Black & Decker MULTI-GAS DETECTORS Operator`s manual

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: info@bwtnet.com
Web Site: www.gasmonitors.com
BW Technologies
2840 - 2 Ave. SE
Calgary, AB T2A 7X9
Canada
BW Technologies (America)
3279 West Pioneer Parway
Pantego, TX. 76013
USA
BW Technologies (Europe)
101 Heyford Park
Upper Heyford, Oxfordshire OX25 5HA
United Kingdom
English D1218/3
Back Cover
Front Cover
Page 1
IMPORTANT
Limited Warranty & Limitation of Liability
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 MULTIGAS DETECTOR.
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.
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
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.
242, 3030 – 3rd Ave. NE
Calgary, AB T2A 6T7
Canada
BW Technologies (America)
2307 Oak Lane, Suite 2A100
Grande Prairie, TX 75051
USA
Page 2
D1218/3 Nov/00 - Warranty (GAMax, addresses) - Feb 25, 2001 (warranty: unhyphenate, omit UK/EU address “ltd.”, UK postal code)
BW Technologies (Europe)
101 Heyford Park,
Upper Heyford, Oxfordshire OX25 5HA
United Kingdom
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.
2.
Calibrate the detector before first-time use, and then at least once every 90 days.
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) ............................................................................. 5
Wrist Strap ......................................................................................................... 6
BW DEFENDER Keypad ...................................................................................... 6
Display Icons ...................................................................................................... 7
Operation
Activating the Detector ......................................................................................... 8
Deactivating the Detector...................................................................................... 9
Backlight Display ................................................................................................. 9
Battery Test........................................................................................................ 10
Auto-Shutdown ................................................................................................... 10
Accumulated Exposure Levels (TWA and PEAK Exposure) ........................................ 11
Description of Alarm Setpoints ............................................................................... 12
Audible & Visual Gas Alarm Patterns ..................................................................... 13
Low Battery Alarm ............................................................................................... 14
Missing Sensor Alarm .......................................................................................... 14
Confined Space Entry ........................................................................................ 15
Motorized Sampling Pump: Features and Installation ................................................. 16
Operation and Low Flow Alarm ......................................... 17
Built-in Water Trap ......................................................... 18
Manual Aspirator Pump ........................................................................................ 19
Daily Operation ................................................................................................... 20
Maintenance
Auto Zero for all Sensors ...................................................................................... 21
Password Protection ............................................................................................ 21
BW DEFENDER Care .......................................................................................... 22
Calibration ......................................................................................................... 23
Adjusting The Alarm Setpoints ............................................................................... 24
Sensor Replacement ........................................................................................... 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
BW DEFENDER MULTI-GAS DETECTOR comes complete with:
•
•
•
•
•
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.
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
1
Calibrated By
34
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 FEATURES
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 H2S c/w filter
SR-X10 ................ O2 Sensor (2 year) c/w filter (compatible with: D4-2002; D2-2002 units only)
D4-RX06 .............. O2 Sensor (1 year) c/w filter (compatible with: D4-2000; D2-2000 units only)
D4-RW90 ............. Combustible Sensor
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
33
!
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.
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
SPECIFICATIONS
A
Low & High Alarm
Setpoints Display each
time the unit is turned
ON
B
Black & Decker
“VersaPak”
rechargeable battery
with locking switch
Dual Mode Sampling
Pump
SENSORS:
Combustible: Plug-in catalytic bead
Toxics and Oxygen: Plug-in 2 year electrochemical cells
D
“Sunbright” Flashing
Alarm LEDs
E
Audible Alarm
DISPLAY:
Alarm Setpoints:
Backlight:
Four (4) extra-large gas specific alpha-numeric LCDs
Displayed each time the unit is turned on
Pushbutton; Automatic in Alarm
F
One Button Operation
ALARMS:
Audible:
Visuals:
G
Keypad to set Alarm
Levels and Enter
Password
H
Stores TWA and Peak
functions
Description
4-gas Detector
4-gas Detector (motorized Sampling Pump installed)
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 Monitored
Oxygen
Explosive Gases
Carbon Monoxide
Hydrogen Sulfide
Gas Bar
Symbol
O2
EX
CO
H2S
Calibration:
Security:
Multi-Gas with advanced microcontroller based operation
Rechargeable NiCad battery: Operation -12 hrs. ; Charge time - 3 hrs.
