Flowserve LRR1-40 TDS Control Unit - Manual (Page 22)

22
Operation
Normal operation
LED "Power" is illumin ated .
LEDs 1 - 4 are not illumin ated , the conductivity
electrode is immersed.
Continuous boiler blowdown
LED "Power" is illumin ated .
LED 2 is flashing while the continuous blowdown
valve is closing.
LED 3 is flashing while the valve is opening.
Intermittent boiler blowdown
Only applicable if Automatic Intermittent Blowdown Control was activated:
Upon application of mains voltage the timed intermittent blowdown interval (time between
intermittent blowdowns) is started.
During the time-controlled blowdown pulse the automatic intermittent boiler blowdown
takes place:
LED "Power" is illuminated.
LED 4 is lit during intermittent blowdown and relay
contact 4 is closed. The intermittent blowdown valve
opens.
Test
Test
Note
LEDs 2 and 3 go out once the valve position dictated by continuous
blowdown control is reached.
Test
Note
LED is not lit during the timed interval between intermittent boiler blowdowns.
Relay contact 4 is open, the intermittent blowdown valve is closed.