A common concern among techs is setting off the SVRS while vacuuming. By plugging a vacuum into the skimmer, a tech can cause the vacuum level to increase and the SVRS to trip.
“Vacuuming [from the skimmer] will definitely set it off,
so what you have to do is put it in ‘unprotected’
mode,” says Russ Burke, district sales manager for Hayward Pool
Products in Pomona, Calif.
This mode allows techs to clean the pool without tripping the
SVRS. However, note that there is a short time limit associated
with this feature, and techs may have to reset the unit more than
once during cleaning.
Similarly, plugging in suction side cleaners and filter
backwashing also can cause the unit to trip. Either use the bypass
mode or shut the pump off during this kind of maintenance.