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| 887 Challenger Series
www.natvac.com | 800.253.5500
TROUBLESHOOTING
NVE 887
Vacuum Pump
Pump overheats
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• No oil in pump
• Oil adjustment set too lean
• RPM too fast
• Prolonged operation at excessive vacuum or pressure levels,
• Pump is dirty
• Ballast filter is clogged or dirty.
• Inlet filter is clogged or dirty.
Pump uses too much oil
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• Oil pump set too rich
• Leaving pump under vacuum between jobs
• Product running through pump
Pump doesn’t turn _______________________________________________
• Broken vane or bearing
• Pump is frozen
• Problem in the drive train