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SECTION 8 – TROUBLESHOOTING
INSUFFICIENT VACUUM LEVELS
Causes of insufficient vacuum level of purging line and countermeasures against them.
TABLE 47 - INSUFFICIENT VACUUM LEVELS
ITEM
1
2
Deterioration of vacuum pump oil.
Wrong operation of purging line switching when
3
vacuum pump capacity was checked.
4
Deterioration of vacuum pump belt.
5
Leakage in purge pipe line.
6
Blocked or broken purge solenoid valves.
7
Check valve does not open.
8
Valve V21 left open by mistake.
164
CAUSE
Purge pump trouble.
COUNTERMEASURE
Contact your local Johnson Controls Service Office.
Replace the vacuum pump oil.
• See Purge Procedure on page 132.
• Confirm that the valves are either open or closed.
Contact your local Johnson Controls Service Office.
• See Purge Procedure on page 132.
• Confirm that the valves are either open or closed.
FORM 155.31-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
JOHNSON CONTROLS
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Table of Contents
Troubleshooting
