Black & Decker MULTI-GAS DETECTORS Operator`s manual

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BW DEFENDER

MULTI-GAS DETECTOR

Operator’s Manual

Order Numbers: D4-2002

D2-2002

FOR SALES AND SERVICE CALL

1-800-663-4164 North America

+44 (0) 1869-233004 Europe

+1-403-248-9226 Other Countries

Fax: +1-403-273-3708 all countries

Email: [email protected]

Web Site: www.gasmonitors.com

BW Technologies BW Technologies (America) BW Technologies (Europe)

2840 - 2 Ave. SE 3279 West Pioneer Parway 101 Heyford Park

Calgary, AB T2A 7X9 Pantego, TX. 76013 Upper Heyford, Oxfordshire OX25 5HA

Canada USA United Kingdom

English D1218/3

Back Cover

Front Cover

Page 1

IMPORTANT

PLEASE READ THIS ENTIRE MANUAL AND FOLLOW THE INSTRUCTIONS AND

RECOMMENDATIONS CONTAINED HEREIN IN ORDER TO ENSURE PROPER

AND SAFE OPERATION AND FUNCTIONING OF THE BW DEFENDER MULTI-

GAS DETECTOR.

USE OF THE BW DEFENDER REQUIRES A FULL UNDERSTANDING OF THE

OPERATING AND MAINTENANCE INSTRUCTIONS. IT IS ONLY TO BE USED

FOR THE PURPOSES SPECIFIED IN THE MANUAL.

INTENDED USE: THE BW DEFENDER IS A MULTI-GAS PERSONAL DETECTOR

INTENDED FOR AMBIENT AIR MONITORING.

WARNING: Substitution of components may impair Intrinsic Safety.

AVERTISSEMENT: La substitution de composants peut compromettre la securite intrinseque.

CAUTION: Do not change or charge batteries in a hazardous location.

CAUTION: The LEL range of this monitor is factory calibrated to methane. If monitoring a different combustible gas, calibrate the combustible range of the monitor to the appropriate

CAUTION: FOR SAFETY REASONS THIS EQUIPMENT MUST BE OPERATED

AND SERVICED BY QUALIFIED PERSONNEL ONLY. READ AND

UNDERSTAND INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING

AND SERVICING.

CAUTION: Extended exposure of the BW Defender to certain concentrations of combustible gases and air may stress a detector element, which can seriously affect its performance. If an alarm occurs due to high concentration of combustible gases, recalibration should be performed, or if needed the sensor replaced.

Prior to each day's usage sensitivity must be tested on a known concentration of the target combustible gas (methane, etc.) equivalent to 25-50% of full scale concentration (accuracy must be with 0 to +20% of actual). Accuracy may be corrected by recalibrating the instrument.

The BW DEFENDER and motorized sampling pump is Approved by:

CSA to U.S. and Canadian Standards - Class I, Div. 1, Groups A, B, C, D;

Class I, Zone 0, Gr. IIC. Cenelec Certified by LCIE – EEx ia d IIC. CE declared for

European conformity. ABS (American Standards Type Approval) to become part of a Classified Vessel. Certified for use in Australia - Ex ia s IIC for Zone 0 hazardous areas.

SAA

Limited Warranty & Limitation of Liability

BW Technologies warrants this product to be free from defects in material and workmanship under normal use and service for a period of two years, beginning on the date of shipment. Parts, product repairs and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a BW Technologies authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in BW Technologies’ opinion, has been misused, altered, neglected or damaged by accident or abnormal conditions of operation or handling. BW

Technologies warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. BW

Technologies does not warrant that software will be error free or operate without interruption.

BW Technologies authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of BW Technologies. Warranty support is available if product is purchased through a

BW Technologies authorized sales outlet or Buyer has paid the applicable international price.

BW Technologies reserves the right to invoice Buyer for importation costs of repair/replacement parts when product purchased in one country is submitted for repair in another country.

BW Technologies’ warranty obligation is limited, at BW Technologies’ option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is returned to a

BW Technologies authorized service center within the warranty period.

To obtain warranty service, contact your nearest BW Technologies authorized service center or send the product, with a description of the difficulty, postage and insurance prepaid (FOB

Destination), to the nearest BW Technologies authorized service center. BW Technologies assumes no risk for damage in transit. Following warranty repair, the product will be returned to

Buyer, transportation prepaid (FOB Destination). If BW Technologies determines that the failure was caused by misuse, alteration, accident or abnormal condition of operation or handling,

BW Technologies will provide an estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping

Point).

THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL

OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY

IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

BW TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR

CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER ARISING

FROM BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY

OTHER THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.

BW Technologies Ltd. BW Technologies (America) BW Technologies (Europe)

242, 3030 – 3 rd Ave. NE 2307 Oak Lane, Suite 2A100 101 Heyford Park,

Calgary, AB T2A 6T7 Grande Prairie, TX 75051 Upper Heyford, Oxfordshire OX25 5HA

Canada USA United Kingdom

Page 2

D1218/3 Nov/00 - Warranty (GAMax, addresses) - Feb 25, 2001 (warranty: unhyphenate, omit UK/EU address “ltd.”, UK postal code)

SPECIAL WARNINGS

Through engineering, design and testing as well as rigid manufacturing techniques and quality control, BW Technologies supplies the finest gas detection instrumentation available. The BW DEFENDER is designed to provide optimum performance and lower maintenance in rugged industrial use. The user, though, must recognize responsibility for maintaining the instrument in operational condition, ensuring proper operation and long-term use.

1.

Calibrate the detector before first-time use, and then at least once every 90 days.

2.

It is recommended that the accuracy of the BW Defender be checked with known concentration calibration gas before each day’s use and immediately after any know exposure to contaminants.

3.

The LEL sensor is factory calibrated to methane. If monitoring a different combustible gas, calibrate the sensor using the appropriate gas.

4.

BW recommends that a calibration check on a regular schedule, one at least every 30 days.

5.

Do not expose BW DEFENDER to electrical shock and/or severe continuous mechanical shock.

6.

Do not attach any other piece of equipment to the BW DEFENDER except those supplied by BW for the BW DEFENDER.

7.

Do not operate or attempt to modify the BW DEFENDER to operate on any battery or power source except the battery approved by BW Technologies.

8.

Do not attempt to disassemble, adjust or service the instrument unless instructions are contained in the manual for that procedure and/or that part is listed as a replaceable part. Use only BW DEFENDER replaceable parts.

9.

Do not immerse in liquid OR use high power sprays on the instrument.

10. Do not allow the sensor screens to become dirty or clogged.

11. BW Technologies gas detection instruments are primarily SAFETY devices for the protection of personnel and facilities and must always be “ready”. With proper maintenance the BW DEFENDER will provide many years of service. The user must assume all liability for misuse of BW Technologies gas detection instruments.

12. The instruments warranty will be voided if customer personnel or third parties damage the instrumentation during repair attempts.

Because BW Technologies is constantly developing and improving its products line, we reserve the right to change specifications without notice.

35

BW DEFENDER Operator's Manual

TABLE OF CONTENTS

Features

.............................................................................................................. 1

Order Numbers and Gases

................................................................................ 3

Getting Started

Power ............................................................................................................... 4

Battery (Insertion and Removal)

Wrist Strap

BW DEFENDER Keypad

Display Icons

............................................................................. 5

......................................................................................................... 6

...................................................................................... 6

...................................................................................................... 7

Operation

Activating the Detector ......................................................................................... 8

Deactivating the Detector ...................................................................................... 9

Backlight Display

Battery Test

................................................................................................. 9

........................................................................................................ 10

Auto-Shutdown ................................................................................................... 10

Accumulated Exposure Levels (TWA and PEAK Exposure) ........................................ 11

Description of Alarm Setpoints ............................................................................... 12

Audible & Visual Gas Alarm Patterns

Low Battery Alarm

..................................................................... 13

............................................................................................... 14

Missing Sensor Alarm .......................................................................................... 14

Confined Space Entry ........................................................................................ 15

Motorized Sampling Pump: Features and Installation ................................................. 16

Operation and Low Flow Alarm

Built-in Water Trap

Manual Aspirator Pump

......................................... 17

......................................................... 18

........................................................................................ 19

Daily Operation ................................................................................................... 20

Maintenance

Auto Zero for all Sensors

Password Protection

BW DEFENDER Care

...................................................................................... 21

............................................................................................ 21

Calibration

Sensor Replacement

.......................................................................................... 22

......................................................................................................... 23

Adjusting The Alarm Setpoints ............................................................................... 24

........................................................................................... 26

Field Options

Confidence Beep Enable ...................................................................................... 27

2 Gas to 4 Gas BW DEFENDER Upgrade ............................................................... 28

Troubleshooting Guide ...................................................................................... 29

Operating Specifications .................................................................................. 31

Accessories and Parts List

: BW DEFENDER Packing List ............................... 33

Calibration Record Chart ................................................................................... 34

Manufacturer’s Special Warnings ..................................................................... 35

Manufactured by: BW TECHNOLOGIES

Page 3

BW DEFENDER INTRODUCTION

The BW DEFENDER is designed for field friendly operation with large, bright, gas/ alarm indicators and one button operation. The BW DEFENDER provides effective protection with the advantage of microcontroller based operation and the most advanced sensing technology available.

! ADVANCED SENSING TECHNOLOGY: The NEW TWIN TOXIC sensor employed in the BW DEFENDER has two separate chambers within one sensor enclosure which provide independent gas sensing and signal outputs. This is not to be confused with Dual Toxic sensors which are simply unfiltered carbon monoxide sensors.

! BLACK & DECKER VERSAPAK™ VP100 BATTERY OPERATION: The NiCad batteries are readily available in over 70 countries worldwide. VP100 batteries are designed with zero memory cells for repetitive charging. Standard recharge time with a VAC Charger is three hours. The batteries can be left in the VAC charger

(provided) without damage. VERSAPAK batteries have a minimum life of 300 charge cycles.

! MICROCONTROLLER BASED OPERATION: The BW DEFENDER is designed with a microcontroller that ensures reliability. The advanced minicomputer in the

BW DEFENDER offers more built-in features and functions.

! LIQUID CRYSTAL DISPLAY: The extra-large LCD indicates the gas and concentrations for 4 gases at one time. As well, it advises whenever the

BW DEFENDER is performing automatic functions. The graphic display icons provide simple and clear alarm status advice.

! DISPLAY BACKLIGHTING: The backlight automatically activates whenever an alarm condition exists. This feature can be accessed at any time with the touch of a button to view the display in poor light.

BW DEFENDER MULTI-GAS DETECTOR comes complete with:

• Wrist Strap

• Black & Decker Two-Port 110 VAC Charger c/w Manual

• 2 VERSAPAK NiCad Batteries

• Calibration Cup

• BW DEFENDER Manual

Also available BW Defender Confined Space Kits

D4-CS-KIT BW Defender Confined Space Kit with Motorized Sampling Pump

D4-AS-KIT BW Defender Confined Space Kit with Aspirator Sampling Pump

Note 1: Order Number D4-2002-SP (Motorized Sampling Pump - included;

Calibration Cup - not included since not required).

Note 2: Order with the suffix “-A” to exclude the 2-port charger.

Note 3: Order with the suffix “-EU” for 230 VAC Charger - Continental European plug

Note 4: Order with the suffix “-UK” for 230 VAC Charger - UK/Ireland plug

CALIBRATION RECORDS

Date Calibrated Calibrated By

34 1

Page 4

Updated May 30, 2000 English D1218-2.1 Page 1 (City Removed, -EU model added)

P34. English D1218/3: Nov/00 (model D4-2000-SP changed to D4-2002-SP)

Feb 12/01 (Note 3/4 “-EU,-UK”, Note 2,3 “models” to “order”)

ACCESSORIES AND PARTS LIST

! BW DEFENDER ACCESSORIES

Part # DESCRIPTION

D4-VP140 ............ 2-port vehicle 12 volt charger

D4-2-LC ............... Leather carrying case with belt clip

D4-2-EC ............... Hard-sided Equipment Carrying Case

D4-E2358 ............ BW DEFENDER Earphone c/w sampling hose

D4-SP01 .............. Motorized Sampling Pump c/w sampling hose

D4-AS01 .............. Hand Aspirator Pump c/w sampling hose

MM-PROB1 ......... 0.3 m (1 ft.) Search Probe c/w handle

MM-PROB3 ......... 0.9 m (3 ft.) Search Probe c/w handle

M1858 ................. Dilution Tube

D4-UPGRADE1 ... 2 to 4 gas upgrade kit including D4-RHM04 sensor

! BW DEFENDER SPARE PARTS

D4-RHM04 ........... TWIN Toxic Sensor for CO and H

2

SR-X10 ................ O

2

D4-RX06 .............. O

2

D4-RW90 ............. Combustible Sensor

S c/w filter

Sensor (2 year) c/w filter (compatible with: D4-2002; D2-2002 units only)

Sensor (1 year) c/w filter (compatible with: D4-2000; D2-2000 units only)

M1758K ............... Toxic and Oxygen Sensor Replacement Screens (Kit of 10)

D4-PF-1 ............... Particulate filter for Sampling hoses

M1864K ............... Water trap filters for Sampling Pump D4-SP01 (Kit of 10)

D4-WT-1 .............. In-line water trap for Aspirator Pump

D4-HSP-10 .......... 3 m (10 ft.) Sampling Pump Hose

D4-ASP-10 .......... 3 m (10 ft.) Aspirator Pump Hose

M0931K ............... Quick connector spares for Sampling Pump (Kit of 2)

M1812K ............... Quick connector spares for Aspirator Pump (Kit of 2)

D4-VP100 ............ VERSAPAK 3.6 volt NiCad battery

GA-VP110 ........... VERSAPAK 3.6 volt NiMH battery

D4-VP135 ............ 2-port 110 VAC Charger Kit c/w VERSAPAK batteries

D4-VP135-EU ...... 2-port 230 VAC Charger Kit - Continental European plug

D4-VP135-UK ...... 2-port 230 VAC Charger Kit - UK/Ireland plug

D4-M1725 ............ Break-away Wrist Strap

D4-M1713 ............ Calibration Cup

BW DEFENDER FEATURES

! AUTOMATIC ZERO: Sets oxygen range to 20.9% and other ranges to zero and automatically nullifies small differences in sensor output in a limited range.

! USER SETTABLE ALARM LEVELS: Simply reset the factory set levels with the

UP/DOWN keys to change alarm levels.

! PEAK EXPOSURES ENCOUNTERED: Displays the highest combustible and toxic gas levels, plus the lowest oxygen level since the instrument was last cleared or turned ON.

! TWA MODE: Display of accumulated Time-Weighted-Average level for toxic gas range(s) since the last time the memory was turned ON.

! LOW BATTERY WARNING: Both audible and visual warnings advise there is approximately 30 minutes of operation left. The audible will chirp every 7 seconds,

ALARM and LOW BATTERY icons will light, and the alarm LEDs will flash.

! GAS ALARM PRIORITY: Gas alarms take priority over any other type of alarm.

! RUGGED RFI RESISTANT DESIGN: BW DEFENDER is constructed of composite RFI materials for advance RFI protection. The rugged enclosure has been designed with added strength to endure industrial use.

! CONVENIENCE AND SAFETY: Monitor in either active or diffusion mode at the flip of a switch when using a BW DEFENDER equipped with Sampling Pump. The low maintenance, high efficiency rotary vane pump design provides better reliability.

