Minebea Intec CSD-918 Series, Руководство по эксплуатации

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18 Maintenance
This chapter describes maintenance of the CSD-918.
18.1 Lifetime of used parts
The parts used in the instrument will have lifetime. It may difer depending on the
application method and environmental conditions, the lifetime of each shall be as follows:
Name of Part Application Rough standard of lifetime
EEPROM Record of set data Write to EEPROM, one million times
Electrolytic capacitor For smoothing swit-
ching power supply
Approx. 10 years
Liquid crystal display Back light Approx. 40 000 hours (typically) at 25 °C
and surface luminance is about 50 % of ini-
tial one.
Battery Back up of RAM Approx. 10 years
EEPROM
When writing is made to EEPROM more than the time of lifetime, you can’t write to the
data anymore, so exchange shall be required.
Electrolytic capacitor
It may be inluenced largely by some applied conditions such as environmental
temperature and so on.
The lifetime is for about ten years when continuously driving in the air-conditioning
normal use environment.
Liquid crystal display
The surface luminance becomes 50 % of the initial one after approx. 40 000 hours
(typically) at 25 °C.
Battery
It may be inluenced largely by some applied condition such as environmental
temperature and so on.
The lifetime shall be for approx. 10 years in room temperature at 20 °C.
18.2 Replacing the fuse
If the fuse of CSD-918 blows, remove the top cover to replace it.
WARNING
Damage from overheating.
The use of repaired fuses and bypassing the fuse holder is prohibited.
Incorrect fuse installation or inappropriate fuse capacity will result in malfunction.
Before replacing the fuse, be sure to turn OFF the power to CSD-918.
Only the time lag Fuse (2.5A) is permissible.
1. Turn of the power supply to the unit
18 Maintenance Weight Controller CSD-918
Minebea Intec EN-185