API Audio Accessories 7-22-10 Instruction Manual download pdf (Page 15)

(continued on page 27)

MENU continued from page 25

From the working display, press & release TICK/MENU BUT-

TON (B) once, SELECT TEST will appear on the top line of the

display. Press & release the SAVE/ZERO BUTTON (C) until CF

is displayed. Press & release the TICK/MENU BUTTON (B)

again and the instrument will auto-zero and then enter the CF

test menu. Press & release the TICK/MENU BUTTON (B) once

more to start the test.

NOTE: Using the SAVE/ZERO BUTTON (C) may advance you

to another test option depending on the instrument version.

A 180 second timed test will begin. (The time for this test is

factory adjustable.) A countdown timer will show the remaining

seconds of the test. The peak CF reading will start to flash “O

PK” in the lower right. 20 seconds after the oxygen level drops

below 18% indicating the presence of flue gas the PK reading

will no longer flash. A continuous CO reading is displayed in the

upper left and the sustained CF reading is in the upper right.

It will continue to flash until 20 seconds after the oxygen level

drops below 18.9%. At this point, conditions are acceptable for

a valid test calculation.

If this segment continues to flash during the test period,

conditions for a proper test were not possible. In this case

any test results are invalid. The display and printout will

show N/A for the peak CF reading. The test should be re-

peated.

MENU continued from page 26

If the proper condition for an accurate test existed, the detected

CO level, calculated CF level and the peak CF level will remain

on the display at the end of the test.

The CF readings are automatically recorded by the instrument

and can be viewed at a later date. In addition, the peak CF

reading will be stored for a printout report.

Press & release the TICK/MENU BUTTON (B) to repeat the

test. Press & release the POWER/MUTE BUTTON (A) to return

to the working display.

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API Audio Accessories 7-22-10 Instruction Manual Page 15