Cable Selection - Pentair MYERS 5 HP Quick Prime Serie Instrucciones De Operacion Y Mantenimiento

Motor Grounding Instructions
Reduced risk of electric shock during operation
of this pump requires the provision of acceptable grounding.
Failure to ground this unit properly may result in
severe electrical shock. If the means of connection to the
supply-connection box is other than grounded metal conduit,
ground the pump back to the service by connecting a copper
conductor, at least the size of the circuit conductors
supplying the pump, to the grounding screw provided within
the wiring compartment.
NOTE: National Electric Code requires pumps be grounded
at installation.
Motor Protection
Motors do not have built in thermal protection. It is highly
recommended that a properly sized magnetic starter be
used with all single and three phase motors.
All motors (single and three phase) should be equipped with
a correctly fused disconnect switch to provide amp overload
protection. Consult local or national electric codes for proper
fuse protection based on motor data chart below.
Phase Volts
1 230.
3 208
3 230
3 460

CABLE SELECTION

5 HP Motor
Rating Copper Wire Size
Voltage Phase 14 12
230 1 --- ---
207 3 --- ---
230 3 --- 130 210 340
460 3 330 530 850 1350 2150 3422 5440 8650
This table is based on copper wire. If aluminum wire IS
used it must be two sizes larger. Example: When the table
calls for #12 copper wire you would use #10 aluminum
wire.
Do not start single phase pump more than 10 times each
hour. Use a three phase motor for start/stop cycles more
rapid than 10 per hour.
Rotation Data
The pump must run in the direction of the arrow on the
pump bracket. Single and three phase motors can run in
either direction. At the time of installation, momentarily close
the entrance switch to determine rotation; if rotation is not
correct, interchange any two of the three motor leads which
will reverse the rotation.
Initial Priming
Do NotRun Pump Dry
The pump must be filled with water for the initial start.
Failure to do so will result in damage to the mechanical shaft
seal.
Service
Code Factor
Letter Amps
J 29.9
K 13.4
K 15.1
K 7.6
10 8 6 4
--- 150 250 400 625 1000
160 250 400 640 1020 1630
540 850 1360 2160
The unit is designed to automatically re-prime after the initial
prime when a check or foot valve is installed in the suction
line.
Fill the pump with liquid for the initial start through the
discharge opening in the top of the case. This can be
done either before the discharge piping is installed or it is
recommended to install a tee above the pump and use the
top of the tee for priming.
Note: Completely fill the pump case. If no check or foot
valve is used in the suction line, pour in approximately two
gallons of water. Install the discharge piping or pipe plug, if
a tee is used. It is suggested that a good grade of pipe thread
compound be used to eliminate the possibility of air or water
leaks in the piping. The unit can now be started.
Check or Foot Valve
It is recommended that either a check or foot valve be used
in the suction line on permanent installations. This will result
in quicker water delivery upon starting, therefore eliminating
potential priming problems.
If the pump is to be used in conjunction with a pressure tank
then a check or foot valve must be used.
Locked
Flushing
Rotor
The unit can be back flushed periodically to remove any
Amps
sand or debris that may have been pulled into the pump from
174
the liquid source. It is not necessary to remove any piping if a
174
tee is installed above the pump.
To back flush the unit, remove the plug in the tee (or the
174
discharge piping if a tee is not used) and the W' pipe plug
87
from the lower front face of the case. Pour water into the top
opening until the liquid coming from the lower front opening
is clean. It is possible to scrape out any debris from the
bottom of the case by reaching a wire or narrow scraper in
the lower tapping in the pump case. Reinstall all pipe plugs
2 0
or piping. Before returning the pump to service, it will be
necessary to re-prime the pump - see Initial Priming.
Draining Pump
To drain the pump, remove the plug from the discharge tee
and the W' pipe plug from the lower front face of the case. If
the unit is to be inoperative for an extended period of time it
is suggested that the unit be drained. The suction line should
also be drained to prevent freezing.
Remove the fuses from the entrance switch to insure that
the unit is not inadvertently started while drained to prevent
damage to the shaft seal if the unit is run dry.
Suction Screen
The liquid being pumped should be screened properly to
prevent debris from being taken into the system.
4