33 2

Page 5

Updated English D1218/3 P.2 Nov/00 (removed 2nd last bullet on Approvals)

Nov/00 P.33 (2 year O2 sensor added and 1 year O2 sensor distinguished from 2 year; D4-VP160 removed; D4-1-LC changed to D4-2-LC –fits Schwartzer pump)

Fig.1: BW DEFENDER FEATURE DRAWING

A Low & High Alarm

Setpoints Display each time the unit is turned

ON

B Black & Decker

“VersaPak” rechargeable battery with locking switch

C Dual Mode Sampling

Pump

D “Sunbright” Flashing

Alarm LEDs

E Audible Alarm

F One Button Operation

G Keypad to set Alarm

Levels and Enter

Password

H Stores TWA and Peak functions

This manual covers the following BW DEFENDER instruments: Note: The models listed below contain the new BW Defender 2 year oxygen sensor.

Order No. Description

D4-2002 4-gas Detector

D4-2002-SP 4-gas Detector (motorized Sampling Pump installed)

D2-2002 2-gas Detector

Note: To include 110 VAC charger add no suffix. To exclude charger add suffix: “-A”.

To include 230 VAC charger add suffix: “-UK” - UK/Ireland plug; “-EU” Continental European plug.

Table 1: BW DEFENDER GAS DETECTORS

Gas Bar

Gas Monitored Unit of Measure

Symbol

BW Defender

Version

Oxygen

Explosive Gases

Carbon Monoxide

Hydrogen Sulfide

O

2

EX

% of ambient air

% of lower explosive limit (LEL)

CO Parts-per-million (ppm)

H

2

S Parts-per-million (ppm)

4-gas

2-gas

4-gas only

3

SPECIFICATIONS

DETECTOR: Multi-Gas with advanced microcontroller based operation

Power: Rechargeable NiCad battery: Operation -12 hrs. ; Charge time - 3 hrs.

Temp. Range: -20 to +50°C (-4 to +122°F)

Humidity: 5 to 95 % RH non-condensing

Self Test: Automatic when the BW DEFENDER is turned on

Records/Displays: 1. TWA (Time Weighted Average) Exposure

2. Peak Exposures

Calibration: Automatic Zero and Span

Security: Password protection for calibration and alarm setpoints

SENSORS: Combustible: Plug-in catalytic bead

Toxics and Oxygen: Plug-in 2 year electrochemical cells

DISPLAY: Four (4) extra-large gas specific alpha-numeric LCDs

Alarm Setpoints: Displayed each time the unit is turned on

Backlight: Pushbutton; Automatic in Alarm

ALARMS: Audible: 90 dB @ 0.3 m (1 ft. ) variable pulsed beeper

Visuals: 1. Two (2) flashing “sunbright” LEDs

2. Gas specific LCD flashes in alarm

Levels: Two setpoints per sensor (user adjustable):

TOXICS: Low & High (TWA, STEL)

OXYGEN: Deficiency (High) & Enrichment (Low)

COMBUSTIBLES: Low & High

Other Alarms: Multiple Gas Exposure; Sensor Removed; Calibration Air; Low Battery

Size: 11.9 x 10.3 x 2.9 cm (4.7 x 4.04 x 1.13 in.)

(with Pump) 15.2 x 10.3 x 2.9 cm (6 x 4.04 x 1.13 in.)

Weight: 375 g (13.27 oz.) including battery

424 g (14.85 oz.) including Pump & battery

Enclosure: Rugged, composite material, RFI/EMI shielded

SAMPLING PUMP: Powered by BW DEFENDER

Switch: Activates Active Sampling or Diffusion Mode operation

Active Mode: Fan ICON indicator

Low Flow: Activates Alarms (both Audible and Visual)

Flowrate: 300-350 ml/min with 3 m (10 ft.) hose and filters (dependent on pump)

Input Pressure: 1.25 kPa

Water Trap (built-in): Hydrophobic Teflon replaceable filter

Current Draw: 75 mA

Battery Life: Expected 8 hours (NiCad)

SAMPLE HOSES: Tygon hose equipped with particulate filter and quick connect

Length: Standard 3 m (10 ft.); maximum length 15 m (50 ft.)

SAMPLE PROBES: 0.3, 0.9 or 1.8 m (1, 3 or 6 ft.) polycarbonate probes with handle and quick connect

32

Page 6

Updated Nov, 2000 English D1218/3 Page 3 (models changed to D4-2002, D2-2002, to D4-2002-SP)

OPERATING SPECIFICATIONS

Primary Sensitivity:

Measuring Range:

Maximum Overload:

Detectable Accuracy:

Response @ T

50

:

Readout Increments:

Long Term Drift: Zero:

(% signal loss/year) Span:

Sensor Warranty:

Combustible

EX

%LEL

0-100%

1 %

≤6 (Note 1)

1%

Nominal

<5%

2 Years

Oxygen

% O

2

0-25%

30 %

0.1%

≤2

0.1%

Nominal

<5%

2 Years

Carbon

Monoxide

CO ppm

Hydrogen

Sulfide

H

2

S ppm

0-500 ppm 0-100 ppm

1500 ppm

1 ppm

≤7

5 ppm

Nominal

<5%

2 Years

500 ppm

0.5 ppm

≤5

1 ppm

Nominal

<5%

2 Years

Operating Humidity: 15 to 90%

Operating Pressure Range: Atmospheric ±10%

Note 1: Response typically less than 2 seconds @ T

50

Note 2: All performance data is based on conditions a 20°C (68°F), 50% RH and

1013 mBar (1 atm)

CAUTION:

The BW DEFENDER combustible sensor is highly poison resistant. All catalytic sensors should be protected from exposure to lead compounds, silicones, chlorinated hydrocarbons. Certain organic vapors (e.g. leaded gasoline and halogenated hydrocarbons) may temporarily inhibit the sensor performance, in most cases it will recover after calibration.

GETTING STARTED POWER

GENERAL: Familiarize yourself with all operating features and functions of the

BW DEFENDER. The BW DEFENDER is calibrated at the factory. User selectable

Alarm Setpoints have been set to relevant safety standards. The BW DEFENDER will advise the current Alarm Setpoints each time it is turned ON. If the user wishes to reset the Alarm Setpoints, refer to “ADJUSTING ALARM SETPOINTS”.

BATTERY AND CHARGER: Batteries must be charged before use.

WARNING: ONLY CHARGE BATTERIES USING A BLACK & DECKER

VERSAPAK™ CHARGER. DO NOT USE ANY OTHER CHARGER.

FAILURE TO OBSERVE THIS PRECAUTION COULD LEAD TO FIRE

OR EXPLOSION.

CAUTION: READ AND OBSERVE ALL INSTRUCTIONS AND PRECAUTIONS IN

THE BLACK & DECKER LITERATURE PROVIDED WITH THE

BW DEFENDER. FAILURE TO DO SO MAY RESULT IN FIRE,

ELECTRIC SHOCK OR OTHER FORMS OF PERSONAL INJURY OR

PROPERTY DAMAGE.

FIRST TIME CHARGE : The charger supplied with the BW DEFENDER is a VAC

2-port charger, which requires approximately 6 hours (both batteries) for a first time charge.

NORMAL CHARGE TIME:

After the first use, battery charging times decrease.

Normal charge time:

2-port VAC Charger - 3-4 hours for 1 to 2 batteries

Black & Decker VERSAPAK™ chargers (other than the 2-port charger included with the BW DEFENDER) may be used with BW DEFENDER batteries. Refer to the instruction manual provided with the specific charger unit for charging instructions.

NOTE: Batteries can be left in the VAC charger until required for use.

31

Updated English D1218/3 Nov/00 P31. (O2 warranty changes to 2 years)

Nov/00 P4. (deleted D4-VP160 in three places)

4

Page 7

GETTING STARTED BATTERY

GENERAL: For safety and ease of use, the battery is housed in an exterior separate battery compartment. You never have to open the monitor to change, or charge, the batteries.

OPERATION: 12-13 hours on rechargeable NiCad

(8-8.5 hours with motorized Pump)

WARNING: ONLY USE THE BLACK & DECKER VERSAPAK™ VP100 BATTERY

INSERTING THE BATTERY

1. Unlock the tan battery lock ring by sliding it fully left.

5

2. Insert the battery (contact end first) into the unit until it is fully inserted.

3. Rotate battery lock ring from

UNLOCKED to the LOCKED (fully right) position to hold the battery in place. The lock ring will click into place when it is fully sealed.

CAUTION: THE BATTERY LOCK RING

MUST BE FULLY ENGAGED

(CLICKED SHUT IN THE “LOCK”

POSITION) BEFORE USE.

REMOVING THE BATTERY

1. Slide the battery lock ring to

UNLOCKED position (fully left) and pull the battery straight out.

WARNING: DO NOT REMOVE OR

REPLACE THE BATTERY IN A

HAZARDOUS AREA. DOING SO

WILL IMPAIR THE INTRINSIC

SAFETY OF THE UNIT, AND MAY

LEAD TO FIRE OR EXPLOSION.

Problem

Unit intermittently enters alarm without apparent reason.

TROUBLESHOOTING

Possible Cause

Ambient gas levels are near alarm point.

Puff of gas.

Alarms set incorrectly.

Weak battery.

Missing and/or faulty sensor.

Pump unit is partially plugged.

Solution

Unit is operating normally. Use caution in suspect areas. Check maximum exposure reading.

Reset alarm points.

Replace and/or recharge battery.

Replace sensor.

Clear obstruction in pump hose.

Unit does not read zero when turned on.

Unit does not accurately measure gas - display varies frequently - alarm sounds frequently.

Alarm LEDs are dim and beeper is weak when unit enters alarm or self-test.

Unit shuts off without operator intervention. Display reads

“BATTERY LOW”.

Unit does not alarm when O

2 sensor is removed.

Sensor has not had time to stabilize.

Detector requires recalibration.

Ambient gas is present.

Sensor is missing.

Battery is almost dead.

Automatic Shutdown feature has operated due to weak battery.

Low (deficiency) alarm for O

2 sensor - shut off by user.

Wait 60 seconds for sensor to stabilize.

Recalibrate unit. Quick

Calibration may be sufficient.

Detector is operating properly.

Use caution is suspect areas.

Replace sensor.

Replace and/or recharge battery.

Replace and/or recharge battery.

Reset alarm point to correct value.

Unit does not alarm when explosive sensor is removed from unit.

Unit displays “SE” in both H

2

S and CO displays; stays in alarm.

Pump does not run when attached to unit.

Unit will not auto zero or calibrate.

O

2

sensor reading is erratic.

High alarm for LEL sensor has been shut off.

Toxic sensor is missing from the unit.

Pump is not turned on.

Pump is plugged.

Pump is defective.

O

2

sensor replacement may not be compatible.

Reset alarm point to correct value.

Replace toxic sensor or dummy toxic sensor (D2-2002 only) in

2-gas BW DEFENDER.

Push vents closed to turn on pump.

Clear hoses.

Replace pump unit.

Change O

2

sensor.

D4-2002 2 year O

2

D4-2000 1 year O

2

(#SR-X10)

(#SR-X10)

30

Page 8

Updated Nov, 2000 English D1218/3 Page 30 (changed to D2-2002; Added last row for oxygen

TROUBLESHOOTING

This section lists some common errors and their solutions. If you are unable to solve the problem, please contact BW Technologies for assistance.

Problem

Unit will not turn ON.

Display doesn't show

CO or H

2

S measurements.

Unit does not display

TWA measurements.

Unit does not enter alarm.

Unit enters alarm immediately when turned on.

Unit does not respond to keypad.

Unit does not accurately measure gas.

Unit does not display maximum level of oxygen detected.

Possible Cause

No battery.

Battery is dead.

Unit is damaged or defective.

This is a 2-gas version

BW DEFENDER, which does not measure toxic gases.

This is a 2-gas version

BW DEFENDER, which does not measure toxic gases.

Alarm points are set incorrectly.

Alarm setpoint(s) may be set to zero (off).

Unit is in calibration mode.

Sensors are not yet stable.

Battery warning alarm - battery is weak.

Sampling pump is plugged.

Sensor is missing from unit; or defective sensor.

Battery is dead.

Unit is performing operations that require no user input.

Unit requires recalibration.

Unit is colder/hotter than gas being measured.

Sensor screens are clogged and dirty.

Sensor(s) require(s) replacement.

Sensor is missing from unit.

Peak detection for oxygen: displays the lowest value, not the highest value detected.

Solution

Install battery.

Replace and/or recharge battery.

Contact BW.

Contact BW for kit to upgrade to the, 4-gas version (D4-2002).

Contact BW for kit to upgrade to the 4-gas version.

Reset alarm setpoints to correct values.

Reset alarm setpoints to correct values.

Recalibrate unit immediately.

Wait for 60 seconds.

Replace/recharge battery.

Remove obstruction.

Replace sensor.

Replace and/or recharge battery.

Keypad operation will be automatically restored at the appropriate time.

Recalibrate unit.

Allow unit to acquire ambient temperature before use.

Clean sensors.

Replace sensor(s).

Replace sensor.

Unit is operating normally.

29

WRIST STRAP

1. Thread the split ring onto the silver lanyard anchor located on the bottom back of the unit. Attach the strap to the split ring. The strap has a break away safety feature.

GENERAL:

All operating features and functions are activated by the rubber keypad. The keypad operation is designed to prevent accidental activation of any function.

The BW DEFENDER will advise you each time a function is accessed, and when automatic functions, are taking place. Press the keys down firmly. Each button has multiple functions, which are discussed in the appropriate sections of this manual.

6

BW DEFENDER KEYPAD

Page 9

GETTING STARTED DISPLAY ICONS

GENERAL:

BW DEFENDER icons and intelligent alpha-numeric display provide clear

“Status at a Glance” advice at all times. Only applicable icons will be displayed at any one time.

What the Various Icons Mean:

1) Alarm Icons: One or more of these icons will light up during an alarm condition:

HIGH indicates high alarm; LOW indicates low alarm. Both HIGH and LOW are lit up during a Multiple Gas sensor alarm.

2) Gas Bar Icons: Identify the gas measured and the units of measure (ppm, %, and

%LEL). Gases not being measured are not displayed.

3) Calibration Icons: Shown only when the unit is performing calibration operations.

4) Key Icon: Appears when calibration and alarm setpoint adjustment is password protected, or locked out. Also appears if the password is required from the user.

5) Up and Down Arrows: Appear when the unit is waiting for user input. This occurs during password entry and alarm setpoint entry.

6) Fan Icon: Indicates condition of the motorized sampling pump (if one is installed).

The fan spins if pump is operational, and flashes when the pump is plugged.

7) Battery Icons:

Continuously display the condition of the battery.

2-GAS to 4-GAS UPGRADE

GENERAL: D4-2002 (4-gas) BW DEFENDERS — operating toxic gas sensor

D2-2002 (2-gas) BW DEFENDERS — “dummy” sensor

The Twin Toxic sensor can be added and the BW DEFENDER programming can be changed at any time to turn a 2-gas BW DEFENDER into a 4-gas BW DEFENDER.

Upgrade a 2-gas to a 4-gas BW DEFENDER, do the following:

1. Turn the BW DEFENDER off. Remove the endcap.

2. Remove the middle “dummy” sensor and replace with a new BW DEFENDER

Twin Toxic sensor. Replace the endcap.

