Handleiding
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D-EIMHP01405-21_11EN 35/52
7 MAINTENANCE
Personnel working on the electrical or the refrigeration components must be authorized, trained and fully qualified.
Maintenance and repair requiring the assistance of other skilled personnel should be carried out under the supervision of
the person competent in the use of flammable refrigerants. Any person conducting servicing or maintenance on a
system, or associated parts of the equipment should be competent according to EN 13313.
Persons working on refrigerating systems with flammable refrigerants should have competence in safety aspects of
flammable refrigerant handling supported by evidence of appropriate training.
No person carrying out work in relation to a refrigerating system which involves exposing any pipe work shall use any
sources of ignition in such a manner that it may lead to the risk of fire or explosion. All possible ignition sources, including
cigarette smoking, should be kept sufficiently far away from the site of installation, repairing, removing and disposal,
during which refrigerant can possibly be released to the surrounding space. Prior to work taking place, the area around
the equipment is to be surveyed to make sure that there are no flammable hazards or ignition risks. “No Smoking” signs
shall be displayed.
Always protect the operating personnel with personal protective equipment appropriate for the tasks to be performed.
Common individual devices are: Helmet, goggles, gloves, caps, safety shoes. Additional individual and group protective
equipment should be adopted after an adequate analysis of the specific risks in the area of relevance, according to the
activities to be performed.
Electrical
components
Never work on electrical components until the machine’s main power supply has been cut off with the
main switch on the electrical panel. Wait 10 minutes after cutting off the machine’s power supply
before opening the electrical panel, to prevent the risk of high voltage due to firing of the capacitors.
Refrigeranting
system
The following precautions should be taken before working on the refrigerant circuit:
• obtain permit for hot work (if required).
• ensure that no flammable materials are stored in the work area and that no ignition sources are
present anywhere in the work area.
• ensure that suitable fire extinguishing equipment is available.
• ensure that the work area is properly ventilated before working on the refrigerant circuit or before
welding, brazing or soldering work.
• ensure that the leak detection equipment being used is no sparking, adequately sealed or
intrinsically safe.
• ensure that all maintenance staff have been instructed
• perform the following procedure before working on the refrigerant circuit:
• remove refrigerant (specifying residual pressure).
• purge circuit with inert gas (e.g. nitrogen).
• evacuate at a pressure of 0.3 bar (ass.) (Or 0.03 MPa);
• purge circuit with inert gas (e.g. nitrogen) again.
• open the circuit.
If compressors or compressor oils are to be removed, it should be ensured that it has been evacuated
to an acceptable level to ensure that there is no flammable refrigerant remaining within the lubricant.
Only refrigerant recovery equipment designed for use with flammable refrigerants should be
employed.
If the national rules or regulations permit the refrigerant to be drained, this should be done safely,
using a hose, for example, through which the refrigerant is discharged into the outside atmosphere in
a safe area. It should be ensured that an inflammable explosive refrigerant concentration cannot occur
near an ignition source or penetrate a building under any circumstance.
In the case of refrigerating systems with an indirect system, the heat transfer fluid should be checked
for the possible presence of refrigerant.
After any repair work, the safety devices, for example refrigerant detectors and mechanical ventilation
systems, should be checked and the results recorded.
It should be ensured that any missing or illegible label on components of the refrigerant circuit is
replaced.
Sources of ignition should not be used when searching for a refrigerant leak.
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Productinformatie
| Merk | Daikin |
| Model | EWAT016CZP |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 9712 MB |
