PR036484w REV 07/20 5 of 7
Troubleshooting
Vacuum Problems
Leakage, contamination, and unusual out-gassing are
the general causes of problems associated with poor
vacuum. To operate at maximum efficiency, a system
must be thoroughly clean. If the system is completely
clean and free from leaks, and unwarranted vacuum
problems still exist, the pump should be checked. A
simple criterion for the condition of the pump is the
determination of its maximum vacuum capability.
This can be accomplished by blocking the intake and
reading the vacuum level on the gauge.
Pressure Problems
Leakage and contamination are the general causes of
problems associated with poor pressure. To operate
at maximum efficiency, a system must be thoroughly
clean. If the system is completely clean and free from
leaks, and unwarranted pressure problems still exist,
the pump/compressor should be checked by
a service technician.
Low
Flow
Low
Pressure
Unit Will
Not Start
Motor
Overheats
Loud
Unit
Possible Cause Corrective Action
● ● ●
Damaged valves Replace flapper valves
● ● ●
Debris in valves Remove debris and check for valve damage
● ● ●
Worn diaphragm Replace diaphragm and/or liner
● ● ●
Loose head screws Tighten head screws
● ● ●
Bent motor shaft Replace entire unit
●
Loose fittings Tighten fittings
●
Insufficient ventilation in enclosure Increase air circulation in enclosure
● ●
Loose rod clamping screw Apply Loctite
®
242 and re-tighten
● ● ●
Damaged O-rings Replace O-rings
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