ARDESTO ACM-12P-R290-PF1, Руководство пользователя и инструкция по установке

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113
EN
excessive pressure, vibration, sharp edges or any other
adverse environmental effects. The check shall also take
into account the effects of aging or continual vibration
from 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.
11. Leak detection methods
The following leak detection methods are deemed
acceptable for systems containing flammable refrigerants.
Electronic leak detectors shall be used to detect flamma-
ble 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 de-
tector is not a potential source of ignition and is suitable
for the refrigerant used. Leak detection equipment shall
be set at a percentage of the LFL of the refrigerant and
shall be calibrated to the refrigerant employed and the
appropriate percentage of gas (25 %maximum) is con-
firmed. 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 refrig-
erant and corrode the copper pipe-work. If a leak is sus-
pected, 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,
or isolated (by means of shut off valves) in a part of the
system remote from the leak. Oxygen free nitrogen (OFN)
shall then be purged through the system both before and
during the brazing process.
12. Removal and evacuation
When breaking into the refrigerant circuit to make repairs
or for any other purpose conventional procedures shall be