13
UTC Climate, Controls & Security
PROPRIETARY
62-61661-00 Rev B
29th maI 2013
Cleaning method for gauge hoses
To allow accurate reading and to reduce pollution in
the refrigeration circuit,
it’s necessary to clean the
gauge hoses before commissioning:
Refrigerant bottle is closed
Manifold gauge valves are closed except the
refrigerant bottle and the vacuum pump which
are opened.
Start the vacuum pump, wait 2 to 3 seconds
and close the pump
The connections are cleaned and ready for the
commissioning
This operation
can’t be done on 3 way service
gauges
Warning !
The evacuation has to be done with a vacuum
pump (
see page 15
) and not by purging with the
refigerant bottle.
PRESSURE CHECK: MANIFOLD GAUGES CLEANING
H.P
L.P
Refrigerant load
bottle closed
Activated vacuum
pump
Opened valve
Closed valve
CHECKS & SETTINGS
