times. This operation shall
not be carried out using compressed air or oxygen.
