106
9. MAINTENANCE [How to Service the Air Compressor]
The smoothing capacitor and the cooling fan of
the controller and the fan inverter need periodical
inspection and replacement.
(
9.2
)
The smoothing capacitor needs replacement every 6
years as standard. However the life of smoothing
capacitor varies depending on energized time and
ambient temperature of controller and fan inverter (see
the left figure). If the ambient temperature of the air
compressor is high through the year or if the current is
exceeded during operation, it needs to be replaced more
frequently.
And immediately replace it if leakage or expansion is
detected.
Contact the local HITACHI distributor/master dealer or
representative office for the replacement.
122 (50)
113 (45)
104 (40)
86 (30)
5
6
8
20
Ambient temp.
℉
(
℃
)
Condenser
life (years)
[Condenser life curve: reference value]
19
Operating Life of Controller and Fan Inverter
(The controller is equipped only with
. The fan inverter is equipped only with
Air-Cooled
.)
