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Troubleshooting (Manifold)
Check the failure seen on the manifold
Failure
referring
to
appropriate measure.
Check the part leaking air.
1. Any of the OUT, Ｒ Ｅ Ｔ Ｕ Ｒ Ｎ and leak
detecting port has a leakage.
2. Between the manifold blocks has a
leakage.
Leakage
3. Between the port block and manifold block
has a leakage.
The permanent deformation compressed of the VCC series O-ring is large due to the property of the material
(special FKM). Therefore, leakage may occur if the O-ring is not replaced when disassembling and
reassembling the product.
Please replace the O-ring with a new one when disassembling and reassembling the parts.
Troubleshooting (Fitting)
Check the failure seen on the fitting referring
Failure
to the following, and take appropriate
measure.
1. The joint part between the tube and fitting
has a leakage.
Leakage
2. Between the fitting and manifold has a
leakage.
the
following,
and
take
Cause
Troubleshooting (valve): Refer to 1
through 4 for leakage.
1) Insufficient tightening or
looseness of manifold tie-rod
Insufficient tightening of the manifold
tie-rod
lost
the
sealing
between the manifold blocks and
allowed the leakage to happen there.
2)The permanent deformation
compressed of O-ring (material:
special FKM)
The permanent deformation
compressed is large due to the
characteristics of the O-ring, so the
compression is reduced, leading to
leakage of fluid from the between the
manifold.
1) Insufficient tightening or
looseness of port block mounting
screw
Insufficient tightening of the port block
mounting
screw
lost
the
capability between the port block and
manifold
block
and
allowed
leakage to happen there.
2)The permanent deformation
compressed of O-ring (material:
special FKM)
The permanent deformation
compressed is large due to the
characteristics of the O-ring, so the
compression is reduced, leading to
leakage of fluid from the between the
port block.
Cause
1)
Insufficient
tightening
looseness of union nut
Insufficient tightening of the fitting
union nut caused the sealing failure
between the fitting and tube and
leakage between them.
1)
Insufficient
tightening
looseness of fitting
Insufficient tightening of the fitting lost
the sealing capability between the
manifold
blocks
and
allowed
leakage to happen there.
26
Remedy
Tighten the hexagon socket head
bolt for the tie-rod at the specified
torque.
capability
(Specified torque P20:
3.5+/-0.5Nm)
- Replace the O-ring with new one.
(Maintenance pats list P20)
Tighten
the
combination screw for the port
block at the specified torque.
(Specified torque P20:
sealing
the
- Replace the O-ring with new one.
(Maintenance pats list P21)
Remedy
or
Tighten the union nut 1.5 to 2 turns
further after manual tightening.
(Tighten 1.5 to 2 turns further after
manual tightening P6 and specific
product precautions P14)
or
Tighten the fitting at the specified
torque.
(Specified torque P14:
the
round
head
1.2+/-0.2Nm)
10+/-1Nm)
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