Bacharach SZ Manual (CO2)

Download

Page 1

CO2MSZ Carbon Dioxide Gas Monitor Single Zone

Instruction 3015-4603

Installation / Operation / Maintenance

Rev 2 - August 2009

Product Leadership • Training • Service • Reliability

Page 2

WARRANTY

Bacharach, Inc. warrants to Buyer that at the time of delivery this Product will be free from defects in material and manufacture and will conform substantially to Bacharach Inc.'s applicable specifications. Bacharach's liability and Buyer's remedy under this warranty are limited to the repair or replacement, at Bacharach's option, of this Product or parts thereof returned to Seller at the factory of manufacture and shown to Bacharach Inc.'s reasonable satisfaction to have been defective; provided that written notice of the defect shall have been given by Buyer to Bacharach Inc. within two (2) years after the date of delivery of this Product by Bacharach, Inc.

Bacharach, Inc. warrants to Buyer that it will convey good title to this Product. Bacharach's liability and Buyer's remedy under this warranty of title are limited to the removal of any title defects or, at the election of Bacharach, to the replacement of this Product or parts thereof that are defective in title.

The warranty set forth in paragraph 1 does not apply to parts the Operating Instructions designate as having a limited shelflife or as being expended in normal use (e.g., filters).

THE FOREGOING WARRANTIES ARE EXCLUSIVE AND ARE GIVEN AND ACCEPTED IN LIEU OF (I) ANY AND ALL OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE: AND (II) ANY OBLIGATION, LIABILITY, RIGHT, CLAIM OR REMEDY IN CONTRACT OR TORT, WHETHER OR NOT ARISING FROM BACHARACH'S NEGLIGENCE, ACTUAL OR IMPLIED. The remedies of the Buyer shall be limited to those provided herein to the exclusion of any and all other remedies including, without limitation incidental or consequential damages. No agreement varying or extending the foregoing warranties, remedies or this limitation will be binding upon Bacharach, Inc. unless in writing, signed by a duly authorized officer of Bacharach.

www.mybacharach.com

Notice:

Product improvements and enhancements are continuous; therefore the specifications and information contained in this document may change without notice.

Bacharach, Inc. shall not be liable for errors contained herein or for incidental or consequential damages in connection with the furnishing, performance, or use of this material.

No part of this document may be photocopied, reproduced, or translated to another language without the prior written consent of Bacharach, Inc.

BACHARACH® is a registered trademark of Bacharach, Inc. All other trademarks, trade names, service marks and logos referenced herein belong to their respective owners.

Manufacturer’s name: Bacharach, Inc.

Manufacturer’s address: 621 Hunt Valley Circle

Product Name: CO2MSZ (Carbon Dioxide Gas Monitor Single Zone)

Declaration of Conformity

New Kensington, PA 15068

conforms to the following harmonized European EMC standards:

EN61326-1 EN61000 EN55022

Instruction 3015-4603

Page 3

Table of Contents

INTRODUCTION............................................................................................................... 1

How To Use This Manual .....................................................................................................................1

Warning Statements.............................................................................................................................1

Caution Statements ..............................................................................................................................1

Hazard Symbols on Monitor.................................................................................................................1

Safety Precautions ................................................................................................................................2

AC Power Supply...............................................................................................................................2

Protective Grounding ........................................................................................................................2

Explosive Atmosphere.......................................................................................................................2

Proper Exhaust Venting ...................................................................................................................2

Working Inside the Monitor .............................................................................................................2

Misuse and Modifications to Monitor...............................................................................................2

In Case of Malfunction......................................................................................................................2

Fusing.................................................................................................................................................2

Installation Category ........................................................................................................................2

Altitude Limit ....................................................................................................................................2

Cleaning .............................................................................................................................................2

Functional Overview.............................................................................................................................3

General Description ..........................................................................................................................3

Understanding Monitoring levels.....................................................................................................3

Suggested Location of Sampling Points...........................................................................................4

INSTALLATION ................................................................................................................ 5

Installation Considerations..................................................................................................................5

Warnings and Cautions ....................................................................................................................5

Inspection...........................................................................................................................................5

Locating the Monitor.........................................................................................................................5

Mounting Instructions ..........................................................................................................................6

Connecting Gas Sample, Purge, and Exhaust Lines ..........................................................................6

Overview ............................................................................................................................................6

Tubing Considerations ......................................................................................................................7

Connecting the Gas-Sample Line.....................................................................................................7

Connecting the Purge Line ...............................................................................................................7

Connecting the Exhaust Line ...........................................................................................................7

Interior Schematic ................................................................................................................................8

Electrical Wiring ...................................................................................................................................9

Connecting External Alarms..............................................................................................................10

Overview ..........................................................................................................................................10

Connection .......................................................................................................................................10

4-20 mA Current Loop Interface........................................................................................................11

OPERATION..................................................................................................................... 13

Front Panel Display and Controls .....................................................................................................13

General Operation ..............................................................................................................................13

Display Screens ...................................................................................................................................14

Initial Power Up ..............................................................................................................................14

Data Display Screen........................................................................................................................14

Function Screens .............................................................................................................................15

Working with Gas Alarms ..................................................................................................................18

Overview ..........................................................................................................................................18

Clearing / Silencing a Gas Alarm ...................................................................................................18

Viewing the Gas Alarm Log............................................................................................................18

Working with System Faults..............................................................................................................18

Overview ..........................................................................................................................................18

Clearing / Silencing a Fault Alarm ................................................................................................18

Viewing the Fault Log.....................................................................................................................19

Fault Codes ......................................................................................................................................19

Page 4

Clearing the Stored PPM Log, Alarm & Fault Data ........................................................................20

Working with the P-CHK Function ...................................................................................................20

Overview ..........................................................................................................................................20

Keypad Functions............................................................................................................................20

Screen Display .................................................................................................................................20

Working with the DIAGNOS Function .............................................................................................21

Overview ..........................................................................................................................................21

Keypad Functions............................................................................................................................21

First Diagnostic Screen...................................................................................................................21

Second Diagnostic Screen ...............................................................................................................21

Working with the Calibration Function ............................................................................................22

Overview ..........................................................................................................................................22

Calibration Procedure .....................................................................................................................22

Adjusting Calibration Factor..........................................................................................................22

MAINTENANCE .............................................................................................................. 23

Warnings and Cautions......................................................................................................................23

Hydrophobic Filters ............................................................................................................................23

Servicing Air Lines & Termination Filters .......................................................................................23

Fuses ....................................................................................................................................................23

Clock Battery.......................................................................................................................................23

Sample Pump ......................................................................................................................................23

Replacement Parts & Optional Accessories ......................................................................................24

Replacement Parts ..........................................................................................................................24

Optional Accessories .......................................................................................................................24

Service Centers ...................................................................................................................................25

Specifications.......................................................................................................................................26

Page 5

Introduction

How to Use This Manual

Thank you for investing in a This manual provides important information on how to install, operate, and service the CO2MSZ monitoring unit.

To assure operator safety and the proper use of the monitor, please read, understand, and follow the contents of this manual.

