Wattcher Monitor/Alarm Model 3170B
18
Figure
10
Fuses
230V Fuse Drawer
115V Fuse Drawer with
Shorting Bar
Fuse, 5x20mm SLO-BLO, T315mA
Fuse, 5x20mm SLO-BLO, T315mA
Shorting Bar
Replacing Fuse for External DC Input Voltage
1.
Remove the five 4-40 screws from the cover top.
2.
Remove the six 4-40 screws from the cover sides.
Note:
Three screws from each side.
3.
Remove the cover from lower housing to expose internal circuit.
4.
Locate fuse on PC board assembly near the AC input receptacle.
5.
Remove the fuse.
6.
Replace with 3 AG type fast-acting rated at .5 amp.
7.
Replace cover and screws.
Figure
11
Replacing Fuse for External DC Input Voltage
WARNING
Disconnect this unit from AC power source before any disassembly for cleaning, repair
or replacement procedures. The potential for electrical shock exists.
4-40x3/16
Phillips Pan
Head Screws
Cover
4-40x3/16
Phillips Pan
Head Screws
Fuse 3AG Fast Acting .5 A
