43
Consumable Replacement
(3)
Remove the sensor spacer. Pinch the head of the oxygen sensor and slowly lift
and remove it from the detector. (There is no need to remove the combustible
gas sensor.)
(4)
Install a new sensor in the same location
where the old one was installed. Reinstall the
sensor spacer.
(5)
Install the back cover by tightening the four
screws. (Recommended torque: 30 cN
⋅
m)
(6)
Attach the elastomer case and shoulder strap
to the gas detector. Connect the gas sampling
tube (or attachment) to the gas detector.
(7)
Turn on the gas detector. Check that the display changes from the warm-up screen
to the gas concentrations screen. If “Sensor Error” is displayed, the sensor may
not be installed correctly. Check the sensor for correct installation.
(8)
Block the tip of gas sampling tube (or attachment) and check that no pump motor
sound is heard and that “Pump Error” is displayed. If “Pump Error” is not displayed,
the sensor spacer’s gaskets may be missing or the screws may be loose. Open
the back cover and recheck.
If “Pump Error” is not displayed even after blocking and checking repeatedly, the
gaskets may be worn or the pump may be broken. Contact New Cosmos or your
New Cosmos representative for repair.
Combustible gas
sensor
Oxygen sensor
Sensor spacer
with 2 gaskets
Firmly tighten the four screws with recommended torque.
Loose screws may cause water entry into the detector.
Ensure that the pump motor harness is not entangled in the
back cover while installing the cover. Failure to do so may
impair the explosion-proof performance and gas detection.
Normal gas detection is not possible if the gaskets are missing
or installed incorrectly.
CAUTION
Screw
(4 places)