If you have a working knowledge of gas monitors, you will find this manual useful as a reference tool. If you are new to the use of gas monitors, you can educate yourself about the principles of infrared gas detection and the proper operation of this device by reading this manual thoroughly.

Warning Statements

The use of the word equipment. It calls attention to a procedure, practice, or condition, or the like, which if not correctly performed or adhered to, could result in personal injury or death.

WAR

Caution Statements

The use of the word equipment. It calls attention to a procedure, practice, condition, or the like, which if not correctly performed or adhered to, could result in damage to the equipment.

CAUTION

Hazard Symbols on Monitor

This symbol indicates the need to consult this operating instruction manual when opening the enclosure.

WARNING: A potential risk exists if the operating instructions

are not followed.

This symbol indicates the presence of electric shock hazards when the enclosure is opened.

WARNING: To avoid risk of injury from electric shock, do not open

the enclosure without first disconnecting AC power.

Instruction 3015-4603

BACHARACH

NING

in this manual denotes a potential hazard associated with the use of this

CO2MSZ (Carbon Dioxide Gas Monitor Single Zone).

Page 6

Safety Precautions

AC Power Supply

The CO2MSZ uses a universal power supply that accepts AC inputs of between 100 and 240 Vac, 50/60 Hz, and has a power consumption of 15 Watts. It is highly suggested that the monitor be connected directly to the AC power source, preferably on its own circuit (with UPS or surge protection).

A switch or circuit breaker rated 1.0 A, 250 Vac, with a minimum terminal spacing of 3.0 mm must be attached to the monitor’s AC power leads. This switch must also be located in close proximity to the monitor, and be in easy reach of the operator. This switch should also be clearly marked as the monitor’s main AC disconnect device.

Protective Grounding

Under no circumstances should the CO2MSZ be operated without connection to a protective ground. Doing so poses a potential shock hazard and is also a violation of electrical safety standards applicable to this type of equipment.

Explosive Atmosphere

Do not operate this equipment in the presence of flammable liquids, vapors or aerosols. Operation of any electrical equipment in such an environment constitutes a safety hazard.

Proper Exhaust Venting

It is imperative that the monitor’s exhaust port be vented as described in this manual. Failure to do so may constitute a safety hazard.

Working Inside the Monitor

Extreme care should be exercised when accessing the interior of the monitor. Only qualified electrical maintenance personnel should perform connections and adjustments. Always remove AC power before working inside the monitor.

Misuse and Modifications to Monitor

The protection provided by the monitor may be impaired if the monitor is used in a manner not specified by Bacharach, Inc. Changes or modifications to this monitor, not expressly approved, will void the warranty.

In Case of Malfunction

Do not continue to use this equipment if there are any symptoms of malfunction or failure. In the case of such occurrence, de-energize the power supply and contact a qualified repair technician or the nearest Bacharach Service Center. Use ONLY the provided knockouts for electrical and communication wiring. Drilling into the box will void the warranty.

Fusing

F1, F2: 1.0 A, 250 V, Type “F”

Installation Category

Installation Category II, Pollution Degree II, as defined by UL.

Altitude Limit

6,562 ft (2,000 m)

Cleaning

Clean the outside of the monitor’s case using a dry cloth —

DO NOT

use soap and water.

Instruction 3015-4603

Page 7

Functional Overview

General Description

Carbon dioxide (CO2) monitors are specified to support compliance to federal, state and local safety codes governing gas emissions. Avoiding significant CO maintains equipment efficiency, promotes safety, and protects the environment.

The Bacharach CO2MSZ (Carbon Dioxide Gas Monitor Single Zone) is designed to continuously test for

the presence of CO

gas in an area that is located up to 500 ft (152.4 m) away from the monitor. The

CO2MSZ displays that CO peak gas level detected in that area on its front panel LCD. The monitor retains a log of previous readings that can be easily accessed for analysis.

An audible alarm and front panel indicators are provided to signal alarm and fault conditions, and relay contacts are provided that can be used to trigger external alarm devices in the event of a system fault, or if a leak (small), spill (medium), or evacuation (large) level of gas is detected. The system also includes a 4

−

20 mA current loop interface that can be connected to remote monitoring equipment.

The CO2MSZ requires only minor periodic maintenance such as the occasional replacement of filters. The monitor incorporates active diagnostics that continuously check the system for proper operation. A front panel indicator is provided to alert an operator of system malfunctions, and fault codes are generated that enable the operator to identify the cause of the fault.

Understanding Monitoring Levels

Effective use of this monitor requires an understanding of what constitutes reasonable alarm set points for the type of gas being monitored. Most systems leak some gas. In a good “tight” installation these background levels will be acceptably low and often do not require corrective action. You can reduce nuisance alarms and needless service calls if the alarm levels are set at practical limits.

The CO2MSZ is shipped with its leak, spill, and evacuate alarm levels set at 100, 300, and 500 ppm, respectively. Setting the monitor at these recommended alarm levels will satisfy the needs of most users. However, the ppm levels generated by system leaks into the environment are greatly influenced by the volume of air in the sampling area, air circulation, size of the leak, distance to the monitoring point, and a host of other variables. In some cases the alarm set points may need to be adjusted either up or down to achieve effective monitoring.

Instruction 3015-4603

gas loss reduces equipment replacement costs,

gas being monitored, along with displaying both the current gas level and the

Page 8

Suggested Location of Sampling Point

At the point of a CO

gas leak the gas is nearly pure. As CO

gas is dispersed into the air, the gas molecules diffuse causing a dilution of the original concentration. The CO2MSZ measures the gas concentration at the point the sample is collected. Therefore, if the termination of the monitor’s gassample line is not at the exact point of the gas leak, then the monitor will read a diluted mixture of CO

gas and air.

It should also be noted that CO

gas is heavier than air and tends to collect below the point of a leak.

Therefore a sample taken near the floor will have a greater concentration of gas than that collected above the source of a leak. Consequently, the sampling point should ideally be located as close as possible to the source of a potential leak. If this is impractical, then the alarm set points should be adjusted to compensate for the dilution of the gas.

The CO2MSZ should be mounted outside of the mechanical room or at least just inside of a door to the room. This is the “split architecture design” for safety of the operator. The monitor should be readily accessible for easy visual monitoring and servicing. The total length of the sample line + exhaust line can be up to 500 ft (152.4 m). If the area around the monitor is not well ventilated, then an optional exhaust line and purge line can be run to an outside location. The total length of the exhaust line + purge line can not exceed 200 ft (61.0 m).

It may be necessary to perform a “smoke” test of the mechanical room to determine the best monitoring point. The smoke test would provide the pattern of air currents present in the room.

CO2MSZ Gas Leak Monitor Mechanical Room Placement

Instruction 3015-4603

Page 9

Installation

Installation Considerations

Warnings and Cautions

WARNING: Explosion ha

contain flammable liquids, v in such an en

viro

WARNING: Shock hazar

the monitor.

