Operation
311200D
7
Operation
Leak Detector Operation
During normal operation, the LED on the leak detector
control box and the sensors will flash once per second.
If an error or a diaphragm rupture occurs, the LED and
sensors will flash three times per second and the alarm
will sound. The relay will trip and change state. To stop
the alarm, press the reset button or remove power for 30
seconds. See F
Maintenance
Clean Sensors
Clean the sensors whenever the pump is disassembled
for cleaning or inspection.
Test to ensure proper operation
1. Verify non-fault condition. With power to the control
box, verify that:
•
the LED indicator on the control box flashes
once per second.
•
both the yellow and blue LED indicators on
each sensor flash once per second.
2. Verify operation of the Optical sensor. Submerge
each sensor separately in a non-transparent fluid
such as milk. Verify that:
•
the alarm sounds.
•
the yellow LED on this sensor stops flashing.
•
the LED on the control box blinks three times
per second.
•
the relay is set and performs the intended oper-
ation (i.e. shuts down the pump).
3. Verify operation of the Conductive sensor. Sub-
merge each sensor separately in a conductive fluid
such as water. Verify that:
•
the alarm sounds.
•
the blue LED on this sensor stops flashing.
•
the LED on the control box blinks three times
per second.
•
the relay is set and performs the intended oper-
ation (i.e. shuts down the pump).
4. Verify loss-of-power condition: Disconnect the
power supply from the control box. Verify that:
•
the relay is set and performs the intended oper-
ation (i.e. shuts down the pump)
F
IG
. 6. LED and Reset Button
TI6850A
Always disconnect the power supply from the con-
trol box prior to cleaning the pump.
LED
Reset Button
