YOKOGAWA FC400G User Manual

< 6. Operation >
6-4
IM 12F5A1-01E
6.1.6 CheckingElectrodeMechanismBlock
Check as follows that the electrode rotates normally. Put the electrode in the maintenance position
(Figure6.3)orliftthecover,andcheckthefollowing:
• Thereshouldbeonlyaslightsoundfromthebeltoraxleswhentheelectroderotates.
There should not be any sound like items making contact or vibrating.
• There should be no unevenness or vibration.
• The drive belt should not be visibly loose, resulting in a loss of traction.
Replace the electrode mechanism blockinthemeasuringtankafterconrmingthatthereareno
problems.
After replacing the electrode mechanism block in the tank, attach the cover. Stop the rotation of the
electrode. Switch the converter to <CELL> mode (display CELL. ON and press
NO
key to stop cell
motor and thus electrode rotation.
Mountelectrodemechanismblockonmeasuringtank,andtightenxingscrewssu󰀩ciently.Then
press
YES
in CELL mode to start electrode rotation. When the indicator electrode is rotating
(cell motor power is supplied from converter) then “CELL” is displayed on CONTACTS
display of converter panel.
6.1.7 FillingZeroWater,andTestOperation
Forautozerocalibrationtoproceedsmoothly,youneedtoowzerowater(chlorine-freewater)
throughthezeroltercasebeforestarting,thenattachzerolterandoperatewithoutturningonauto
calibration.
Afterreplacingthelter,orwhenthenormalcalibrationintervalhasbeenexceeded,youneedstorun
theinstrumentino󰀪inemodeforawhiletoallowconditionstostabilizebeforeturningontheAuto
ZeroCalibrationfunctions.
• Close BV2 and open BV3 ball valve.
• BecarefulthatwaterdoesnotleakfromactivatedcharcoallterF1orpiping,andthatthereare
no bubbles is pipeline.
• After20min.operationlikethis,conrmthatresidualchlorinereadingisnearzero. 
Set auto zero interval, warm up time, and settling time according to the environment.
• Close BV3 and BV2 ball valve.
6.1.8 SettingOperationParameters
When the FC400G Free Available Chlorine Analyzer arrives at your site, it will operate based on the
initial data set at the time of shipment.
Settheappropriateparameterstosuityouroperationconditions.RefertoSec.6.3forthetypesand
operations of setting parameters. Key operations for displaying the setting mode items and setting
data are described in Chapter 5.
6.1.9 Calibration
Operate the FC400G for at least one hour under normal operating conditions before calibrating.
(Note) The electrode characteristics are not stable immediately after cleaning the electrode, this is the reason for leaving the instrument
running for a while before calibrating it.
Refer to Chapter 7 for calibration requirements.

YOKOGAWA FC400G Specifications

General

Brand	YOKOGAWA
Model	FC400G
Category	Measuring Instruments
Language	English