CAUTION:

void the war

Drillin

ranty. Please use knockouts provided

CAUTION:

damaged. Be careful not to touch or disturb an

Inspection

The CO2MSZ has been thoroughly inspected and tested prior to shipment from the factory. Nevertheless, it is recommended that the monitor be re-checked prior to installation. Inspect the outside of the enclosure to make sure there are no obvious signs of shipping damage. Open the enclosure and inspect the interior of the monitor for loose components that may have become dislodged during shipment. If damage is discovered, please contact the nearest Bacharach Service Center for assistance.

he CO2MSZ contains sensitive electroni

Locating the Monitor

Place the monitor in a location that will require no more than 500 ft (152.4 m) of tubing (total of sample line + exhaust line) to reach the sampling area. Since the monitor uses ambient air to zero its gas sensor, the monitor should be located in an area that normally does not contain refrigerant gas. If an exhaust line is not used, then locate the monitor in a well ventilated area so that the exhaust gas does not accumulate around the monitor’s ventilation holes.

The CO2MSZ should be operated in an environment that is between 32 and 122°F (0 and 50°C); has a relative humidity of between 5 and 90% non-condensing; and is at an altitude of no more than 6,562 ft (2,000 m). The area should also be relatively free of dirt, grease, and oils that could adversely affect the operation of the monitor.

The location should allow the monitor to be easily accessible for visual monitoring and servicing.

Instruction 3015-4603

zard! Do not mount the CO2MSZ in a

apors

or aerosols. Operation

nment constitutes a safety hazard.

d! Alwa

g holes in the CO2MSZ enclosure may damage the unit an

ys disconnect AC

power be

for electrical connections.

c components that can be easily

y of these compon

n area that may

of an

y electric

fore workin

ents.

al equipment

g inside

d will

Mounting Instructions

Page 10

The CO2MSZ should be installed plumb and level, and securely fastened to a rigid vertical mounting surface.

The enclosure utilizes keyhole mounting brackets designed for ¼ inch fasteners. Install the four screws as shown in the diagram below or by using the provided mounting template. Allow the screw heads to

protrude approximately 1/4".

Enclosure Mounting Specs

Hold the monitor flat against the mounting surface and allow it to slide down engaging the screw heads in the keyhole slots of the mounting brackets. Adjust the screws as necessary to hold the monitor securely against the mounting surface.

Connecting Gas Sample, Purge, and Exhaust Lines

Overview

A single gas-sample line needs to be run from the CO2MSZ to the area of the facility to be monitored. An optional purge line can be run to bring fresh air into the monitor for detector zeroing purposes. And an optional exhaust line can be installed to vent the sample gas away from the monitor. All tubing connections are made on the bottom of the enclosure as shown in the illustration below.

½" / ¾" Service Knockout*

* There is an additional Service Knockout on top of the case

Purge Air Inlet Port

½" / ¾" Service Knockout*

CO2MSZ Bottom View

Gas Sample Inlet Port

Gas Sample Exhaust Port

Instruction 3015-4603

Page 11

Tubing Considerations

Use ¼" outside diameter (0.040" wall) flex tubing for all air lines (P/N 304-2742 or equivalent). The tubing should be clean and free of moisture or other contaminants. The tubing should be cut cleanly with a sharp knife and care should be taken not to distort the tubing end.

All tubing bends should have a radius of no less than 5" to ensure proper airflow. If kinks or obstructions occur in the line the monitor may not function properly.

Connecting the Gas-Sample Line

Please refer to Section a gas sample.

The gas-sample line can be up to exhaust line (if one is used) should not exceed 500 ft. The end of this line should be placed near the potential leak source and positioned to reduce the possibility of mists, aerosols, oil, water, dust, or other contaminates from being drawn into the monitor. For added protection, a termination filter (P/N 3015-3420) supplied with the monitor must be attached to the end of this line.

CAUTION:

in serious an

Suggested Lo

he intr

d permanent damage to th

cation of Sampling Po

500 ft (152.4 m)

oduction of contaminan

Connecting the Purge Line

The purge line functions to bring fresh air into the monitor for the purpose of purging the detector and setting its baseline reading. This purge line is required if the monitor is located in an area that does not contain fresh air.

The purge line can be up to to contain fresh air. To connect the purge line to the monitor, simply push the tubing into the Purge Air Inlet Port. If the purge line terminates outside the building, position the tubing so that no water or moisture can enter the line. For added protection from contaminates entering the monitor, a termination filter (P/N 3015-3420) must be attached to the end of this line.

100

ft (3

0.5 m)

int

(Page 4) to learn more about where to take

in length. The combined length of the sample line and

ts th

roug

h the gas-sample line can result

e monitor.

in length. Ideally, this line should terminate in an area known

Connecting the Exhaust Line

The exhaust line functions to carry the exhausted gas sample away from the monitor, and is required if the monitor is located in a confined, poorly ventilated area. If no purge line is used, it is a good idea to vent the exhausted gas sample away from the monitor to prevent erroneous readings due to improper zeroing of the detector.

The exhaust line can be up to location that is not exposed to the elements. Connect the exhaust line to the monitor by firmly pushing the tubing onto the Gas Sample Exhaust Port’s barbed fitting. Ensure that no loops or dips are present that could trap condensate. This is likely as outside air can be cooler than instrument. Note that the exhaust line does not require a termination filter.

100 ft

(30.5

in length. Ideally this line should terminate outdoors in a

Termination Filter (P/N 3015-3420)

Instruction 3015-4603

Page 12

Interior Schematic

LINE FUSES

1.0A, 250V, F

PURGE AIR IN

AC INPUT GROUND STUD

*NOTE: The plastic cable tie surrounding the air pump is to

ensure safe handling during shipping. Please remove before operating.

HYDROPHOBIC FILTER

AC INPUT TERMINALS

Interior Schematic

FACTORY DEFAULT SWITCH

EXTERNAL ALARM RELAY CONNECTOR

IR BENCH GAS IN

IR BENCH GAS OUT

4–20 mA (Output only DO NOT apply power!)

HYDROPHOBIC FILTER

*AIR SAMPLE PUMP

Instruction 3015-4603

Page 13

Electrical Wiring

The CO2MSZ uses a universal power supply that accepts AC inputs of between 100 and 240 Vac, 50/60 Hz, and has a power consumption of 15 Watts. It is highly recommended that the monitor be connected directly to the AC power source, preferably on its own circuit. The connection should be completed with UL

−

approved multi-conductor wire (14

Locate a convenient service knockout and install electrical conduit in the typical manner.

Locate the AC Input Terminals and Ground Stud on the inside of the monitor (Page 8).

Secure the incoming AC power neutral (white) and live (black) wires to the LINE 1 and LINE 2 terminals. Using the supplied crimp-on ring terminals, washers, and nuts, connect the incoming AC power ground wire (green) to the monitor’s AC Input Ground Stud, and then install a separate wire between the ground stud and the GND terminal.

WARNING:

shou

ld comp

Elec

trical installation should be p

ly with all ap

WARNING:

stud. Under no circums grou

nd. Doin

safety standards applicab

The AC powe

g so poses a pote

CAUTION:

void the war

Drillin

ranty. Please use knockouts provided

Instruction 3015-4603

18 AWG), rated 300 Vac at 105°C.

AC Power Connections

erformed by a certified electrician, and

plic

able N

EC/CEC and local electrical safety codes.

r groun

tances shou

d wire must first be

ld this monitor be operate

ntial sh

ock haza

rd, and is also a violation of electrical

connected to the monitor

d withou

t a protective

le to this type of equipment.

g holes in the CO2MSZ enclosure may damage the unit an

for electrical connections.

