Black & Decker MULTI-GAS DETECTORS Operator's Manual download pdf (Page 12)

Page 12

SENSOR REPLACEMENT

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

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

Replace dirty or plugged sensors immediately. Failure to do so may compromise the

unit's effectiveness as a safety instrument.

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

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

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

Twin Toxic Sensor (Turquoise band) - Middle Sensor

Combustible Sensor (Silver sensor) - Right hand side

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

before installation.

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

Remove the top endcap and the replaceable sensor screens.

2. Using a pair of needlenose pliers or similar tool, grasp the desired sensor firmly

and pull straight out. Rocking the sensor back and forth gently may help free

tightly held sensors. Do not use excessive force or sensors may be crushed.

3. Line up and insert the replacement sensor. It fits one way only. Push firmly into

the mating sockets. Do not force into place. When fully seated, all sensors will be

approximately the same height.

4. Replace the endcap and sensor screens with the 4 screws. Tighten the screws

only slightly more than finger tight.

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

“CALIBRATION”.)

UPGRADING: 2-gas BW DEFENDERs may be upgraded to a 4-gas BW DEFENDER

in the field with the D4-UPGRADE1 Kit.

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

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

DEACTIVATING THE DETECTOR

GENERAL: The BW DEFENDER “OFF” function is designed to prevent accidental

shut off, and will warn you that the BW DEFENDER is being shut down.

1. To deactivate, press the (ON/OFF) key

firmly and hold it down until the word “OFF”

appears on the screen (approximately

4 seconds).

OFF WARNING: Prior to the “OFF” readout

the detector will emit 4 beeps and flash the

alarm LEDs as a warning that the unit will

be shutting down. Shut down will occur

after the word “OFF” displays.

NOTE: If the button is released before

4 seconds have elapsed, the unit will not

shut off. If this happens accidentally: Press

the key again for 4 seconds.

BACKLIGHT DISPLAY

Access the BW DEFENDER LCD backlight

feature to view the display in poor light.

The backlight will remain lit for about

5 seconds, and then automatically shut off.

1. Press and release the 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.

Tab

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)

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Black & Decker MULTI-GAS DETECTORS Operator's Manual Page 12

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