3. Loosen control valve locking screw.
4. Rotate the valve to the closed position.
5. Prime the pump (completely fill pump and piping with
water)
6. Start pump
7. Open valve slowly until a rapid drop in pressure and
flow is noticed, or grinding/ticking noise in the pump is
heard. This point is sometimes associated with fluttering
of the pressure gauge needle. Begin rotating the
valve in the opposite direction (towards closing) until flow
and pressure are stabilized and/or the noise is gone.
8. Tighten the locking screw.
PRESSURE SWITCH ADJUSTMENT
The pressure switch is set to start the pump at 30 psi and
to stop at 50 psi.
THE PRESSURE SWITCH SHOULD
NOT REQUIRE ADJUSTMENT FOR A TYPICAL PUMP
INSTALLATION. Adjust the switch only if necessary,
using the following procedure:
1.) Turn DIFFERENTIAL nut
(See FIGURE 7 and table
below) clockwise to increase the pressure difference
between CUT-IN (pump on) and CUT-OUT (pump off) by
raising the CUT-OUT pressure.
2.) Turn RANGE nut
(See FIGURE 7 and table below)
clockwise to simultaneously increase both the CUT-IN
and CUT-OUT pressure equally.
NOTE: An optional pressure gage is required when
adjusting the pressure switch to determine when the
desired pressure settings are achieved. For shallow well
installations, a pressure port has been provided in the top
of the pump near the discharge for this purpose. For
deep well installations, the pressure gauge needs to be
located between the control valve and the pressure tank.
DO NOT switch on the power before the pump is primed
by filling the pump case completely full of water, as
damage may occur to the seal and other internal
components if run dry.
PRESSURE SWITCH ADJUSTMENT EXAMPLE:
ASSUMES PRESSURE SWITCH IS INITIALLY SET
WITH A CUT-IN PRESSURE OF 30 PSI AND CUT-OUT
PRESSURE OF 50 PSI.
Starting
CUT-IN /
CUT-OUT
(psi)
Nut
Adjustment
Final
CUT-IN /
CUT-OUT
(psi)
30/50
Clockwise turn of
Differential Nut
30/60
30/50
Clockwise turn of
Range Nut
40/60
NOTICE: FAILURE TO ADJUST PRESSURE SWITCH
CUT-IN AND CUT-OUT SETTINGS PROPERLY MAY
CAUSE THE PUMP TO RUN CONTINUOUSLY OR
CYCLE RAPIDLY. CONTINUOUS OPERATION OR
RAPID CYCLING WILL DAMAGE PUMP AND MAY
CAUSE PREMATURE FAILURE OF OTHER SYSTEM
COMPONENTS.
INSTALLATION RECORDS
To keep an accurate record of your installation, be sure
to fill out the data below:
Date of Installation: _____________________________
Pump Model No: _______________________________
Depth of Well (ft.): ______________________________
Depth of Water (ft.): _____________________________
Inside diameter of well: __________________________
Suction pipe size: ______________________________
Drive water pipe size (Deep well only): ______________
Pressure switch setting
C.I.: _____________ C.O.:
_____________
Suction pipe length (ft.): _________________________
Discharge pipe length (ft.): _______________________
Motor manufacturer: ____________________________
Motor model No: _______________________________
HP: _________________________________________
Volts: ________________________________________
Wire gauge size: _______________________________
GROUND
LINE
LINE
LOAD
LOAD
Differential Nut
Range Nut
To circuit breaker
or fused
disconnect switch
FIGURE 7 - PRESSURE SWITCH ELECTRICAL
CONNECTIONS, FACTORY PRE-SET TO 230 VOLTS
