3M MACURCO GD-6 User Manual

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GD-6

 

Macurco

Combustible Gas Detector, Controller and Transducer

User Instructions

Important: Keep these User Instructions for reference.

TABLE OF CONTENTS

 

GENERAL SAFETY INFORMATION................................................................................................................

2

Intended Use...........................................................................................................................................

2

List of Warnings and Cautions.................................................................................................................

2

USE INSTRUCTIONS AND LIMITATIONS.......................................................................................................

3

Use For...................................................................................................................................................

3

Do Not Use For........................................................................................................................................

3

General Description.................................................................................................................................

3

Features.................................................................................................................................................

4

Specifications.........................................................................................................................................

4

INSTALLATION AND OPERATING INSTRUCTIONS.........................................................................................

5

General Information................................................................................................................................

5

Location..................................................................................................................................................

5

Installation..............................................................................................................................................

6

Garage diagram................................................................................................................................

6

4-20mA Output diagram...................................................................................................................

7

Multiple Device diagram....................................................................................................................

8

Alarm Control Panel diagram.............................................................................................................

9

DVP-120 Control Panel diagram......................................................................................................

10

Power Up..............................................................................................................................................

11

Operation..............................................................................................................................................

11

Default – Factory Settings.....................................................................................................................

11

Gas Selection..................................................................................................................................

12

Display setting................................................................................................................................

13

Buzzer setting.................................................................................................................................

13

Alarm Relay setting.........................................................................................................................

13

Alarm Relay Configuration...............................................................................................................

13

Fan Relay setting.............................................................................................................................

13

Fan Relay Delay setting...................................................................................................................

13

Fan Minimum Runtime setting.........................................................................................................

14

4-20mA Output setting....................................................................................................................

14

On Board Diagnostics............................................................................................................................

14

Sensor Poisons.....................................................................................................................................

14

MAINTENANCE...........................................................................................................................................

15

Cleaning...............................................................................................................................................

15

Testing..................................................................................................................................................

15

Operation Test.................................................................................................................................

16

Manual Operation Test.....................................................................................................................

16

Combustible Gas Test......................................................................................................................

17

Quick Gas Test................................................................................................................................

20

Field Calibration Procedure...................................................................................................................

21

Zero the Sensor...............................................................................................................................

21

Calibration......................................................................................................................................

21

3M GAS DETECTION PRODUCTS WARRANTY............................................................................................

22

FOR MORE INFORMATION..........................................................................................................................

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GENERAL SAFETY INFORMATION

Intended Use

The 3M™ Macurco™ GD-6 Combustible Gas Detector, Controller and Transducer is a low voltage device with selectable 4-20mA output, buzzer and digital display options. It is an electronic detection system used to measure the concentration of combustible gas and provide feedback and automatic exhaust fan control to help reduce combustible gas concentrations in parking garages, maintenance facilities or other light commercial applications. The 3M™ Macurco™ GD-6 Combustible Gas Detector is a low level meter capable of displaying from 0-50% LEL (Lower Explosive Limit) of combustible gas. The 3M™ Macurco™ GD-6 Combustible Gas Detector is factory calibrated and tested for proper operation, but can also be calibrated in the field.

List of Warnings and Cautions within these User Instructions

WWARNING

Each person using this equipment must read and understand the information in these User Instructions before use. Use of this equipment by untrained or unqualified persons, or use that is not in accordance with these User Instructions, may adversely affect product performance and result in sickness or death.

Use only for monitoring the gas which the sensor and instrument are designed to monitor. Failure to do so may result in exposures to gases not detectable and cause sickness or death. For proper use, see supervisor or User Instructions, or call 3M in U.S.A., 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

GD-6 may not function effectively below 0°F or above 125°F (-18°C or above 52°C). Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death.

This detector helps monitor for the presence and concentration level of certain specified airborne gases. Misuse may produce an inaccurate reading, which means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death. For proper use, see supervisor or User Instructions, or call 3M in U.S.A., 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

Each time the unit is turned on it performs a self-test, which activates visual alarms. If the self-test fails, or if all the alarms do not activate, do not use. Failure to do so may adversely affect product performance and result in sickness or death.

Do not cover or obstruct visual alarm. Doing so may adversely affect product performance and result in sickness or death.

Do not disassemble unit or attempt to repair or modify any component of this instrument.This instrument contains no user serviceable parts, and substitution of components may impair product performance and result in sickness or death.

Using a certified gas with a concentration other than the one listed for this instrument and sensor when conducting a calibration or calibration verification test (bump test) will produce inaccurate readings. This means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death. For proper use, see supervisor, User Instructions or call 3M in U.S.A., 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

The following steps must be performed when conducting a calibration or calibration verification test (bump test) to ensure proper performance of the monitor. Failure to do so may adversely affect product performance and result in sickness or death.

