BW Technologies GasAlertMicro 1, Руководство пользователя

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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.
Table 12 and Figure 5 illustrate how to replace a sensor or
sensor filter. If the detector is on, turn it off. Remove the
battery tray (see Figure 4). Remove the machine screw and
alligator clip. Remove the (two) thread cutting screws on the
rear shell and remove the shell. Remove the (four) thread
cutting screws on the PCB assembly and extract the PCB.
Replace the sensor filter or replace the sensor(s).
Gently rocking the sensor back and forth may help free a
tightly held sensor. Insert a new sensor on the PCB, ensuring
that sensor posts are aligned correctly.
Note: Detectors that are configured for 1, 2 or 3 gases may
contain a dummy sensor in one of the three sensor locations.
Re-assemble the detector.
Calibrate the detector after changing any sensor(s). See the
section “
Calibration and Setting Alarm Setpoints ”.
Table 12. Replacing a Sensor or Sensor Filter
Item Description
A
Front shell
B Triple sensor filter
C Oxygen Sensor (sensor 3)
D
LEL Sensor (sensor 2)
E
CO/H
2
S Sensor (sensor 1)
F
Sensor locator
G
PCB assembly
H
Rear shell
I Alligator clip
J Machine screw
K
Thread cutting screws
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