Introduction
1-6
1.6 Maintenance
1.6.1 Replacing Fuses
If displays do not appear when it is connected to power, the problem may be a
defective ac power fuse. Replace the defective fuse as specified below.
a. Disconnect the indicator by pressing the rear switch and unplug the equipment from the
electric outlet.
b. Disconnect the power cord from the rear side of the equipment.
c. Stainless steel version: Extract the fuse by pulling out the small tab of the fuseholder,
which is in the rear side of the equipment.
ABS version: Extract the fuse by unscrewing the fuseholder, which is in the rear side of
the equipement.
d. Change the damaged fuse for a new one according to the specifications in 1.1.5.
e. Close the fuseholder and connect the equipment.
If the equipment is configured as IP65, replace the fuse as specified below.
a. Disconnect the indicator from the power plug.
b. Remove the rear cover by unscrewing the screws.
c. Remove the fuse protecting cover, which is in the power source.
d. Remove the fuse by pulling it out carefully.
e. Change the damaged fuse with a new one according to the specifications shown in 1.1.5,
and reinstall the protecting cover.
f. Close the equipment and connect it.
WARNING- SHOCK HAZARD
Due to the risk of electrical shock, the cover must be
removed only by qualified personnel.
1.6.2 Cleaning
a. Disconnect the indicator by pressing the rear switch and unplug the equipment from the
electric outlet.
b. Clean the indicator with a clean and dry cloth.
CAUTION
• Never use alcohol or solvents to clean the indicator.
These chemical products could damage it.
• Make sure that water does not enter the indicator. It
could damage electronic components.
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