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Note: Items marked (*) are done by IWAKI.
Large pulsation
(Beyond speci-
fied range)
Trouble
●
Too high discharge pres-
sure.
●
Air pressure adjusting valve
at intake or exhaust side is
clogged.
●
Worn valve seat.
●
Too low supply air pressure
to dampener.
●
Broken bellows inside
dampener
Cause
Countermeasure
○
Check filter and replace.
○
Disassemble and clean. (*)
○
Replace valve seat. (*)
○
Keep the supply air pressure
to dampener.
○
Replace bellows unit. (*)
●
Broken bellows.
(Air is mixed in discharged
liquid.)
○
Replace bellows unit. (*)
●
Stud bolts are not tightened
enough.
●
Deterioration or deforma-
tion of O-ring.
○
Tighten.
○
Replace O-ring(*)
●
Air pressure adjusting valve
at exhaust side is clogged.
○
Disassemble and clean. (*)
Inspection & check items
a. Filter blinding or drying
b. If filter is wetted enough.
a. Check air filter.
a. Refer to item Air Piping on
Installation section.
Air is mixed in
the liquid.
a. If specified air pressure is
added to dampener.
b. If the dampener is not used
beyond specified pressure
Liquid leaks.
a. If specified air pressure is
added to dampener.
b. If the dampener is not used
beyond specified pressure.
c. If residual pressure is
released.
Air leaks
(Cylinder)
a. Refer to Periodic Inspec-
tion on Maintenance and
Inspection.
Air leaks
(Air exhausting
part)
a. Check air filter.
1. Troubleshooting
