- ,_-. -.-.“*-*, .,._ < _ 4. . _. ._i .,_..___ ___I_-. I
When a capacitor is used for the period specified as life, it may
deteriorate suddenly.
It is necessary to check all smoothing capacitors yearly (several months
if life ‘is about to expire) .
.
Check the followings:
0 Case
.
. Side walls and bottom for deformation
0 Sealing plate
: For unusual warp and cracks
@ Pressure relief valve :
For excessive valve expansion and
operation
@ Appearance, crack in case, discoloration and leakage:
When capacitance of a capacitor is reduced below 85% of rated
capacitance, replace that capacitor.
To measure capacitance, use an
instrument available commercially.
(3) Relays
To prevent miscontact, it is necessary to replace relays in accordance
with the acumulated switching times.
For approximate interver parts replacement, refer to Table 6.
Other parts , having a relatively short service life, such as lamps. Replace
when deemed necessary as periodic inspection result will reveal.
Table 6 Inverter replacement parts
Part uame
Cooling fan
Smoothing capacitor
5 years
Replace (determine
after checking)
Relays
Determine after checking
Standard interval 1
Description
I
2 to 3 years
Replace (determine
after checking)
-39-
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