Bacharach MGS 400 User Manual

Also see for MGS-400: User manual

Contents

Bacharach MGS 400 User Manual Manual pdf 39 page image

1100-2294 Rev 1 38b. Manual: the LED will blink green-orange, green-orange-orange, green-orange-orange-orange, etc. until calibration is complete. To abort, hold MAG#2 for >5-seconds, turn off gas flow and remove the calibration adapter. If calibration issuccessful (LED blinks green-orange-red), proceed to Step 5. If calibration isunsuccessful (LED blinks orange @ 2 Hz), tap MAG#2 to discard the calibrationattempt.5. Turn off gas flow from calibration gas and remove the calibration adapter.6. Allow sensor to recover / stabilize before the instrument returns to normal operation(green LED).5.2.5 System Bump TestIMPORTANT: The manufacturer of this product requires that a bump test orcalibration be performed following installation to verify instrument functionality.A bump test is a live test of the system to verify that the detector responds to gas and allconnected alarm devices, BMS, etc. are operating accordingly. It is recommended that allinvolved persons are informed about the test and certain alarms might have to be inhibited(e.g., shutdown valves, notification of authorities, etc.).1. Connect adapter and gas cylinder according to the instructions in the GeneralCalibration Procedure.2. If desired, disable / silence external annunciators (e.g., shutdown valves, notification ofauthorities, etc.):a. MGS-400 App: Home Tab  Calibrate  Bump  toggle TAKE OFFLINE todisable communications to external devices.b. Manual: Inform building personnel of test so that external devices can bedisabled / silenced.3. Apply a sufficiently high concentration of the target gas to trigger alarms, but NOT purerefrigerant or hydrocarbons (e.g., do not use a butane lighter).4. Once thresholds have been exceeded, relays should activate, digital outputs shouldtransmit the gas concentration and:a. MGS-400 App: gas concentration should be displayed, the instrument statusshould be “LOW ALARM” or “HIGH ALARM” and alarms states should be “ON.”b. Manual: LED status should display “LOW ALARM” or “HIGH ALARM.”5. Turn off gas flow and remove the calibration adapter.6. Allow sensor to recover / stabilize before the instrument returns to normal operation(green LED).