Xylem IM103 R03 5 and Larger Submersible Pump - Manual (Page 6)

6
3.2 Splice Drop Cable to Motor Leads
When the drop cable must be spliced or connected to the
motor leads it is necessary that the splice be watertight. The
splice can be done with heat shrink kits, compression fittings,
or waterproof tape. Match motor leads and drop cable by
color codes or identify drop cable wires to insure a proper
connection at the control box.
A. Heat Shrink Splice Instructions
To use a typical heat shrink kit: strip ½" from the motor
wires and drop cable wires, it is best to stagger the splices.
Place the heat shrink tubes on the wires. Place the crimps
on the wires and crimp the ends. Slide the heat shrink
tubes over the crimps and heat from the center outward.
The sealant and adhesive will ooze out the ends when the
tube shrinks. The tube, crimps, sealant, and adhesive
create a very strong, watertight seal. Overheating may
burn the heat shrink tubes.
B. Taped Splice Instructions
1) Strip individual conductor of insulation only as far as
necessary to provide room for a stake type connector.
Tubular connectors of the staked type are preferred. If
connector O.D. is not as large as cable insulation,
build-up with rubber electrical tape.
2) Tape individual joints with rubber electrical tape, using
two layers; the first extending two inches beyond each
end of the conductor insulation end, the second layer two
inches beyond the ends of the first layer. Wrap tightly,
eliminating air spaces as much as possible.
3) Tape over the rubber electrical tape with #33 Scotch
electrical tape, or equivalent, using two layers as in step
“B” and making each layer overlap the end of the
preceding layer by at least two inches.
C. Compression Splice Kits
Consult instructions supplied with compression splice kits
or consult your local supplier.
3.3 Mounting the Motor Control Box
Single phase 3-wire control boxes are suitable for vertical
mounting in indoor or outdoor locations. They will operate
at temperatures between 14ºF ( -10º C) and 122º F (50º C).
Select a shaded, dry place to mount the box. Insure that there
is enough clearance for the cover to be removed.
3.4 Verify Voltage
Insure that motor nameplate voltage and power supply
voltage are the same. Three-phase starter coils are very
voltage sensitive, always verify actual supply voltage with
a voltmeter. High or low voltage will damage motors and
controls and is not covered under warranty.
3.5 Turn Supply Power Off
Use a disconnect switch where required by code. Turn the
circuit breaker OFF and lock-out the disconnect switch in
the OFF position to prevent accidentally starting the pump
before you are ready.
3.6 Make Connection to Single Phase (1Ø)
Control Box or Three Phase (3Ø) Starter
Do not power the unit or run the pump until all electrical
and plumbing connections are completed. Exception – to
verify 3 phase motor rotation, it is acceptable to power the
motor before it is attached to the water end to verify cor-
rect rotation. After checking rotation lock-out disconnect or
circuit breaker in OFF position!
Verify that the disconnect or breaker is OFF before mak-
ing any connections to the power supply. Always follow the
National Electric Code (N.E.C.) in the U.S., or the Canadian
Electrical Code in Canada, as well as all state, provincial, or
local codes.
A. Single Phase (1Ø) Three-Wire Control Box Wiring
Connect the color coded motor leads to the motor
control box terminals –
Y (yellow), R (red), and B (black); and the Green or bare
wire to the green ground screw.
Connect wires between the Load terminals on the pres-
sure switch and control box terminals L1 and L2. Run a
ground wire between the switch ground and the control
box ground. See Fig. 7 or 8
B. Three Phase (3Ø) Starter Wiring
Connect the motor leads to T1, T2, and T3 on the 3
phase starter. Connect the ground wire to the ground
screw in the starter box. Follow starter manufacturers
instructions for connecting pressure switch (where used)
to starter. See Fig. 9 or 10
3.7 Make Power Supply Connection
Provide a separate fused or circuit breaker protected branch
circuit for the pump. Install a main disconnect switch in full
view and easily accessible from the pressure switch and tank
location.
Single phase:
With pressure switch – make the connection from the pres-
sure switch Line terminals to the disconnect switch (where
used) and then to the circuit breaker panel.
Without pressure switch – make the connection from the
control box L1 and L2 terminals to the disconnect switch
(where used) and then to the circuit breaker panel.
Three phase - make the connections between L1, L2, L3, and
ground on the starter to the disconnect switch and then to
the circuit breaker panel.
CAUTION
DANGER
CAUTION
CAUTION