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User Instructions before use. Installation 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. For proper use see User Instructions or call Macurco Technical Service.
For proper use, see supervisor or User Instructions, or call Macurco Technical Service. GD-2A may not function effectively below 32 °F or above 120°F. Using the detector outside of this temperature range may adversely affect product performance and result in sickness or death.
The GD-2A is NOT intended for use in industrial applications such as refineries, chemical plants, etc. The GD-2A does NOT detect carbon monoxide. Do NOT mount the GD-2A in a corner. The GD-2A is designed for connection to Fire Alarm/Burglary Control Panels. Do not connect the GD- 2A to Fire Alarm Circuits, or Burglar Alarm or other signals.
Alarm set point: Per UL 1484 (25% LEL) 3 Installation and Operating Instructions The following instructions are intended to serve as a guideline for the use of the Macurco GD-2A Combustible Gas Detector. It is not to be considered all-inclusive, nor is it intended to replace the policy and procedures for each facility.
3.2 Installation 1. If the gas used is natural gas (methane) mount the GD-2A on a wall about one foot down from the ceiling. If the gas used is propane (LP), mount the GD-2A 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.
Macurco GD-2A Operation Manual Figure 3-1 – Connection of a single GD-2A to an alarm control panel Figure 3-2 – Connection of multiple GD-2A to an alarm control panel 4 Operation WARNING When the unit is powered up it performs a self-test during which the green LED light blinks for a period of one and one half to two minutes.
In addition to the methane (natural gas) and propane (LP) gas that it is designed to detect, the GD-2A can also be affected by a broad range of combustible gases. Some of these that may cause an alarm are •...
A failure of the gas-sensing element will result in both lights turning on and off and the trouble relay opening. Failure of power supplies in the GD-2A or a lack of power to the detector will result in the trouble relay opening.
Macurco GD-2A Operation Manual 6 Testing Once the unit is fully operational (the green light is on steady), test the unit by directing gas from an unlighted butane cigarette lighter into the detector near the left-hand side through one of the vent holes. It will be necessary to hold the lighter valve open for several seconds.
Macurco warrants the GD-2A gas detector will be free from defective materials and workmanship for a period of two (2) years from the date of manufacture (indicated on inside cover of the GD-2A), provided it is maintained and used in accordance with Macurco instructions and/or recommendations. If any component becomes defective during the warranty period, it will be replaced or repaired free of charge, if the unit is returned in accordance with the instructions below.
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