-20 to +50°C (-4 to +122°F)
5 to 95 % RH non-condensing
Automatic when the BW DEFENDER is turned on
1. TWA (Time Weighted Average) Exposure
2. Peak Exposures
Automatic Zero and Span
Password protection for calibration and alarm setpoints
C
This manual covers the following BW DEFENDER instruments: Note: The models
listed below contain the new BW Defender 2 year oxygen sensor.
Order No.
D4-2002
D4-2002-SP
D2-2002
DETECTOR:
Power:
Temp. Range:
Humidity:
Self Test:
Records/Displays:
Unit of Measure
BW Defender
Version
% of ambient air
% of lower explosive limit (LEL)
Parts-per-million (ppm)
Parts-per-million (ppm)
4-gas
2-gas
4-gas
only
Enclosure:
90 dB @ 0.3 m (1 ft. ) variable pulsed beeper
1. Two (2) flashing “sunbright” LEDs
2. Gas specific LCD flashes in alarm
Two setpoints per sensor (user adjustable):
TOXICS: Low & High (TWA, STEL)
OXYGEN: Deficiency (High) & Enrichment (Low)
COMBUSTIBLES: Low & High
Multiple Gas Exposure; Sensor Removed; Calibration Air; Low Battery
11.9 x 10.3 x 2.9 cm (4.7 x 4.04 x 1.13 in.)
15.2 x 10.3 x 2.9 cm (6 x 4.04 x 1.13 in.)
375 g (13.27 oz.) including battery
424 g (14.85 oz.) including Pump & battery
Rugged, composite material, RFI/EMI shielded
SAMPLING PUMP:
Switch:
Active Mode:
Low Flow:
Flowrate:
Input Pressure:
Water Trap (built-in):
Current Draw:
Battery Life:
Powered by BW DEFENDER
Activates Active Sampling or Diffusion Mode operation
Fan ICON indicator
Activates Alarms (both Audible and Visual)
300-350 ml/min with 3 m (10 ft.) hose and filters (dependent on pump)
1.25 kPa
Hydrophobic Teflon replaceable filter
75 mA
Expected 8 hours (NiCad)
SAMPLE HOSES:
Length:
Tygon hose equipped with particulate filter and quick connect
Standard 3 m (10 ft.); maximum length 15 m (50 ft.)
Levels:
Other Alarms:
Size:
(with Pump)
Weight:
SAMPLE PROBES: 0.3, 0.9 or 1.8 m (1, 3 or 6 ft.) polycarbonate probes with handle and quick
connect
3
32
Page 6
Updated Nov, 2000 English D1218/3 Page 3 (models changed to D4-2002, D2-2002, to D4-2002-SP)
OPERATING SPECIFICATIONS
Oxygen
Primary Sensitivity:
Combustible
EX
%LEL
Measuring Range:
0-100%
GETTING STARTED
% O2
Carbon
Monoxide
CO ppm
Hydrogen
Sulfide
H2S ppm
0-25%
0-500 ppm
0-100 ppm
30 %
1500 ppm
500 ppm
1%
0.1%
1 ppm
0.5 ppm
≤6 (Note 1)
≤2
≤7
≤5
1%
0.1%
5 ppm
1 ppm
(% signal loss/year) Span:
Nominal
<5%
Nominal
<5%
Nominal
<5%
Nominal
<5%
Sensor Warranty:
2 Years
2 Years
2 Years
2 Years
Maximum Overload:
Detectable Accuracy:
Response @ T50:
Readout Increments:
Long Term Drift:
Zero:
Operating Humidity: 15 to 90%
Operating Pressure Range: Atmospheric ±10%
Note 1: Response typically less than 2 seconds @ T50
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.
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:
31
POWER
Batteries can be left in the VAC charger until required for use.
4
Page 7
Updated English D1218/3 Nov/00 P31. (O2 warranty changes to 2 years)
Nov/00 P4. (deleted D4-VP160 in three places)
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:
TROUBLESHOOTING
Problem
Possible Cause
Solution
Unit intermittently enters
alarm without apparent
reason.