’s ground

d will

Page 14

Connecting External Alarms

Overview

The CO2MSZ includes four SPDT relays whose contacts are rated 2 A at 250 VAC (inductive) 5 A at 250 VAC (resistive). These relays are used for the connection of external alarm devices that are activated when the relay is energized. The relays are factory assigned to energize under the following conditions:

The alarm points of relays #1, #2, and #3 are set using the monitor’s LEAKLVL, SP

ACLVL function screens (Page 16).

Connection

Use any of the service knockouts to gain cable access to the interior of the monitor. Locate the External Alarm Relay Connector (Page 8). Secure the leads from the external alarm device and its power source to the connector as shown in the diagram below.

The diagram on Page 11 shows a typical alarm device being connected to Relay 1. Note how power to this device is being tapped off the monitor’s AC input.

Each relay may be connected as normally open (NO), or normally closed (NC). The relay contacts are rated 2 A at 250 VAC (inductive) 5 A at 250 VAC (resistive).

Power for the external alarm devices may be supplied from an external power source, or from the monitor’s AC input terminals.

Relay #1 Leak Alarm Point 500 ppm Relay #2 Spill Alarm Point 700 ppm Relay #3 Evacuate Alarm Point 1000 ppm Relay #4 Fault System Fault Event

External Alarm Relay Connector

ILLLVL

Instruction 3015-4603

, and

Page 15

Typical External Alarm Relay 1 Wiring

Jumper the ‘Neutral’ line of an external power source or the monitor’s AC input to the ‘Common’ terminals on the relay connector.

Connect one end of the strobe or horn to the ‘NO’ terminal of whichever level of alarm is appropriate for the application.

The other end of the strobe or horn is connected to the other leg of the external power source. For protection, install an in-line fuse of the appropriate size and design for the external alarm device being used.

4–20 mA Current Loop Interface

An external 4–20 mA monitoring device (e.g., chart recorder) can be connected to the CO2MSZ using a shielded-twisted-pair cable. Use any of the service knockouts to gain access to the interior of the monitor. Locate the 4 shorting wire from its terminals.

IMPORTANT!

isolator as an accessor

NOTE:

device is used. Failure to insert th

the wire leads from the external monitoring device to the 4–20 mA connector as shown in the diagram below, making sure that the polarity at this connector matches the wiring at the monitoring device.

The default current-to-ppm factor is set to 0.016 mA = 1 ppm, providing a measurement range 0 ppm (4 mA) to 1,000 ppm (20 mA). The current-to-ppm factor can be changed using the monitor’s function (Page 16).

To facilitate loop zero and span checking, note that when the set to 20 mA, and upon exiting this function the loop output is set to 4 mA.

−

20 mA Connector (Page 8), remove it from the circuit board, and then remove the resistor or

The 4-20mA ou

such as a Datafor

A 100 ohm, ¼ W resistor must be inserted into th

tput

is a "floating" gr

th par

ound ty

t n

umber DSCL

pe and must be used with a loop-powered

21-01.

e 4–20 mA connector if no ex

is re

sistor may cause a loop fault code <0010> to occur (Page

tern

al monitorin

19). Secure

LOOP

function is selected the loop output is

4–20 mA Current Loop Connecto r

CAUTION: N

extern device.

Instruction 3015-4603

ever apply power to the 4–20 mA Curre

al power supply. Connect

ly a load resistor and/or a

nt Loop Connector from an

floating

measur

ement

Page 16

Notes:

Instruction 3015-4603

Page 17

Operation

Front Panel Display and Control

Keypad Use these buttons to:

1) Enter function mode and then move arrow (>) on screen to the desired function

2) Scroll through data

3) Change a function’s value

MONITOR ON Light (Green)

1) Flashes during warm-up

2) Lights steady during normal operation

SYSTEM FAULT Light (Yellow) Flashes when any one or more of the faults listed on Page 19 occur

ALARM Light (Red)

Flashes when the detected gas level exceeds any of three preset alarm points

General Operation

Once the CO2MSZ has been installed, set up, and powered ON, the monitor will make measurements in the area being sampled for CO measurements are shown on the front panel display.

MEASURE 00955pk

340ppm CO2

In the example shown above, and that currently a concentration of 340 ppm is being detected. This display also indicates that a peak measurement of 955 ppm has been made.

An operator can reset the peak value to zero by pressing the ENTER

A log of up to 200 previous measurements can be viewed using the

gas without further operator intervention. The results of those

EASURE

indicates that the CO2MSZ is actively monitoring for CO2 gas,

button.

PPM LOG function (Page 15).

Display Screen

ENTER Press this button to:

1) Clear peak reading

2) Save a function screen’s displayed value

SILENCE / QUIT Press this button to:

1) Acknowledge a system fault or gas alarm by turning OFF the internal audible alarm and de-energizing the corresponding fault/alarm relay

2) Return to the previous screen without saving data when in the function mode

If the detected gas level exceeds the preset Leak, Spill, or Evacuate alarm point, then the monitor responds by turning ON the front panel

ALARM

If the internal audible alarm is turned ON, it too will activate (

(red) light and energizing the corresponding alarm relay.

AUDALRM

Page 16). Optional external alarm devices can be connected to the alarm relays to alert personnel that a Leak, Spill, or Evacuate alarm condition has occurred (Page 10). Pressing the front panel and turn OFF all alarm indicators with the exception of the front panel reactivate, however, if the alarm condition is not cleared within the time period set by the

SILENCE

button will acknowledge an alarm

ALARM

light. The alarm circuit will

SILENCE

function (Page 17). The ALARM light will turn OFF after the detected gas level goes below the lowest alarm point and after the

SILENCE

button is pressed.

Instruction 3015-4603

Page 18

If a system fault occurs (see Fault Code list on Page 19), the monitor responds by turning ON the front panel

SYSTEM FAULT

turned ON, it too will activate (

(yellow) light and energizing the fault relay. If the internal audible alarm is

AUDALRM

Page 16). An optional external alarm device can be connected

to the fault relay to alert personnel that a system fault has occurred (Page 10). Pressing the front panel

SILENCE

front panel cleared within the time period set by the

button will acknowledge the fault and turn OFF all alarm indicators with the exception of the

SYSTEM

FAULT light. The alarm circuit will reactivate, however, if the fault condition is not

SILENCE

function (Page 17). The SYSTEM FAULT light will

turn OFF only after the cause of the fault has been eliminated.

A log of the alarm and fault events can be viewed using the monitor’s

ALARMS and FAULTS

function

(Page 15).

Display Screens

Initial Power Up

When the CO2MSZ is first powered up all front panel lights are turned ON, and a splash screen appears showing the monitor’s firmware revision level. After a brief moment the with the front panel

BACHARACH

VERSION x.xx

The monitor takes 15 minutes to warm up; after which, the MONITOR ON

Display

Data

Data Display Screen

MEASURE 00955pk PURGE 00955pk

340ppm CO2

During normal operation, the following three functions:

ASURE

example screens shown above, the monitor is currently detecting 340 ppm of CO measurement of 955 ppm has occurred.

