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Question
With 61F-G1 Floatless Level Controller, the water level of a water supply is above the E2' height, but the pump does not operate. What is the cause of the problem and how can it be corrected?
Answer
The following items may be the cause, so check these.
Likely Causes
A power interruption occurred and the U1 Relay Unit was reset.
The U1 Relay Unit is not self-holding because of a disconnection or poor contact between the E2' electrode and its cable.
Countermeasures
1.Momentarily short the E1' and E3 terminals of the 61F-G1 Controller to operate (self-hold) the U1 Relay Unit.
2.When the U1 Relay Unit will not operate (self-hold), replace the U1 Relay Unit. Also, check whether there is a damaged cable between the 61F Controller and electrode, and check whether the E2' electrode is coated with tarnish or oil.
3.As an emergency measure, operation can be forced by shorting the E1' and E3 terminals on the 61F-G1 Controller, however, idling cannot be prevented in this case.
Recommended Products
Other Level Switches FAQ
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Why do the specifications for the High-sensitivity 61F Floatless Level Controller say, "possible to use with 15 kOHM or less, however, this may cause reset failure"?
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Can two 61F Floatless Level Controllers and two Electrode Holders be used in the same tank?
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When voltage is applied to 61F Floatless Level Controller, it operates regardless of the actual liquid level. What is the cause of the problem and how can it be corrected?
FAQ
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