Basement Sentry STWB140 Manual Del Usuario página 12

CONTROL VALVE ADJUSTMENT
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 float valve reaches the OFF position and
water stops flowing through the float valve.
This should be approximately 5 seconds.
This can be checked by raising the float to
actuate the pump and then releasing the
float. The pump should continue to run for
approximately 5 seconds.
2. If this time is significantly longer, the control
valve is overtightened and needs to be
loosened. If this time is significantly 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 float reaches the OFF
position.
5. Tighten lock nut to secure thumbscrew
position.
Locknut
12
Thumb
Screw