Model
6.5.1.2SENSOR MODULE INSTALLATION
•Module installation in conformance with this manual.
•Modules accessible for calibration.
•Wiring terminations clean and correct.
6.5.1.3MOISTURE TRAPS AND RAINSHIELDS
•Conduit seals and drains installed to avoid moisture build up in electronics enclosure. Water accumulation in sensor module enclosures is a major cause of damage and system failures - take precautions to seal electrical conduits and provide moisture traps and drains to avoid water damage
•
6.5.1.4STANDARD VOLTAGES
•DC Voltage to be applied to the sensor module must be between 10 VDC and 30 VDC.
6.5.2 INSPECTION AND TROUBLESHOOTING GUIDE
The inspection and troubleshooting guide can be used to step through the system
6.5.3IF MODULE DOES NOT RESPOND TO GAS
1.Repeat calibration procedure.
2.Remove the gas and wait for the timer to completely count down.
3.Apply 50 PPM and verify that the sensor sees 50 PPM gas after calibration.
4.If the sensor still does not see gas, power cycle the unit and repeat calibration.
6.5.4IF THE MODULE DISPLAYS “STARTING” FOR MORE THAN 1 HOUR
1.Make sure the sensor is placed in an ambient room temperature environment.
2.Power cycle the sensor.
3.Ensure that the sensor is not exposed to the gas of interest during
6.5.4.1IF THE MODULE DOES NOT DISPLAY THE CORRECT PPM
1.Power cycle the unit
2.Recalibrate the sensor.
6.5.4.2IF THE DISPLAY SHOWS ‘F’
1.Power down the unit
2.Open the enclosure and unplug the sensor assembly from the transmitter board.
3.Plug the sensor back into the transmitter board carefully and ensure a secure fit.
4.Power up the unit.
6.5.4.3IF THE DISPLAY SHOWS ‘C’
1.Complete calibration and exit to operating mode.
6.5.4.4IF THE DISPLAY SHOWS ‘S’
1.Check connections with Sentry Connections.
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