Ambient gas levels are near
alarm point.
Puff of gas.
Alarms set incorrectly.
Weak battery.
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.
12-13 hours on rechargeable NiCad
(8-8.5 hours with motorized Pump)
WARNING: ONLY USE THE BLACK & DECKER VERSAPAK™ VP100 BATTERY
Missing and/or faulty sensor.
Pump unit is partially plugged.
INSERTING THE BATTERY
1. Unlock the tan battery lock ring by
sliding it fully left.
Unit does not read zero when
turned on.
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.
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”.
Sensor has not had time to
Wait 60 seconds for sensor to
stabilize.
stabilize.
Detector requires recalibration. Recalibrate unit. Quick
Calibration may be sufficient.
Ambient gas is present.
Detector is operating properly.
Use caution is suspect areas.
Sensor is missing.
Replace sensor.
Battery is almost dead.
Replace and/or recharge
battery.
Automatic Shutdown feature
has operated due to weak
battery.
Replace and/or recharge
battery.
Unit does not alarm when O2
sensor is removed.
Low (deficiency) alarm for O2
sensor - shut off by user.
Reset alarm point to correct
value.
Unit does not alarm when
explosive sensor is removed
from unit.
High alarm for LEL
sensor has been shut off.
Reset alarm point to correct
value.
Unit displays “SE” in both H2S
and CO displays; stays in
alarm.
Toxic sensor is missing from
the unit.
Replace toxic sensor or dummy
toxic sensor (D2-2002 only) in
2-gas BW DEFENDER.
Pump does not run when
attached to unit.
Pump is not turned on.
Push vents closed to turn on
pump.
Clear hoses.
Replace pump unit.
Change O2 sensor.
D4-2002 2 year O2 (#SR-X10)
D4-2000 1 year O2 (#SR-X10)
Unit will not auto zero or
calibrate.
O2 sensor reading is erratic.
5
Pump is plugged.
Pump is defective.
O2 sensor replacement may
not be compatible.
30
Page 8
Updated Nov, 2000 English D1218/3 Page 30 (changed to D2-2002; Added last row for oxygen
TROUBLESHOOTING
WRIST STRAP
This section lists some common errors and their solutions. If you are unable to solve
the problem, please contact BW Technologies for assistance.
Problem
Possible Cause
Solution
Unit will not turn ON.
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.
Install battery.
Replace and/or recharge battery.
Contact BW.
Contact BW for kit to upgrade to
the, 4-gas version (D4-2002).
Display doesn't show
CO or H2S
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.
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 does not
accurately measure
gas.
Unit does not display
maximum level of
oxygen detected.
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.
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.
Recalibrate unit.
Allow unit to acquire ambient
temperature before use.
Clean sensors.
Peak detection for oxygen:
displays the lowest value, not the
highest value detected.
Unit is operating normally.
29
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.
Replace sensor(s).
Replace sensor.
BW DEFENDER KEYPAD
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
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.
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.
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.
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 O2.
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.)
7
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 When battery is OK
When battery is low
Not Activated
Enabled
Battery alarm is Silent
Confidence Beep is Active
OPERATION
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
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.
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)
Battery alarm 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.
ACTIVATING THE DETECTOR
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.
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
8
Page 11
Updated Nov, 2000 English D1218/3 Page 27 (last sentence changed to page 21)
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.
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.
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.
1. Press and release the
Tab
TAB key.
# 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.
9
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.
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)
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).
Replaceable Sensor Screens
#M1785
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.
25
10
Page 13
ACCUMULATED EXPOSURE LEVELS
GENERAL: The 4-gas BW DEFENDER automatically calculates the TWA (TimeWeighted-Average). Exposure of H2S 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 Tab 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, H2S 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)
2ND: Next “PE” will appear on the displays followed by the Peak
Exposure readings in ppm, % or % LEL for each gas
monitored.
NOTE 2: For H2S, 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.
3RD: 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.
2. Use the Tab TAB key to advance to the next setpoint once the current one is
complete. Holding down the Tab TAB key will advance the unit through the alarm
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
ALARM SETPOINTS
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.
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.
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
(O2) - 20.9%.