When performing a calibration or calibration verification test (bump test) only use certified calibration gas at the required concentration level. Do not calibrate with expired calibration gas.

If the instrument cannot be calibrated, do not use until the reason can be determined and corrected.

Do not cover or obstruct display or visual alarm cover.

Ensure sensor inlet is unobstructed and is free of debris.

USE INSTRUCTIONS AND LIMITATIONS

W WARNING

Each person using this equipment must read and understand the information in these User Instructions before use. Use of this equipment by untrained or unqualified persons, or use that is not in accordance with these User Instructions, may adversely affect product performance and result in sickness or death.

Use For

The 3M™ Macurco™ GD-6 Combustible Gas Detector helps combustible gas detection and automatic exhaust fan control for automotive maintenance facilities, enclosed parking garages, warehouses with forklifts, etc. The 3M™ Macurco™ GD-6 Combustible Gas Detector can be used with 12VDC or 24VDC N.O. (fire/security) panels.

W WARNING

Use only for monitoring the gas which the sensor and instrument are designed to monitor. Failure to do so may result in exposures to gases not detectable and cause sickness or death. For proper use, see supervisor or User Instructions, or call 3M in U.S.A., 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

Do Not Use For

The 3M™ Macurco™ GD-6 Combustible Gas Detector is NOT intended for use in hazardous locations or industrial applications such as refineries, chemical plants, etc.

DO NOT mount the 3M™ Macurco™ GD-6 Combustible Gas Detector where the normal ambient temperature is below 0°F or exceeds 125°F (-18°C or above 52°C).The 3M™ Macurco™ GD-6 Combustible Gas Detector mounts on a type 4S electrical box supplied by the contractor.

W WARNING

The 3M™ Macurco™ GD-6 Combustible Gas Detector may not function effectively below 0°F or above 125°F (-18°C or above 52°C). Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death.

General Description

The 3M™ Macurco™ GD-6 Combustible Gas Detector is a low voltage, dual relay combustible gas (EX) detector and automatic ventilation controller. The 3M™ Macurco™ GD-6 Combustible Gas Detector uses a microcomputer controlled, electronic system to measure the concentration of combustible gas, actuate relays and provide a 4-20mA (0-50% LEL) output. The

3M™ Macurco™ GD-6 Combustible Gas Detector is low maintenance with a long life (5+ years) pellistor sensor and optional gas test and calibration kits. The 3M™ Macurco™ GD-6 Combustible Gas Detector is a low level meter capable of displaying from 0-50% LEL of combustible gas.

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Features

ETL Listed to UL 61010-1

The 3M™ Macurco™ GD-6 Combustible Gas Detector can be bump-tested with the FTK with 10% LEL Methane, 10% LEL Propane or 10% LEL Hydrogen gas, regulator and calibration hood.

The 3M™ Macurco™ GD-6 Combustible Gas Detector can be field calibrated using 10% LEL Methane, 10% LEL Propane or 10% LEL Hydrogen gas, regulator and calibration hood.

The 3M™ Macurco™ GD-6 Combustible Gas Detector is a low level meter capable of displaying from 0-50% LEL EX

Selectable fan and alarm relay activation

5A SPDT fan relay controls starters of exhaust fans

0.5A N.O. or N.C. alarm relay connects to warning devices or control panels

4-20mA current loop

The 3M™ Macurco™ GD-6 Combustible Gas Detector mounts on a standard 4x4 electrical box and becomes cover for the box

Supervised system: any internal detector problem will cause the fan & alarm relay to activate

Optional calibration kit is available. One screw allows access for calibration

Specifications

Power: 3W (max) from 12 to 24VAC (Volts Alternating Current) or 12 to 48VDC (Volts Direct Current)

Current @ 24VDC: 75mA in alarm (two relays), 50mA (fan relay only) and 23mA stand by

Shipping Weight: 1 pound (0.45 kg)

Size: 4 1/2 x 4 x 2 1/8 in. (11.4 x 10.2 x 5.4 cm)

Color: dark gray

Connections: plugs/terminals

Mounting box: (not included) 4x4 electric

Fan relay: 5A, 240VAC, pilot duty, SPDT

Fan relay actuation: selectable at 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 (default), 11, 12, 13, 14, 15, 16, 17, 18, 19, 20% LEL

Fan Delay Settings of 0, 1, 3 (default), 5 and 10 minutes

Fan Minimum Run Time settings are OFF (default), 3, 5, 10 or 15 minutes

Alarm relay: 0.5A 200V, 10VA

Alarm relay actuation: selectable N.O. default or N.C.

