JOHNSON CONTROLS
86
FORM 155.35-ICOM2.EN.CE/GB (1018)
DATE: 10/30/2018
SECTION 7 – MAINTENANCE
PURGE VALVES
The chiller-heater is equipped with the purge valves
shown in
or operation of the
valves, see the
Performance Check Method of Vacuum
START THE CHILLER-HEATER AFTER IT HAS
BEEN STOPPED FOR A LONG PERIOD
When you start the chiller-heater after it has not run for
3 months, use the following procedure.
1. Check the insulation of the Control Center and
the electric system.
2. Check the operation of the Control Center and the
safety devices.
3. Check that the refrigerant blow valve V2 is closed.
4. Check the vacuum level in the machine using the
pressure gauge of the high temperature generator.
The vacuum level should be less than
-0.1 MPaG.
5. Check the waste exhaust gas supply.
6. Press the Refrigerant Pump
Stop
button.
If the checks are clear, start the chiller-heater.
Checks After Operation Starts
1. 10-15 minutes after the chiller-heater and the so-
lution pump start, check the level gauge of the re-
frigerant tank.
2. If the refrigerant level is within the level gauge,
press the Refrigerant Pump
Auto
button.
3. Observe the operation for a while. Check that the
refrigerant liquid level does not drop.
4. Use the Automatic Purge procedure shown in
tomatic Method to Purge Non-condensable Gas
to purge non-
condensable gas directly from the absorber.