5
2-1.
Start-up method
Before start-up FI-800, confirm that the correct pipings and wiring works are performed.
(Refer to the separate manual 「Installation work manual」 for details.)
(1) Confirm that the power is not supplied to the unit
and remove 10 hexagonal socket headed bolts
and lid. Turn ON the power switch inside the unit.
In this case, the ＬＥＤ and ＬＣＤ do not go ON
because the power is not supplied to the unit.
(2) Install the lid and 10 hexagonal socket headed bolts.
Tighten these bolts firmly and supply power to the unit.
(3) With power ON to the unit, the “PW/TR” LED light goes ON and selfdiagnostic function
starts.
(4) After the unit becomes measurement mode without abnormality in the course of selfdiagnosis,
adjust the sample flow rate.
(5) Connect pipes for sample gas to GAS IN and reference gas to REF IN respectively.
When 3-way cock etc. is installed separately, change the cock position to supply the gas.
(See 「Installation work manual」 for piping method using 3-way cock).
(6) Adjust sample flow rates of sample gas and reference gas to 300ml±25ml/min respectively
with flowmeter installed outside.
(7) Change the position of 3-way cock etc. to supply reference gas to both GAS IN and REF IN.
(8) Sample flow rate of reference gas to GAS IN shall be adjusted to the same flow rate as to
supply the sample gas.
(9) After reading gets stable (approx. 60 sec.), press REF CAL switch for about 5 seconds to
make reference gas calibration.
(10)After completion of reference gas calibration, return the cock position to supply sample gas
to the GAS IN.
After completion of steps (1) to (10), continuous measurement is started..
２. Operation method
Power switch
When removing the front lid while the power is supplied, stop to supply measuring
gas and confirm that there is no combustible gases around the unit beforehand.
！
WARNING