To reset the peak value to zero, press the ENTER button.

PURGE is displayed when the monitor is resetting its infrared detector to a baseline ppm value using

fresh air that is being drawn in through the Purge Air Inlet Port. This purging process is performed on an “as needed” basis, which is normally once every 6 to 8 minutes.

PRES CHK

ensure the accuracy of the gas measurement under varying atmospheric conditions. This pressure check is performed every 30 minutes.

screen is displayed.

indicates that the monitor is actively measuring the CO2 gas level at the sample point. In the

is displayed when the monitor is performing an atmospheric pressure check, which is done to

NITOR ON

light (green) blinking.

WARM UP

340ppm CO2

Data Display

rm Up

screen is display along

light glows steady and the

PRES CHK 00955pk

340ppm CO2

screen shows when the monitor is performing the

gas, and that a peak

Instruction 3015-4603

Page 19

Function Screens

The Function screens are used to display stored data and to set up the monitor.

From the Data Display Next, use the press the

>PPM LOG FAULTS

ALARMS DIAGNOS

>GASTYPE SPILLVL

LEAKLVL EVACLVL

Keypad

TER

button to select that function.

screen, press any

buttons to move the arrow (>) on the display next to the desired function, and then

>LOG INT AUDALRM

LOOP CLOCK

>SILENCE ZONETMP

SQUELCH CAL

Keypad

button to display the first

>P-CHK

Function Menu

screen.

Once a function has been selected, use the parameter associated with that function. Press

QUIT

button to return to the previous screen without saving.

If no buttons are pressed within 90 seconds after selecting a function, the monitor will return to the Data

Display

screen.

PPM LOG – Contains records of the last 200 measurements. Each

record shows the measurement’s date, time, and ppm level. The interval at which the measurements are logged is determined by the function.

Use the Keypad Up and a factor of 1. Use the number by a factor of 10. Press

ght

Down

and

QUIT

buttons to change the record number by

Left

the example on the right, record #025 shows that a level of 995 ppm was measured on 07/05/07 at 15:35.

The PPM Log can be cleared as described in Section PPM Log, Alarm & Fault Data (Page 20).

ALARMS – Contains records of the last 30 alarm events, with the

monitor’s most recent alarm being shown when the displayed. After 30 events have been recorded, the newest record overwrites the oldest. Each record displays either LEAK, SPILL, or EVAC including the date and time the alarm occurred. Use any of the buttons to scroll through the other alarm records. Press the previous screen. Refer to (Page 18).

Work

ing with Gas

The ppm levels at which alarms occur are set using the LEAKLVL,

SPILLLVL

, and EVACLVL

functions.

In the example on the right, record #03 shows that a spill event occurred on 07/10/07 at 15:06.

FAULTS – Contains records of the last 30 fault events, with the monitor’s

current fault status being shown when the After 30 events have been recorded, the newest record overwrites the oldest. Each record lists an event’s numeric fault code plus the date and time the fault occurred. Use any of the the other fault records. Press to

Workin

g with System Faults

In the example on the right, record #15 shows that a Purge Flow Fault <1000> occurred on 07/10/07 at 12:37.

QUIT

to return to the previous screen. Refer

(Page 18).

Keypad

to scroll through the displayed data or to change a

TER

to save newly entered parameters. Press the

G INT

buttons to change the record

to return to the previous screen. In

Clearing

e Stored

Alarm screen is first

Keypad

QUIT

to return to

Alarms

Fault

screen is first displayed.

Keypad

buttons to scroll through

#025 995PPM @

07/05/07 15:35

#03 SPILL @

07/10/07 15:06

#15 <1000> @

07/10/07 12:37

Instruction 3015-4603

Page 20

DIAGNOS – Enters the diagnostic function. Press the

Keypad

Refer to

button to toggle between the monitor’s two diagnostic screens.

Working with th

e DIA

GNO

S Function (Page 21).

Up Arrow

GASTYPE – CO

choose from, therefore CO2 is the only gas type listed. Press return to the previous screen.

gas monitors do not have a library of other gases to

QUIT to

LEAKLVL – Sets the Leak Alarm level, adjustable from 1 to 1999 ppm.

Factory default is 500 ppm. The Leak Alarm level cannot be set higher than either the Spill or Evacuate Alarm levels. Use the the desired Leak Alarm level, and then press

ENTER

and return to the previous screen.

Keypad

to set

to save that level

SPILLLVL – Sets the Spill Alarm level, adjustable from no lower than the

Leak Alarm level to a maximum value of 1999 ppm, but not higher than the Evacuate Alarm level. Factory default is 700 ppm. Use the the desired Spill Alarm level, and then press

ENTER

and return to the previous screen.

Keypad

to set

to save that level

EVACLVL – Sets the Evacuate Alarm level, adjustable from no lower

than the Spill Alarm level to 1999 ppm. Factory default is 1000 ppm. Use the

Keypad

ENTER

to set the desired spill level alarm level, and then press

to save that level and return to the previous screen.

LOG INT – Sets the interval at which measurements are logged to

memory from 1 to 9999 minutes. Factory default is 10 minutes. The logged measurements can be viewed using the

Keypad

to enter the desired value, and then press

value and return to the previous screen.

PPM LOG

function. Use the

ENTER

to save that

LOOP – Adjusts the loop factor of the 4–20 mA current loop. Factory

default is 0.016 mA per ppm, which provides an output range of 0 ppm (4 mA) to 1,000 ppm (20 mA). Use the factor, and then press previous screen.

ENTER

to save that value and return to the

Keypad

To facilitate loop zero and span checking, note that when the function is selected the loop output is set to 20 mA, and upon exiting this function the loop output is set to 4 mA.

to set the desired loop

LOOP

AUDALRM – Allows the monitor’s internal audible alarm to be

associated with any function of the monitoring system. Factory default is OFF. Use the then press

Audible Alarm Settings: OFF, ANY ALARM, SYSTEM FAULT, LEAK ALARM,

SPILL ALARM, EVAC ALARM, MONITOR STOPPED

NOTE: MONI monitor is

Keypad

ENTER

TOR STOPPE

no lo

nge

to select the desired audible alarm function, and

to save that value and return to the previous screen.

r fu

nctioning

D indicate

s there

correctly.

is a

itical

system fault, and th

4.26500v <0000>

24.5cD 14.00psi

0.4ppm 0.00

0.00002au 4.260v

SELECT GAS TYPE

CO2

EDIT LEAK LEVEL

500 PPM

EDIT SPILL LEVEL

700 PPM

EDIT EVAC LEVEL

1000 PPM

LOG INTERVAL IS

0010 min

EDIT LOOP FACTOR

0.016 ma/PPM

AUDIBLE ALARM IS

OFF

Instruction 3015-4603

Page 21

CLOCK – Sets the monitor’s date and time. Use the

the correct date and time, and then press

ENTER

Keypad

to enter

to save those values and return to the previous screen. Time is displayed in a 24 hour format, while the date is displayed as mm/dd/yy.

