MVR-300™ Refrigerant Gas Detector
P/N: 6203-9000 Version 1
23
SECTION 5.
MAINTENANCE
5.1
Maintenance Intervals
Interval
Function
During
Commissioning
Check calibration.
Check LEDs for proper operation.*
Check for proper buzzer and relay operation.*
Check signal transmission to the BMS/BAS (central controller) if connected.*
Every 6 Months
Inspection by trained service personnel.
Check LEDs for proper operation.*
Check for proper buzzer and relay operation.*
Check signal transmission to the BMS/BAS (central controller) if connected.*
As Required
Replace sensor module(s) (see page 30).
*
These can be activated via Modbus commands.
5.2
Adjustments
5.2.1
Introduction
Adjustment of the detector must be performed at regular intervals as required by national standards or
regulations (e.g., EN 378, ASHRAE 15, BREEAM, etc.).
WARNING
Breathing Hazard:
Calibration gas must not be inhaled! See appropriate Safety Data
Sheets. Calibration gas should be vented into a fume hood or to the outside of the
building.
WARNING
Zero First, Then Span:
For proper operation, never adjust the span
before
completing
a zero adjustment. Performing these operations out of order will cause faulty calibration.
WARNING
Bacharach recommends calibrating detectors within the application-specific condition
and with target gas. This method of zeroing the detector in the application environment
and performing a target gas calibration is more accurate. A surrogate gas calibration may
only be performed as an alternative if a target gas calibration is not possible.
NOTICE
The sensor should be fully warmed-up (at least 2 hours, preferably 24 hours).
NOTICE
When entering the functions for zero or span adjustment, the detector will automatically
enter OFFLINE mode, and will remain OFFLINE until either the OFFLINE mode is
canceled by tapping the respective magnetic switch, or the OFFLINE mode times out
within 6 minutes (typical) after the adjustment has ended.
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