Bacharach MGD-100 Specifications

Gas Detector and Controllers Installation and Operation Manual Instruction 6109-9000 Revision 3 – June 2013 Product Leadership

M GD-100 M anual 10 6109-9000 Rev 3 1.2. Technical Specifications Specification De s cr ip t ion Pow er Supply 120 VA C 60 Hz , 220 VAC 50 Hz, o

M GD-100 M anual 6109-9000 Rev 3 11 Specification De s cr ip t ion 1- and 2-channel systems 4- and 6-channel systems Standard Enclosure Ratings

M GD-100 M anual 12 6109-9000 Rev 3 Supported CFM and Duct Sizes for the Duct Mount Housing Unit s Duct Size Inches 12 x 12 12 x 24 18 x 18 2

M GD-100 M anual 6109-9000 Rev 3 13 Section 2. Placing Sensors 2.1. Installation Warnings NOTE: This instrument can be equipped with a semicond

M GD-100 M anual 14 6109-9000 Rev 3 A void routing sensor c abling outside of premises, or between buil dings via overhead cabl es. Also, sensor wi

M GD-100 M anual 6109-9000 Rev 3 15 2.3. Machinery Rooms There is no absolute rule in det ermining t he num ber of sens ors and their locations. H

M GD-100 M anual 16 6109-9000 Rev 3 Otherwise, a gas leak might pass by i n a high-speed j et and not be det ected by the sensor. • Make sure tha

M GD-100 M anual 6109-9000 Rev 3 17 • With air-cooled chillers or air-cooled condensers with non-enclosed condenser sections it is difficult to ef

M GD-100 M anual 18 6109-9000 Rev 3 Section 3. Housing Dimensions Figure 6. MGD-100 Standard Housing

M GD-100 M anual 6109-9000 Rev 3 19 Figure 7. MGD-100 Exd Housing Figure 8. MGD-100 IP66 Housing (with Splash Guard)

M GD-100 M anual 2 6109-9000 Rev 3 WARRANTY POLICY BA CHA RA CH, INC. WA RRANTS THIS INSTRUMENT, EXCLUDING SENSORS, TO BE FREE FROM DEFECTS IN MATE

M GD-100 M anual 20 6109-9000 Rev 3 Figure 9. MGD-100 IP66 Housing with Remote Sensor Figure 10. MGS-100 IP66 Housing with Airflow Duct Mount

M GD-100 M anual 6109-9000 Rev 3 21 Figure 11. 4- & 6-Sensor Controller Housing

M GD-100 M anual 22 6109-9000 Rev 3 Figure 12. 1- to 2-Sensor Controller Housing

M GD-100 M anual 6109-9000 Rev 3 23 Section 4. Wiring Instructions 4.1. Wiring MGD-100s Step Wiring MGD-100s 1 Connect a 4-conductor cable (18 A

M GD-100 M anual 24 6109-9000 Rev 3 IMPORTANT: Ensure that connections 1 to 4 on the sensor connect to their corresponding numbers on the termi n

M GD-100 M anual 6109-9000 Rev 3 25 4.3. Relays Connect leads to terminal block for Common (COM) and N/O and/or N/C connections as required. Note

M GD-100 M anual 26 6109-9000 Rev 3 NOT E: The main power supply cable should be of an approved type based on local regulations. NOT E: The

M GD-100 M anual 6109-9000 Rev 3 27 Figure 13. 1- & 2-Sensor, One-Alarm Installation Diagram

M GD-100 M anual 28 6109-9000 Rev 3 Figure 14. 1- & 2-Sensor, Two-Alarm Installation Diagram

M GD-100 M anual 6109-9000 Rev 3 29 Figure 15. 4- & 6-Sensor, One-Alarm Installation

M GD-100 M anual 6109-9000 Rev 3 3 PERFOR MING ALL NEED ED REPA IRS TO RESTORE THE INSTRUMENT TO FULL OPERA TING CONDITION. PRIOR TO SHIPPING EQUI

