Fellow Kogyo FOCAS-2000 Instruction Manual page 23

Maintenance and Checking
8
.
Zero-point check MeasureWater press Enter
8-1-3.
If "Warning: cell too dirty" is displayed, this zero-point check function (by using water fed through the fresh water inlet) is used to check whether
the fresh water is contaminated.
Zero-point check procedure by feeding water through a fresh water line on a ship
With this, the zero-point check by feeding water from the fresh water line on the ship is completed.
This function simply checks the oil concentration of water supplied from the fresh water inlet.
Execute manual washing to cleaning the sensor before starting this check function (Zero-point check by feeding water
from the fresh water inlet).
Do not feed industrial water or circulating reclaimed water to the fresh water inlet. When the fresh water is cloudy or
contaminated, the oil concentration may not be measured correctly when the sensor is cleaned with the contaminated
water.
To check whether the measurement is influenced by the water supplied from the fresh water inlet, the zero-point check
function (using mineral water) is used after sensor cleaning.
Keep on pressing "Esc" for two seconds or longer.
Press " " twice.
Press "Enter" and then press " " twice.
Press "Enter." The zero-point check starts.
Open the fresh water valve to feed water to the fresh water line.
A time to flow water is displayed on the lower right part of the screen.
Shows a waiting time before the water fed into the fresh water line becomes stable.
A remaining time is displayed on the lower right part of the screen.
The oil concentration detector measures the concentration of oil in water fed from the fresh water
inlet. (You can terminate the measurement anywhere. However, if you do not press the "Esc"
switch for about 10 minutes, the oil concentration detector stops measurement.)
Keep on pressing "Esc" for two seconds or longer to end measurement.
Press "Esc."
"Main Menu" is displayed back.
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