RKI Instruments M2 Rig Monitor - Manual (Page 30)

25 M2 Rig Monitor Operator’s Manual
Chapter 6: Maintenance
Overview
This chapter describes procedures for performing preventive maintenance,
troubleshooting, calibrating the M2 Rig Monitor, and replacing field replaceable parts.
Preventive Maintenance
This section describes a recommended preventive maintenance schedule to ensure the
optimum performance of the M2 Rig Monitor. It includes daily, monthly, and quarterly
procedures.
Daily
Verify a display reading of 0 ppm. Investigate significant changes in the reading.
Monthly
This procedure describes a test to verify that the Rig Monitor responds properly to the
target gas.
NOTE: Performing a response test on the M2 Rig Monitor may cause alarms. If you do
not want external alarms to actuate, disable any external alarms during the
response test to avoid unwanted external alarm indications.
NOTE: The following procedure assumes the use of a calibration kit which includes a
calibration gas cylinder, a fixed flow regulator with an on/off knob, and a short
piece of sample tubing to connect the regulator to the calibration cup.
1. While in normal operation, press and hold the UP/YES button for 5 seconds and press
the UP/YES button again when asked if you would like to enter Calibration Mode.
2. Connect the calibration kit sample tubing to the calibration cup/splash guard hose
barb.
3. Connect the fixed flow regulator to the calibration cup/splash guard using the sample
tubing.
4. Screw the calibration gas cylinder onto the fixed flow regulator.
5. Turn the regulator knob counterclockwise to open the regulator.
6. Allow calibration gas to flow for one minute.
7. Verify that the display reading is within ± 20% of the gas concentration.
NOTE: If the reading is not within ± 20% of the gas concentration, calibrate the M2 Rig
Monitor as described in “Calibration” on page 28.
8. Turn the regulator knob clockwise to close the regulator.
9. Unscrew the calibration gas cylinder from the fixed flow regulator and disconnect the