221
Calibration, Inspection, Repair, and Cleaning
11
Maintenance and Service
11.1 Calibration, Inspection, Repair, and Cleaning
Before requesting instrument repair or inspection, please read "Before returning for repair" (p. 223)
and "11.3 Error Massage and Error Display" (p. 230).
Calibrations
IMPORTANT
Periodic calibration is necessary in order to ensure that the instrument provides correct measure-
ment results of the specied accuracy.
The calibration frequency varies depending on the status of the instrument or installation environ-
ment. We recommend that the calibration frequency is determined in accordance with the status of
the instrument or installation environment and that you request that calibration be performed peri-
odically.
Inspection and Repair
WARNING
Customers are not allowed to modify, disassemble, or repair the instrument. Do-
ing so may cause re, electric shock, or injury.
Replaceable Parts and Operating Lifetimes
The characteristics of some of the parts used in the product may deteriorate with extended use. To
ensure the product can be used over the long term, it is recommended to replace these parts on a
periodic basis. When replacing parts, please contact your Hioki distributor. The service life of parts
varies with the operating environment and frequency of use. Parts are not guaranteed to operate
throughout the recommended replacement cycle.
Part
Recommended
replacement cycle
Remarks/conditions
Electrolytic Capacitors Approx. 5 years A PCB on which a part concerned is mounted must be
replaced. The board on which the parts in question are
mounted should be replaced.
LCD backlight
(Brightness reduced by half)
Approx. 5 years If used for 24 hours per day at 25°C
Fan motor Approx. 10 years When used for 24 hours per day
Backup battery Approx. 10 years When turning on the instrument, if the date or time is
not substantially accurate, the battery should be re-
placed. Replace if the time and date are signicantly off
when the product is turned on.
11 Maintenance and Service
Maintenance and Service
11