Doc. no. AMX-OMU0058-C
-16-
6. Troubleshooting
Failure
Possible causes
Countermeasure
Category
Error
Flow rate
As pressure drop is
large, fluid does not
flow.
Element is clogged.
Replace the element.
Air
Leakage
Air leaks out from the
gap between the bowl
and body.
O-ring of the bowl is damaged.
Replace the O-ring.
O-ring is included in the
replacement element.
Bolt is loosened.
Tighten the bolt.
Air leakage still occurs even after
tightening the bolt, please contact
your SMC representative.
Air is leaking out of the
bowl.
Bowl is broken.
Please contact your SMC
representative.
Drainage or air
continues blowing out
of the drain exhaust.
Inlet air pressure is below
0.1MPa.
Use the product within the
specified range (0.1MPa or more).
The drain exhaust is assembled
while inclined.
Install the drain exhaust so that it
will face vertically downward.
Foreign matter is caught at the
main valve of the auto drain.
Remove the dust.
Main valve of the auto drain is
broken.
Replace the auto drain.
Drain piping is long, or I.D. of
the piping is small.
(Back pressure is applied.)
Tube I.D. should be
φ
6.5 (
φ
1/4
inch) or more and its length should
be within 5m (200 inch).
Riser pipework should be avoided.
Drain exhaust and bowl seat
were broken.
Replace the auto drain.
Accumulated drainage
is not discharged from
the auto drain.
Auto drain is mounted inclined,
which causes the float not to be
operated.
Check the mounting orientation, and
if the auto drain is inclined, correct
the orientation.
Viscous substances left in the
drain such as solid foreign
matter and oils interrupt the float
operation.
Clean inside of the bowl.
If the auto drain does not operate
even after cleaning, please replace
it.
Operatio
n ability
Others
Abnormal amount of
drainage is coming out
of the outlet piping.
When an auto drain is used,
drain exhaust failure occurs.
Replace the auto drain.
When drainage is exhausted
manually, the liquid level is too
high.
Exhaust the drainage and replace
the element.