SILENCE – Used to enter a length of time for which the internal

audible alarm and the external alarm are turned OFF when the front panel

SILENCE

(5 minutes). If the cause of the alarm/fault has not been cleared at the end of this time period, the internal audible alarm and the external alarm device are reactivated. Use the and then press screen.

button is pressed. The factory default is 300 seconds

Keypad to enter the desired time period,

ENTER

to save that value and return to the previous

SQUELCH – Sets a value of between 0.0 and 100 ppm that prevents

the display of measurements below that value. Factory default is 0 ppm. For example, if the squelch setting is set to 5 ppm, then the monitor will not display measurements that are below that value. Use the to enter the desired value, and then press

ENTER

to save that value and

return to the previous screen.

Keypad

ZONETEMP – Used to enter the temperature of the area being

monitored in °C, thus giving a more accurate ppm reading. The factory default is 25°C. Use the then press

ENTER

eypad

to enter the desired temperature, and

to save that value and return to the previous screen.

CAL – Used to change the monitor’s calibration factor. This function is to

be used ONLY with instructions from a Bacharach Service Center. Factory default is 1.000.

P-CHK – This

pressure and the stored ambient pressure in psia, along with the difference between these two pressures and the current fault code. Refer to

with the P-CHK Function

Instruction 3015-4603

Pressu

re Ch

eck

function displays the current manifold

Workin

(Page 20).

SET DATE & TIME

07/10/07 15:30

SILENCE TIMEOUT

0300 sec

SQUELCH BELOW

5 ppm

TEMP AT ZONE =

25 degC

R717 CALFACTOR

1.000

14.72 * AMB14.81

0.09dif <0000>

Page 22

Working with Gas Alarms

Overview

If the CO2 ppm level in the area being monitored exceeds its preset Leak, Spill, or Evacuate Alarm level (Page 16), the CO2MSZ will detect this alarm condition and turn ON the front panel Additionally, an external alarm device may activate and the monitor’s internal audible alarm may sound if those features have been enabled (Pages 10 & 16).

Clearing / Silencing a Gas Alarm

Once the gas-alarm circuit has been triggered all alarm indicators remain turned ON, even after the detected gas level returns to normal. Press the cause of the alarm has been cleared and the detected gas level has dropped below all alarm levels.

Pressing the and all external alarm devices that are connected to the alarm relays to turn OFF for a period of time as set by the indication that an alarm condition still exists, but will automatically turn OFF once the gas level returns to normal. The alarm circuit will reactivate at the end of the silence period if the detected gas level is still above an alarm level.

Viewing the Gas Alarm Log

From the Data Display

ALARMS

The alarm log shows the type of alarm (LEAK, SPILL, or EVAC), plus the date and time it occurred. If CLEAR is displayed, this indicates that an alarm was acknowledged at the date and time shown. Immediately after selecting the event is displayed. In the example on the right, record #03 shows that a Spill Alarm occurred on 07/10/07 at 15:06. If more than 30 alarm events have occurred, then the newest event overwrites the oldest.

The Alarm Log can be cleared as described in Section PPM Log, Alarm & Fault Data (Page 20).

Working with System Faults

Overview

If a system malfunction occurs, the CO2MSZ will detect the problem and turn ON the front panel

SYSTEM FAULT

internal audible alarm may sound if those features have been enabled (Pages 10 & 16).

Clearing / Silencing a Fault Alarm

The

SYSTEM FAULT

the fault has been eliminated.

Pressing the external alarm device that is connected to the fault relay to turn OFF for a period of time as set by the

SILENCE

reminder that a fault condition still exists. The alarm circuit will reactivate at the end of the silence period if the cause of the fault has not been corrected. The once the fault has been cleared.

SILENCE

button while a gas-alarm condition still exists causes the internal audible alarm

function (Page 17). The front panel ALARM

button to clear all gas-alarm indicators after the

screen, use the

function. Then press ENTER to display the alarm log.

ALARM function, the most recent alarm

Keypad

buttons to place the arrow (>) on the display next to the

Clearing the Stored

(yellow) light. Additionally, an external alarm device may activate and the monitor’s

light and all other fault indicators will automatically turn OFF after the cause of

SILENCE

function (Page 17). The front panel

button while a fault condition still exists causes the internal audible alarm and the

SYSTEM FAULT

ALARM

light remains ON, however, as an

#03 SPILL @

07/10/07 15:06

light remains ON, however, as a

light will automatically turn OFF

light (red).

Instruction 3015-4603

Page 23

Viewing the Fault Log

From the Data Display

FAU

LTS

function. Then press ENTER to display the fault log.

screen, use the

Keypad

buttons to place the arrow (>) on the display next to the

The fault log shows the monitor’s current fault status. If the fault is still present when the

ULTS

function is selected, then the current cause of the

fault is displayed along with the date and time it occurred. If the cause of the fault has been cleared, then the fault log will show <0000> along with the

ypad

date and time the fault was cleared. Use the

buttons to scroll through the fault log. In the examples shown on the right, record #03 shows that a Zone Flow Fault (fault code <0800>) occurred on 07/12/07 at 08:17, while record #04 shows that the fault was cleared on 07/12/07 at 8:30.

The cause of the fault is identified by a numeric fault code. To convert the fault code into a text description of the fault, first press the and then use the

Keypad

buttons to scroll through the display until the text

ENTER

button

description of the fault appears. If the fault code is a combination of two or more faults, then continue to use the

Keypad

buttons until all fault text descriptions have been displayed. For example, the fault code <1800> represents the combination of both a Zone Flow <0800> and a Purge Flow <1000> fault as shown on the right.

The Fault Log can be cleared as described in Section

Clearing

e Stored

PPM

Log, Alarm & Fault Data (Page 20).

Fault Codes

FAU

LT CO

A fault code of <1800> indicates that both a Purge Flow Fault <1000> and a Zone Flow Fault <0800> have occurred.

<0001> Box Temp

temperature is outside normal range (or IR detector has failed). Check that the monitor is not being subjected to extreme temperatures. Verify that the ventilation holes are not obstructed. Use the DIAGNOS function (Page 21) to check the Box Temperature.

<0002> Bench

bench is outside normal operating range (or IR detector has failed). Check that the monitor is not being subjected to extreme temperatures.

<0004> - Ma

manifold pressure is outside normal operating range (or IR detector has failed). Enter the function(Page 21) and record ALL data. Call the with this information for further instructions.

DES ARE

Temperature Fault

nifold Pressure Fault:

ADDITIVE. For example:

erature Fault:

DIAG

Enclosure

: Optical

The

NOS

<0200> Gain Set Fault:

sequence has failed. This fault will only occur on first boot up or after a firmware upgrade. Call the factory for further instructions.

<0400> A/D Fault:

analog-to-digital circuitry. Contact the factory with this information for further instructions.

<0800> Zon

in the gas-sample line or exhaust line; a blocked external termination filter; a blocked internal hydrophobic filter (Page 8); a failed pump.

<1000> Purge Flow Fa

in the purge line; a blocked external termination filter; a blocked internal hydrophobic filter (Page 8); a failed pump. Once the blockage has been cleared, the monitor will return to normal operation after the monitor completes a purge cycle.

