Sanyo MCO-18AIC Service Manual page 20

F09: Display the temperature in CO
<Direction for Input "F09" on temperature display and press ENT key to show the
use> temperature in CO
automatically returns to PV display.
In SV is +45 C, CO
SV 2.0 C.
Once the temperature retrieves in SV 2.0 C, Auto Zero is forcibly executed
since the apparatus falls into the condition that the main power is supplied.
When CO
2.0 C, or it may be within 60minutes after the main power is supplied, or
Auto Zero may be being executed.
F10: Display a coefficient of adjustment value for CO
<Direction for Input "F10" on temperature display and press ENT key to display a coefficient
use> of adjustment value for CO
or leave the device for 90seconds, automatically returns to PV display.
<Description> The condition is that CO
internal CO
voltage should be approx. 4.0V when ambient air is got properly by the pump.
At that time the value should be approx. "500".
If CO
2
since CO
<Calculation> (CO sensor output voltage during Auto Zero pump performs / 4.0V) x 5000
2
Note)
Only bigger three digits are displayed. e.g "5000"
F11: Display a coefficient of adjustment value for CO
<Direction for Input "F11" on temperature display and press ENT key to display an
use> adjustment value for CO
leave the device for 90seconds, automatically returns to PV display.
<Description> The value is adjusted when CO
SV 4.5% when the CO
4.5%. At that time the value in F11 should be lower than "500", ex "460". If the
value is abnormal, ex "999", the actual internal level can be 1.0%, however
the CO
F12: Display a temperature in ambient temperature sensor
<Direction for Input "F12" on temperature display and press ENT key to display a
use> temperature of ambient temperature sensor on CO
key or leave the device for 90seconds, automatically returns to PV display.
Note) This temperature is not synchronized with actual ambient temperature since it
is affected by waste heat in electrical parts. (indicated approx. 4 C higher than
the actual temperature)
F13: Initialize the non-volatile memory (initial: 000)
This function should be used only when data in the non-volatile memory
cannot be restored owing to unexpected events (ex: noise).
Do not use in normal condition.
<Direction for Input "F13" on temperature display and press ENT key to display "000" on
use> CO display, then change the 1
2
the data in non-volatile memory.
sensor box. If you press ENT key or leave for 90seconds,
2
valve turns OFF when the temperature is out of
2
is not injected, the temperature in sensor box may be out of
2
zero point on CO
2
sensor voltage should be adjusted in 4.0V when
2
level is 0%. Perform Auto Zero and ensure the sensor output
2
in the ambient air is several %, the value would be lower than "500"
sensor output voltage is lower than 4.0V.
2
zero point on CO
2
level is displayed as 5.0%, however the actual level is
2
is displayed as 5.0%.
2
17
sensor box
2
zero point (initial: 500)
2
display. If you press ENT key
2
displayed as "500"
span point (initial: 500)
2
display. If you press ENT key or
2
is calibrated. For example, calibrate CO
2
2
st
digit to "1" and press ENT key to initialize all
with
2
display. If you press ENT