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Chapter 6. MAINTENANCE AND TROUBLESHOOTING
How to replace the fuse
CAUTION
When touching internal parts, touch a grounded metal part to discharge
static electricity from the body. Otherwise, static electricity may damage
components.
Before replacing the fuse, be sure to turn the power OFF. Failure to do so
might cause electric shock.
Be sure to use a fuse having an electrical rating of 250V, and 0.5A for
replacement on the 24Vdc power supply type, and a fuse having an electrical
rating of 250V, and 2.0A for replacement on the AC power supply type. Use of
a non-rated fuse prevents the safety circuit from functioning properly.
z
Needed items
Phillips screwdriver
Fuse: 24Vdc power supply type:
Made by Cooper Bussmann U K Ltd: Model No. S504 500mA
(250V, 0.5A)
Made by Littelfuse: Model No. 218.500 (250V, 0.5A)
Standard
IEC127
Fuse blow-
out speed
Time-lag
Rated
voltage
250V
Rated
current
0.5A
AC power supply type:
Made by Toyo Fuse: Model No. MF51NR250V2.0A (250V, 2.0A)
