28
USER MENU
BUMP TEST
From the working display, press & hold the MENU BUTTON (B) until the
top line reads USER MENU. Press & release the SAVE/ZERO BUTTON
(C) to scroll until the bottom line reads BUMP TEST.
Prepare the appropriate certified gas mixture for your instrument model
(see proper gas mixtures listed in the Calibration section).
Apply the gas to the instrument and press & release the MENU BUTTON
(B) to start the BUMP TEST.
The display will show the gas value being tested on the top line with
registered gas value and a 45-60 second countdown on the bottom line.
The instrument will automatically check the LEL sensor and also the CO
and H2S sensors, if they are installed.
If each sensor tested reads at least 80% of the value of the gas, within
the time period required, the display will flash BUMP TEST PASS
before returning to the USER MENU automatically. Press & release the
POWER/MUTE BUTTON (A) to exit and return to the working display.
If any sensor fails, the display will show BUMP TEST FAILED. This
means that calibration is required. If calibration is unsuccessful, remove
the instrument from service. Consult the factory in the event of any
failure.
To exit this menu, press & release the POWER/MUTE BUTTON (A) to
return to the working display.
