Rae RAEGuard 2 PID - Maintenance; Troubleshooting

RAEGuard 2 PID User’s Guide
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12 Maintenance
As a guide, it is recommended to regularly “bump test” a RAEGuard
2 PID unit with a known percentage gas. Also, periodically check the
sensor inlet and outlet to make sure they are clean and unobstructed.
13 Troubleshooting
Note: Before attempting to diagnose measurement problems, perform
zero and span calibrations.
Message
Reason and Solution
Reason: Instrument over range.
Solution: Confirm the level of gas concentration.
Check sensor.
Reason: Pump failure.
Solution: Make sure that the air path is not blocked.
Check pump.
Reason: Lamp failure.
Solution: Check Sensor.
Reason: Sensor drift.
Solution: Check sensor and/or perform zero and
span calibration.
Reason: Calibration fails.
Solution: Check calibration operation.
Change sensor or contact RAE Systems
Customer Service.
Reason: Humidity sensor failure.
Solution: Check the humidity in the area.
Make sure that the air path is not blocked.
Contact RAE Systems Customer Service.