Bacharach MVR-300 User Manual

Also see for MVR-300: Installation guide

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Bacharach MVR-300 User Manual Manual pdf 25 page image

MVR-300™ Refrigerant Gas DetectorP/N: 6203-9000 Version 1 255.2.3 Zero AdjustmentWARNINGAmbient air can be used to zero the sensor instead of synthetic air only if the area isknown to be free of the target gas or any gas to which the sensor may be cross-sensitive. In this case, no cylinder or calibration adapter is needed for the zeroadjustment.Step Description (Continued from General Procedure)9. Tap and hold (●) for more than 5 seconds. The LED will blink green-green-red to indicate thedetector is ready.10. Apply synthetic air (or use ambient air per the warning above).11. Tap (●) within 30 seconds to confirm start of calibration. Otherwise the detector will time-outand return to normal operation.12. As the process progresses, the LED will blink green-red, green-red-red, green-red-red-red, etc.• To abort calibration, tap and hold (●) for >5 seconds, turn off gas flow and remove thecalibration adapter. The detector will return to normal operation.• If calibration is successful (green LED), skip to step 15.• If calibration is unsuccessful (orange LED blinks @ 2 Hz), then tap (●) to discard thecalibration attempt, and see Section 5.3 on page 26 for troubleshooting.13. Turn off gas flow from synthetic air.14. Replace synthetic air tank with calibration gas tank in preparation for span adjustment.5.2.4 Span AdjustmentStep Description (Continued from Zero Adjustment)15. Tap and hold (●●) for >5 seconds. The LED will blink green-green-orange when the detector isready.16. Apply span gas in the concentration listed on the cal gas concentration label (beneath thedetector’s cover plate). This may require the temporary removal of the bezel and cover plate tosee the label.17. Tap (●●) within 30 seconds to confirm initiation of the calibration. Otherwise the detector willtime-out and return to normal operation.18. As the calibration process progresses, the LED will blink green-orange, green-orange-orange,green-orange-orange-orange, etc.• To abort calibration, tap and hold (●●) for >5 seconds, turn off gas flow and remove thecalibration adapter. The detector will return to normal operation.• If calibration is successful, the LED will blink green-orange-red indicating ‘offline’. Turnoff gas flow and remove the calibration adapter. After 6 minutes the detector will returnto normal operation.• If calibration is unsuccessful (orange LED blinks @ 2 Hz), then tap (●●) to discard thecalibration attempt, and see Section 5.3 on page 26 for troubleshooting. Turn off gasflow and remove the calibration adapter. After 6 minutes the detector will return tonormal operation.www. .com information@itm.com1.800.561.8187