DeVilbiss Ex-Cell E7540 Operation Manual page 21

PROBLEM
Air leaks in air
tank or at air
tank welds
Air leaks
between head
and valve plate
Pressure
reading on
the regulated
pressure gauge
(if equipped)
drops when
an accessory
is used
Air leak from
safety valve
Compressor is
not supplying
enough air
to operate
accessories
Restricted air
intake
CAUSE
Defective air tank.
Leaking seal.
It is normal for "some"
pressure drop to occur.
Possible defect in safety
valve.
Prolonged excessive use
of air.
Compressor is not large
enough for air requirement.
Hole in hose.
Check valve restricted.
Air leaks.
Restricted air intake filter.
Loose belt.
Dirty air filter.
Air tank must be replaced. Do not
repair the leak.
weld or otherwise modify air tank
or it will weaken. The tank can
rupture or explode.
Contact a Trained Service Technician.
If there is an excessive amount of
pressure drop when the accessory is
used, adjust the regulator as instructed
in the Operation section.
NOTE: Adjust the regulated pressure
under flow conditions (while accessory
is being used).
Operate safety valve manually by
pulling on ring. If valve still leaks, it
should be replaced.
Decrease amount of air usage.
Check the accessory air requirement.
If it is higher than the SCFM or pressure
supplied by your air compressor, you
need a larger compressor.
Check and replace if required.
Remove and clean, or replace.
Tighten fittings.
Clean or replace air intake filter. Do
not operate the air compressor with
the filter removed. Refer to the "Air
Filter" paragraph in the Maintenance
section.
Check belt tension, see Adjusting Belt
Tension in the Maintenance section.
Clean or replace. See Air Filter
paragraph
section.
21-ENG
CORRECTION
Risk of Bursting.
Do not drill into,
in the Maintenance
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