Instruction Manual

ManualsBrandsSierra Monitor Corporation ManualsCarbon Monoxide Alarm2360-00 Carbon Monoxide Alarm

GAS MONITOR

Model 2350-00

Model 2360-00

Sierra Monitor Corporation

1991 Tarob Court, Milpitas, CA 95035

(408) 262-6611

(800) 727-4377

(408) 262-9042 - Fax

E-mail: sierra@sierramonitor.com

Web Site: www.sierramonitor.com

APPLICABILITY & EFFECTIVITY

This manual provides instructions for the following Sierra Monitor products:

Model Description

2350-00 Gas Monitor - Toxic Only

2360-00 Gas Monitor - Toxic & Combustible

The instructions are effective for the above models as of March 1, 1999

Instruction Manual Part Number: T10011

Rev. B

Summary of content (11 pages)

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Sierra Monitor Corporation 1991 Tarob Court, Milpitas, CA 95035 (408) 262-6611 (800) 727-4377 (408) 262-9042 - Fax E-mail: sierra@sierramonitor.com Web Site: www.sierramonitor.
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Instruction Manual TABLE OF CONTENTS SECTION 1.0 PRODUCT DESCRIPTION 1.1 Introduction 1.2 General Description 1.2.1. Mechanical 1.2.2. Alarm Relays 1.2.3. Alarm Indicators 1.2.4. Test Switches 2.0 INSTALLATION 2.1 Unpacking and Inspection 2.2 Installation & Set-Up 2.2.1. Enclosure Mounting 2.2.2. Interface Wiring 2.2.3. Start-Up 3.0 OPERATION 3.1 Status Indication 3.2 Function Tests 4.0 CALIBRATION 4.1 Frequency of Calibration 4.2 Calibration Procedure 4.
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Instruction Manual 1.0 PRODUCT DESCRIPTION 1.1 INTRODUCTION The Model 2350 and 2360 series Gas Monitors provide continuous monitoring of Methane (and other Combustibles) and Carbon Monoxide gas simultaneously in a confined space to provide safety for personnel and to reduce the hazard of gas explosion. Both models are designed to operate from a -48 VDC power source typically available in telephone equipment applications. The monitors are designed for use primarily in telephone equipment cabinets.
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Instruction Manual Figure 1.2 Model 2350-00 1.2 GENERAL DESCRIPTION 1.2.1. MECHANICAL The Gas Monitor is comprised of a printed circuit assembly mounted behind a flat cover plate which serves as the instrument cover when installed into a user supplied, three position electrical gang box (figure 1.3). Electrical connections for power (-48 VDC) and relays (dry contact alarm activated) are made via screw terminals on the printed circuit board prior to installation into the gang box.
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Instruction Manual Figure 1.3 Models 2350, 2360 Mechanical 1.2.2. ALARM RELAYS There are five alarm relays (Note: Combustible Gas relay is not installed on Model 2350-00). All are single-pole doublethrow with 6 amp dry non-inductive contacts at 120/240 volts AC. • FAILURE RELAY: The failure relay is activated when either gas sensor becomes defective (open sensor resistance or no heater voltage). The failure relay is normally energized so it will also be activated if the 48 VDC power fails.
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Instruction Manual 1.2.3. ALARM INDICATORS The Model 2350 front panel has one audible alarm and four LED annunciation lights. • AUDIBLE ALARM: The Audible Alarm will sound when either the CO or CH4 gas concentration exceeds the respective calibrated threshold levels. The Audible Alarm produces a continuous tone of 2900 Hz at 68 dB. • POWER FAILURE ALARM: The Power-On Failure Alarm consists of a Power-On Lamp (green) which glows when -48 VDC is present and turns off if power is lost.
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Instruction Manual 2.0 INSTALLATION 2.1 UNPACKING AND INSPECTION Remove the gas monitor from its packing container and inspect to insure that all items listed on the packing slip have been received in good condition. 2.2 INSTALLATION AND SET-UP 2.2.1. ENCLOSURE MOUNTING Install a three position gang box (not supplied) on a vertical surface in the location selected for the gas monitor. Entry for power supply wiring and for alarm contacts should be supplied through conduit connected to the knock out. 2.2.2.
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Instruction Manual 3.0 OPERATION The Model 2350 and 2360 require no operator intervention except for periodic calibration. The following information can be followed to insure that the initial installation and external wiring is correct. 3.
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Instruction Manual 4.0 CALIBRATION 4.1 FREQUENCY OF CALIBRATION The manufacturer recommends that the Model 2350 or 2360 be calibrated as follows: • During the first three months of operation: Calibrate every 30 days. • Upon completion of three months operation: Calibrate every 90 days. 4.2 CALIBRATION PROCEDURE PREPARATION: Locate the two (one for Model 2350) span adjusting potentiometers which are visible on the front panel.
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Instruction Manual 5.0 SPECIFICATIONS & SPARE PARTS SPECIFICATIONS INPUT POWER OPERATING TEMPERATURE CALIBRATION RANGE FACTORY CALIBRATION RESPONSE TIME ENCLOSURE CONNECTORS OUTPUT RELAYS GAS SENSORS TEMPERATURE SENSOR AUDIBLE ALARM FUSE SIZE WEIGHT -48 VDC 4 Watts Max. 32 to 104oF (0 - 40oC) Carbon Monoxide: 50 - 200 PPM Methane: 2,500 - 12,500 PPM (5% - 25% LEL) Carbon Monoxide: 100 PPM Methane 5000 PPM Less than 30 Seconds None - Fits 3 position electrical gang box.
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Instruction Manual 6.0 LIMITED WARRANTY SIERRA MONITOR CORPORATION warrants its products to be free from defects in workmanship or material under normal use and service for two years after date of shipment. SMC will repair or replace without charge any equipment found to be defective during the warranty period. Final determination of the nature and responsibility for defective or damaged equipment will be made by SMC personnel.