9. Troubleshooting
Refer to [10. Replacement work procedure](P18 to 21) and 11. Disassembly Drawing](P22).
Category
Phenomenon
F
lo
w
r
a
te
As pressure
drop is large,
fluid does not
flow.
1. Clog of the element.
Replace the element.
P18 to 19
Air leakage
from between
the body and
fitting.
1. Breakage of joint seal.
Replace the bowl packing.
P18 to 19
Air leaks
between the
joint and the
bowl.
1. Breakage of the bowl seal.
Replace the bowl packing.
P20 to 21
Air leakage
from the bowl.
1. Bowl is damaged.
Replace the bowl assembly.
(If the solvent is considered to be
harmful, replacement to the metal bowl
is recommended)
P20 to 21
Air leaks from
the drain cock.
1. The foreign matter caught in the
valve of the drain cock.
Open the drain cock for a few seconds
for blowing.
P15 to 16
2. Breakage of the seating part of the
drain cock.
Replace the bowl assembly.
P20 to 21
1.
Low supply pressure.
Ensure that the ball valve of the
auto drain is opened.
P11 to 13
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.
P15 to 16
4.
Main valve of the auto drain is
broken.
Replace the bowl assembly.
P20 to 21
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 to 6
6.
Drain exhaust and bowl seat
were broken.
Replace the bowl assembly.
P20 to 21
Drain is not
discharging
when the drain
cock opens.
1. Blockage of outlet of the drain cock
due to solid foreign matter etc.
Replace the bowl assembly.
P20 to 21
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.
P15 to 16
P18 to 19
-17-
O
p
e
ra
b
ilit
y
Note) Fluorine grease is recommended when applying additional grease.
Failure
Possible causes
Countermeasures
Page for
reference
A
ir
le
a
k
s
Drainage or air
continues
blowing out of
the drain
discharge of
the float type
auto drain.