<4000> Zero Fault:

e Fl

voltage is out of tolerance. Enter the

<0010>

open, or there is a high resistance in the circuit. Check the wiring to the load/monitoring circuit. If this feature is not being used, a 100 ohm resistor must be

connected to the 4–20 mA connector (Page 11).

Loop

Fault:

The 4–20 mA current loop is

function (Page 21) and record ALL data. Call the factory with this information for further instructions.

<8000> Clipping Fa

may be out of tolerance. Use the function

<0100> Zero Fi

lter Fa

ult:

There is CO2 gas present

in the purge air. Locate the monitor in an area containing fresh air, or install a purge air line.

Refer to Loca

ting the Monitor

(Page 5).

(Page 21) to check the IR detector voltage. Call the factory with this information for further instructions.

Instruction 3015-4603

#03 <0800> @

07/12/07 08:17

#04 <0000> @

07/12/07 08:30

FAULT CODE<1800>

12 ZONE FLOW

FAULT CODE<1800>

13 PURGE FLOW

The digipot autotune

A fault has occurred in the

ow Fault:

The IR detector’s output

ult:

Check for: A kink

ult:

Check for: A kink

IAGNOS

The detector voltage

DIAGNOS

Page 24

Clearing the Stored PPM Log, Alarm & Fault Data

Up to 200 gas measurements, and 30 alarm and fault events are stored by the monitor.

To clear stored data, first display the data to be cleared by using the PPM LOG, ALARMS function (Page 15). Next, press the time. A single, long tone should be heard when the data has been successfully cleared.

Right Arrow Keypad

and

ENTER

buttons at the same

or FAULTS

Working with the P-CHK Function

Overview

The

P-CHK

troubleshooting a flow fault problem. The monitor will trigger a flow fault if the pressure drop from ambient is less than 0.2 psi during a purge cycle, and 0.5 psi during a measurement cycle.

Keypad Functions

From the Data Display

P-CHK function. Then press

The

Left Arrow

when the purge valve is open (purging).

The

Down Arrow Keypad

Pressing the pressure shown on the right (must be done with the pump OFF).

Screen Display

14.72 * AMB14.81

0.09dif <0000>

Man

ifold

Stored Ambient Pressure

Pressure Difference

stored ambient pressure.

Fault Code

Purge Valve As

and closed by pressing the purge valve is

function (Pressure Check Function) (Page 17) is useful to a service technician for

screen, use the

ENTER

Keypad button toggles the purge valve open and closed. An asterisk () appears

button toggles the pump ON and OFF.

ENTER

button stores the current manifold pressure shown on the left to the ambient

Keypad

to display the Pressure screen.

buttons to place the arrow (>) on the display next to the

Manifold Pressure

Pressure Difference Fault Code

Pressure – Current manifold pressure in psia.

– Stored ambient pressure in psia.

– The difference between the current manifold pressure and the

– Current fault code (Page 19).

terisk (*) – When viewing the

open

ft Arro

w Keypad button. An asterisk appears on the display when the

Stored Ambient Pressure

Pressure

screen, the purge valve can be opened

Instruction 3015-4603

Page 25

Working with the DIAGNOS Function

Overview

The

DIAGNOS function displays sensor data and status information useful to a service technician for

troubleshooting various fault conditions. Explanations of the data shown in these screens are given below.

Keypad Functions

From the Data Display

DIAGNOS

Press the Up

First Diagnostic Screen

4.26500v <0000>

24.5cD* 14.72psi

0.00250n <0000>

29.5cB* 14.72psi

In the first diagnostic screen, the user can toggle between displaying the Bench Voltage / Noise and Detector Temperature / Box Temperature by pressing the

Bench Voltage

gas this value can range from 3.90000V to 4.50000V.

Noise –

reading is valuable mainly when CO

Detector Temperature

Box Temper

Fault Code

Manifo

Purge Keypad

Second Diagnostic Screen

0.4ppm 0.00

0.00002au*4.260v

M L

referenced to standard temperature and pressure.

Average Ab

0.00000 au. When sampling CO

µMoles

Detector Voltage Diagnostic

Purge

closed by pressing the purge valve is

Instruction 3015-4603

screen, use the

function. Then press ENTER to display the first of two

Arrow Key

pad

button to toggle between the

Keypad

buttons to place the arrow (>) on the display next to the

First

Diagnostic

and

Second Diagnostic

screens.

screen.

Bench Voltage Fault Code

Detector Temperature °C * Manifold Pressure

Noise Fault Code

Box Temperature °C

Manifold Pressure

Right Arrow K

eypad

button.

– This is the current peak-to-peak output of the IR detector. In the absence of CO2

The Noise value is a 16 point running average of the noise portion of the IR detector’s output. This

gas is NOT present.

– This is the current detector temperature in °C.

ature

– This is the current internal enclosure temperature in °C.

– Current fault code. A value of <0000> indicates that no faults are being detected.

ld Pressure – Current manifold pressure in psia.

Valve As

button. An asterisk appears on the display when the purge valve is

ter

isk (*)

– The purge valve can be opened and closed by pressing the Le

open

ft A

rrow

PPM Level µMole/Liter

Avg. Absorption Unit * Detector Voltage

evel – Parts Per Million Level is the current detected gas level, and is the volume concentration

sorption Unit

/Liter

– This is the absolute concentration in micro-moles per liter of CO2 gas.

screen.

Valve As

open

– This is a running average of the IR detector’s bench voltage as displayed in the

ter

isk (*) Lef

– This is the optical absorbency. In the absence of CO2 gas the absorbency is

gas, its value varies proportionally with the gas concentration.

– When viewing the diagnostic screen, the purge valve can be opened and

t Arrow Ke

ypad

button. An asterisk appears on the display when the

First

Page 26

Working with the Calibration Function

Overview

If greater than standard accuracy is desired, the factory’s default calibration factor of 1.000 may be adjusted by performing the calibration procedure as described below, and then selecting the monitor’s

CAL

function to enter the new calibration factor.

IMPORTANT!

remain within the factory-calibrate algorithms adjust for temperature drift, IR source agin factory accurac

Calibration Procedure

The calibration factor is determined by sampling a known dilution of CO2 gas. The sample must be prepared to less than half the desired accuracy and the concentration must be corrected for ambient temperature and pressure at the time of measurement.

Calibration is best performed at or near full scale, it can however, be done at any concentration and ideally in the range where maximum accuracy is desired down to, but not below, 340 ppm.

A cylinder of a certified calibration gas must be used to ensure sampling occurs at ambient conditions. A minimum sample size of 5 liters is required.

The CO2MSZ should be operating for at least one hour prior to performing a calibration.

Prepare the CO2MSZ for sampling by using the Also, use the

With the CO2MSZ operating normally, connect the gas-sample bag directly to the gas-inlet port and allow the monitor to sample the entire bag. When sampling is complete, view the logged ppm values using the

PPM LOG

new calibration factor is computed by dividing the known gas concentration value by the measured value. Typically this number will be between 0.95 and 1.05. Use the new calculated calibration factor

Adjusting Calibration Factor

From the Data Display

CAL

function. Then press

CO2 CALFACTOR

1.000

Changi

ng t

he cali

specifications.

bration fact

d ac

curacy indefin

or will

VOI

D the fa

itely an

g, and pre

ctory

cali

bratio

n. Typically, the monito

d no calibration is required. Comple

ssure changes in order to keep the unit

r wi

x software

with

CAL

function to set the calibration factor to 1.000.