3. Press and hold the (ON/OFF) key. The detector will turn off. DO NOT

RELEASE THE ON/OFF KEY.

4. After 30 seconds, the BW DEFENDER will reactivate and emit one (1) or two (2) beeps. The screen will light and the word OFF will appear on the screen. Release the button. The User Input prompt Icons will appear at the bottom of the screen.

If the BW DEFENDER beeps once: The BW DEFENDER is password protected.

5a. Enter the password by setting each of the three digits with the !UP, "DOWN keys. Press TAB to advance to the next digit. If the password is incorrect, the

LCD displays “NO”, and returns to normal operation. If the BW DEFENDER beeps twice, continue as described below.

If the BW DEFENDER beeps twice:

5b. Enter Field Option Code “777” using the !UP, "DOWN keys. Press the TAB key to advance to the next digit,

6. After a pause, the unit beeps 3 times to confirm the entry was correct. Now enter the Sensor Upgrade Code “001”.

7. After a pause, the BW DEFENDER will beep 4 times. Then the BW DEFENDER will begin showing gas measurements for all 4 measured gases.

The unit is now a 4-gas BW DEFENDER, capable of measuring toxic gases as well as LEL and O

2

.

WARNING 1: RECALIBRATE THE UNIT IMMEDIATELY AFTER PERFORMING

THE UPGRADE. FAILURE TO DO SO WILL COMPROMISE THE

BW DEFENDER'S EFFECTIVENESS AS A SAFETY INSTRUMENT.

WARNING 2: INCORRECTLY ENTERING THE FACTORY CODES 777 AND/OR

001 LISTED ABOVE MAY ERASE THE PASSWORD FROM THE

BW DEFENDER. IF THIS HAPPENS, THE PASSWORD WILL HAVE

TO BE MANUALLY SET. (See Page 21.)

28

Page 10

Updated Nov, 2000 English D1218/3 Page 28 (models changed to D4-2002, D2-2002; last sentence changed to page 21)

FIELD OPTIONS CONFIDENCE BEEP

GENERAL:

Once activated the Confidence Beep will BEEP once every 6 seconds to advise that it is operational.

IMPORTANT: As shown in the table below, the confidence beep option reverses the normal behavior of the BW DEFENDER low battery alarm. When the confidence beep is enabled, the BW DEFENDER will emit a short beep once every 6 seconds when the battery is okay. The BW DEFENDER will not beep when the battery is low.

Table 4: Confidence Beep Effect on Low Battery Alarm

Confidence beep

Not Activated

When battery is OK

Battery alarm is Silent

When battery is low

Battery alarm is Active

Enabled Confidence Beep is Active Confidence Beep is Silent

To enable the confidence beep option, do the following:

1. Turn the BW DEFENDER ON. Wait until it is fully ON.

2. Press and hold the (ON/OFF) key. The detector will turn off. Continue to hold the ON/OFF key—DO NOT RELEASE THE (ON/OFF) key.

3. After 30 seconds, the BW DEFENDER will reactivate and emit one or two beeps.

The screen will light and the word “OFF” (or “000”) will appear on the screen.

Release the button. The User Input prompt Icons will appear at the bottom of the screen.

If the BW DEFENDER beeps once: (“000” appears) – Unit is password protected.

4a. Enter the current password by setting each of the 3 digits with the !UP/ "DOWN keys. Press TAB after each digit. If the password is incorrect, the LCD will display

“NO” and return to normal operation. If the BW DEFENDER beeps twice, continue as described below.

If the BW DEFENDER beeps twice (OFF appears):

4b. Enter the Field Option Code “777” using the !UP/ "DOWN keys. Press the TAB key to advance to the next digit.

5. After a pause, the unit will beep 3 times to confirm the entry was correct. Now enter the Confidence Beep Code “002”.

6. After a pause, the BW DEFENDER will beep 4 times to confirm acceptance. Once this is complete, the BW DEFENDER will begin to emit the Confidence Beep and the unit will return to normal operation.

WARNING: INCORRECTLY ENTERING THE FIELD OPTION CODES 777 AND/OR

002 LISTED ABOVE MAY ERASE THE CURRENT PASSWORD FROM

THE BW DEFENDER UNIT. IF THIS HAPPENS, THE PASSWORD

WILL HAVE TO BE MANUALLY RESET. (See page 21.)

27

Updated Nov, 2000 English D1218/3 Page 27 (last sentence changed to page 21)

OPERATION ACTIVATING THE DETECTOR

GENERAL: BW DEFENDER automatically executes a self test to verify the audible and visual alarms and all segments of the LCD display. If the earphone is plugged in, it will be tested at this time as well.

1. Press ON/OFF key firmly.

FIRST: The Audible/Visual alarms will activate.

All LCD display segments will light.

2ND: The current LOW and HIGH alarm setpoints are displayed for all 4 gases simultaneously. Observe the readout.

ALARM LOW icon is displayed and the ppm, % or % LEL setpoint for each gas.

HIGH ALARM icon is displayed and he ppm, % or % LEL setpoint for each gas.

3RD: The BW DEFENDER will display a

30 second countdown to normal operation.

The LCD display will show:

On in ##” (number of seconds)

AMBIENT LEVELS:

After the delay, the

BW DEFENDER will show the ambient levels of the target gases present in the immediate area.

The unit also begins Time-Weighted-Average

(TWA) measurements of the target toxic gases

(if any) and begins recording the Peak Exposures encountered.

PLEASE NOTE: Because of unavoidable minor variations in components, some sensors may take slightly longer than 30 seconds to stabilize. These sensors may temporarily go into alarm, or show non-zero values for up to 30 additional seconds before returning to zero. This is normal and is not a sign of malfunction.

8

Page 11

DEACTIVATING THE DETECTOR

GENERAL:

The BW DEFENDER “OFF” function is designed to prevent accidental shut off, and will warn you that the BW DEFENDER is being shut down.

1. To deactivate, press the (ON/OFF) key firmly and hold it down until the word “OFF” appears on the screen (approximately

4 seconds).

OFF WARNING: Prior to the “OFF” readout the detector will emit 4 beeps and flash the alarm LEDs as a warning that the unit will be shutting down. Shut down will occur after the word “OFF” displays.

NOTE: If the button is released before

4 seconds have elapsed, the unit will not shut off. If this happens accidentally: Press the key again for 4 seconds.

BACKLIGHT DISPLAY

Access the BW DEFENDER LCD backlight feature to view the display in poor light.

The backlight will remain lit for about

5 seconds, and then automatically shut off.

# The backlight is automatically activated if any gas alarm condition exists.

NOTE: If the key is held down over 5 seconds, the TWA and Peak Exposure information will be displayed. (See “Accumulated

Exposure Levels”.) The backlight will deactivate automatically after the TWA information is finished displaying.

SENSOR REPLACEMENT

GENERAL:

The Twin Toxic, Oxygen and the Combustible sensors have a two

(2) year warranty. Sensors should be replaced at the end of their warranty period.

Replace dirty or plugged sensors immediately. Failure to do so may compromise the unit's effectiveness as a safety instrument.

SENSOR PLACEMENT: With the LCD (front of the BW DEFENDER) facing you:

Oxygen Sensor (Black band) - Left hand side (nearest the battery)

(2 year: # O2-A2) (1 year: # O2-A1)

Twin Toxic Sensor (Turquoise band) - Middle Sensor

Combustible Sensor (Silver sensor) - Right hand side

NOTE : Leave the shorting wire across the pins of the Twin Toxic sensor until just before installation.

1. With the BW DEFENDER turned OFF, remove the 4 screws on the top endcap.

Remove the top endcap and the replaceable sensor screens.

2. Using a pair of needlenose pliers or similar tool, grasp the desired sensor firmly and pull straight out. Rocking the sensor back and forth gently may help free tightly held sensors. Do not use excessive force or sensors may be crushed.

3. Line up and insert the replacement sensor. It fits one way only. Push firmly into the mating sockets. Do not force into place. When fully seated, all sensors will be approximately the same height.

4. Replace the endcap and sensor screens with the 4 screws. Tighten the screws only slightly more than finger tight.

5. Turn the BW DEFENDER ON for 30 minutes and then calibrate the monitor. (See

“CALIBRATION”.)

UPGRADING: 2-gas BW DEFENDERs may be upgraded to a 4-gas BW DEFENDER in the field with the D4-UPGRADE1 Kit.

SENSOR STORAGE:

Sensors should be stored in a cool place (0 to 20°C

(32 to 68°F)). Keep in the sealed container they were shipped in.

9 26

Page 12

Updated Nov, 2000 English D1218/3 Page 26 (take out one (1) year O2 warranty in first paragraph; distinguish 1 yr vs.2 yr.O2 sensor)

25

Replaceable Sensor Screens

#M1785

BATTERY TEST

GENERAL: The BW DEFENDER continuously monitors the performance and condition of its battery. During normal operation, the unit displays “Battery OK” in the bottom left hand corner of the LCD display.

LOW BATTERY ALARM:

Should the unit detect a battery in the early stages of running down, the unit will emit a low battery warning alarm. (See page 14.) This warning will persist until the battery in the unit is replaced, or the battery is nearly dead.

If the low battery condition persists long enough, the battery will be in danger of running down to the point where the unit can no longer accurately measure gas.

Once this happens, the unit will execute an automatic shutdown (see below).

AUTOMATIC SHUTDOWN

AUTO-SHUTDOWN:

Should the battery be in immediate danger of dropping below the minimum operating voltage, the

BW DEFENDER will automatically shut down. Auto-Shutdown is preceded by approximately 30 minutes of low battery alarm.

Auto-Shutdown is announced by: a) 8 beeps and flashing alarm LED's. b) The unit will turn off the LCD display except for the “BATTERY LOW” icon, which will flash periodically to remind you that the unit is in need of a charged battery.

10

Page 13

ACCUMULATED EXPOSURE LEVELS

GENERAL:

The 4-gas BW DEFENDER automatically calculates the TWA (Time-

Weighted-Average). Exposure of H

2

S and CO (toxic) gases based on the standard

8 hour work day. The BW DEFENDER also records and displays the Peak Exposure encountered for each gas. These measurements are referred to as:

AE” = Average Exposure or TWA (Time-Weighted-Average)

PE” = Peak Exposure encountered (the maximum hazard)

To view:

1.

Press and hold the key until the letters “AE” (or “PE”) appear (5 sec.).

NOTE 1: TWA measurements do not apply to oxygen or explosive gases. The 2-gas BW DEFENDER skips directly to the “PE” peak readings.

TWA PPM READOUTS (4-gas BW DEFENDER)

First: “AE” will appear, in both, H

2

S and CO displays, followed by the TWA exposure readings in ppm for each gas.

PEAK HAZARD EXPOSURE READOUTS (2-gas and 4-gas BW DEFENDERS)

2

ND

:

Next “PE” will appear on the displays followed by the Peak

Exposure readings in ppm, % or % LEL for each gas monitored.

NOTE 2: For H

2

S, CO and EX, the Peak is the maximum exposure to gas encountered. For oxygen, the “Peak” hazard is actually the lowest oxygen deficiency level experienced.

DISPLAY BACKLIGHT: For easy reading in poor light, display backlight is lit.

3

RD

: The detector will return automatically to normal operation, displaying the gas present, and the backlight will turn OFF.

CAUTION: Accumulated exposures (TWA & PE) automatically reset when the

BW DEFENDER is turned OFF. DO NOT turn the unit off during the workday,

TWA and the Peak Exposure measurements will be reset.

11

ALARM SETPOINTS

AUTO SPAN: BW DEFENDER will automatically adjust each responding sensor. First, a beep advises Auto Span has started. Then the “AUTO SPAN” and “Gas Bottle” icons will flash for 10 seconds. Apply the Test Gas before the end of the 10 second delay.

5. Attach hose to calibration cup. Place cup over the sensors and open gas regulator valve fully (0.5 LPM).

NOTE 1:

The BW DEFENDER will scan for 30 seconds to check if Test Gas is being applied to any, or all, sensors. Real-time sensor readings will display on the

LCD. If calibration gas is not detected by a sensor, it's

LCD will flash and blank out for the duration of the Auto

Span. (The previous calibration information is retained by the sensor.)

NOTE 2: An audible sound advises that the AUTO

SPAN has begun.

Sensor Span Time: TWIN Toxic - 2 min.; Oxygen and

Combustible - 15 seconds.

WARNING: CALIBRATION GASES MUST FLOW UNTIL THE AUTO SPAN

OPERATION IS COMPLETE, EVEN THOUGH THE LCD DISPLAYS MAY BE

STABLE BEFORE THE SPAN OPERATION IS COMPLETED.

6. Three beeps announce AUTO SPAN has ended. Shut off and remove calibration gas. Alarm setpoints will be displayed and may be adjusted if desired.

ADJUSTING ALARM SETPOINTS

1. The low alarm setpoint for the first available sensor is displayed on the LCD panel.

Use the UP/DOWN arrow keys to adjust the alarm setpoint.

NOTE: Setting the alarm point to zero will disable affected alarm for that sensor. setpoints quickly. Pressing no key causes the unit to automatically advance through the setpoints after a short delay.

3. Repeat steps 1) and 2) to set each sensor and alarm setpoint or skip all of the available alarm setpoints. After the last alarm setpoint has been set, there will be a short pause. The unit will then sound 4 beeps, and show “ACC” (Accept) on the

LCD display. Calibration is now complete, and the unit will return to normal operation.

24

Page 14

CALIBRATION

GENERAL: The BW DEFENDER, designed for easy calibration, will automatically set span and zero. The LCD advises you as each automatic function takes place and when to apply calibration gas.

IMPORTANT: BW DEFENDERMUST BE CALIBRATED USING GAS CONTAINING

CONCENTRATIONS OF TEST GASES THAT ARE EQUAL TO THE

FOLLOWING PRESET VALUES: Hydrogen Sulfide - 25 ppm, Carbon

Monoxide - 100 ppm, Methane (EX) - 2.5% (50% LEL), and Oxygen

(O

2

) - 20.9%.

NOTE 1:

BW DEFENDER Quad Gas is available from BW Technologies. If calibrating only 1, 2 or 3 sensors - the test gas concentrations must be equal to the above for the target sensor(s).

RECOMMEND: Calibrate every month depending on use and sensor exposure to poisons and contaminants.

WARNING: Do not calibrate a BW DEFENDER which is in Low Battery Alarm. Do not remove the Battery from the detector during calibration. Doing so will cause all NEW calibration information to be lost, leaving the old calibration settings.

1. Calibrate only in a clean, normal environment free of background gases.

2. Place a fully charged battery in the unit. Turn the BW DEFENDER on. Allow at least two minutes for the sensors to stabilize. together until the word “CAL” appears on screen (4 seconds). The BW DEFENDER will beep and flash the alarm LEDs advising calibration is being initiated. As well, the icons for AUTO ZERO, AUTO SPAN and Gas Bottle are displayed.

NOTE 2: If BW DEFENDER is password protected, enter the password before “CAL” is displayed

(See “Password Protection”).

4. AUTO ZERO: One beep will announce AUTO

ZERO has begun. Gas specific LCDs will display zeroes. The AUTO ZERO icon will flash

(approx. 5 seconds). The unit is now zeroed.

23

ALARM SETPOINTS

GENERAL: Each gas detected has two user-settable alarm points. Each setpoint can be individually adjusted by the user. Each set of alarm setpoints control different aspects of the BW DEFENDER'S behavior, as described below. Alarm setpoints can be password protected.

