172-65168MA-04 (SA3) 1 Oct 2021
9
Troubleshooting
When disassembling or removing the product, wait until the internal
pressure equals atmospheric pressure and the surface of the product
has cooled to room temperature. Disassembling or removing the
product when it is hot or under pressure may lead to discharge of fluids,
causing burns, other injuries or damage.
CAUTION
When the product fails to operate properly, use the following table to locate the
cause and remedy.
Problem
Cause
Remedy
No air discharged or
discharge is poor
Air is not reaching the vent
because the liquid in the piping is
not being displaced by air
Correct the inlet piping
The valve seat is clogged
Clean the valve seat
The inlet or outlet piping is
clogged
Clean the piping
The operating pressure exceeds
the rated maximum operating
pressure
Replace the air vent with a
model of suitable operating
pressure
Liquid leaks when
the valve is closed
The valve seat is clogged with dirt
or scale or is damaged
Clean the valve seat or replace it
with a new valve seat
Improper installation
Correct the installation
Valve does not close
and liquid spurts out
Specific gravity of the liquid is not
suitable for this product
Select a product with suitable
specifications for the operating
conditions
How to Clean the Valve Seat
Remove the vinyl tube and turn the tip of the valve seat left and right.
Remove the snap ring and clean the valve orifice and the valve area with a soft cloth.
(The valve is sealed off internally, so there is no need to close the inlet valve.)
