RKI Instruments Beacon 200 Rig Monitor, LEL/LEL - Manual (Page 46)

41 • Beacon 200 Rig Monitor Operator’s Manual
box. Note the position of the color-coded leads as you remove them.
5. Unscrew the calibration cup from the detector.
6. Unscrew the detector from the junction box hub.
7. Guide the detector leads of the replacement detector through the
junction box hub then screw the mounting threads of the detector into
the hub.
8. Connect the detector leads to the terminal block the same way the old
detector was wired. See Figure 7 to verify the connections are correct.
9. Screw the calibration cup onto the new detector.
10.Reinstall the junction box cover.
11.Connect the battery clamps to the + and - terminals of the 12 VDC
battery.
12.Place the Rig Monitor’s power switch in the ON position, then verify
that the PILOT light is on.
CAUTION: Allow the replacement detector to warm up for 5 minutes
before you continue with the next step.
13.Calibrate the replacement detector as described in the Calibration
section of this manual.
Preventive Maintenance
This section describes a preventive maintenance schedule to ensure the
optimum performance of the LEL detectors. It includes daily, monthly, and
quarterly procedures.
Daily
Verify a display reading of 0 %LEL at the controller. Investigate significant
changes in the display reading.
Monthly
This procedure describes a test to verify that the LEL detectors respond
properly to their target gas. It describes a test using a fixed flow regulator
with an on/off knob. RKI Instruments, Inc. recommends using a 0.5 LPM
(liters per minute) fixed flow regulator.