Flint & Walling PB0508S031 Manual De Instrucciones De Operación Y Partes página 9

Installation (Continued)
5. Specific Wiring Procedure (Refer to Figures 9, 10, 11, 12,
13, 14 and Minimum Wire Size Chart).
a. Select the voltage you are to use, either 115V or 230V
single phase, 230V or 460V three phase.
b. The 1/3, 1/2 and 3/4 HP single phase pumps are factory
connected for 115V at the motor. The 1, 1
HP pumps are factory connected for 230V at the motor.
Three phase models are factory connected for 230V at
the motor.
c. If the motor wiring must be changed to conform to your
specific voltage requirements then the motor, pressure
switch or other controls should be rewired to conform
to one of the wiring diagrams (either 115V or 230V,
single phase; 230V or 460V, three phase). Single phase 3
HP motors are 230V only and cannot be wired for 115V
service.
d. The motor wiring diagrams are Figures 9, 10, 11, 12, 13
& 14, and also are located on the motor label of the
pump.
6. Remove the rear access cover of the motor.
7. Make the wiring change and replace the rear access
cover.
Replace rear access cover before starting
!
or operating pump. Failure to do so can
result in personal injury.
IMPORTANT: Do not use an extension cord or splice wires.
Joints should be made in an approved junction box. If the
above information or the following wiring diagrams are
confusing, consult a licensed electrician.
All units are not supplied with pressure switches, float
8.
devices, on/off switches, or the like (control devices).
Controls should be wired in at this time, utilizing
whatever instructions come with the controls. All
units supplied with cords, will run whenever cord is
plugged into power and will turn off whenever cord is
disconnected from power.
MOTOR PROTECTION
All single phase motors have built in thermal protection
for all voltages. The overload protects the motor against
burnout from overload of low voltage, high voltage and
other causes. The device is automatic and resets itself once
the temperature has dropped to a safe point. Frequent
tripping of the device indicates trouble in the motor or
power lines and immediate attention is needed.
Never examine, make wiring changes or
!
touch the motor before disconnecting
the main electrical supply switch. The
thermal device may have opened the electrical circuit.
Three phase motors do not have a built in thermal
protection. It is recommended that a properly sized
magnetic or manual starter (both with properly sized
heaters) be used with all three phase motors. Install starters
following instructions of the starter manufacturer. See
Motor Rotation under Operation Section for changing
rotation on three phase motors.
All motors (single and three phase) should be equipped with
a correctly fused disconnect switch to provide protection.
Consult local or United States National Electric Codes for
proper fuse protection based on motor data chart (See
Charts C, D and Wire chart F).
Copyright © 2014 FLINT & WALLING, INC. • 95 North Oak St. • Kendallville, IN 46755
Operation
water or abrasive liquids. To do so will cause pump failure
and will void the warranty.
VALVES
The inlet valve should be in the full open position and the
, 2 and 3
1 /
2
discharge valve should be partially open, permitting some
back pressure to be exerted against the pump when starting
up. Open valve after start up is completed.
PRIMING
NOTE: Before starting the pump it is absolutely necessary
that both the pump and the inlet pipe be completely
filled with water.
PRESSURE BOOST INSTALLATIONS
Priming is automatic when pump is connected to a pressure
source such as a hydrant or city main (See Figures 6, 7 & 8).
1. Open valves or nozzle on inlet and discharge side of
pump.
2. To relieve trapped air, allow water supply to run a
minimum of 30 seconds before starting the pump.
IMPORTANT: An adequate flow of water going into the
pump is required so that the pumps impellers and shaft seal
do not run dry and fail.
3. If you installed a pressure gauge at the pump inlet, a
reading of 2 psi minimum should show whenever the
pump is in operation (See Figures 6, 7 & 8).
This reading insures that there is an ample supply of water
into the pump inlet housing.
MOTOR/PUMP ROTATION
1. Single phase models are one (1) rotation only
(counterclockwise when facing the pump end) and
cannot be reversed.
2. Proper rotation of pump impeller is critical for three
phase pumps. Pump motor should turn counterclockwise
(CCW) when facing pump end. Momentarily "bump"
(apply power for less than a second) the motor to check
for proper rotation. To change rotation on three phase
units, interchange any two (2) incoming line (power)
leads.
GPM thru the pump. Do not restrict the inlet line to the
pump.
If driver (electric motor) is overloaded, a valve can be
installed in the discharge line to increase the back pressure
and reduce driver loading.
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Unit must be full of fluid before
operating. Do not run dry, or against a
closed discharge. Do not pump dirty
Do not go over recommended maximum
operating pressure (see Specifications),
while maintaining minimum flow of 1.5