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Air Dryer
4 Maintenanc
e
4
Maintenance
4 - 1
Daily Inspection
Check following points during usual operations. If you find some problems, immediately stop the operation and refer to
“Chapter 5 Troubleshooting” as soon as possible.
•
There is no air leakage
•
The running lamp is lighting during operation
•
Drain is being discharged from drain tube
•
The pointer of the evaporation thermometer indicates in the green zone when it is running with pressurized air
supply.
•
The pointer of the evaporated thermometer indicates about 3~10
o
C lower than that of ambient temperature when
the product is suspended with no pressurized air supply.
•
There is no abnormal sound or vibration coming up from the product.
•
There are no abnormal smell or smoke coming up from the product.
4 - 2
Periodical Maintenance
4-2-1
Cleaning of ventilation grille (suction grille)
Clean dust and other foreign particles from the ventilation area with vacuum cleaner or air blow nozzle once a
month.
Caution
During air blowing, put on protective glass and mask to prevent dusts from coming into
hroat or eyes.
t
4-2-2
Service parts
It is recommended to replace the following parts regularly. The interval alues shown in this operation
manual depend on the operating conditions (ambient temperature, installation environment, etc.),
so
that
they are for referens.
•
Table
1.
List of parts to be replaced regularly
Description
Recommended replacement period *Note}
Pressure switch
One Million times.
Fan motor
20,000 hours
Magnetic Contactor, Magnetic Switch
One Million times.
*Note
)
If it is mounted by option ”T” (With terminal block for power supply , run , alarm signal and remote
operation) or special order.
4-2-3
Cleaning of the case assembly
Remove the dust deposited in the auto drain case assembly every month. Use neutral detergent for cleaning. If the
degree of dirt is heavy and operating failure still continues even after cleaning, replace the product. Also, shorten
cleaning interval from the next time.
•
Part No. of case assembly
Part No.
Name
Quantity
Applicable Model
AD48
Case Assembly
1
IDU22E, IDU37E
IDU55E, IDU75E
4 - 1