Operating Guide

12
The backup sump pump control valve is preset
from the factory for ideal performance at most
municipal water pressures/installation heights.
Depending on the available water pressure and
height of installation, the control valve may need
to be adjusted to achieve optimal performance.
Refer to the following for this adjustment.
1. Check the backup sump pump run time after
the oat valve reaches the OFF position and
water stops owing through the oat valve.
This should be approximately 5 seconds.
This can be checked by raising the oat to
actuate the pump and then releasing the
oat. The pump should continue to run for
approximately 5 seconds.
2. If this time is signicantly longer, the control
valve is overtightened and needs to be
loosened. If this time is signicantly shorter,
the control valve is under tightened and needs
to be tightened.
3. Unscrew lock nut so that the thumb screw
may be adjusted.
4. Make adjustment to thumbscrew (In half-
turn increments, clockwise to tighten,
counterclockwise to loosen) and recheck
pump run time after the oat reaches the OFF
position.
5. Tighten lock nut to secure thumbscrew
position.
Locknut
Thumb
Screw
CONTROL VALVE ADJUSTMENT