NOTE: An alarm level can be disabled by setting that alarm setpoint to zero.

TABLE 2: Alarm Setpoints Parameters and Factory Default Setpoints

Alarm Levels (EX: Factory default setpoints

Gas Monitored Symbol

Oxygen

Explosive Gases

O

Carbon Monoxide CO

Hydrogen Sulfide H

2

2

EX

S

Low

Deficiency

(10% LEL)

(35 ppm)

(10 ppm)

TWA

(35 ppm)

(10 ppm)

High

Enrichment

(20% LEL)

(200 ppm)

(15 ppm)

Model

2&4-gas

4-gas

Description of Sensor Alarm Setpoints

OXYGEN: The LOW alarm setpoint controls the one (1) Deficiency alarm, while the high alarm setpoint controls the one (1) Enrichment alarm. If the oxygen level drops below the LOW alarm setpoint, the unit will enter LOW alarm. If the oxygen level rises above the HIGH alarm setpoint, the unit will enter HIGH alarm.

Caution 1: It is not possible to set both alarms as deficiency alarms, or both alarms as enrichment alarms. Doing so will cause the unit to remain permanently in alarm until the alarm levels are reset.

EXPLOSIVE (Combustibles): The two alarm setpoints for the explosive gas sensor controls the level at which the unit enters LOW alarm and HIGH alarm.

TOXICS: For H

2

S and CO, the LOW alarm setpoints control both the instant LOW alarm level and the TWA (time-weighted-average) alarm level. When the LOW alarm setpoint is exceeded, the unit will enter LOW alarm. If the accumulated

TWA level should exceed the LOW alarm setpoint, the unit will enter HIGH alarm.

Caution 2: The INSTANTANEOUS LOW alarm setpoint and the TWA alarm setpoint are identical. It is not possible to set the LOW alarm at one level, and TWA alarm at a different level. Setting the LOW alarm setpoint OFF will disable the

TWA alarm. The toxic INSTANTANEOUS HIGH alarm setpoint controls the level at which the unit will enter HIGH alarm.

12

Page 15

AUDIBLE / VISUAL ALARMS

GENERAL:

Distinguish audibly and visually which gas hazard(s) is present, the alarm level(s) and type(s) of alarm: LOW, TWA, HIGH, or Multi-Gas alarm. During the different gas alarm pattern, the alarm LEDs blink on and off as the speaker sounds.

The speaker tone changes from a low tone to a high tone in a repeating pattern. The backlight is on, and remains on for the duration of the alarm condition.

Table 3: Audible and Visual Alarms

Indicator

ICON flashes

Audible sounds at:

Tone-Pattern

LEDs:

LCD Gas Display:

Low Alarm

“ALARM

1 Hz

Low to High -

High and TWA Level Alarm

“HIGH ALARM”

2 Hz

Low to High - faster

Both flash in sync with the affected Gas Readout.

Affected Gas Readout Blinks at 2 Hz. Backlight is lit.

LOW ALARM: Low alarm is activated when one of the detected gases has exceeded its low alarm setpoint.

HIGH ALARM:

High alarm is activated when one of the detected gases has exceeded its high alarm setpoint.

Also, when the TWA (Time-Weighted-

Average) exposure to a toxic gas exceeds the TWA alarm setpoint, High Alarm is activated.

NOTE: In TWA alarm, the affected toxic gas display(s) will blink even though the display may read “00”. To view Accumulated

Exposures see page 11.

The Low and High Alarms stop when the ambient gas level returns to the acceptable range.

MULTI-GAS ALARM: If more than one gas alarm hazard is present all alarm icons -

HIGH ALARM LOW - will blink along with the LCDs of the affected gases. The audible will change from 1 Hz pattern to a 2 Hz pattern and back again. Thus, multiple-gasalarm appears as a combination of both low and high alarm.

CAUTION: If the combustible gas sensor is exposed to an over-range condition, the sensor will be latched at over-range until the BW Defender is shut off and turned back on again.

13

MAINTENANCE

The rugged BW DEFENDER is designed to provide years of service with regular care and minimal maintenance.

1. Calibrate, test, and inspect the unit at regular intervals.

2. Keep an operations log of all events and occurrences.

EXTERIOR:

Clean the BW DEFENDER exterior with a soft damp cloth. Do not use solvents, soaps, or polishes on the detector.

DUST AND PARTICULATES: The Toxic and Oxygen sensors both have a replaceable washable screen and a built-in washable screen. Without opening the instrument, clean the screens with a soft, clean brush, water and mild soap.

Caution: Replace dirty and/or plugged screens and sensors.

NOTE: The combustible sensor has a sintered steel flame arrestor screen. Clean only with a dry brush.

WATER : Do not immerse in liquids. In the event the sensors become clogged by water, clean immediately. Drain the sensors and dry with a clean cloth.

Wait several minutes for them to air dry. Check that they are clean.

CAUTION: Removing the Twin Toxic sensor from the BW DEFENDER for longer than 10 minutes may destabilize the sensor. If this occurs, replace the sensor in the board and turn on the BW DEFENDER for 30 minutes before using.

22

Page 16

FIELD OPTIONS AUTO ZERO

GENERAL: The BW DEFENDER sensors can be AUTO ZEROED without the use of calibration gas. In a clean, normal environment free of background gases, initiate the

Calibration procedure (see page 23). All the sensors will be Auto Zeroed.

PASSWORD PROTECTION

GENERAL: Access (to calibration and alarm setpoints) can be restricted by the user.

“KEY ICON”: The key icon will illuminate and remain lit when Password is enabled.

1. Turn BW DEFENDER ON. Press and hold the key for 5 seconds. The unit will beep 4 times, than the word “OFF” will display and the LCD will go blank.

2. DO NOT RELEASE THE KEY - CONTINUE holding button down for an additional 30 seconds.

During this time the BW DEFENDER will do nothing.

NOTE: After 30 seconds, the screen will light, the word “OFF” will appear and two beeps will sound or000” will appear and the audible will beep once.

One Beep (“000”) - Change or Remove the Existing Password:

after each digit

. If the password is incorrect, the LCD will display “NO” and exit the password routine. If the unit beeps twice, continue as described below.

Two Beeps (“OFF”) - Enter a New Password: Do not use a password of “000” as this is the OFF setting and it will disable password protection.

after each digit.

5. The BW DEFENDER will beep three times. Enter the new password again to verify it is correct. If the two entries match, 4 Beeps will verify BW DEFENDER is locked. If they are different, the LCD will display “NO” and exit without setting the password.

6. The calibration lockout is maintained until the password is reset to “000”.

21

OTHER ALARMS

GENERAL: In addition to the gas hazard alarms, the BW DEFENDER provides a distinct alarm warning if the battery power is low, and to announce a missing sensor.

LOW BATTERY ALARM

Occurs when the battery voltage falls to a point where the battery approximately

30 minutes of useful life remaining.

Audible: Low-pitched “chirp” every 7 sec.

LEDs: Blinks in sync with audible

ICONS: “ALARM” word blinks every 2 sec.

LOW BATTERY” words blink in sync.

The low battery warning persists until the battery recovers or, if the battery is in danger of failure, the BW DEFENDER will execute an Automatic Shutdown (see page 10).

Observe carefully to ensure the battery does not fail without proper notification to the user.

Caution:

Low Battery Alarm is replaced if the

Confidence Beep is activated. (See

“Confidence Beep”.)

MISSING SENSOR ALARM

Advises the detector is not intact and which sensor is missing.

Twin Toxic Sensor:

Activates a Multi-Gas type alarm and the letters “SE” (Sensor) will blink on both the CO and the H

2

S displays.

This also applies if the “dummy sensor” is removed from the 2-gas version.

Combustible Sensor: Activates high alarm audible and visuals and the letters

Or” (overrange) blink on the EX display.

Oxygen Sensor:

Activates low (Deficiency) alarm and the numbers “0.0” blink on O

2 display.

14

Page 17

CONFINED SPACE

The presence of a hazardous atmosphere is a major threat to workers in confined spaces. Special precautions are required - for workers who must enter a confined space - to protect workers from flammable or toxic atmospheres, oxygen depletion or enrichment.

To reduce the hazard, it is required that the atmosphere be tested prior to entering the confined space. In addition to monitoring prior to entry, it is required that the atmosphere be constantly monitored during entry and as long as people are in the confined space.

The BW DEFENDER is factory set to recommended alarm setpoints for:

OSHA (Occupational Safety and Health Association), and

OHS (Occupational Health and Safety)

The first alarms are set: Combustibles: 10 % LEL

Oxygen: 19.5 % Vol.

Carbon Monoxide: 35 ppm

Hydrogen Sulfide: 10 ppm

BW DEFENDER alarm setpoints are field adjustable for special applications.

DAILY OPERATION

1.

Turn your BW DEFENDER “ON”. All features and functions are activated. Leave the BW DEFENDER ON for the entire work shift to collect TWA (Time Weighted

Average) and PEAK Exposure data.

2.

In the event of a hazardous gas alarm take appropriate precautions immediately.

A gas alarm takes priority over any other types of alarms.

3.

TEST ALARMS: Verify proper alarm function prior to use with BW’s “Bump” Alarm

Test Gas. Alarm Test Gas is not intended to replace routine calibration, but rather to confirm proper alarm function between calibrations.

Apply Test Gas. All sensors should be in alarm while the gas passes over the sensors. Check and confirm operation of: LEDs, Alarm Icons, Backlight, and Audible

Alarm.

Note: Small quantity of gas required. DO NOT blast the sensors with “Bump” gas.

CAUTION: Any rapid up-scale reading followed by a declining or erratic reading may indicate a gas concentration beyond upper scale limit which may be hazardous.

CAUTION: High off-scale readings may indicate an explosive concentration.

15 20

Page 18

MANUAL ASPIRATOR PUMP

GENERAL: The manual aspirator option is an inexpensive method of adding remote sampling capabilities to a BW DEFENDER . The Aspirator Pump and Sampling Hose are joined by a simple quick connect. The D4-AS01 Aspirator Pump is equipped with the squeeze bulb and an in-line water trap (Order #: D4-WT-1) When ordered, the

D4-AS01 includes a D4-HAS-10 10 ft. (3.1m) sampling hose (longer lengths available). The Sampling Hose is equipped with a Particulate Filter

(Order #: D4-PF-1).

To operate the Aspirator pump:

1.

Attach the Sampling Hose (or Sampling

Probe) quick connect to the in-line water trap on the Aspirator Pump. Turn right to lock them together.

2.

Attach the outlet hose on the bulb to the barb connector on the calibration cap.

3.

Fit the calibration cap overtop of an operating BW DEFENDER unit.

4.

Squeeze the bulb rapidly to draw sampled gases into the BW DEFENDER.

Note 1: Keep hoses clean and dry. Clean out clogged tubing by blowing or flushing with clean water. Allow to dry before use. Both the in-line water filter and

Particulate filters are replaceable.

MOTORIZED SAMPLING PUMP

CONVENIENCE: A BW DEFENDER equipped with motorized Pump and allows you to monitor in either Active Motorized Sample Mode or Ambient Diffusion Mode simply at the flick of the switch. The integral pump is never removed during either Active or

Ambient Modes of operation.

RELIABILITY: The high efficiency rotary vane pumps act like a small turbine. BW DEFENDER pumps provide better reliability and less friction that result in lower maintenance. The

BW DEFENDER pump is not pressure sensitive.

POWER: The Sampling Pump is powered by the BW DEFENDER. Eight hours of operation is expected.

SAMPLING PUMP INSTALLATION: The BW DEFENDER Sampling Pump, is installed at the factory if ordered together. The pump can be field installed if ordered separately.

1. Remove the 4 machine screws on the BW DEFENDER’s sensor endcap and remove the cap sensor screens. The pump is equipped with sensor screens.

2. Fit the pump unit on the BW DEFENDER in place of the missing endcap.

3. Using 4 machine screws (provided with the pump), attach the pump unit to the

BW DEFENDER. Secure firmly in place.

Note: Overtightening screws results in the Pump Slider Switch being stiff.

19 16

Page 19

SAMPLING PUMP

1. Attach the Sampling Hose or Sampling Probe directly to the Sampling Pump. Turn the quick connect right to lock into place.

TO ACTIVATE THE PUMP

2. Simply slide the thumbswitch fully to the right closing the vents. The pump will automatically turn ON, drawing the sampled air across the sensors. The

Sampling Pump Fan Icon will light.

During pump operation, the BW

DEFENDER will display the FAN icons in a “spin” pattern. This indicates that the pump is operating normally.

Allow 2 minutes or more for the sample to travel up the sample tubing (dependent on the length of the tubing).

TO RETURN TO AMBIENT MODE

3. Slide the thumbswitch fully left, opening the vents, which allows the ambient air to reach the sensors via normal diffusion. The pump will automatically turn OFF.

LOW FLOW ALARM

GENERAL: Should the Hose (Probe) or Pump become clogged or plugged, the

BW DEFENDER unit will go into alarm. All Alarm indicators will pulse rapidly.

VISUAL ALARMS: The FAN icon will flash ON and OFF

The “HIGH ALARM” icon will flash

The LED Alarms will flash

AUDIBLE ALARMS: The Audible Beeper will sound in a fast intermittent pulse

1.

Turn the pump OFF immediately. Slide the Pump's thumbswitch fully left opening the vents.

2.

Clear obstruction before proceeding. Clean out clogged tubing probe by blowing it out or flushing with clean water and drying. Wash and dry clogged blue Particulate

Filter (or replace). Check the clear cap to see if water has reached the pump trap

(see page 18).

17

SAMPLING PUMP

HYDROPHOBIC FILTER: The replaceable hydrophobic Teflon filter should be inspected periodically to ensure that it is clean. Dirty filters will impede airflow into the

BW DEFENDER unit, and should be replaced as soon as possible.

WATER INVASION: Due to design, water is unlikely to reach the pump housing. But, in the event it does, open the housing and drain the liquid from the built-in water trap.

Dry the filter.

1. Remove the 3 screws holding the clear cap in place.

2. Drain out any liquid and air dry the filter.

If the filter is dirty or damaged, remove the old filter.

3. Put the new filter in place overtop the adhesive ring and lightly press into place. Be certain the filter does not obscure the nutserts and is correctly aligned.

4. Replace the clear cap, ensuring the three Phillips screws are fully seated and the filter is in the correct position.

Hydrophobic Filter Kit of 10 (Order #: M1864K)

SAMPLING PROBES

The 1, 3 or 6 ft. (0.3, 0.9 or 1.8 m)

Probes are equipped with a handle and quick connect.

SAMPLE HOSE

D4-SP01 will include a D4-HSP-10, 10 ft.

(3 m) sampling hose (longer lengths available). The Sampling Hose is equipped with a blue Particulate Filter

(Order #: D4-PF-1) and a quick connect.

Sample hoses are available up to

15.24 m (50 ft.) in length.

18

Page 20

SAMPLING PUMP

1. Attach the Sampling Hose or Sampling Probe directly to the Sampling Pump. Turn the quick connect right to lock into place.

TO ACTIVATE THE PUMP

2. Simply slide the thumbswitch fully to the right closing the vents. The pump will automatically turn ON, drawing the sampled air across the sensors. The

Sampling Pump Fan Icon will light.

