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Bacharach MGS-550 Quick Start Manual

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Dual Sensor Gas Detector
for Refrigerant, Toxic & Combustible Gas Detection
Fixed Gas Detection
P/N: 1100-0618 | April 2021 Revision 0
1. Introduction
The MGS-550 gas detector is designed for use in refrigeration
applications and may be used as a standalone device, connected
to the MGS-402 or MGS-408 controllers, or connected to a facility's
BMS / BAS. It enables compliance with refrigeration safety codes
(ASHRAE 15, EN 378, CSA-B52) and features audible and visual
alarms to alert personnel in the event of a leak.
2. Safety Instructions
DANGER: The MGS-550 is NOT certified or approved for operation
in oxygen-enriched atmospheres. Failure to comply may result in
severe injury or death.
WARNING: Use this product ONLY for the purposes and under
the conditions listed in MGS-550 User Manual. Failure to comply
may result in injury and / or damage to the product.
WARNING: The MGS-550 has not been designed to be intrinsically
safe for use in areas classified as being hazardous locations. For your
safety, DO NOT use in hazardous locations.
WARNING: Consult a qualified professional before connecting
the MGS-550 to devices not mentioned in this manual. Failure
to comply may result in injury and / or damage to the product.
CAUTION: Except for the maintenance detailed in this manual, this
product should ONLY be opened and / or serviced by authorized
personnel. Failure to comply may void the warranty.
Quick Start
Guide

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Summary of Contents for Bacharach MGS-550

  • Page 1 P/N: 1100-0618 | April 2021 Revision 0 1. Introduction The MGS-550 gas detector is designed for use in refrigeration applications and may be used as a standalone device, connected to the MGS-402 or MGS-408 controllers, or connected to a facility’s BMS / BAS.

  • Page 2: Installation

    WARNING: DO NOT allow the lid/sensor to hang from the ribbon IMPORTANT: The MGS-550 must be powered by either (a) a suitable cable. Failure to comply may result in damage to the product.
  • Page 3 4. Installation (Continued) STEP 3 | Installing One or Two Sensors IMPORTANT: The MGS-550 will come with one or no sensors installed from the factory. IMPORTANT: The gas detector may have come with one factory installed gas sensor element. A second gas sensor element may be installed (if applicable) in the second M25 Cable gland at the bottom of the gas detector.
  • Page 4 Hold) switches are provided depending on the users method of interface. Both sets of switches have redundant functions and can be used to configure, calibrate and maintain the MGS-550. The following table describes the switches functionality: Button / Mag Switch...

  • Page 5: General Calibration Procedure

    6. General Calibration Procedure WARNING: The MGS-550 MUST NOT be in an alarm or fault condition during calibration. Acknowledge any alarms or faults BEFORE attempting to begin the calibration process. WARNING: Except for CO or O sensors, calibration gas must be...
  • Page 6 – i.e., ppm, Vol %, %LEL, etc. (e.g., “100”). %, %LEL, etc. (e.g., “100”). IMPORTANT: The MGS-550 will come with one or no sensors installed from the factory. 15. Wait for the current gas concentration value to stabilize.