6. Replace gortex disc (if necessary) and gasket located in the
bottom of the cap with the new disc and gasket supplied with
the sensor; push the cap onto the sensor.
7. In a clockwise direction, screw the end cap retaining ring back
onto the sensor housing.
"
CAUTION
Do not over-tighten the sensor on the inlet fitting; otherwise,
damage to the sensor may result.
8. Re-apply power to the Ultima Gas Monitor.
9. Perform the INITIAL Calibration Procedure as outlined in the
Ultima Gas Monitor Calibrator or Ultima Gas Monitor
Controller instruction manual. This procedure differs slightly
from a standard calibration procedure. Use of the INITIAL
calibration procedure upon installation of a new sensor
ensures the Ultima Gas Monitor will perform a successful
calibration. Failure to do so may result in a CAL FAULT
reading (FIGURE 4-6).
It is recommended that all other maintenance be performed at an
MSA factory-authorized service center. See TABLE 4-1 for
troubleshooting guidelines.
Figure 4-6.
CAL FAULT Reading
Chapter 4, Maintenance
4-5
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