During pump operation, the BW

DEFENDER will display the FAN icons in a “spin” pattern. This indicates that the pump is operating normally.

Allow 2 minutes or more for the sample to travel up the sample tubing (dependent on the length of the tubing).

TO RETURN TO AMBIENT MODE

3. Slide the thumbswitch fully left, opening the vents, which allows the ambient air to reach the sensors via normal diffusion. The pump will automatically turn OFF.

LOW FLOW ALARM

GENERAL: Should the Hose (Probe) or Pump become clogged or plugged, the

BW DEFENDER unit will go into alarm. All Alarm indicators will pulse rapidly.

VISUAL ALARMS: The FAN icon will flash ON and OFF

The “HIGH ALARM” icon will flash

The LED Alarms will flash

AUDIBLE ALARMS: The Audible Beeper will sound in a fast intermittent pulse

1.

Turn the pump OFF immediately. Slide the Pump's thumbswitch fully left opening the vents.

2.

Clear obstruction before proceeding. Clean out clogged tubing probe by blowing it out or flushing with clean water and drying. Wash and dry clogged blue Particulate

Filter (or replace). Check the clear cap to see if water has reached the pump trap

(see page 18).

17

SAMPLING PUMP

HYDROPHOBIC FILTER: The replaceable hydrophobic Teflon filter should be inspected periodically to ensure that it is clean. Dirty filters will impede airflow into the

BW DEFENDER unit, and should be replaced as soon as possible.

WATER INVASION: Due to design, water is unlikely to reach the pump housing. But, in the event it does, open the housing and drain the liquid from the built-in water trap.

Dry the filter.

1. Remove the 3 screws holding the clear cap in place.

2. Drain out any liquid and air dry the filter.

If the filter is dirty or damaged, remove the old filter.

3. Put the new filter in place overtop the adhesive ring and lightly press into place. Be certain the filter does not obscure the nutserts and is correctly aligned.

4. Replace the clear cap, ensuring the three Phillips screws are fully seated and the filter is in the correct position.

Hydrophobic Filter Kit of 10 (Order #: M1864K)

SAMPLING PROBES

The 1, 3 or 6 ft. (0.3, 0.9 or 1.8 m)

Probes are equipped with a handle and quick connect.

SAMPLE HOSE

D4-SP01 will include a D4-HSP-10, 10 ft.

(3 m) sampling hose (longer lengths available). The Sampling Hose is equipped with a blue Particulate Filter

(Order #: D4-PF-1) and a quick connect.

Sample hoses are available up to

15.24 m (50 ft.) in length.

18

Page 20

MANUAL ASPIRATOR PUMP

GENERAL: The manual aspirator option is an inexpensive method of adding remote sampling capabilities to a BW DEFENDER . The Aspirator Pump and Sampling Hose are joined by a simple quick connect. The D4-AS01 Aspirator Pump is equipped with the squeeze bulb and an in-line water trap (Order #: D4-WT-1) When ordered, the

D4-AS01 includes a D4-HAS-10 10 ft. (3.1m) sampling hose (longer lengths available). The Sampling Hose is equipped with a Particulate Filter

(Order #: D4-PF-1).

To operate the Aspirator pump:

1.

Attach the Sampling Hose (or Sampling

Probe) quick connect to the in-line water trap on the Aspirator Pump. Turn right to lock them together.

2.

Attach the outlet hose on the bulb to the barb connector on the calibration cap.

3.

Fit the calibration cap overtop of an operating BW DEFENDER unit.

4.

Squeeze the bulb rapidly to draw sampled gases into the BW DEFENDER.

Note 1: Keep hoses clean and dry. Clean out clogged tubing by blowing or flushing with clean water. Allow to dry before use. Both the in-line water filter and

Particulate filters are replaceable.

MOTORIZED SAMPLING PUMP

CONVENIENCE: A BW DEFENDER equipped with motorized Pump and allows you to monitor in either Active Motorized Sample Mode or Ambient Diffusion Mode simply at the flick of the switch. The integral pump is never removed during either Active or

Ambient Modes of operation.

RELIABILITY: The high efficiency rotary vane pumps act like a small turbine. BW DEFENDER pumps provide better reliability and less friction that result in lower maintenance. The

BW DEFENDER pump is not pressure sensitive.

POWER: The Sampling Pump is powered by the BW DEFENDER. Eight hours of operation is expected.

SAMPLING PUMP INSTALLATION: The BW DEFENDER Sampling Pump, is installed at the factory if ordered together. The pump can be field installed if ordered separately.

1. Remove the 4 machine screws on the BW DEFENDER’s sensor endcap and remove the cap sensor screens. The pump is equipped with sensor screens.

2. Fit the pump unit on the BW DEFENDER in place of the missing endcap.

3. Using 4 machine screws (provided with the pump), attach the pump unit to the

BW DEFENDER. Secure firmly in place.

Note: Overtightening screws results in the Pump Slider Switch being stiff.

19 16

Page 19

CONFINED SPACE

The presence of a hazardous atmosphere is a major threat to workers in confined spaces. Special precautions are required - for workers who must enter a confined space - to protect workers from flammable or toxic atmospheres, oxygen depletion or enrichment.

To reduce the hazard, it is required that the atmosphere be tested prior to entering the confined space. In addition to monitoring prior to entry, it is required that the atmosphere be constantly monitored during entry and as long as people are in the confined space.

The BW DEFENDER is factory set to recommended alarm setpoints for:

OSHA (Occupational Safety and Health Association), and

OHS (Occupational Health and Safety)

The first alarms are set: Combustibles: 10 % LEL

Oxygen: 19.5 % Vol.

Carbon Monoxide: 35 ppm

Hydrogen Sulfide: 10 ppm

BW DEFENDER alarm setpoints are field adjustable for special applications.

DAILY OPERATION

1.

Turn your BW DEFENDER “ON”. All features and functions are activated. Leave the BW DEFENDER ON for the entire work shift to collect TWA (Time Weighted

Average) and PEAK Exposure data.

2.

In the event of a hazardous gas alarm take appropriate precautions immediately.

A gas alarm takes priority over any other types of alarms.

3.

TEST ALARMS: Verify proper alarm function prior to use with BW’s “Bump” Alarm

Test Gas. Alarm Test Gas is not intended to replace routine calibration, but rather to confirm proper alarm function between calibrations.

Apply Test Gas. All sensors should be in alarm while the gas passes over the sensors. Check and confirm operation of: LEDs, Alarm Icons, Backlight, and Audible

Alarm.

Note: Small quantity of gas required. DO NOT blast the sensors with “Bump” gas.

CAUTION: Any rapid up-scale reading followed by a declining or erratic reading may indicate a gas concentration beyond upper scale limit which may be hazardous.

CAUTION: High off-scale readings may indicate an explosive concentration.

15 20

Page 18

FIELD OPTIONS AUTO ZERO

GENERAL: The BW DEFENDER sensors can be AUTO ZEROED without the use of calibration gas. In a clean, normal environment free of background gases, initiate the

Calibration procedure (see page 23). All the sensors will be Auto Zeroed.

PASSWORD PROTECTION

GENERAL: Access (to calibration and alarm setpoints) can be restricted by the user.

“KEY ICON”: The key icon will illuminate and remain lit when Password is enabled.

1. Turn BW DEFENDER ON. Press and hold the key for 5 seconds. The unit will beep 4 times, than the word “OFF” will display and the LCD will go blank.

2. DO NOT RELEASE THE KEY - CONTINUE holding button down for an

additional 30 seconds. During this time the BW DEFENDER will do nothing.

NOTE: After 30 seconds, the screen will light, the word “OFF” will appear and two beeps will sound or000” will appear and the audible will beep once.

One Beep (“000”) - Change or Remove the Existing Password:

Tab

3.

Enter your current 3-digit password with the UP/DOWN Arrow keys. Press

after each digit. If the password is incorrect, the LCD will display “NO” and exit the password routine. If the unit beeps twice, continue as described below.

Two Beeps (“OFF”) - Enter a New Password: Do not use a password of “000” as

this is the OFF setting and it will disable password protection.

4.

Enter your new 3-digit password with the UP/ DOWN Arrow keys. Press

after each digit.

5.

The BW DEFENDER will beep three times. Enter the new password again to verify it is correct. If the two entries match, 4 Beeps will verify BW DEFENDER is locked. If they are different, the LCD will display “NO” and exit without setting the password.

6. The calibration lockout is maintained until the password is reset to “000”.

21

OTHER ALARMS

GENERAL: In addition to the gas hazard alarms, the BW DEFENDER provides a distinct alarm warning if the battery power is low, and to announce a missing sensor.

LOW BATTERY ALARM

Occurs when the battery voltage falls to a point where the battery approximately

30 minutes of useful life remaining.

Audible: Low-pitched “chirp” every 7 sec.

LEDs: Blinks in sync with audible

ICONS: “ALARM” word blinks every 2 sec.

LOW BATTERY” words blink in sync.

The low battery warning persists until the battery recovers or, if the battery is in danger of failure, the BW DEFENDER will execute an Automatic Shutdown (see page 10).

Observe carefully to ensure the battery does not fail without proper notification to the user.

Caution: Low Battery Alarm is replaced if the

Confidence Beep is activated. (See

“Confidence Beep”.)

MISSING SENSOR ALARM

Advises the detector is not intact and which sensor is missing.

Twin Toxic Sensor: Activates a Multi-Gas type alarm and the letters “SE” (Sensor) will blink on both the CO and the H

2

S displays.

This also applies if the “dummy sensor” is removed from the 2-gas version.

Combustible Sensor: Activates high alarm audible and visuals and the letters

Or” (overrange) blink on the EX display.

Oxygen Sensor: Activates low (Deficiency) alarm and the numbers “0.0” blink on O

2 display.

14

Page 17

AUDIBLE / VISUAL ALARMS

GENERAL:

Distinguish audibly and visually which gas hazard(s) is present, the alarm level(s) and type(s) of alarm: LOW, TWA, HIGH, or Multi-Gas alarm. During the different gas alarm pattern, the alarm LEDs blink on and off as the speaker sounds.

The speaker tone changes from a low tone to a high tone in a repeating pattern. The backlight is on, and remains on for the duration of the alarm condition.

Table 3: Audible and Visual Alarms

Indicator

ICON flashes

Audible sounds at:

Tone-Pattern

LEDs:

LCD Gas Display:

Low Alarm

“ALARM

1 Hz

Low to High -

High and TWA Level Alarm

“HIGH ALARM”

2 Hz

Low to High - faster

Both flash in sync with the affected Gas Readout.

Affected Gas Readout Blinks at 2 Hz. Backlight is lit.

LOW ALARM: Low alarm is activated when one of the detected gases has exceeded its low alarm setpoint.

HIGH ALARM:

High alarm is activated when one of the detected gases has exceeded its high alarm setpoint.

Also, when the TWA (Time-Weighted-

Average) exposure to a toxic gas exceeds the TWA alarm setpoint, High Alarm is activated.

NOTE: In TWA alarm, the affected toxic gas display(s) will blink even though the display may read “00”. To view Accumulated

Exposures see page 11.

The Low and High Alarms stop when the ambient gas level returns to the acceptable range.

MULTI-GAS ALARM: If more than one gas alarm hazard is present all alarm icons -

HIGH ALARM LOW - will blink along with the LCDs of the affected gases. The audible will change from 1 Hz pattern to a 2 Hz pattern and back again. Thus, multiple-gasalarm appears as a combination of both low and high alarm.

CAUTION: If the combustible gas sensor is exposed to an over-range condition, the sensor will be latched at over-range until the BW Defender is shut off and turned back on again.

13

MAINTENANCE

The rugged BW DEFENDER is designed to provide years of service with regular care and minimal maintenance.

1. Calibrate, test, and inspect the unit at regular intervals.

2. Keep an operations log of all events and occurrences.

EXTERIOR:

Clean the BW DEFENDER exterior with a soft damp cloth. Do not use solvents, soaps, or polishes on the detector.

DUST AND PARTICULATES: The Toxic and Oxygen sensors both have a replaceable washable screen and a built-in washable screen. Without opening the instrument, clean the screens with a soft, clean brush, water and mild soap.

Caution: Replace dirty and/or plugged screens and sensors.

NOTE: The combustible sensor has a sintered steel flame arrestor screen. Clean only with a dry brush.

WATER : Do not immerse in liquids. In the event the sensors become clogged by water, clean immediately. Drain the sensors and dry with a clean cloth.

Wait several minutes for them to air dry. Check that they are clean.

CAUTION: Removing the Twin Toxic sensor from the BW DEFENDER for longer than 10 minutes may destabilize the sensor. If this occurs, replace the sensor in the board and turn on the BW DEFENDER for 30 minutes before using.

22

Page 16

CALIBRATION

GENERAL: The BW DEFENDER, designed for easy calibration, will automatically set span and zero. The LCD advises you as each automatic function takes place and when to apply calibration gas.

IMPORTANT: BW DEFENDERMUST BE CALIBRATED USING GAS CONTAINING

CONCENTRATIONS OF TEST GASES THAT ARE EQUAL TO THE

FOLLOWING PRESET VALUES: Hydrogen Sulfide - 25 ppm, Carbon

Monoxide - 100 ppm, Methane (EX) - 2.5% (50% LEL), and Oxygen

(O

2

) - 20.9%.

NOTE 1: BW DEFENDER Quad Gas is available from BW Technologies. If calibrating only 1, 2 or 3 sensors - the test gas concentrations must be equal to the above for the target sensor(s).

RECOMMEND: Calibrate every month depending on use and sensor exposure to poisons and contaminants.

WARNING: Do not calibrate a BW DEFENDER which is in Low Battery Alarm. Do not remove the Battery from the detector during calibration. Doing so will cause all NEW calibration information to be lost, leaving the old calibration settings.

1. Calibrate only in a clean, normal environment free of background gases.

2.

Place a fully charged battery in the unit. Turn the BW DEFENDER on. Allow at least two minutes for the sensors to stabilize. together until the word “CAL” appears on screen (4 seconds). The BW DEFENDER will beep and flash the alarm LEDs advising calibration is being initiated. As well, the icons for AUTO ZERO, AUTO SPAN and Gas Bottle are displayed.

NOTE 2: If BW DEFENDER is password protected, enter the password before “CAL” is displayed

(See “Password Protection”).

4. AUTO ZERO: One beep will announce AUTO

ZERO has begun. Gas specific LCDs will display zeroes. The AUTO ZERO icon will flash

(approx. 5 seconds). The unit is now zeroed.

23

ALARM SETPOINTS

GENERAL: Each gas detected has two user-settable alarm points. Each setpoint can be individually adjusted by the user. Each set of alarm setpoints control different aspects of the BW DEFENDER'S behavior, as described below. Alarm setpoints can be password protected.

NOTE: An alarm level can be disabled by setting that alarm setpoint to zero.

TABLE 2: Alarm Setpoints Parameters and Factory Default Setpoints

Gas Monitored Symbol

Oxygen

Explosive Gases

O

2

EX

Carbon Monoxide CO

Hydrogen Sulfide H

2

S

Alarm Levels (EX: Factory default setpoints

Low TWA High

Deficiency

(10% LEL)

(35 ppm)

(10 ppm)

(35 ppm)

(10 ppm)

Enrichment

(20% LEL)

(200 ppm)

(15 ppm)

Model

2&4-gas

4-gas

Description of Sensor Alarm Setpoints

OXYGEN: The LOW alarm setpoint controls the one (1) Deficiency alarm, while the high alarm setpoint controls the one (1) Enrichment alarm. If the oxygen level drops below the LOW alarm setpoint, the unit will enter LOW alarm. If the oxygen level rises above the HIGH alarm setpoint, the unit will enter HIGH alarm.

