Table 54 - Insufficient Vacuum Levels - York EX Series Installation, Operation & Maintenance Instructions Manual

SECTION 8 – TROUBLESHOOTING

TABLE 54 - INSUFFICIENT VACUUM LEVELS

Causes of insufficient vacuum level of the purge line
and countermeasure against it
ITEM
1 Purge pump trouble
2 Deterioration of vacuum pump oil.
3 Wrong operation of purging line switching
when the vacuum pump capacity was
checked
4 Deterioration of the vacuum pump belt.
5
Leakage in purge pipe line.
6
Blocked or dysfunctional purge solenoid
valves
7 Check valve does not open.
8 Valve V21 mistakenly open
172
CAUSE COUNTERMEASURE
Contact your local Johnson Controls Service Office.
Replace the vacuum pump oil.
• See Purge Procedure on page 130
• Confirm that the valve is open or closed.
Contact your local Johnson Controls Service Office.
• See Purge Procedure on page 130
• Confirm that the valve is open or closed.
FORM 155.32-ICOM1.EN.GB
ISSUE DATE: 10/13/2017
JOHNSON CONTROLS