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7. Set the main unit power switch to the ON position.
8. All the LEDs on the front and the LCD turn on for one second, then the gas detector starts
self-test.
When this product is used for the first time or a different gas type/setting of sensor unit is
installed (e.g. target gas or full scale value is different), the TROUBLE LED will flash, SENS.
will appear and
“Err” will be shown on the sub-display. Open the front cover and press the
COMM. button for more than one second to clear the error.
When the same type/setting of sensor unit is installed (e.g. target gas and full scale value are
the same as the previous one), go to step 9.
9.
“Good” is shown on the sub-display. The unit will begin a 30-second initialization mode
(POWER LED flashes), then start normal operation mode (POWER LED is steady lit) with the
gas concentration displayed on the LCD.
To ON position
Lift the cover flap open.
Main unit power switch
TROUBLE LED flashing
COMM. button
Green POWER LED
30 sec flashing
steady lit
