Beko BEVPA 090, Руководство пользователя, Страница: 47 / 220

Split type wall mounted air-conditioner / Owner’s Manual 47 / 220 EN
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.
11.4 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.
11.5 Leakage check of R32 refrigerant
C 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.
11.6 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.
11 Maintenance Notice