LOG INT function to set the log interval to 1 minute.

function. If the bag was large enough for multiple samples, average the most stable ones. The

CAL function as described below to enter the

screen, use the

ENTER to display the

Keypad

buttons to place the arrow (>) on the display next to the

Calibration

screen.

With the Calibration screen displayed, use the Keypad

factor. Press

ENTER

to save this value.

buttons to enter the new calibration

Instruction 3015-4603

Page 27

Maintenance

Warnings and Cautions

WARNING: Always disc

CAUTION:

electric components that can be easily components.

When working inside the monitor, be very careful not to dislodge any

al wiring

or pneumatic tu

onnect AC power before working inside

bing. Th

damaged. Be careful not to touch or

e CO2MSZ contains se

the monitor.

nsitive electr

disturb any

onic

of these

Hydrophobic Filters

Hydrophobic Filters (Page 8) located in both the gas-sample and purge lines prevent water from entering the IR detector. A zone flow fault will occur (fault code <0800>) if the gas-sample filter becomes blocked, while a purge flow fault will occur (fault code <1000>) if the purge filter becomes blocked. Replace the appropriate filter as required (P/N 07-1650).

Servicing Air Lines & Termination Filters

The gas-sample line and the optional purge and exhaust lines should be periodically checked for obvious signs of kinks, damage, and contamination. Replace the tubing as required (P/N 304-2742).

The gas-sample line and purge-line termination filters prevent dust and dirt from entering the monitor. Both of these filters should be periodically checked and replaced when there are obvious signs of contamination.

A zone flow fault will occur (fault code <0800>) if the gas-sample line filter becomes blocked, while a purge flow fault will occur (fault code <1000>) if the purge-line filter becomes blocked.

To service the filter, simply remove it from the line and replace it with a new one (P/N 3015-3420).

Fuses

The CO2MSZ is protected from electrical damage by two, 1 A, 250 V, type “F” fuses (Page 8). Carefully remove the fuses from their fuse clips and visually inspect each fuse for damage. Replace the fuses as required (P/N 04-2620).

Clock Battery

The Clock Battery (Page 8) maintains the correct date and time when AC power is not applied to the monitor. Replace this battery about every 5 years (P/N 204-0020).

Sample Pump

The Sample Pump (Page 8) draws the gas sample into the monitor, through the IR detector, and discharges the sample out the monitor’s exhaust port. When replacing the pump, remove its inlet and outlet tubing, disconnect the AC power wires from the pump itself, and remove pump from monitor. Install a new sample pump (P/N 3015-5176).

Instruction 3015-4603

Page 28

Replacement Parts & Optional Accessories

Replacement Parts

Item Description Part Number

CO2MSZ, complete assembly 3015-4601

Battery, Panasonic BR2032, 3 V (for Main PCB Board) 0204-0020*

Hydrophobic Filter 0007-1650

Termination Filter (gas-sample & purge lines) 3015-3420

Fuse, 1A, 250 VAC, Type “F” 0004-2620

Pump 3015-5176

Tubing, ¼” OD (specify length when ordering) 0304-2742

Optional Accessories

Item Description Part Number

120 VAC Surge Protector 3015-4121

4-20 mA Surge Protector 3015-4123

Audible/Visual Alarm, 120 VAC 3015-3076

*WARNING: To preserve agency approvals and maintain the safety integrity of the monitor, the

battery must be replaced with the specified Bacharach replacement part.

Instruction 3015-4603

Page 29

Service Centers

Replacement parts and service can be obtained by contacting one of the following Bacharach Service Centers.

United States

Bacharach, Inc. 621 Hunt Valley Circle New Kensington, PA 15068 Phone: 724-334-5051 Fax: 724-334-5723 Email: help@mybacharach.com

Canada

Bacharach of Canada, Inc. 250 Shields Court Unit #3 Markham, Ontario L3R 9W7 Canada Phone: 905-470-8985 Fax: 905-470-8963 Email: bachcan@idirect.com

México

Bacharach de México Playa Regatas No. 473 Tercer Piso Col. Militar Marte Delegación Iztacalco, 08830 México D.F. México Phones: +52-555-634-7740 +52-555-634-7741 FAX: +52-555-634-7738 Email: bacharachservicio@bacharach.com.mx

Instruction 3015-4603

Page 30

Specifications

Product Type ........................ Single zone infrared monitoring system for low level continuous

Measuring Range................. 0 to 2,000 ppm CO

monitoring of CO

Detector Type....................... Infrared, Non-Dispersive

Coverage ............................... Single zone

Monitoring Distance ............ Up to 500 ft (152.4 m) maximum gas-sample line length

Front Panel .......................... 3 Indicator lights:

MONI

TOR ON

or flashing during warm-up

SYSTEM FAULT ALARM

– Red light ON when the gas level is above an alarm setting

Alarms .................................. Four SPDT relays are provided (rated 2 A, 250 VAC (inductive) 5 A 250 VAC

(resistive)):

three assigned to ppm level alarms – one assigned to system faults

Internal audible alarm programmable for any of the following conditions: OFF, Any Alarm, System Fault, Leak Alarm, Spill Alarm, Evacuation Alarm, Monitor Stopped

Sensitivity ............................ 10 ppm, minimum detection limit

Accuracy ............................... ±5 ppm from 25 to 100 ppm, or ±10% of reading from 100 to 2,000 ppm

Respo n se Ti m e /Flow Rat e .. . 0 to 105 seconds; D epende n t o n g a s- sa m pl e li ne le ng th

Warm-up Time..................... 15 minutes

Temperature Drift ............... 1.5 ppm per °C between purge cycles

gas

– Green light ON when the unit is operating normally,

– Yellow light ON when there is a system fault

System Noise ....................... Less than 40dB(A) at 10 ft (3 m)

Conditioned Signal .............. 4

−

20 mA current loop

Power Safety Mode .............. Fully automatic system reset; all programmed parameters retained

Operating Temperature ...... 32 to 122°F (0 to 50°C)

Storage Temperature ..........

−

4 to 122°F (−20 to 50°C)

Ambient Humidity............... 5 to 90% RH, non-condensing

Altitude Limit ...................... 6,562 ft (2,000 m)

AC Power.............................. 100 to 240 Vac, 50/60 Hz

Power Consumption ............ 15 Watts

Size/Weight .......................... 7.5"H x 13.5"W x 3.625"D / 5 lbs.

Certification ......................... CE Mark

Warranty .............................. 2 Years from date of shipment

Instruction 3015-4603

Page 31

Instruction 3015-4603

Notes:

Page 32

Headquarters:

621 Hunt Valley Circle, New Kensington, PA 15068

PH: 724-334-5000 • Toll Free: 800-736-4666 • FAX: 724-334-5001

Website: www.mybacharach.com • E-mail: help@mybacharach.com

Printed in U.S.A. ® Registered Trademark of Bacharach Inc.