Operating Procedures; Starting Operation; Stopping Operation - YOKOGAWA vigilantplant OX102 User Manual

3. Operating Procedures

3.1 Starting operation

3.2 Stopping operation

IM 11M10A01-03E
Before starting the operation of the sampling unit, make sure to power down the OX100
Series oxygen analyzers. Take the following steps to start operating the unit.
(1) Mount an OX100 Series sensor to the sensor connector of the sampling unit by
inserting 70 to 80 mm of the sensor and tightening the locknut firmly with fingers.
The locknut should be finger tight only and do not use a wrench for tightening.
(2) Completely open both stop valves, sampling gas intake and gas vent.
(3) Turn off the power switch of the unit and apply the voltage conforming to the
specification.
(4) Open the flow regulating valve of the flowmeter and the needle valve on the front
completely by turning the valves counterclockwise completely.
(5) Turn on the power switch of the unit. The suction pump starts working.
(6) If the flowmeter reads below 0.5 l/min, close the needle valve on the front gradually
by turning it clockwise until the flowmeter reads 0.5 l/min. If the flowmeter reads
over 0.5 l/min, close the flow regulating vale of the flowmeter gradually by turning it
clockwise until the flowmeter reads 0.5 l/min.
(7) Turn on the power of the OX100 Series oxygen analyzers.
Take the following steps to stop operating the unit.
(1) Remove power from the OX100 Series oxygen analyzers.
(2) Turn off the power switch of the sampling unit.
(3) Close both stop valves for sampling gas intake and for gas vent completely by
turning the valves clockwise completely.
Appendix
A-3