NOTE: An alarm level can be disabled by setting that alarm setpoint to zero.
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.
3. To activate: Press and hold down both the
and Tab (ON and TAB) keys down
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
TABLE 2: Alarm Setpoints Parameters and Factory Default Setpoints
Alarm Levels (EX: Factory default setpoints
Gas Monitored
Symbol
Low
TWA
High
Oxygen
O2
Deficiency
Enrichment
Explosive Gases
EX
(10% LEL)
(20% LEL)
Carbon Monoxide
CO
(35 ppm)
(35 ppm)
(200 ppm)
Hydrogen Sulfide
H2S
(10 ppm)
(10 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 H2S 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
MAINTENANCE
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.
The rugged BW DEFENDER is designed to provide years of service with regular care
and minimal maintenance.
Table 3: Audible and Visual Alarms
EXTERIOR: Clean the BW DEFENDER exterior with a soft damp cloth. Do not use
solvents, soaps, or polishes on the detector.
Indicator
Low Alarm
High and TWA Level Alarm
ICON flashes
“ALARM
“HIGH ALARM”
Audible sounds at:
Tone-Pattern
1 Hz
2 Hz
Low to High - Low to High - faster
LEDs:
Both flash in sync with the affected Gas Readout.
LCD Gas Display:
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-WeightedAverage) 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.
1. Calibrate, test, and inspect the unit at regular intervals.
2. Keep an operations log of all events and occurrences.
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.
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
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.
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.
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 or “000” will appear and the audible will beep once.
One Beep (“000”) - Change or Remove the Existing Password:
3. Enter your current 3-digit password with the UP/DOWN Arrow keys. Press Tab
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.
Tab
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”.
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 H2S 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 O2
display.
21
14
Page 17
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.
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:
Oxygen:
Carbon Monoxide:
Hydrogen Sulfide:
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.
10 % LEL
19.5 % Vol.
35 ppm
10 ppm
BW DEFENDER alarm setpoints are field adjustable for special applications.
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.
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.
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.
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.
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.
LOW FLOW ALARM
Hydrophobic Filter Kit of 10 (Order #: M1864K)
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.
SAMPLING PROBES
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
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.
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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.
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.
LOW FLOW ALARM
Hydrophobic Filter Kit of 10 (Order #: M1864K)
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.
SAMPLING PROBES
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
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.
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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.
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.
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.
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
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.
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:
Oxygen:
Carbon Monoxide:
Hydrogen Sulfide:
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.
10 % LEL
19.5 % Vol.
35 ppm
10 ppm
BW DEFENDER alarm setpoints are field adjustable for special applications.
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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.
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.
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 or “000” will appear and the audible will beep once.
One Beep (“000”) - Change or Remove the Existing Password:
3. Enter your current 3-digit password with the UP/DOWN Arrow keys. Press Tab
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.
Tab
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”.
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 H2S 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 O2
display.
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Page 17
AUDIBLE / VISUAL ALARMS
MAINTENANCE
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.
The rugged BW DEFENDER is designed to provide years of service with regular care
and minimal maintenance.
Table 3: Audible and Visual Alarms
EXTERIOR: Clean the BW DEFENDER exterior with a soft damp cloth. Do not use
solvents, soaps, or polishes on the detector.
Indicator
Low Alarm
High and TWA Level Alarm
ICON flashes
“ALARM
“HIGH ALARM”
Audible sounds at:
Tone-Pattern
1 Hz
2 Hz
Low to High - Low to High - faster
LEDs:
Both flash in sync with the affected Gas Readout.
LCD Gas Display:
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-WeightedAverage) 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.
1. Calibrate, test, and inspect the unit at regular intervals.
2. Keep an operations log of all events and occurrences.
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.
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
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Page 16
CALIBRATION
ALARM SETPOINTS
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.
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.
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
(O2) - 20.9%.
NOTE: An alarm level can be disabled by setting that alarm setpoint to zero.
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.
