Inspection Of Cable; Leakage Check Of R32 Refrigerant - Beko BEMPE 090 Manual Del Usuario

16 Maintenance notice
7. Checks to electrical devices:
Repair and maintenance to electrical components shall include initial safety checks and component
inspection procedures. If a fault exists that could compromise safety, then no electrical supply
shall be connected to the circuit until it is satisfactorily dealt with. If the fault cannot be corrected
immediately but it is necessary to continue operation, an adequate temporary solution shall be
used. This shall be reported to the owner of the equipment so all parties are advised.
Initial safety checks shall include:
• That capacitors are discharged: this shall be done in a safe manner to avoid possibility of
sparking.
• That no live electrical components and wiring are exposed while charging, recovering or purging
the system.
• Keep continuity of earthing.

16.4 Inspection of cable

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.

16.5 Leakage check of R32 refrigerant

Note: Check the leakage of the refrigerant in an environment where there is no
C
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.
42 / 172 EN
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