Caution 1: It is not possible to set both alarms as deficiency alarms, or both alarms as enrichment alarms. Doing so will cause the unit to remain permanently in alarm until the alarm levels are reset.

EXPLOSIVE (Combustibles): The two alarm setpoints for the explosive gas sensor controls the level at which the unit enters LOW alarm and HIGH alarm.

TOXICS: For H

2

S and CO, the LOW alarm setpoints control both the instant LOW alarm level and the TWA (time-weighted-average) alarm level. When the LOW alarm setpoint is exceeded, the unit will enter LOW alarm. If the accumulated

TWA level should exceed the LOW alarm setpoint, the unit will enter HIGH alarm.

Caution 2: The INSTANTANEOUS LOW alarm setpoint and the TWA alarm setpoint are identical. It is not possible to set the LOW alarm at one level, and TWA alarm at a different level. Setting the LOW alarm setpoint OFF will disable the

TWA alarm. The toxic INSTANTANEOUS HIGH alarm setpoint controls the level at which the unit will enter HIGH alarm.

12

Page 15

ACCUMULATED EXPOSURE LEVELS

GENERAL:

The 4-gas BW DEFENDER automatically calculates the TWA (Time-

Weighted-Average). Exposure of H

2

S and CO (toxic) gases based on the standard

8 hour work day. The BW DEFENDER also records and displays the Peak Exposure encountered for each gas. These measurements are referred to as:

AE” = Average Exposure or TWA (Time-Weighted-Average)

PE” = Peak Exposure encountered (the maximum hazard)

To view:

1.

Press and hold the key until the letters “AE” (or “PE”) appear (5 sec.).

NOTE 1: TWA measurements do not apply to oxygen or explosive gases. The 2-gas BW DEFENDER skips directly to the “PE” peak readings.

TWA PPM READOUTS (4-gas BW DEFENDER)

First: “AE” will appear, in both, H

2

S and CO displays, followed by the TWA exposure readings in ppm for each gas.

PEAK HAZARD EXPOSURE READOUTS (2-gas and 4-gas BW DEFENDERS)

2

ND

:

Next “PE” will appear on the displays followed by the Peak

Exposure readings in ppm, % or % LEL for each gas monitored.

NOTE 2: For H

2

S, CO and EX, the Peak is the maximum exposure to gas encountered. For oxygen, the “Peak” hazard is actually the lowest oxygen deficiency level experienced.

DISPLAY BACKLIGHT: For easy reading in poor light, display backlight is lit.

3

RD

: The detector will return automatically to normal operation, displaying the gas present, and the backlight will turn OFF.

CAUTION: Accumulated exposures (TWA & PE) automatically reset when the

BW DEFENDER is turned OFF. DO NOT turn the unit off during the workday,

TWA and the Peak Exposure measurements will be reset.

11

ALARM SETPOINTS

AUTO SPAN: BW DEFENDER will automatically adjust each responding sensor. First, a beep advises Auto Span has started. Then the “AUTO SPAN” and “Gas Bottle” icons will flash for 10 seconds. Apply the Test Gas before the end of the 10 second delay.

5. Attach hose to calibration cup. Place cup over the sensors and open gas regulator valve fully (0.5 LPM).

NOTE 1:

The BW DEFENDER will scan for 30 seconds to check if Test Gas is being applied to any, or all, sensors. Real-time sensor readings will display on the

LCD. If calibration gas is not detected by a sensor, it's

LCD will flash and blank out for the duration of the Auto

Span. (The previous calibration information is retained by the sensor.)

NOTE 2: An audible sound advises that the AUTO

SPAN has begun.

Sensor Span Time: TWIN Toxic - 2 min.; Oxygen and

Combustible - 15 seconds.

WARNING: CALIBRATION GASES MUST FLOW UNTIL THE AUTO SPAN

OPERATION IS COMPLETE, EVEN THOUGH THE LCD DISPLAYS MAY BE

STABLE BEFORE THE SPAN OPERATION IS COMPLETED.

6. Three beeps announce AUTO SPAN has ended. Shut off and remove calibration gas. Alarm setpoints will be displayed and may be adjusted if desired.

ADJUSTING ALARM SETPOINTS

1. The low alarm setpoint for the first available sensor is displayed on the LCD panel.

Use the UP/DOWN arrow keys to adjust the alarm setpoint.

NOTE: Setting the alarm point to zero will disable affected alarm for that sensor. setpoints quickly. Pressing no key causes the unit to automatically advance through the setpoints after a short delay.

3. Repeat steps 1) and 2) to set each sensor and alarm setpoint or skip all of the available alarm setpoints. After the last alarm setpoint has been set, there will be a short pause. The unit will then sound 4 beeps, and show “ACC” (Accept) on the

LCD display. Calibration is now complete, and the unit will return to normal operation.

24

Page 14

25

Replaceable Sensor Screens

#M1785

BATTERY TEST

GENERAL: The BW DEFENDER continuously monitors the performance and condition of its battery. During normal operation, the unit displays “Battery OK” in the bottom left hand corner of the LCD display.

LOW BATTERY ALARM: Should the unit detect a battery in the early stages of running down, the unit will emit a low battery warning alarm. (See page 14.) This warning will persist until the battery in the unit is replaced, or the battery is nearly dead.

If the low battery condition persists long enough, the battery will be in danger of running down to the point where the unit can no longer accurately measure gas.

Once this happens, the unit will execute an automatic shutdown (see below).

AUTOMATIC SHUTDOWN

AUTO-SHUTDOWN: Should the battery be in immediate danger of dropping below the minimum operating voltage, the

BW DEFENDER will automatically shut down. Auto-Shutdown is preceded by approximately 30 minutes of low battery alarm.

Auto-Shutdown is announced by: a) 8 beeps and flashing alarm LED's. b) The unit will turn off the LCD display

except for the “BATTERY LOW” icon, which will flash periodically to remind you that the unit is in need of a charged battery.

10

Page 13

DEACTIVATING THE DETECTOR

GENERAL:

The BW DEFENDER “OFF” function is designed to prevent accidental shut off, and will warn you that the BW DEFENDER is being shut down.

1. To deactivate, press the (ON/OFF) key firmly and hold it down until the word “OFF” appears on the screen (approximately

4 seconds).

OFF WARNING: Prior to the “OFF” readout the detector will emit 4 beeps and flash the alarm LEDs as a warning that the unit will be shutting down. Shut down will occur after the word “OFF” displays.

NOTE: If the button is released before

4 seconds have elapsed, the unit will not shut off. If this happens accidentally: Press the key again for 4 seconds.

BACKLIGHT DISPLAY

Access the BW DEFENDER LCD backlight feature to view the display in poor light.

The backlight will remain lit for about

5 seconds, and then automatically shut off.

# The backlight is automatically activated if any gas alarm condition exists.

NOTE: If the key is held down over 5 seconds, the TWA and Peak Exposure information will be displayed. (See “Accumulated

Exposure Levels”.) The backlight will deactivate automatically after the TWA information is finished displaying.

SENSOR REPLACEMENT

GENERAL:

The Twin Toxic, Oxygen and the Combustible sensors have a two

(2) year warranty. Sensors should be replaced at the end of their warranty period.

Replace dirty or plugged sensors immediately. Failure to do so may compromise the unit's effectiveness as a safety instrument.

SENSOR PLACEMENT: With the LCD (front of the BW DEFENDER) facing you:

Oxygen Sensor (Black band) - Left hand side (nearest the battery)

(2 year: # O2-A2) (1 year: # O2-A1)

Twin Toxic Sensor (Turquoise band) - Middle Sensor

Combustible Sensor (Silver sensor) - Right hand side

NOTE : Leave the shorting wire across the pins of the Twin Toxic sensor until just before installation.

1. With the BW DEFENDER turned OFF, remove the 4 screws on the top endcap.

Remove the top endcap and the replaceable sensor screens.

2. Using a pair of needlenose pliers or similar tool, grasp the desired sensor firmly and pull straight out. Rocking the sensor back and forth gently may help free tightly held sensors. Do not use excessive force or sensors may be crushed.

3. Line up and insert the replacement sensor. It fits one way only. Push firmly into the mating sockets. Do not force into place. When fully seated, all sensors will be approximately the same height.

4. Replace the endcap and sensor screens with the 4 screws. Tighten the screws only slightly more than finger tight.

5. Turn the BW DEFENDER ON for 30 minutes and then calibrate the monitor. (See

“CALIBRATION”.)

UPGRADING: 2-gas BW DEFENDERs may be upgraded to a 4-gas BW DEFENDER in the field with the D4-UPGRADE1 Kit.

SENSOR STORAGE:

Sensors should be stored in a cool place (0 to 20°C

(32 to 68°F)). Keep in the sealed container they were shipped in.

9 26

Page 12

Updated Nov, 2000 English D1218/3 Page 26 (take out one (1) year O2 warranty in first paragraph; distinguish 1 yr vs.2 yr.O2 sensor)

FIELD OPTIONS CONFIDENCE BEEP

GENERAL:

Once activated the Confidence Beep will BEEP once every 6 seconds to advise that it is operational.

IMPORTANT: As shown in the table below, the confidence beep option reverses the normal behavior of the BW DEFENDER low battery alarm. When the confidence beep is enabled, the BW DEFENDER will emit a short beep once every 6 seconds when the battery is okay. The BW DEFENDER will not beep when the battery is low.

Table 4: Confidence Beep Effect on Low Battery Alarm

Confidence beep

Not Activated

When battery is OK

Battery alarm is Silent

When battery is low

Battery alarm is Active

Enabled Confidence Beep is Active Confidence Beep is Silent

To enable the confidence beep option, do the following:

1. Turn the BW DEFENDER ON. Wait until it is fully ON.

2. Press and hold the (ON/OFF) key. The detector will turn off. Continue to hold the ON/OFF key—DO NOT RELEASE THE (ON/OFF) key.

3. After 30 seconds, the BW DEFENDER will reactivate and emit one or two beeps.

The screen will light and the word “OFF” (or “000”) will appear on the screen.

Release the button. The User Input prompt Icons will appear at the bottom of the screen.

If the BW DEFENDER beeps once: (“000” appears) – Unit is password protected.

4a. Enter the current password by setting each of the 3 digits with the !UP/ "DOWN keys. Press TAB after each digit. If the password is incorrect, the LCD will display

“NO” and return to normal operation. If the BW DEFENDER beeps twice, continue as described below.

If the BW DEFENDER beeps twice (OFF appears):

4b. Enter the Field Option Code “777” using the !UP/ "DOWN keys. Press the TAB key to advance to the next digit.

5. After a pause, the unit will beep 3 times to confirm the entry was correct. Now enter the Confidence Beep Code “002”.

6. After a pause, the BW DEFENDER will beep 4 times to confirm acceptance. Once this is complete, the BW DEFENDER will begin to emit the Confidence Beep and the unit will return to normal operation.

WARNING: INCORRECTLY ENTERING THE FIELD OPTION CODES 777 AND/OR

002 LISTED ABOVE MAY ERASE THE CURRENT PASSWORD FROM

THE BW DEFENDER UNIT. IF THIS HAPPENS, THE PASSWORD

WILL HAVE TO BE MANUALLY RESET. (See page 21.)

27

Updated Nov, 2000 English D1218/3 Page 27 (last sentence changed to page 21)

OPERATION ACTIVATING THE DETECTOR

GENERAL: BW DEFENDER automatically executes a self test to verify the audible and visual alarms and all segments of the LCD display. If the earphone is plugged in, it will be tested at this time as well.

1. Press ON/OFF key firmly.

FIRST: The Audible/Visual alarms will activate.

All LCD display segments will light.

2ND: The current LOW and HIGH alarm setpoints are displayed for all 4 gases simultaneously. Observe the readout.

ALARM LOW icon is displayed and the ppm, % or % LEL setpoint for each gas.

HIGH ALARM icon is displayed and he ppm, % or % LEL setpoint for each gas.

3RD: The BW DEFENDER will display a

30 second countdown to normal operation.

The LCD display will show:

On in ##” (number of seconds)

AMBIENT LEVELS:

After the delay, the

BW DEFENDER will show the ambient levels of the target gases present in the immediate area.

The unit also begins Time-Weighted-Average

(TWA) measurements of the target toxic gases

(if any) and begins recording the Peak Exposures encountered.

PLEASE NOTE: Because of unavoidable minor variations in components, some sensors may take slightly longer than 30 seconds to stabilize. These sensors may temporarily go into alarm, or show non-zero values for up to 30 additional seconds before returning to zero. This is normal and is not a sign of malfunction.

8

Page 11

GETTING STARTED DISPLAY ICONS

GENERAL:

BW DEFENDER icons and intelligent alpha-numeric display provide clear

“Status at a Glance” advice at all times. Only applicable icons will be displayed at any one time.

What the Various Icons Mean:

1) Alarm Icons: One or more of these icons will light up during an alarm condition:

HIGH indicates high alarm; LOW indicates low alarm. Both HIGH and LOW are lit up during a Multiple Gas sensor alarm.

2) Gas Bar Icons: Identify the gas measured and the units of measure (ppm, %, and

%LEL). Gases not being measured are not displayed.

3) Calibration Icons: Shown only when the unit is performing calibration operations.

4) Key Icon: Appears when calibration and alarm setpoint adjustment is password protected, or locked out. Also appears if the password is required from the user.

5) Up and Down Arrows: Appear when the unit is waiting for user input. This occurs during password entry and alarm setpoint entry.

6) Fan Icon: Indicates condition of the motorized sampling pump (if one is installed).

The fan spins if pump is operational, and flashes when the pump is plugged.

7) Battery Icons:

Continuously display the condition of the battery.

2-GAS to 4-GAS UPGRADE

GENERAL: D4-2002 (4-gas) BW DEFENDERS — operating toxic gas sensor

D2-2002 (2-gas) BW DEFENDERS — “dummy” sensor

The Twin Toxic sensor can be added and the BW DEFENDER programming can be changed at any time to turn a 2-gas BW DEFENDER into a 4-gas BW DEFENDER.

Upgrade a 2-gas to a 4-gas BW DEFENDER, do the following:

1. Turn the BW DEFENDER off. Remove the endcap.

2. Remove the middle “dummy” sensor and replace with a new BW DEFENDER

Twin Toxic sensor. Replace the endcap.

3. Press and hold the (ON/OFF) key. The detector will turn off. DO NOT

RELEASE THE ON/OFF KEY.

4. After 30 seconds, the BW DEFENDER will reactivate and emit one (1) or two (2) beeps. The screen will light and the word OFF will appear on the screen. Release the button. The User Input prompt Icons will appear at the bottom of the screen.

If the BW DEFENDER beeps once: The BW DEFENDER is password protected.

5a. Enter the password by setting each of the three digits with the !UP, "DOWN keys. Press TAB to advance to the next digit. If the password is incorrect, the

LCD displays “NO”, and returns to normal operation. If the BW DEFENDER beeps twice, continue as described below.