3. To activate: Press and hold down both the
and Tab (ON and TAB) keys down
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
TABLE 2: Alarm Setpoints Parameters and Factory Default Setpoints
Alarm Levels (EX: Factory default setpoints
Gas Monitored
Symbol
Low
TWA
High
Oxygen
O2
Deficiency
Enrichment
Explosive Gases
EX
(10% LEL)
(20% LEL)
Carbon Monoxide
CO
(35 ppm)
(35 ppm)
(200 ppm)
Hydrogen Sulfide
H2S
(10 ppm)
(10 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 H2S 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.
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Page 15
ACCUMULATED EXPOSURE LEVELS
GENERAL: The 4-gas BW DEFENDER automatically calculates the TWA (TimeWeighted-Average). Exposure of H2S 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 Tab 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, H2S 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)
2ND: Next “PE” will appear on the displays followed by the Peak
Exposure readings in ppm, % or % LEL for each gas
monitored.
NOTE 2: For H2S, 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.
3RD: 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.
2. Use the Tab TAB key to advance to the next setpoint once the current one is
complete. Holding down the Tab TAB key will advance the unit through the alarm
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
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).
Replaceable Sensor Screens
#M1785
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.
25
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.
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.
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.
1. Press and release the
Tab
TAB key.
# 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.
9
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.
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 When battery is OK
When battery is low
Not Activated
Enabled
Battery alarm is Silent
Confidence Beep is Active
OPERATION
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
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.
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)
Battery alarm 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.
ACTIVATING THE DETECTOR
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.
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
8
Page 11
Updated Nov, 2000 English D1218/3 Page 27 (last sentence changed to page 21)
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.
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.
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.
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 O2.
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.)
7
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
WRIST STRAP
This section lists some common errors and their solutions. If you are unable to solve
the problem, please contact BW Technologies for assistance.
Problem
Possible Cause
Solution
Unit will not turn ON.
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.
Install battery.
Replace and/or recharge battery.
Contact BW.
Contact BW for kit to upgrade to
the, 4-gas version (D4-2002).
Display doesn't show
CO or H2S
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.
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 does not
accurately measure
gas.
Unit does not display
maximum level of
oxygen detected.
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.
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.
Recalibrate unit.
Allow unit to acquire ambient
temperature before use.
Clean sensors.
Peak detection for oxygen:
displays the lowest value, not the
highest value detected.
Unit is operating normally.
29
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.
Replace sensor(s).
Replace sensor.
BW DEFENDER KEYPAD
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
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:
TROUBLESHOOTING
Problem
Possible Cause
Solution
Unit intermittently enters
alarm without apparent
reason.
Ambient gas levels are near
alarm point.
Puff of gas.
Alarms set incorrectly.
Weak battery.
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.
12-13 hours on rechargeable NiCad
(8-8.5 hours with motorized Pump)
WARNING: ONLY USE THE BLACK & DECKER VERSAPAK™ VP100 BATTERY
Missing and/or faulty sensor.
Pump unit is partially plugged.
INSERTING THE BATTERY
1. Unlock the tan battery lock ring by
sliding it fully left.
Unit does not read zero when
turned on.
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.
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”.
Sensor has not had time to
Wait 60 seconds for sensor to
stabilize.
stabilize.
Detector requires recalibration. Recalibrate unit. Quick
Calibration may be sufficient.
Ambient gas is present.
Detector is operating properly.
Use caution is suspect areas.
Sensor is missing.
Replace sensor.
Battery is almost dead.
Replace and/or recharge
battery.
Automatic Shutdown feature
has operated due to weak
battery.
Replace and/or recharge
battery.
Unit does not alarm when O2
sensor is removed.
Low (deficiency) alarm for O2
sensor - shut off by user.
Reset alarm point to correct
value.
Unit does not alarm when
explosive sensor is removed
from unit.
High alarm for LEL
sensor has been shut off.
Reset alarm point to correct
value.
Unit displays “SE” in both H2S
and CO displays; stays in
alarm.
Toxic sensor is missing from
the unit.
Replace toxic sensor or dummy
toxic sensor (D2-2002 only) in
2-gas BW DEFENDER.
Pump does not run when
attached to unit.
Pump is not turned on.
Push vents closed to turn on
pump.
Clear hoses.
Replace pump unit.
Change O2 sensor.
D4-2002 2 year O2 (#SR-X10)
D4-2000 1 year O2 (#SR-X10)
Unit will not auto zero or
calibrate.
