YOKOGAWA EXAxt ZR22G, User Manual, Page: 179 / 211

<11. Inspection and Maintenance>
11-8
IM 11M12A01-02E 16th Edition : Mar. 19, 2020-00
11.2 Inspection and Maintenance of the
Converter
The converter does not require routine inspection and maintenance. If the converter does not
work properly, in most cases it probably comes from problems or other causes.
A dirty touchpanel should be wiped off with a soft dry cloth.
11.2.1 Replacing Fuses
The converter incorporates a fuse, as indicated in Figure 11.5. If the fuse blows out, replace it in
the following procedure.
CAUTION
• If a replaced fuse blows out immediately, there may be a problem in the circuit.
Go over the circuit completely to find out why the fuse has blown.
• This fuse is for protecting the main power supply circuit and does not provide overcurrent
protection for the heater temperature control circuit. For overcurrent protection circuitry, refer
to Section 12.1.2.2, Heater Temperature Failure.
F11.5E.ai
Fuse
Figure 11.5 Location of Fuse in the Converter
To replace the fuse, follow these steps:
(1) Turn off the power to the converter for safe replacement.
(2) Remove the fuse from its holder. With the appropriate flat-blade screwdriver that just fits the
holder cap slot (Figure 11.6), turn the fuse holder cap 90° counterclockwise.
By doing so, you can remove the fuse together with the cap.