Specifications

*Piping should be as direct as
possible. If a large number of
fittings are used, larger I.D. pipe
should be installed to help
overcome excessive pressure drop.
Figure 2 – Air/Filter Regulator
Installation
7. How often should the
filter/regulator be drained of
accumulated moisture and dirt?
It depends largely on the level of
system use, the type of filtration in
the air system, and the amount of
humidity in the air.
For average use, once-a-day
drainage is probably sufficient.
For heavily-used systems, or in
high humidity, drainage should
occur several times daily.
Some units drain automatically
when moisture reaches a
predetermined level.
8. What steps should be taken if
moisture passes through the
filter/regulator?
Since moisture in the spray gun
atomization air will ruin a paint job,
it must be removed from the air
supply.
When the compressed air
temperature is above its dew point
temperature, oil and water vapor
will not condense out into solid
particles.
Check the following:
a) Drain transformer, air receiver
and air line of accumulated
moisture.
b) Be sure the transformer is
located at least 25 feet from the
air source.
c) Main air line should not run
adjacent to steam or hot water
piping.
d) Compressor air intake should
not be located near steam
outlets or other moisture-
producing areas.
e) Outlet on the air receiver should
be near the top of the tank.
f) Check for damaged cylinder
head or leaking head gasket, if
the air compressor is water
cooled.
g) Intake air should be as cool as
possible.
9. What causes excessive pres-
sure drop on the main line gauge
of the filter/regulator?
a) The compressor is too small
to deliver the required air
volume and pressure for all
tools in use.
b) The compressor is not
functioning properly.
c) There is leakage in the air
line or fittings.
d) Valves are partially opened.
e) The air line, or piping system,
is too small for the volume
of air required. Refer to Table 1,
Page 20.
5. Air Control Equipment (Cont’d)
21