Bosch ETT 008.31, Repair Instructions

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29
Fine-tuning
Set function switch S 60 to position "1" .
Call the air-pressure gauge function with the "Select" button, "
bo An bo An bo An bo An bo An
" is displayed. Press "Select" and Taste "Enter
o
" at the same
time: "
bo.Ei bo.Ei bo.Ei bo.Ei bo.Ei
" (einstellen, set) appears.
Press "Select" Display Meaning/function
4 x Read the current air pressure on a barometer and note down
in hPa (mbar).
Simultaneously pressing The momentary air pressure also exercises an influence on
"Enter
o
" calls the setting the air-pressure gauge of the analyzer via the zero-gas inlet.
function "
Ei Ei Ei Ei Ei
" With the "Enter
o
" or "Test
u
" buttons, adjust the value
shown in the HC display field to the noted value on the
barometer display. Enter the value in hPa (mbar).
After this, do not press any buttons; wait.
After two seconds, "
End End
End End
End
" appears, indicating that the device
has provisionally accepted the value.
Compare the displayed value with the noted barometer
display once more.
Correction required:
Press "Enter
o
" or "Test
u
" , but wait at least 1 second for
the device to react.
Correction required:
Acknowledge your entry by
simultaneously pressing
"Enter
o
" und "Test
u
".
The first reference point is now fine-tuned. The analyzer
switches over to fine-tuning of the second reference point.
The analyzer prompts you to fine-tune the second reference
point.
Fine-tuning appears on the display ”
dELt
” (delta) as a diffe-
rential pressure.
The pressure introduced must remain stable throughout the
fine-tuning process!
100 cm water gauge in the CO display field is recommen-
ded.
The differential pressure to be introduced at the zero-gas
inlet may be either positive or negative.
With the "Enter
o
" or "Test
u
" buttons, alter the value in the
CO display window until it matches the produced differential
pressure.
!
Take care to enter the correct plus or minus sign!
If the second reference point is fine-tuned as absolute
pressure, you must call up the "
Ab5o
" fine-tuning function.
Here, increase the value shown in the CO display field above
the maximum possible value (200 cm w.g.) by pressing
"Enter
o
".
980
LuFt bo.Ei
984
End bo.Ei
984 1000
dELt bo.Ei
984 980
dELt bo.Ei