If the BW DEFENDER beeps twice:

5b. Enter Field Option Code “777” using the !UP, "DOWN keys. Press the TAB key to advance to the next digit,

6. After a pause, the unit beeps 3 times to confirm the entry was correct. Now enter the Sensor Upgrade Code “001”.

7. After a pause, the BW DEFENDER will beep 4 times. Then the BW DEFENDER will begin showing gas measurements for all 4 measured gases.

The unit is now a 4-gas BW DEFENDER, capable of measuring toxic gases as well as LEL and O

2

.

WARNING 1: RECALIBRATE THE UNIT IMMEDIATELY AFTER PERFORMING

THE UPGRADE. FAILURE TO DO SO WILL COMPROMISE THE

BW DEFENDER'S EFFECTIVENESS AS A SAFETY INSTRUMENT.

WARNING 2: INCORRECTLY ENTERING THE FACTORY CODES 777 AND/OR

001 LISTED ABOVE MAY ERASE THE PASSWORD FROM THE

BW DEFENDER. IF THIS HAPPENS, THE PASSWORD WILL HAVE

TO BE MANUALLY SET. (See Page 21.)

28

Page 10

Updated Nov, 2000 English D1218/3 Page 28 (models changed to D4-2002, D2-2002; last sentence changed to page 21)

TROUBLESHOOTING

This section lists some common errors and their solutions. If you are unable to solve the problem, please contact BW Technologies for assistance.

Problem

Unit will not turn ON.

Display doesn't show

CO or H

2

S measurements.

Unit does not display

TWA measurements.

Unit does not enter alarm.

Unit enters alarm immediately when turned on.

Unit does not respond to keypad.

Unit does not accurately measure gas.

Unit does not display maximum level of oxygen detected.

Possible Cause

No battery.

Battery is dead.

Unit is damaged or defective.

This is a 2-gas version

BW DEFENDER, which does not measure toxic gases.

This is a 2-gas version

BW DEFENDER, which does not measure toxic gases.

Alarm points are set incorrectly.

Alarm setpoint(s) may be set to zero (off).

Unit is in calibration mode.

Sensors are not yet stable.

Battery warning alarm - battery is weak.

Sampling pump is plugged.

Sensor is missing from unit; or defective sensor.

Battery is dead.

Unit is performing operations that require no user input.

Unit requires recalibration.

Unit is colder/hotter than gas being measured.

Sensor screens are clogged and dirty.

Sensor(s) require(s) replacement.

Sensor is missing from unit.

Peak detection for oxygen: displays the lowest value, not the highest value detected.

Solution

Install battery.

Replace and/or recharge battery.

Contact BW.

Contact BW for kit to upgrade to the, 4-gas version (D4-2002).

Contact BW for kit to upgrade to the 4-gas version.

Reset alarm setpoints to correct values.

Reset alarm setpoints to correct values.

Recalibrate unit immediately.

Wait for 60 seconds.

Replace/recharge battery.

Remove obstruction.

Replace sensor.

Replace and/or recharge battery.

Keypad operation will be automatically restored at the appropriate time.

Recalibrate unit.

Allow unit to acquire ambient temperature before use.

Clean sensors.

Replace sensor(s).

Replace sensor.

Unit is operating normally.

29

WRIST STRAP

1. Thread the split ring onto the silver lanyard anchor located on the bottom back of the unit. Attach the strap to the split ring. The strap has a break away safety feature.

GENERAL:

All operating features and functions are activated by the rubber keypad. The keypad operation is designed to prevent accidental activation of any function.

The BW DEFENDER will advise you each time a function is accessed, and when automatic functions, are taking place. Press the keys down firmly. Each button has multiple functions, which are discussed in the appropriate sections of this manual.

6

BW DEFENDER KEYPAD

Page 9

GETTING STARTED BATTERY

GENERAL: For safety and ease of use, the battery is housed in an exterior separate battery compartment. You never have to open the monitor to change, or charge, the batteries.

OPERATION: 12-13 hours on rechargeable NiCad

(8-8.5 hours with motorized Pump)

WARNING: ONLY USE THE BLACK & DECKER VERSAPAK™ VP100 BATTERY

INSERTING THE BATTERY

1. Unlock the tan battery lock ring by sliding it fully left.

5

2. Insert the battery (contact end first) into the unit until it is fully inserted.

3. Rotate battery lock ring from

UNLOCKED to the LOCKED (fully right) position to hold the battery in place. The lock ring will click into place when it is fully sealed.

CAUTION: THE BATTERY LOCK RING

MUST BE FULLY ENGAGED

(CLICKED SHUT IN THE “LOCK”

POSITION) BEFORE USE.

REMOVING THE BATTERY

1. Slide the battery lock ring to

UNLOCKED position (fully left) and pull the battery straight out.

WARNING: DO NOT REMOVE OR

REPLACE THE BATTERY IN A

HAZARDOUS AREA. DOING SO

WILL IMPAIR THE INTRINSIC

SAFETY OF THE UNIT, AND MAY

LEAD TO FIRE OR EXPLOSION.

Problem

Unit intermittently enters alarm without apparent reason.

TROUBLESHOOTING

Possible Cause

Ambient gas levels are near alarm point.

Puff of gas.

Alarms set incorrectly.

Weak battery.

Missing and/or faulty sensor.

Pump unit is partially plugged.

Solution

Unit is operating normally. Use caution in suspect areas. Check maximum exposure reading.

Reset alarm points.

Replace and/or recharge battery.

Replace sensor.

Clear obstruction in pump hose.

Unit does not read zero when turned on.

Unit does not accurately measure gas - display varies frequently - alarm sounds frequently.

Alarm LEDs are dim and beeper is weak when unit enters alarm or self-test.

Unit shuts off without operator intervention. Display reads

“BATTERY LOW”.

Unit does not alarm when O

2 sensor is removed.

Sensor has not had time to stabilize.

Detector requires recalibration.

Ambient gas is present.

Sensor is missing.

Battery is almost dead.

Automatic Shutdown feature has operated due to weak battery.

Low (deficiency) alarm for O

2 sensor - shut off by user.

Wait 60 seconds for sensor to stabilize.

Recalibrate unit. Quick

Calibration may be sufficient.

Detector is operating properly.

Use caution is suspect areas.

Replace sensor.

Replace and/or recharge battery.

Replace and/or recharge battery.

Reset alarm point to correct value.

Unit does not alarm when explosive sensor is removed from unit.

Unit displays “SE” in both H

2

S and CO displays; stays in alarm.

Pump does not run when attached to unit.

Unit will not auto zero or calibrate.

O

2

sensor reading is erratic.

High alarm for LEL sensor has been shut off.

Toxic sensor is missing from the unit.

Pump is not turned on.

Pump is plugged.

Pump is defective.

O

2

sensor replacement may not be compatible.

Reset alarm point to correct value.

Replace toxic sensor or dummy toxic sensor (D2-2002 only) in

2-gas BW DEFENDER.

Push vents closed to turn on pump.

Clear hoses.

Replace pump unit.

Change O

2

sensor.

D4-2002 2 year O

2

D4-2000 1 year O

2

(#SR-X10)

(#SR-X10)

30

Page 8

Updated Nov, 2000 English D1218/3 Page 30 (changed to D2-2002; Added last row for oxygen

OPERATING SPECIFICATIONS

Primary Sensitivity:

Measuring Range:

Maximum Overload:

Detectable Accuracy:

Response @ T

50

:

Readout Increments:

Long Term Drift: Zero:

(% signal loss/year) Span:

Sensor Warranty:

Combustible

EX

%LEL

0-100%

1 %

≤6 (Note 1)

1%

Nominal

<5%

2 Years

Oxygen

% O

2

0-25%

30 %

0.1%

≤2

0.1%

Nominal

<5%

2 Years

Carbon

Monoxide

CO ppm

Hydrogen

Sulfide

H

2

S ppm

0-500 ppm 0-100 ppm

1500 ppm

1 ppm

≤7

5 ppm

Nominal

<5%

2 Years

500 ppm

0.5 ppm

≤5

1 ppm

Nominal

<5%

2 Years

Operating Humidity: 15 to 90%

Operating Pressure Range: Atmospheric ±10%

Note 1: Response typically less than 2 seconds @ T

50

Note 2: All performance data is based on conditions a 20°C (68°F), 50% RH and

1013 mBar (1 atm)

CAUTION:

The BW DEFENDER combustible sensor is highly poison resistant. All catalytic sensors should be protected from exposure to lead compounds, silicones, chlorinated hydrocarbons. Certain organic vapors (e.g. leaded gasoline and halogenated hydrocarbons) may temporarily inhibit the sensor performance, in most cases it will recover after calibration.

GETTING STARTED POWER

GENERAL: Familiarize yourself with all operating features and functions of the

BW DEFENDER. The BW DEFENDER is calibrated at the factory. User selectable

Alarm Setpoints have been set to relevant safety standards. The BW DEFENDER will advise the current Alarm Setpoints each time it is turned ON. If the user wishes to reset the Alarm Setpoints, refer to “ADJUSTING ALARM SETPOINTS”.

BATTERY AND CHARGER: Batteries must be charged before use.

WARNING: ONLY CHARGE BATTERIES USING A BLACK & DECKER

VERSAPAK™ CHARGER. DO NOT USE ANY OTHER CHARGER.

FAILURE TO OBSERVE THIS PRECAUTION COULD LEAD TO FIRE

OR EXPLOSION.

CAUTION: READ AND OBSERVE ALL INSTRUCTIONS AND PRECAUTIONS IN

THE BLACK & DECKER LITERATURE PROVIDED WITH THE

BW DEFENDER. FAILURE TO DO SO MAY RESULT IN FIRE,

ELECTRIC SHOCK OR OTHER FORMS OF PERSONAL INJURY OR

PROPERTY DAMAGE.

FIRST TIME CHARGE : The charger supplied with the BW DEFENDER is a VAC

2-port charger, which requires approximately 6 hours (both batteries) for a first time charge.

NORMAL CHARGE TIME:

After the first use, battery charging times decrease.

Normal charge time:

2-port VAC Charger - 3-4 hours for 1 to 2 batteries

Black & Decker VERSAPAK™ chargers (other than the 2-port charger included with the BW DEFENDER) may be used with BW DEFENDER batteries. Refer to the instruction manual provided with the specific charger unit for charging instructions.

NOTE: Batteries can be left in the VAC charger until required for use.

31

Updated English D1218/3 Nov/00 P31. (O2 warranty changes to 2 years)

Nov/00 P4. (deleted D4-VP160 in three places)

4

Page 7

Fig.1: BW DEFENDER FEATURE DRAWING

A Low & High Alarm

Setpoints Display each time the unit is turned

ON

B Black & Decker

“VersaPak” rechargeable battery with locking switch

C Dual Mode Sampling

Pump

D “Sunbright” Flashing

Alarm LEDs

E Audible Alarm

F One Button Operation

G Keypad to set Alarm

Levels and Enter

Password

H Stores TWA and Peak functions

This manual covers the following BW DEFENDER instruments: Note: The models listed below contain the new BW Defender 2 year oxygen sensor.

Order No. Description

D4-2002 4-gas Detector

D4-2002-SP 4-gas Detector (motorized Sampling Pump installed)

D2-2002 2-gas Detector

Note: To include 110 VAC charger add no suffix. To exclude charger add suffix: “-A”.

To include 230 VAC charger add suffix: “-UK” - UK/Ireland plug; “-EU” Continental European plug.

Table 1: BW DEFENDER GAS DETECTORS

Gas Bar

Gas Monitored Unit of Measure

Symbol

BW Defender

Version

Oxygen

Explosive Gases

Carbon Monoxide

Hydrogen Sulfide

O

2

EX

% of ambient air

% of lower explosive limit (LEL)

CO Parts-per-million (ppm)

H

2

S Parts-per-million (ppm)

4-gas

2-gas

4-gas only

3

SPECIFICATIONS

DETECTOR: Multi-Gas with advanced microcontroller based operation

Power: Rechargeable NiCad battery: Operation -12 hrs. ; Charge time - 3 hrs.

Temp. Range: -20 to +50°C (-4 to +122°F)

Humidity: 5 to 95 % RH non-condensing

Self Test: Automatic when the BW DEFENDER is turned on

Records/Displays: 1. TWA (Time Weighted Average) Exposure

2. Peak Exposures

Calibration: Automatic Zero and Span

Security: Password protection for calibration and alarm setpoints

SENSORS: Combustible: Plug-in catalytic bead

Toxics and Oxygen: Plug-in 2 year electrochemical cells

DISPLAY: Four (4) extra-large gas specific alpha-numeric LCDs

Alarm Setpoints: Displayed each time the unit is turned on

Backlight: Pushbutton; Automatic in Alarm

ALARMS: Audible: 90 dB @ 0.3 m (1 ft. ) variable pulsed beeper

Visuals: 1. Two (2) flashing “sunbright” LEDs

2. Gas specific LCD flashes in alarm

Levels: Two setpoints per sensor (user adjustable):

TOXICS: Low & High (TWA, STEL)

OXYGEN: Deficiency (High) & Enrichment (Low)

COMBUSTIBLES: Low & High

Other Alarms: Multiple Gas Exposure; Sensor Removed; Calibration Air; Low Battery

Size: 11.9 x 10.3 x 2.9 cm (4.7 x 4.04 x 1.13 in.)

(with Pump) 15.2 x 10.3 x 2.9 cm (6 x 4.04 x 1.13 in.)

Weight: 375 g (13.27 oz.) including battery

424 g (14.85 oz.) including Pump & battery

Enclosure: Rugged, composite material, RFI/EMI shielded

SAMPLING PUMP: Powered by BW DEFENDER

Switch: Activates Active Sampling or Diffusion Mode operation

Active Mode: Fan ICON indicator

Low Flow: Activates Alarms (both Audible and Visual)

Flowrate: 300-350 ml/min with 3 m (10 ft.) hose and filters (dependent on pump)

Input Pressure: 1.25 kPa

Water Trap (built-in): Hydrophobic Teflon replaceable filter

Current Draw: 75 mA

Battery Life: Expected 8 hours (NiCad)

SAMPLE HOSES: Tygon hose equipped with particulate filter and quick connect

Length: Standard 3 m (10 ft.); maximum length 15 m (50 ft.)

