GasAlertMicro

GasAlertMicro

Users Manual

Maintenance

To keep the detector in good operating condition, perform the following basic maintenance as required:

• Calibrate, test and inspect the detector at regular intervals.

• Keep an Operations Log of all maintenance, calibrations and alarm events.

• Clean the exterior with a soft damp cloth. Do not use solvents, soaps or polishes.

• Do not immerse the detector in liquids.

Replacing the Batteries

a

Warning

To avoid personal injury:

⇒ Replace the batteries as soon as the detector emits

a Low Battery Alarm.

⇒ Use only batteries recommended by

BW Technologies to prevent damage or personal injury.

⇒ Use only approved AA alkaline or charged AA NiMH

batteries, properly installed in the detector case.

See page 49 for approved batteries.

⇒ Charge batteries using only a recommended

charger. Do not use any other charger. Failure to observe this precaution could lead to fire or explosion.

⇒ Do not change or charge batteries in a hazardous

location. Doing so will impair the intrinsic safety of the unit, and may lead to fire or explosion.

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Table 11 and Figure 4 illustrate how to replace the batteries.

If the detector is on, turn off the detector before replacing the batteries. Press the two release buttons on the detector. The battery tray pulls out and snaps in.

Remove the batteries from the battery drawer and replace according to the polarity markings. Close drawer until you hear both sides click, which locks the battery drawer in place.

Table 11. Replacing the Batteries

Item Description

A

B

C

Detector Front

Release Buttons

Batteries

To preserve battery life, turn off the detector when you are not using it.

GasAlertMicro

Maintenance

Figure 4. Replacing the Batteries

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GasAlertMicro

Users Manual

Replacing a Sensor or Sensor Filter

a

Warning

To avoid personal injury, use only sensors specifically designed for the detector. See the section

“Replacement Parts and Accessories.”

Each sensor has a high degree of resistance to common vapors and gases. A sensor will most likely clear itself if you remove the detector to a clean environment and wait 10 to

30 minutes. Do not expose a sensor to the vapors of inorganic solvents (such as paint fumes) or organic solvents.

The section “If the Detector Does Not Work” describes problems caused by a sensor in need of calibration or replacement.

Gently rocking the sensor back and forth may help free a tightly held sensor. Insert new sensor on the PCB, ensuring that sensor posts are aligned correctly. Two-gas units require a dummy sensor.

Calibrate the detector after changing any sensor.

Table 12. Replacing a Sensor or Sensor Filter

Item Description

A

B

C

Detector Screws

Sensors

Sensor Filter

Figure 5. Replacing a Sensor or Sensor Filter

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