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WA900-3EO
COMMISSIONING
NITROGEN LEAK TESTING
General Instructions
Legislation on handling of refrigerants
requires leak testing of the system following
any dismantling of major components.
The procedure to do this is as follows:-
1. Connect a cylinder of dry nitrogen to
the compressor valve on either of the
suction or liquid line connections.
Note: It is important that the
nitrogen charging set is supplied
with a shut-o valve pressure
reducing valve, cylinder pressure
gauge, line pressure gauge and
bleed valve.
2. Set the cylinder reducing valve to 1035
kPa (150 psig)
3. Open the nitrogen cylinder shut-o
valve and charge the plant up to a test
pressure of 1035 kPa (150 psig).
4. Close the cylinder shut-o valve.
5. All joints should be vibrated by tapping
carefully with a rubber or soft hide-faced
mallet.
6. Test for leaks with a soap and water
solution.
COMMISSIONING
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