O2 sensor reading is erratic.
5
Pump is plugged.
Pump is defective.
O2 sensor replacement may
not be compatible.
30
Page 8
Updated Nov, 2000 English D1218/3 Page 30 (changed to D2-2002; Added last row for oxygen
OPERATING SPECIFICATIONS
Oxygen
Primary Sensitivity:
Combustible
EX
%LEL
Measuring Range:
0-100%
GETTING STARTED
% O2
Carbon
Monoxide
CO ppm
Hydrogen
Sulfide
H2S ppm
0-25%
0-500 ppm
0-100 ppm
30 %
1500 ppm
500 ppm
1%
0.1%
1 ppm
0.5 ppm
≤6 (Note 1)
≤2
≤7
≤5
1%
0.1%
5 ppm
1 ppm
(% signal loss/year) Span:
Nominal
<5%
Nominal
<5%
Nominal
<5%
Nominal
<5%
Sensor Warranty:
2 Years
2 Years
2 Years
2 Years
Maximum Overload:
Detectable Accuracy:
Response @ T50:
Readout Increments:
Long Term Drift:
Zero:
Operating Humidity: 15 to 90%
Operating Pressure Range: Atmospheric ±10%
Note 1: Response typically less than 2 seconds @ T50
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.
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:
31
POWER
Batteries can be left in the VAC charger until required for use.
4
Page 7
Updated English D1218/3 Nov/00 P31. (O2 warranty changes to 2 years)
Nov/00 P4. (deleted D4-VP160 in three places)
Fig.1: BW DEFENDER FEATURE DRAWING
SPECIFICATIONS
A
Low & High Alarm
Setpoints Display each
time the unit is turned
ON
B
Black & Decker
“VersaPak”
rechargeable battery
with locking switch
Dual Mode Sampling
Pump
SENSORS:
Combustible: Plug-in catalytic bead
Toxics and Oxygen: Plug-in 2 year electrochemical cells
D
“Sunbright” Flashing
Alarm LEDs
E
Audible Alarm
DISPLAY:
Alarm Setpoints:
Backlight:
Four (4) extra-large gas specific alpha-numeric LCDs
Displayed each time the unit is turned on
Pushbutton; Automatic in Alarm
F
One Button Operation
ALARMS:
Audible:
Visuals:
G
Keypad to set Alarm
Levels and Enter
Password
H
Stores TWA and Peak
functions
Description
4-gas Detector
4-gas Detector (motorized Sampling Pump installed)
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 Monitored
Oxygen
Explosive Gases
Carbon Monoxide
Hydrogen Sulfide
Gas Bar
Symbol
O2
EX
CO
H2S
Calibration:
Security:
Multi-Gas with advanced microcontroller based operation
Rechargeable NiCad battery: Operation -12 hrs. ; Charge time - 3 hrs.
-20 to +50°C (-4 to +122°F)
5 to 95 % RH non-condensing
Automatic when the BW DEFENDER is turned on
1. TWA (Time Weighted Average) Exposure
2. Peak Exposures
Automatic Zero and Span
Password protection for calibration and alarm setpoints
C
This manual covers the following BW DEFENDER instruments: Note: The models
listed below contain the new BW Defender 2 year oxygen sensor.
Order No.
D4-2002
D4-2002-SP
D2-2002
DETECTOR:
Power:
Temp. Range:
Humidity:
Self Test:
Records/Displays:
Unit of Measure
BW Defender
Version
% of ambient air
% of lower explosive limit (LEL)
Parts-per-million (ppm)
Parts-per-million (ppm)
4-gas
2-gas
4-gas
only
Enclosure:
90 dB @ 0.3 m (1 ft. ) variable pulsed beeper
1. Two (2) flashing “sunbright” LEDs
2. Gas specific LCD flashes in alarm
Two setpoints per sensor (user adjustable):
TOXICS: Low & High (TWA, STEL)
OXYGEN: Deficiency (High) & Enrichment (Low)
COMBUSTIBLES: Low & High
Multiple Gas Exposure; Sensor Removed; Calibration Air; Low Battery
11.9 x 10.3 x 2.9 cm (4.7 x 4.04 x 1.13 in.)
