9. Troubleshooting
Refer to [10. How to Replace the Components](P16 and 17) and [11. Disassembly Drawing](P18).
Category
Failure
F
lo
w
r
a
te
As pressure drop
is large, fluid
does not flow.
1. Clog of the element.
Replace the element.
P16 and
17
Air leaks
between the
body and bowl.
1. Breakage of bowl seal.
Replace the bowl seal.
Apply grease to the bowl seal before
assembling it.
Note1)
P16
Air leakage from
the bowl.
1. Bowl is damaged.
Replace the bowl assembly.
P16
Air leakage from
the drain cock.
1. Foreign matter caught in the valve
of the drain cock.
Open the drain cock for a few seconds
for blowing.
P13
2. The drain cock and bowl seat are
damaged.
Replace the bowl assembly.
P16
1. Low supply pressure.
Check the minimum operating
pressure of the auto drain.
P7
P10 to 11
2. The product is not mounted
correctly.
Install the drain exhaust so that it will
face vertically downward.
-
3. Foreign matter is caught at the
main valve of the auto drain.
Remove the dust by manual drain
discharge.
P14
4. Main valve of the auto drain is
broken.
Replace the bowl assembly.
P16
5. Drain piping is long, or I.D. of the
piping is small. (Back pressure is
applied.)
Be sure to connect the appropriate
piping for drain.
P5
6. Drain exhaust and bowl seat are
broken.
Replace the bowl assembly.
P16
Drain is not
discharging
when the drain
cock opens.
1. Blockage of outlet of the drain
cock due to solid foreign matter
etc.
Wash the bowl interior to remove
foreign matters and oil content. If the
condition does not improve after
washing, replace the bowl assembly.
P6
P16
Too much drain
comes from the
piping of outlet
side.
1. Drain level reaches the bottom of
the element.
Open the drain cock for draining and
replace the element.
P13 to 14
P16 to 17
-15-
D
ra
in
a
g
e
Page for
reference
Note1) Fluorine grease is recommended when applying additional grease.
Problem
Countermeasure
Possible causes
Ai
r
le
a
k
a
g
e
Drainage or air
continues
blowing out of
the drain
discharge of the
float type auto
drain.
