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Start
Operation
(Drainage)
Level Relay Unit
Pump
Water
Level
Condition
Drop
[Switch on]
Operation
(Drainage)
Stop
Operation
(Drainage)
Start
Operation
(Drainage)
Drop
Drop
Rise
Drop
The draining of water by the timer lasts
approximately 1 minute.
(Detection Time : more than one (1) second)
(Electrodes open Trips the timer)
(Detection Time : more than one (1) second)
Level Relay
Unit
Level Relay Unit
Electrode
※
※
When the water level rises and the water
surface comes in contact for more than one
(1) second with the electrodes, the pump will
restart.
The pump will stop 1 minute later.
The pump will also stop after a continuous
dry run, in some cases.
If the water surface comes in contact for more than
one (1) second with the electrodes within 1 minute,
the pump will operate continuously even though the
timer has tripped.
As the water level drops and the water
surface recedes from the electrodes, the
timer trips to drain water.
The electrodes of the level relay unit are
submerged, causing the current to operate
the pump.