Alarm relay settings: OFF, 5, 10, 15, 20 (default), 25% LEL

Current loop, 4-20mA for 0-50% LEL

Operating environ: 0°F to 125°F (-18°C to 52°C). 10 to 90% RH

INSTALLATION AND OPERATING INSTRUCTIONS

The following instructions are intended to serve as a guideline for the use of the 3M™ Macurco™ GD-6 Combustible Gas Detector, Controller and Transducer. It is not to be considered all-inclusive, nor is it intended to replace the policy and procedures for each facility.

W WARNING

This detector monitors for the presence and concentration level of certain specified airborne gases. Misuse may produce an inaccurate reading, which means that higher levels of the gas being monitored may be present and could result in overexposure and cause sickness or death. For proper use, see supervisor, User Instructions or call 3M in U.S.A., 1-800-243-4630. In Canada, call Technical Service at 1-800-267-4414.

If you have any doubts about the applicability of the equipment to your job situation, consult an Industrial Hygienist or call 3M

Macurco Technical Service at 1-800-243-4630. In Canada, call 1-800-267-4414.

General Information

The 3M™ Macurco™ GD-6 Combustible Gas Detector helps combustible gas detection and automatic exhaust fan control for automotive maintenance facilities, enclosed parking garages, warehouses with forklifts, etc. The GD-6 can be used with 12VDC or 24VDC N.O. (fire/security) panels.

Location

A 3M™ Macurco™ GD-6 Combustible Gas Detector is usually located in areas where there is potential for gas leaks; where there are gas appliances, areas through which gas pipes pass, where batteries are being stored or charged, etc. DO NOT mount the 3M™ Macurco™ GD-6 Combustible Gas Detector in a corner. DO NOT mount the 3M™ Macurco™ GD-6 Combustible Gas

Detector where the normal ambient temperature is below below 0°F or exceeds 125°F (-18°C or above 52°C). If the target gas is lighter than air; natural gas (Methane) or Hydrogen (H2), mount the 3M™ Macurco™ GD-6 Combustible Gas Detector high on a wall about one foot down from the ceiling. If the target gas is heavier than air; propane (LP), mount the 3M™ Macurco™ GD-6 Combustible Gas Detector on a wall or column one foot above the floor. Use the same spacing as for smoke detectors-30 foot centers, 900 square feet per detector.

Note: alcohols, ammonia, cleaning solvents, paint thinner; gasoline vapors and aerosol propellants (aerosol cans such as hair spray usually contain a combustible gas) may cause alarms.

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Installation

1.The 3M™ Macurco™ GD-6 Combustible Gas Detector mounts on a type 4S electrical box supplied by the contractor.

2.Connect the 3M™ Macurco™ GD-6 Combustible Gas Detector to Class 2 power supply only. It is suggested to use a separate transformer for powering the unit or units because of possible interference’s from other devices on the same power supply.

3.Connect the 3M™ Macurco™ GD-6 Combustible Gas Detector to the control cables with terminal plugs. When making connections, make sure the power is off.

4.There are two terminals for Power: 12 to 24VAC or 12 to 48VDC, with no polarity preference.

5.There are two terminals for the dry alarm relay contacts, again with no polarity preference. The alarm relay can switch up to 0.5A, 200V, or 10VA. The alarm relay is activated if gas reaches or exceeds the alarm settings.

6.The alarm relay can be configured to normally open (default) (N.O.) or normally closed (N.C.) and will activate if the gas concentration exceeds alarm set point (5, 10, 15, 20 (default), 25% LEL). It will deactivate once the gas concentration drops below the alarm set point. Note that the “disable” setting will cause the alarm relay not to engage at all.

7.The dry contact, SPDT fan relay has three terminals. The common (COM.), normally open (N.O.) and the normally closed (N.C.) contact. The fan relay can switch up to 5.0A up to 240VAC. (see OPERATION section of these User Instructions for details on relay settings).

8.The fan relay can be wired to normally open (N.O.) or normally closed (N.C.) and will engage if the fan setting (1, 2, 3, 4, 5, 6, 7, 8, 9, 10 (default), 11, 12, 13, 14, 15, 16, 17, 18, 19, 20% LEL) is exceeded for the fan relay delay time (0, 1,

3 (default), 5, 10 minutes).The fan relay will disengage once both of these conditions have been met: 1. Combustible gas concentration has dropped below fan setting and 2. Fan relay run time (0 (default), 3, 5, 10, 15 minutes) has been exceeded. Note that the “disable” fan setting will cause the fan relay to not engage. The fan relay will engage in trouble fault condition and will disengage once trouble fault condition is cleared.

9.The Current Loop is 4mA in clean air and 4-20mA for 0-50% LEL.

50

 

 

 

 

 

37.5

% LEL

 

 

 

 

25

 

 

 

 

Percent

 

 

 

 

12.5

 

 

 

 

 

 

 

 

 

0

4

9

14

20

GD-6 rear view with

 

 

 

Output in mA: GD-6

 

Modular Connectors

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