RKI Instruments Beacon 110 - Manual (Page 42)

38 Beacon 110 Operator’s Manual
Replacing the Fuses
The Beacon 110 has two replaceable AC fuses.
NOTE: To replace other components of the Beacon 110, contact RKI Instruments, Inc.
for further information.
1. Turn off or unplug all incoming power to the Beacon 110.
2. Open the housing door of the Beacon 110, then place the power switch in the OFF
position.
3. Locate the vertical fuse holders above the AC In Terminal Strip. The AC fuses are
labelled F1 and F2 on the main PCB silkscreen.
4. Use a flat-blade screwdriver to rotate the applicable fuse holder 1/4 turn
counterclockwise. The fuse holder releases from the socket.
5. Remove the fuse holder from the socket, then remove the fuse from the fuse holder.
CAUTION: Verify that the replacement fuse is the same type and rating as the fuse you
are replacing. See the “Parts List” on page 41 for correct fuse.
6. Install the appropriate replacement fuse in the fuse holder, then place the fuse holder
in the socket.
7. Push the fuse holder into the socket, then turn the holder 1/4 turn clockwise to secure
it in the socket.
8. Plug in or turn on all incoming power to the Beacon 110.
9. Place the Beacon 110’s power switch in the ON position, then verify that the Beacon
110 completes its warm-up sequence and enters normal operation.
10. Close and secure the housing door.
Preventive Maintenance
Preventive maintenance of the Beacon 110 consists of daily, monthly, and quarterly
procedures to ensure that the detector head is operating properly. See the detector head
operator’s manual for preventive maintenance procedures that apply to the detector head
supplied with your Beacon 110.