Fellow Kogyo FOCAS-2000 Instruction Manual page 36

Page. 35
Troubleshooting
9
.
In the case "Warning" or "Error" is displayed on the LCD display screen
● To assure the performance, the oil concentration detector (FOCAS-2000) is so designed to stop running when detecting a warning or error
state. In such a state, the AL1 and AL2 alarm lamp blink with a warning or error code on the LCD display screen.
● Press the RESET switch or turn off and on power to the oil concentration detector when the warning or error state cannot be canceled, and
when an unknown symptom (excluding the LCD displays listed below) is displayed, and when the "Enter" switch is disabled to temporarily
cancel the warning state.
Symptom (LCD display)
● When the oil concentration detector cannot be recovered by the above operations, call your local Fellow Kogyo distributor or Sales Division of
Fellow Kogyo.
Possible cause
● The insulating sheet is still on the
battery.
● Power has not been supplied to the oil
concentration detector for a long time
and the clock backup battery has been
exhausted.
● The clock is not right.
● No operational log memory card
● If the memory card which was used
in a certain FOCAS-2000 is inserted
in another FOCAS-2000 unit, density
measurement cannot be performed.
● Outside the measurement range of the
sensor unit
● Failure of the light source system in the
sensor of the sensor unit
● Light in the sensor is blocked due to
stains in the supplied sample water.
● Condensation or water leak in the
sensor unit.
● The ambient temperature is outside the
operating temperature of the sensor
unit.
● The detection tube in the sensor unit is
empty.
● Contaminants
● The detection tube in the sensor unit is
contaminated.
Action / measures
● Remove the insulating sheet from the battery holder
and set the clock right.
● Replace the clock backup battery by a new one and set
the clock right.
● Set the clock right.
See "4-3 Preparing for Operation --- 6.2 Time correction
of the clock."
● Turn off power to the oil concentration detector, mount
the operational log memory card, and turn on power to
the oil concentration detector again.
● All you can do is to confirm log (contents of memory
card).
● Perform the zero-point check (see 8-1-2) and check
whether the oil concentration detector can run normally.
● Inspect the bilge separator when the oil concentration
detector can run normally.
When the error still occurs, turn off the oil concentration
※
detector and replace the sensor unit.
● Turn off power and clean the sensor (with brush).
Turn on power again, and perform the zero-point check.
● Inspect thebilge separator when the oil concentration
detector can run normally.
When the error still occurs, turn off the oil concentration
※
detector and replace the sensor unit.
● Check the color of the desiccant (silica gel).
When the desiccant (silica gel) indicator is pink, turn off
the detector and replace the sensor unit.
● Use the oil concentration detector in the service
temperature range specified by "2-1. Product
specification."
● When the valve is in the pipeline before the sample
water inlet or fresh water inlet, check whether the valve
is in the "Open" (to supply) position. When the error
still occurs although the valve is in the "Open" position,
clean the fresh water line filter and check once more.
● The detection of the oil concentration detector is greatly
affected by the contaminants.
● Perform the zero-point check (see 8-1-2) and check
whether the oil concentration detector runs normally.
● Inspect the bilge pump when the oil concentration
detector runs normally.
● Clean the filter (see "8-5 Cleaning the filter") and clean
the detection tube (see ""8-4 Cleaning the sensor (brush
washing)).