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To show errors:
press keys simultaneously
Error correction
1. Error E4 "Visual problem 1"
LED performance too low, too little light (or hardware fault)
Proposed solution:
Check whether the water is cloudy. Excess clouding can compro-
mise the measurement.
Check whether the measuring chamber/sight-glass window is
soiled.
Replace the sight glass made of glass to sight glass made of
PMMA, if the silicate content in the sample water is higher than 15
mg/l and a white film is deposited on the glass.
The sensor or the LED could be damaged.
Check for a lack of water.
Check whether the measuring chamber and the LED fitting have
been installed correctly. These elements can loosen during
transport. The measurement is no longer being carried out cor-
rectly.
If necessary, carry out a visual adjustment as described in the
chapter, "Test and Adjustment program".
2. Error E3 "Visual problem 2"
LED performance too high, too much light (or hardware fault)
Proposed solution:
Close the housing cover. The surroundings are too bright (sun-
light) and compromise the measurement.
The sensor or the LED could be damaged.
If necessary, carry out a visual adjustment as described in the
chapter, "Test and Adjustment program".
3. Error E2 "MST analysis"
Proposed solution:
Check whether the indicator bottle is empty.
Does the indicator display correspond to the indicator volume in
the bottle?
Check the indicator. Only use indicators which we have approved
for use in the Testomat
struments produce erroneous measurements or the error, "MST
analysis".
Check whether the stirring bar is present and turns.
Check whether the pump supplies indicator.
Check whether the dosing needle is blocked or its O-ring is dam-
aged. Make sure that the suction and pressure hoses do not draw
®
808. Indicators for other Testomat in-
Error correction
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