RKI Instruments Beacon 110 Rig Monitor - Manual (Page 35)

Beacon 110 Rig Monitor Operator’s Manual 30
7. Turn the Audio Select switch so that the selection arrow is pointing to the desired number.
8. Place the cover over the base and push in and down in order to reinstall the cover. Make sure
that the cover is sealed to the base by the gasket.
9. Screw the captive screw at the bottom front of the strobe/horn back in.
Replacing Components of the Rig Monitor
This section describes how to replace the fuses, the H
2
S sensor, and the entire detector assembly. In
most cases, it is not necessary to replace the entire detector assembly.
Replacing the Fuses
The Rig Monitor has two replaceable DC fuses.
NOTE: To replace other components of the Beacon 110 Rig Monitor, contact RKI Instruments,
Inc. for further information.
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 above the 12 VDC In Terminal Strip. The DC 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 36 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. 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 Rig Monitor
completes its warm-up sequence and enters normal operation.
10. Close and secure the housing door.
Replacing the Plug-In H
2
S Sensor
CAUTION: The sensor contains electrolyte which is a dilute acid. Do not disassemble the sensor
when replacing it with a new one. If sensor electrolyte comes in contact with your
skin, wash affected area thoroughly with soap and water.
1. Turn off the Rig Monitor.
2. Disconnect the battery clamps from the + and - terminals of the 12 VDC battery.
3. Unscrew the calibration cup/splash guard from the detector housing cap.
4. Unscrew the detector housing cap from the detector housing body. Make sure not to lose the