M GD-100 M anual 30 6109-9000 Rev 3 Figure 16. 4- & 6-Sensor, Two-Alarm Installation

M GD-100 M anual 6109-9000 Rev 3 31 Section 5. Operation and Stabilization When power to the unit is switched on, there is a 3-minute delay before

M GD-100 M anual 32 6109-9000 Rev 3 Operation State Description Idle Only the green light on the panel is on. No gas is present. Power Interrupte

M GD-100 M anual 6109-9000 Rev 3 33 Section 6. Functional Tests and Calibration 6.1. Introduction To comply with t he requirements of EN378 and t

M GD-100 M anual 34 6109-9000 Rev 3 IMPORTANT: Before testing the sensors on-site, the MGD-100 must have been powered up and allowed to stabilize

M GD-100 M anual 6109-9000 Rev 3 35 CAUTION: Before you carry out the bump test or calibration: • Advise occupants, plant operators, and superv

M GD-100 M anual 36 6109-9000 Rev 3 Step Electrical Re set of One-Alarm Systems 2 Connect a voltmeter between Pins 4 (-Ve) and 2 (+Ve) of the sens

M GD-100 M anual 6109-9000 Rev 3 37 Step Electrical Re set of Two-Alarm Systems 1 For the sens or standby voltage, connect a DC voltmeter between

M GD-100 M anual 38 6109-9000 Rev 3 Step Bump Testing U si n g Calibration Gas Cylinders 1 Remove the enclosure lid of the gas sensor and controll

M GD-100 M anual 6109-9000 Rev 3 39 Figure 18. Gas Ampoules for Bump Testing Step Bump Testing Using Ga s Ampoule s 1 Make sure that both the am

M GD-100 M anual 4 6109-9000 Rev 3 Table of Contents SECTION 1. OVERVIEW ...

M GD-100 M anual 40 6109-9000 Rev 3 Step Bump Testing Using Ga s Ampoule s 9 Remove the beaker from the sensor. Carefully remove any ampoule rema

M GD-100 M anual 6109-9000 Rev 3 41 Step Sensor Board Exchange 1 Power off the unit and rem ove lid of sensor enclosure. 2 Note the color code o

M GD-100 M anual 42 6109-9000 Rev 3 First disable the 3-minute alarm delay on a one-al arm system by moving the jumper link at JP1 to the off posit

M GD-100 M anual 6109-9000 Rev 3 43 6.9. Gas Calibration (Two-Alarm Units) NOT E: This calibration procedure is for a two-alarm unit. For one

M GD-100 M anual 44 6109-9000 Rev 3 Section 7. Troubleshooting Symptom Possible Cause(s) No lights displayed on panel • Power failure (check sup

M GD-100 M anual 6109-9000 Rev 3 45 Place the negative probe on terminal position 4 and with the positive on 1, 3, 2, check the values. The reading

M GD-100 M anual 46 6109-9000 Rev 3

M GD-100 M anual 6109-9000 Rev 3 47 DECLARATION OF CONFORMITY The manufacture r of the products covere d by this declaration: Ba charach, Inc.

M GD-100 M anual 48 6109-9000 Rev 3 World Headquarters 621 Hunt Valley Circle, New Kensington, Pennsylvania 15068

M GD-100 M anual 6109-9000 Rev 3 5 Section 1. Overview 1.1. General Information The MGD-100 is the ideal gas detection solution for installation

M GD-100 M anual 6 6109-9000 Rev 3 Figure 1. MGD-100 1- and 2-Channel Controller PCB (Single Level Alarm) Figure 2. MGD-100 1- and 2-Channel Co

M GD-100 M anual 6109-9000 Rev 3 7 Figure 3. MGD-100 4- and 6-Channel Controller PCB (Single Level Alarm)

M GD-100 M anual 8 6109-9000 Rev 3 Figure 4. MGD-100 4- and 6-Channel Controller PCB (Dual Level Alarm)

M GD-100 M anual 6109-9000 Rev 3 9 Figure 5. Examples MGD-100 PCBs