RKI Instruments Beacon 200 Rig Monitor, LEL/LEL - Manual (Page 45)

Beacon 200 Rig Monitor Operator’s Manual • 40
Replacing Components of the
Rig Monitor
This section describes how to replace the fuses and the LEL detector.
Replacing the Fuses
1. Open the housing door of the Rig Monitor, then place the power switch
in the OFF position.
2. Disconnect the battery clamps from the + and - terminals of the 12 VDC
battery.
3. Locate the vertical fuse holders on either side of the power switch. The
DC fuses are labelled F2 and F3 and are on the right of the power
switch.
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.
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. Connect the battery clamps to the + and - terminals of the 12 VDC
battery.
9. Place the Rig Monitor’s power switch in the ON position, then verify that
the PILOT light is on.
10.Close and secure the housing door.
Replacing the LEL Detector
1. Open the housing door of the Rig Monitor, then place the power switch
in the OFF position.
2. Disconnect the battery clamps from the + and - terminals of the 12 VDC
battery.
3. Remove the LEL detector junction box cover.
4. Disconnect the detector leads from the terminal block in the junction