York YHAU-CE-JE Series, Установка, эксплуатация и обслуживание, Страница: 90 / 136

JOHNSON CONTROLS
90
FORM 155.33-ICOM2.EN.GB
ISSUE DATE: 12/4/2017
SECTION 7 – MAINTENANCE
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
a long time, 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. Use the
pressure gauge of the high temperature generator.
It should be less than -0.1 MPaG.
5. Check the waste exhaust gas supply.
6. Check the waste hot water supply.
7. Press the Refrigerant Pump
Stop button.
If the checks show no problems, 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 procedure shown in Purge Procedure on
page 90 to purge non-condensable gas directly
from the absorber.
PURGE PROCEDURE
Non-condensable gas must be purged from the chiller-
heater to maintain its performance and prevent dete-
rioration of its internal parts. This chiller-heater has an
automatic purge system.
Even if the automatic purge mode is used during nor-
mal operation, perform the manual operation for the
purging tank and absorber periodically. For the purging
period, see Table 19 on page 99
.