Publicité
Installation, maintenance, repair, and decommissioning instructions
(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 the LFL of the
refrigerant and shall be calibrated to the refrigerant employed, confirming the
appropriate percentage of gas (25
Leak detection fluids are also suitable for use with most refrigerants. But
the use of detergents containing chlorine shall be avoided as the chlorine
can react with the refrigerant and corrode the copper pipe-work.
NOTE Examples of leak detection fluids include:
- Bubble method,
- Fluorescent method agents.
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, or isolated (using shut-off
valves) in a section of the system that is far from the leak according to
following instruction.
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 to follow best practices due to the
risk of flammability. The following procedure shall be adhered to:
Safely remove refrigerant following local and national regulations;
a)
Purge the circuit with inert gas;
b)
Evacuate;
c)
Purge with inert gas;
d)
Open the circuit by cutting or brazing.
e)
maximum).
%
30
Publicité
