Honeywell UMC800 - Manual (Page 80)

Maintenance
Replacement Procedures
72 UMC800 Controller Installation and User Guide Release F
4/01
Replacing the power supply fuse
The power supply input circuit is protected with a fuse. Use the steps in the table below to replace the fuse
on the power supply module.
Step Action
1 Remove power from the controller.
2 Locate the fuse holder located on the power supply module. See Figure 36.
3 Using a slotted screwdriver, remove the fuseholder cap by rotating it counterclockwise.
4 Replace the fuse with the proper size and type.
• For 100-240 V supply: Size 5x20, F 3.15 A Time Delay 250 V, or equivalent.
• For 24 V supply: Size 5x20, 6.3 A Slow Blow, or equivalent.
5 Replace the cap by pressing in and rotating it clockwise with the screwdriver.
_
100 - 24 0 V ~
50 / 60 Hz
100 VA MAX.
F 3,15 A T
250V
L1
L2 / N
CPU Battery
Location
Fuse Holder
POWER
LoBAT
FORCE
RUN
DIS
PL
A
Y
BAT
CO
M
M
B
CO
M
M
A
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e
pl
ac
e ba
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ry
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it h
Ta
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T
L
51
01
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ly
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osi
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Power
Supply
CPU
Module
Figure 36 Power supply fuse and CPU battery location