ADS Environmental Services FlowAlert QR 775011 A2 - Manual (Page 186)

Maintenance and Troubleshooting 7-21
General Float Switch Problems
The following tables contain general techniques for troubleshooting
float switches.
Warning: Contact your regional ADS representative for
further diagnosis before replacing a float switch.
Problem Float switch status is not consistent with pressure depth
readings.
Possible
Cause
Float switch may be unable to change position due to
obstruction or debris.
Float switch may be malfunctioning.
Possible
Solution
Inspect float switch in manhole for obstructions or debris
and make necessary modifications.
Replace float switch.
Problem Float switch does not change status when flow depth
reaches high or high high depth status.
Possible
Cause
Float switch may be unable to change to open
(horizontal) position due to obstruction or debris.
Connector may not be properly engaged.
Float switch may be malfunctioning.
Possible
Solution
Inspect float switch in manhole for obstructions or debris
and make necessary modifications.
Inspect connection between float and monitor.
Replace float switch.