Handleiding
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-Continuously flush or purge with inert gas when using flame to open circuit; and
-Open the circuit.
9) 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 there no live electrical components and wiring are
e
xposed while charging, recovering or purging the system; that there is continuity
of earth bonding.
7. Sealed electrical components shall be replaced.
8. Intrinsically safe components must be replaced.
9. Cabling
Check that cabling will not be subject to wear, corrosion, excessive pressure,
sources such as compressors or fans.
10. Detection of flammable refrigerants
Under no circumstances shall potential sources of ignition be used in the
searching for or detection of refrigerant leaks. A halide torch (or any other
detector using a naked flame) shall not be used.
The following leak detection methods are deemed acceptable for systems
containing flammable refrigerants. Electronic leak detectors shall be used to
detect flammable refrigerants, but the sensitivity may not be adequate, or may
need re-calibration. (Detection equipment shall be calibrated in a refrigerant-free
area.) Ensure that the detector is not a potential source of ignition and is suitable
for the refrigerant used. Leak detection equipment shall be set at a percentage
of th
e LFL of the refrigerant and shall be calibrated to the refrigerant employed
and the appropriate percentage of gas (25% maximum) is confirmed. Leak
detection fluids are suitable for use with most refrigerants but the use of
detergents containing chlorine shall be avoided as the chlorine may react with
the refrigerant and corrode the copper pipe-work. If a leak is suspected, all
naked flames shall be removed/extinguished. If a leakage of refrigerant is found
which requires brazing, all of the refrigerant shall be recovered from the system,
leak. Removal of refrigerant shall be according to Removal and evacuation.
11. Removal and evacuation
When breaking into the refrigerant circuit to make repairs—or for any other
purpose - conventional procedures shall be used. However, for flammable
refrigerants it is important that best practice be followed, since flammability is a
consideration. The following procedure shall be adhered to:
-Safely remove refrigerant following local and national regulations;
-Evacuate;
-Purge the circuit with inert gas (optional for A2L);
-Evacuate (optional for A2L);
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Productinformatie
| Merk | Midea |
| Model | MAW08V1YWT-S |
| Categorie | Airco |
| Taal | Nederlands |
| Grootte | 4788 MB |
