20
6.
Troubleshooting
Failure
Possible causes
Countermeasures
No operation
The product is not used at a speed within the
range of the stable speed adjustable range.
Use the product within the specified speed
adjustable range shown in the catalog or
operation manual.
Increase in the internal leakage due to damage
to the internal seal with foreign matter, drainage,
etc.
Replace the vane shaft and stopper seals with
new ones.
(The whole product needs to be replaced as a
rule.)
Sealing failure of the internal seal or increase in
the internal resistance due to operation outside
of
the
operating
temperature(Including
freezing).
Operate the product within the operating
temperature range.
(For sealing failure, replace the vane shaft and
stopper seals with new ones.)
Malfunction of the peripheral equipment.
a. The speed controller is not adjusted properly.
b. Operation failure of the solenoid valve.
c. Air is not supplied sufficiently due to clogging
of the air filter.
d. Air pressure is reduced due to operation
failure of the regulator.
Use the countermeasure peripherals.
(Including circuit problems)
Broken shaft
Load energy is too large.
a. Load weight is too large.
b. Operating speed is too fast.
c. Radius of rotation is too large.
Replace the shaft.
a. Use the product with the energy within the
allowable range.
b. Absorb the impact energy.
Mount the cushion and external stopper
correctly.
External force other than load is applied to the
shaft.
Replace the shaft.
Avoid excessive external force being applied to
the shaft.
Eccentric load due to misalignment.
Replace the shaft with a new one.
Operation without the
specified rotation angle
Joint of the rotating shaft or internal stopper is
damaged.
Replace the joint or replace the whole product
with a new one.
Damage to the
bearing
Excessive load
(Loads in thrust and radial directions are too
large.)
Replace the bearing with a new one.
Operate with the radial load and thrust load
which is within the allowable range.
Eccentric load due to misalignment.
Replace the bearing for correct alignment.
Too much vibration is applied to the product.
Replace the bearing to reduce the vibration.
External leakage
Sealing failure with the O-ring due to damage to
the bearing or bending of the shaft.
Replace the bearing or the shaft with a new
one.
Reduce the external force.
Damage to the O-rings due to foreign matter
and/or drainage.
Replace the O-rings with new ones.
Prevent foreign matter or drainage from
entering the product.
Internal leakage
Damage to the seals due to foreign matter
or drainage.
Replace the vane shaft and stopper seals.
(The whole product needs to be replaced
as a rule.)
Prevent any foreign matter and drainage
from entering the product.
Sealing failure due to operation outside of
the operating temperature range.
Replace the vane shaft and stopper seals
with new ones.
(Replace the whole product as a rule,
especially for the product used at a high
temperature.)
Operate the product within the operating
temperature range.
