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Refer to sections [10. How to Replace the Components] (P15-19) and [11. Disassembly Drawing] (P20-21).
Category
Failure
Air leaks from
the bonnet
exhaust port.
6. Back pressure exceeding the set
pressure is applied to the
downstream.
Revise the air circuit so that back
pressure does not exceed the set
pressure.
―
1. Loosened bonnet screws.
Fasten the bonnet.
P15
2. Diaphragm assembly is damaged. Replace the diaphragm assembly.
P15
1. Product without backflow function
is used.
Check the product number if backflow
function is equipped.
P8
2. Foreign matter caught in the
check valve seal leads to
malfunction. Or, the check valve
seal is stuck.
Clean the check valve seal and add
grease. If the condition is not
improved, replace the valve guide
assembly and check valve assembly.
P16
Problem
Possible cause
Countermeasure
Page for
reference
Air
le
ak
a
g
e
-14-
Air leaks from
between the
bonnet and the
body.
B
ack
w
a
rd
flo
w
Air does not
flow
backwards.
Note ) Fluorine grease is recommended when applying additional grease.