Tesla TA36FFLL-1232IA User Manual Download

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ENG

Inspection of Cable

Leakage check of R32 refrigerant

Removal and Vacuum Pumping

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.

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.

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.

specification. At all times the manufacturer’s maintenance and service guidelines shall be followed. If in doubt,
consult the manufacturer’s technical department for assistance. The following checks shall be applied to
installations using flammable refrigerants:

• The charge size is in accordance with the room size within which the refrigerant containing parts are installed.
• The ventilation machinery and outlets are operating adequately and are not obstructed.
• If an indirect refrigerating circuit is being used, the secondary circuit shall be checked for the presence of

refrigerant.

• Refrigeration pipe or components are installed in a position where they are unlikely to be exposed to any

substance which may corrode refrigerant containing components, unless the components are constructed of
materials which are inherently resistant to being corroded or are suitably protected against being so corroded.

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.

Tesla TA36FFLL-1232IA, User Manual

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