<Toc> <4. Troubleshooting and Maintenance>
4-7
IM 05D01D02-41E 4th Edition: May 31, 2006-00
2.
With the cover properly folded, fit its top and bottom holes to the protrusions of the
mounting brackets.
Fit the hole of the
terminal cover to the
protrusion on the
mounting bracket.
Attaching Terminal Cover
4.2.4 Replacing Parts with a Limited Service Life
The following UT350/UT320 parts have a limited service life.
The service life given in the table assume that the controller is used under normal operating
conditions.
Part
Aluminum electrolytic condenser
EEPROM
About 10 years (rated)
About 100,000 times of writings
Service life
Alarm output relays About 100,000 more ON-OFF operations or with resistance load
Control output relays About 100,000 more ON-OFF operations or with resistance load
If any of these parts, except control output relays, cause a controller failure due to deterio-
ration, contact your dealer for replacement at your cost.
SEE ALSO
“4.2.5 Replacing Control Output Relays,” for how to replace the control output relays.
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