15.2 x 10.3 x 2.9 cm (6 x 4.04 x 1.13 in.)
375 g (13.27 oz.) including battery
424 g (14.85 oz.) including Pump & battery
Rugged, composite material, RFI/EMI shielded
SAMPLING PUMP:
Switch:
Active Mode:
Low Flow:
Flowrate:
Input Pressure:
Water Trap (built-in):
Current Draw:
Battery Life:
Powered by BW DEFENDER
Activates Active Sampling or Diffusion Mode operation
Fan ICON indicator
Activates Alarms (both Audible and Visual)
300-350 ml/min with 3 m (10 ft.) hose and filters (dependent on pump)
1.25 kPa
Hydrophobic Teflon replaceable filter
75 mA
Expected 8 hours (NiCad)
SAMPLE HOSES:
Length:
Tygon hose equipped with particulate filter and quick connect
Standard 3 m (10 ft.); maximum length 15 m (50 ft.)
Levels:
Other Alarms:
Size:
(with Pump)
Weight:
SAMPLE PROBES: 0.3, 0.9 or 1.8 m (1, 3 or 6 ft.) polycarbonate probes with handle and quick
connect
3
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 FEATURES
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 H2S c/w filter
SR-X10 ................ O2 Sensor (2 year) c/w filter (compatible with: D4-2002; D2-2002 units only)
D4-RX06 .............. O2 Sensor (1 year) c/w filter (compatible with: D4-2000; D2-2000 units only)
D4-RW90 ............. Combustible Sensor
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
33
!
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.
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
BW DEFENDER MULTI-GAS DETECTOR comes complete with:
•
•
•
•
•
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.
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
1
Calibrated By
34
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.
2.
Calibrate the detector before first-time use, and then at least once every 90 days.
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) ............................................................................. 5
Wrist Strap ......................................................................................................... 6
BW DEFENDER Keypad ...................................................................................... 6
Display Icons ...................................................................................................... 7
Operation
Activating the Detector ......................................................................................... 8
Deactivating the Detector...................................................................................... 9
Backlight Display ................................................................................................. 9
Battery Test........................................................................................................ 10
Auto-Shutdown ................................................................................................... 10
Accumulated Exposure Levels (TWA and PEAK Exposure) ........................................ 11
Description of Alarm Setpoints ............................................................................... 12
Audible & Visual Gas Alarm Patterns ..................................................................... 13
Low Battery Alarm ............................................................................................... 14
Missing Sensor Alarm .......................................................................................... 14
Confined Space Entry ........................................................................................ 15
Motorized Sampling Pump: Features and Installation ................................................. 16
Operation and Low Flow Alarm ......................................... 17
Built-in Water Trap ......................................................... 18
Manual Aspirator Pump ........................................................................................ 19
Daily Operation ................................................................................................... 20
Maintenance
Auto Zero for all Sensors ...................................................................................... 21
Password Protection ............................................................................................ 21
BW DEFENDER Care .......................................................................................... 22
Calibration ......................................................................................................... 23
Adjusting The Alarm Setpoints ............................................................................... 24
Sensor Replacement ........................................................................................... 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
Limited Warranty & Limitation of Liability
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 MULTIGAS DETECTOR.
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.
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
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.
242, 3030 – 3rd Ave. NE
Calgary, AB T2A 6T7
Canada
BW Technologies (America)
2307 Oak Lane, Suite 2A100
Grande Prairie, TX 75051
USA
Page 2
D1218/3 Nov/00 - Warranty (GAMax, addresses) - Feb 25, 2001 (warranty: unhyphenate, omit UK/EU address “ltd.”, UK postal code)
BW Technologies (Europe)
101 Heyford Park,
Upper Heyford, Oxfordshire OX25 5HA
United Kingdom
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: info@bwtnet.com
Web Site: www.gasmonitors.com
BW Technologies
2840 - 2 Ave. SE
Calgary, AB T2A 7X9
Canada
BW Technologies (America)
3279 West Pioneer Parway
Pantego, TX. 76013
USA
BW Technologies (Europe)
101 Heyford Park
Upper Heyford, Oxfordshire OX25 5HA
United Kingdom
English D1218/3
Back Cover
Front Cover
Page 1
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)