Abnormal Solution And Refrigerant Levels; Table 53 - Abnormal Solution And Refrigerant Levels - York EX Series Installation, Operation & Maintenance Instructions Manual

FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
ABNORMAL SOLUTION AND REFRIGERANT
LEVELS
Causes of abnormal levels of solution and refrigerant
and countermeasures against them are shown below If
the level of the solution or refrigerant is abnormal, cor-
rect it according to the following procedure.
TABLE 53 - ABNORMAL SOLUTION AND
REFRIGERANT LEVELS
NORMAL ABNORMAL
SECTION
CONDITION
Refrigerant
Overflow
(G101)
Refrigerant
Tank
(G102)
Solution
Tank
(G103)
JOHNSON CONTROLS
CAUSE
CONDITION
High temperature of
cooling water inlet
temperature.
Low temperature of
chilled water outlet
temperature.
Cooling water tube
fouling
Purge trouble
Air leakage
Cooling water inlet
temperature is low.
Setpoint error of
automatic start/stop
switch.
Purging is in
sufficient.
Adjusting valve
opening setting error.
Solution is
crystallized.
SECTION 8 – TROUBLESHOOTING
COUNTERMEASURE
• See if the cooling water supply rate is conformed to
the specification. (Check the flow meter, discharge
pressure of the cooling water pump, current, etc.) If the
flow rate is insufficient, check the opening ratio of the
flow controller valve and check the strainer for clogging.
• Check the capacity of the cooling tower.
• See Purge Procedure on page 130.
• Check the capacity of the vacuum pump.
• Check the purge unit for trouble.
• Purge non-condensable gas from the absorption chiller-
heater.
• If partial-load operation is continued for a long period,
non-condensable gas tends to stay in the absorber.
In this case, purge directly from the low pressure side
(absorber), See Purge Procedure on page 130 .
• Check cooling water inlet temperature
• Check the setpoint.
See Purge Procedure on page 130.
Contact your local Johnson Controls Service Center.
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