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IM 01E20C01-01E
10-1
10. MAINTENANCE
10. MAINTENANCE
Fuse holder
F1001.EPS
Figure 10.1.1 Fuse Assembly
10.1.2 Display Unit Replacement
10.1.2.1 Removing the Display Unit
(1) Turn off the power.
(2) Remove the cover.
(3) Hold the display unit with your hand and remove
the two mounting screws. Remove the connector
by lifting it upward, taking care not to damage it.
10.1 Components Replacement
WARNING
• Component replacement and the associated
operations must be carried out by expert
engineer or skilled personnel and not by
operators.
• Before opening the cover, it is important to
ensure that at least 10 minutes have passed
since the power was turned off. Furthermore,
opening of the cover must also be carried out
by a expert engineer or skilled personnel.
IMPORTANT
• As a rule, maintenance of this flowmeter should
be implemented in a maintenance service shop
where the necessary tools are provided.
• The amplifier assembly contains sensitive parts
that may be damaged by static electricity.
Excercise care so as not to directly touch the
electronic parts or circuit patterns on the board,
for example, by preventing static electrification
by using grounded wrist straps when handing
the assembly. Also take precautions such as
placing a removed amplifier assembly into a
bag with an antistatic coating.
10.1.1 Fuse Replacement
CAUTION
Be sure to turn off the power before performing
fuse replacement. Also be sure to use the spare
fuse that was supplied with the product, or ones
supplied by Yokogawa’s sales or service offices.
The fuse holder is located on the lower side of the
terminal block. Press this holder upwards and turn it
counterclockwise to remove it; then, replace the
holder’s fuse. Note that the fuse holder must be pressed
upwards and turned clockwise when it is being
reassembled. A spare fuse is secured by tape to the
inside of the case’s left side.