SAMPLE PROBES: 0.3, 0.9 or 1.8 m (1, 3 or 6 ft.) polycarbonate probes with handle and quick connect

32

Page 6

Updated Nov, 2000 English D1218/3 Page 3 (models changed to D4-2002, D2-2002, to D4-2002-SP)

ACCESSORIES AND PARTS LIST

! BW DEFENDER ACCESSORIES

Part # DESCRIPTION

D4-VP140 ............ 2-port vehicle 12 volt charger

D4-2-LC ............... Leather carrying case with belt clip

D4-2-EC ............... Hard-sided Equipment Carrying Case

D4-E2358 ............ BW DEFENDER Earphone c/w sampling hose

D4-SP01 .............. Motorized Sampling Pump c/w sampling hose

D4-AS01 .............. Hand Aspirator Pump c/w sampling hose

MM-PROB1 ......... 0.3 m (1 ft.) Search Probe c/w handle

MM-PROB3 ......... 0.9 m (3 ft.) Search Probe c/w handle

M1858 ................. Dilution Tube

D4-UPGRADE1 ... 2 to 4 gas upgrade kit including D4-RHM04 sensor

! BW DEFENDER SPARE PARTS

D4-RHM04 ........... TWIN Toxic Sensor for CO and H

2

SR-X10 ................ O

2

D4-RX06 .............. O

2

D4-RW90 ............. Combustible Sensor

S c/w filter

Sensor (2 year) c/w filter (compatible with: D4-2002; D2-2002 units only)

Sensor (1 year) c/w filter (compatible with: D4-2000; D2-2000 units only)

M1758K ............... Toxic and Oxygen Sensor Replacement Screens (Kit of 10)

D4-PF-1 ............... Particulate filter for Sampling hoses

M1864K ............... Water trap filters for Sampling Pump D4-SP01 (Kit of 10)

D4-WT-1 .............. In-line water trap for Aspirator Pump

D4-HSP-10 .......... 3 m (10 ft.) Sampling Pump Hose

D4-ASP-10 .......... 3 m (10 ft.) Aspirator Pump Hose

M0931K ............... Quick connector spares for Sampling Pump (Kit of 2)

M1812K ............... Quick connector spares for Aspirator Pump (Kit of 2)

D4-VP100 ............ VERSAPAK 3.6 volt NiCad battery

GA-VP110 ........... VERSAPAK 3.6 volt NiMH battery

D4-VP135 ............ 2-port 110 VAC Charger Kit c/w VERSAPAK batteries

D4-VP135-EU ...... 2-port 230 VAC Charger Kit - Continental European plug

D4-VP135-UK ...... 2-port 230 VAC Charger Kit - UK/Ireland plug

D4-M1725 ............ Break-away Wrist Strap

D4-M1713 ............ Calibration Cup

BW DEFENDER FEATURES

! AUTOMATIC ZERO: Sets oxygen range to 20.9% and other ranges to zero and automatically nullifies small differences in sensor output in a limited range.

! USER SETTABLE ALARM LEVELS: Simply reset the factory set levels with the

UP/DOWN keys to change alarm levels.

! PEAK EXPOSURES ENCOUNTERED: Displays the highest combustible and toxic gas levels, plus the lowest oxygen level since the instrument was last cleared or turned ON.

! TWA MODE: Display of accumulated Time-Weighted-Average level for toxic gas range(s) since the last time the memory was turned ON.

! LOW BATTERY WARNING: Both audible and visual warnings advise there is approximately 30 minutes of operation left. The audible will chirp every 7 seconds,

ALARM and LOW BATTERY icons will light, and the alarm LEDs will flash.

! GAS ALARM PRIORITY: Gas alarms take priority over any other type of alarm.

! RUGGED RFI RESISTANT DESIGN: BW DEFENDER is constructed of composite RFI materials for advance RFI protection. The rugged enclosure has been designed with added strength to endure industrial use.

! CONVENIENCE AND SAFETY: Monitor in either active or diffusion mode at the flip of a switch when using a BW DEFENDER equipped with Sampling Pump. The low maintenance, high efficiency rotary vane pump design provides better reliability.

33 2

Page 5

Updated English D1218/3 P.2 Nov/00 (removed 2nd last bullet on Approvals)

Nov/00 P.33 (2 year O2 sensor added and 1 year O2 sensor distinguished from 2 year; D4-VP160 removed; D4-1-LC changed to D4-2-LC –fits Schwartzer pump)

BW DEFENDER INTRODUCTION

The BW DEFENDER is designed for field friendly operation with large, bright, gas/ alarm indicators and one button operation. The BW DEFENDER provides effective protection with the advantage of microcontroller based operation and the most advanced sensing technology available.

! ADVANCED SENSING TECHNOLOGY: The NEW TWIN TOXIC sensor employed in the BW DEFENDER has two separate chambers within one sensor enclosure which provide independent gas sensing and signal outputs. This is not to be confused with Dual Toxic sensors which are simply unfiltered carbon monoxide sensors.

! BLACK & DECKER VERSAPAK™ VP100 BATTERY OPERATION: The NiCad batteries are readily available in over 70 countries worldwide. VP100 batteries are designed with zero memory cells for repetitive charging. Standard recharge time with a VAC Charger is three hours. The batteries can be left in the VAC charger

(provided) without damage. VERSAPAK batteries have a minimum life of 300 charge cycles.

! MICROCONTROLLER BASED OPERATION: The BW DEFENDER is designed with a microcontroller that ensures reliability. The advanced minicomputer in the

BW DEFENDER offers more built-in features and functions.

! LIQUID CRYSTAL DISPLAY: The extra-large LCD indicates the gas and concentrations for 4 gases at one time. As well, it advises whenever the

BW DEFENDER is performing automatic functions. The graphic display icons provide simple and clear alarm status advice.

! DISPLAY BACKLIGHTING: The backlight automatically activates whenever an alarm condition exists. This feature can be accessed at any time with the touch of a button to view the display in poor light.

BW DEFENDER MULTI-GAS DETECTOR comes complete with:

• Wrist Strap

• Black & Decker Two-Port 110 VAC Charger c/w Manual

• 2 VERSAPAK NiCad Batteries

• Calibration Cup

• BW DEFENDER Manual

Also available BW Defender Confined Space Kits

D4-CS-KIT BW Defender Confined Space Kit with Motorized Sampling Pump

D4-AS-KIT BW Defender Confined Space Kit with Aspirator Sampling Pump

Note 1: Order Number D4-2002-SP (Motorized Sampling Pump - included;

Calibration Cup - not included since not required).

Note 2: Order with the suffix “-A” to exclude the 2-port charger.

Note 3: Order with the suffix “-EU” for 230 VAC Charger - Continental European plug

Note 4: Order with the suffix “-UK” for 230 VAC Charger - UK/Ireland plug

CALIBRATION RECORDS

Date Calibrated Calibrated By

34 1

Page 4

Updated May 30, 2000 English D1218-2.1 Page 1 (City Removed, -EU model added)

P34. English D1218/3: Nov/00 (model D4-2000-SP changed to D4-2002-SP)

Feb 12/01 (Note 3/4 “-EU,-UK”, Note 2,3 “models” to “order”)

SPECIAL WARNINGS

Through engineering, design and testing as well as rigid manufacturing techniques and quality control, BW Technologies supplies the finest gas detection instrumentation available. The BW DEFENDER is designed to provide optimum performance and lower maintenance in rugged industrial use. The user, though, must recognize responsibility for maintaining the instrument in operational condition, ensuring proper operation and long-term use.

1.

Calibrate the detector before first-time use, and then at least once every 90 days.

2.

It is recommended that the accuracy of the BW Defender be checked with known concentration calibration gas before each day’s use and immediately after any know exposure to contaminants.

3.

The LEL sensor is factory calibrated to methane. If monitoring a different combustible gas, calibrate the sensor using the appropriate gas.

4.

BW recommends that a calibration check on a regular schedule, one at least every 30 days.

5.

Do not expose BW DEFENDER to electrical shock and/or severe continuous mechanical shock.

6.

Do not attach any other piece of equipment to the BW DEFENDER except those supplied by BW for the BW DEFENDER.

7.

Do not operate or attempt to modify the BW DEFENDER to operate on any battery or power source except the battery approved by BW Technologies.

8.

Do not attempt to disassemble, adjust or service the instrument unless instructions are contained in the manual for that procedure and/or that part is listed as a replaceable part. Use only BW DEFENDER replaceable parts.

9.

Do not immerse in liquid OR use high power sprays on the instrument.

10. Do not allow the sensor screens to become dirty or clogged.

11. BW Technologies gas detection instruments are primarily SAFETY devices for the protection of personnel and facilities and must always be “ready”. With proper maintenance the BW DEFENDER will provide many years of service. The user must assume all liability for misuse of BW Technologies gas detection instruments.

12. The instruments warranty will be voided if customer personnel or third parties damage the instrumentation during repair attempts.

Because BW Technologies is constantly developing and improving its products line, we reserve the right to change specifications without notice.

35

BW DEFENDER Operator's Manual

TABLE OF CONTENTS

Features

.............................................................................................................. 1

Order Numbers and Gases

................................................................................ 3

Getting Started

Power ............................................................................................................... 4

Battery (Insertion and Removal)

Wrist Strap

BW DEFENDER Keypad

Display Icons

............................................................................. 5

......................................................................................................... 6

...................................................................................... 6

...................................................................................................... 7

Operation

Activating the Detector ......................................................................................... 8

Deactivating the Detector ...................................................................................... 9

Backlight Display

Battery Test

................................................................................................. 9

........................................................................................................ 10

Auto-Shutdown ................................................................................................... 10

Accumulated Exposure Levels (TWA and PEAK Exposure) ........................................ 11

Description of Alarm Setpoints ............................................................................... 12

Audible & Visual Gas Alarm Patterns

Low Battery Alarm

..................................................................... 13

............................................................................................... 14

Missing Sensor Alarm .......................................................................................... 14

Confined Space Entry ........................................................................................ 15

Motorized Sampling Pump: Features and Installation ................................................. 16

Operation and Low Flow Alarm

Built-in Water Trap

Manual Aspirator Pump

......................................... 17

......................................................... 18

........................................................................................ 19

Daily Operation ................................................................................................... 20

Maintenance

Auto Zero for all Sensors

Password Protection

BW DEFENDER Care

...................................................................................... 21

............................................................................................ 21

Calibration

Sensor Replacement

.......................................................................................... 22

......................................................................................................... 23

Adjusting The Alarm Setpoints ............................................................................... 24

........................................................................................... 26

Field Options

Confidence Beep Enable ...................................................................................... 27

2 Gas to 4 Gas BW DEFENDER Upgrade ............................................................... 28

Troubleshooting Guide ...................................................................................... 29

Operating Specifications .................................................................................. 31

Accessories and Parts List

: BW DEFENDER Packing List ............................... 33

Calibration Record Chart ................................................................................... 34

Manufacturer’s Special Warnings ..................................................................... 35

Manufactured by: BW TECHNOLOGIES

Page 3

IMPORTANT

PLEASE READ THIS ENTIRE MANUAL AND FOLLOW THE INSTRUCTIONS AND

RECOMMENDATIONS CONTAINED HEREIN IN ORDER TO ENSURE PROPER

AND SAFE OPERATION AND FUNCTIONING OF THE BW DEFENDER MULTI-

GAS DETECTOR.

USE OF THE BW DEFENDER REQUIRES A FULL UNDERSTANDING OF THE

OPERATING AND MAINTENANCE INSTRUCTIONS. IT IS ONLY TO BE USED

FOR THE PURPOSES SPECIFIED IN THE MANUAL.

INTENDED USE: THE BW DEFENDER IS A MULTI-GAS PERSONAL DETECTOR

INTENDED FOR AMBIENT AIR MONITORING.

WARNING: Substitution of components may impair Intrinsic Safety.

AVERTISSEMENT: La substitution de composants peut compromettre la securite intrinseque.

CAUTION: Do not change or charge batteries in a hazardous location.

CAUTION: The LEL range of this monitor is factory calibrated to methane. If monitoring a different combustible gas, calibrate the combustible range of the monitor to the appropriate

CAUTION: FOR SAFETY REASONS THIS EQUIPMENT MUST BE OPERATED

AND SERVICED BY QUALIFIED PERSONNEL ONLY. READ AND

UNDERSTAND INSTRUCTION MANUAL COMPLETELY BEFORE OPERATING

AND SERVICING.

CAUTION: Extended exposure of the BW Defender to certain concentrations of combustible gases and air may stress a detector element, which can seriously affect its performance. If an alarm occurs due to high concentration of combustible gases, recalibration should be performed, or if needed the sensor replaced.

Prior to each day's usage sensitivity must be tested on a known concentration of the target combustible gas (methane, etc.) equivalent to 25-50% of full scale concentration (accuracy must be with 0 to +20% of actual). Accuracy may be corrected by recalibrating the instrument.

The BW DEFENDER and motorized sampling pump is Approved by:

CSA to U.S. and Canadian Standards - Class I, Div. 1, Groups A, B, C, D;

Class I, Zone 0, Gr. IIC. Cenelec Certified by LCIE – EEx ia d IIC. CE declared for

European conformity. ABS (American Standards Type Approval) to become part of a Classified Vessel. Certified for use in Australia - Ex ia s IIC for Zone 0 hazardous areas.

SAA

Limited Warranty & Limitation of Liability

BW Technologies warrants this product to be free from defects in material and workmanship under normal use and service for a period of two years, beginning on the date of shipment. Parts, product repairs and services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of a BW Technologies authorized reseller, and does not apply to fuses, disposable batteries or to any product which, in BW Technologies’ opinion, has been misused, altered, neglected or damaged by accident or abnormal conditions of operation or handling. BW

Technologies warrants that software will operate substantially in accordance with its functional specifications for 90 days and that it has been properly recorded on non-defective media. BW

Technologies does not warrant that software will be error free or operate without interruption.

BW Technologies authorized resellers shall extend this warranty on new and unused products to end-user customers only but have no authority to extend a greater or different warranty on behalf of BW Technologies. Warranty support is available if product is purchased through a

BW Technologies authorized sales outlet or Buyer has paid the applicable international price.

BW Technologies reserves the right to invoice Buyer for importation costs of repair/replacement parts when product purchased in one country is submitted for repair in another country.

BW Technologies’ warranty obligation is limited, at BW Technologies’ option, to refund of the purchase price, free of charge repair, or replacement of a defective product which is returned to a

BW Technologies authorized service center within the warranty period.

To obtain warranty service, contact your nearest BW Technologies authorized service center or send the product, with a description of the difficulty, postage and insurance prepaid (FOB

Destination), to the nearest BW Technologies authorized service center. BW Technologies assumes no risk for damage in transit. Following warranty repair, the product will be returned to

Buyer, transportation prepaid (FOB Destination). If BW Technologies determines that the failure was caused by misuse, alteration, accident or abnormal condition of operation or handling,

BW Technologies will provide an estimate of repair costs and obtain authorization before commencing the work. Following repair, the product will be returned to the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges (FOB Shipping

Point).

THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL

OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY

IMPLIED WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

BW TECHNOLOGIES SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR

CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER ARISING

FROM BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY

OTHER THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.

BW Technologies Ltd. BW Technologies (America) BW Technologies (Europe)

242, 3030 – 3 rd Ave. NE 2307 Oak Lane, Suite 2A100 101 Heyford Park,

Calgary, AB T2A 6T7 Grande Prairie, TX 75051 Upper Heyford, Oxfordshire OX25 5HA

Canada USA United Kingdom

Page 2

D1218/3 Nov/00 - Warranty (GAMax, addresses) - Feb 25, 2001 (warranty: unhyphenate, omit UK/EU address “ltd.”, UK postal code)

BW DEFENDER

MULTI-GAS DETECTOR

Operator’s Manual

Order Numbers: D4-2002

D2-2002

FOR SALES AND SERVICE CALL

1-800-663-4164 North America

+44 (0) 1869-233004 Europe

+1-403-248-9226 Other Countries

Fax: +1-403-273-3708 all countries

Email: [email protected]

Web Site: www.gasmonitors.com

BW Technologies BW Technologies (America) BW Technologies (Europe)

2840 - 2 Ave. SE 3279 West Pioneer Parway 101 Heyford Park

Calgary, AB T2A 7X9 Pantego, TX. 76013 Upper Heyford, Oxfordshire OX25 5HA

Canada USA United Kingdom

English D1218/3

Front Cover

Page 1

Back Cover

English D1218/3 - Nov 12/00 Cover Pages (New model #s on front cover; website, and Rev.3 on back cover) -and Feb 25, 2001 (std. Logos, UK postal code)

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