Toshiba LF494 - Manual (Page 138)

TOSHIBA
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■ Cleaning the pipe wall inside of detector
(
1
) Cle:ming, sLeriliziilion and drying
According lo ihe rules of cleaning (included sterilization and drying) pipe line for sysiem
and the specifications described m chapter. 15, clean (included sterilize and dry) the pipe
wall inside of detector and the gaskets.
Gaskets arc the special one for J.F494. In case of installing new gaskets, see Tablel5.3
■*Type Specification Code Maintenance Parts’’ and order it to your nearest Toshiba
representative.
(2) Mainienance for usual and stable flow measurment
if the fluid to he measured contains slurry; a high concentration of electrically conductive
solids^ the slurry may accumulate as sticking on the pipe wall inside of detector.
The Slicking causes a reduction of flow measuring outputs when it is not cleaned inside
pipe of detector for a long time,
The flowmeter needs to make sure it remains around the wall inside pipe or not when the
following condition had happened.
[ 1 ]Thc flowmeter becomes a reduction of its output.
[
2
] i he flowmeter can not improve its output in spite of being calibrated*
'rhe flowmeter is required to remove along wnth clean it using a soft brush. It will be
come buck the usual and stable flow measurement after cleaning.
'I he pipe wall is never scratched when cleaning.
^Toshiba recommends to clean inside pipe periodically when this condition will be­
come easily.
*lt is belter Lo choose the suitable diameter which becomes more than 3 m7S as its
flow velocity to avoid this condition generally.
Notes: Before uninstalling the ilowmeier(deLector) from the pipe linc^ necessarily confirm
Ihe fluid of temperature and chemical property, and empty the fluid from detector.
Prepare the way to protect operator and system from bad influence; high temperature
fluid and chemical property
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