Xylem IM182 Balanced Flow - Manual (Page 5)

5
CAUTION
connect the wires using the crimps. Finish by shrinking the
tubes over the crimps heating from the center outward.
The sealant in the tube will flow out the ends making a
watertight seal. If a heat shrink tube is burnt or split, the
connection will need to be remade.
Vinyl electrical tape is not acceptable for
underwater splices when using variable
speed drives due to the high potential for leakage to ground
through taped joints. Failure to use a waterproof heat shrink
kit will void the warranty.
Before installing the motor in the well, the drop cable must be
connected to the motor wires. Refer to the wire size chart when
selecting wire size for the drop cable. See Wire Sizing Table.
Wiring Pressure Transducer
Transducer wires must never be in same
conduit with power wires. There should
always be a minimum of 12" between transducer wires
and power wires. Failure to separate these wires can cause
controller malfunctions.
The pressure transducer cable is pre-wired at the factory. If
desired, the length of the cable can be changed. The cable
can also be put in conduit to protect against damage.
To change the length of the transducer cable:
• Cable length cannot exceed 200'.
• Disconnect transducer wires from terminal block by pushing
down on tabs at rear of block one at a time and pulling the
wires out of the terminal.
• Splice additional cable to transducer wire, cut off excess as
required.
• Reconnect wires to terminal block. Be sure wire colors match
labels on circuit board (B = Black, R = Red, W = White).
To put the transducer cable in conduit, do the following:
Disconnect the cable from the terminal block and remove
the cable strain relief in the bottom of the enclosure.
Starting at the enclosure, run flexible or rigid ½" conduit to
where the transducer is located. The last few feet of conduit
adjacent to the transducer will need to be flexible. The
conduit must be well supported – NO stress can be placed
on the pressure transducer connector. Use a strain relief
bushing to seal around the pressure transducer connector.
After reconnecting the transducer wires to
the terminal block and ground terminal, tug
on each wire individually to ensure they are tight.
Any exposed metal in the system piping,
including transducer case, must be grounded
to the service entrance per NFPA 70: National Electrical
Code, Article 250.
The transducer cable has a Green ground wire and a ground
clamp supplied to facilitate grounding the transducer. See
Figure 1.
Motor Wires – See Table 4
NOTE: A MINIMUM OF 75ºC COPPER WIRE IS MANDATORY.
Refer to the Table 4 for wire sizing and maximum wire
lengths. Charts are designed to limit voltage drop to 5%.
Size wire for worst case scenarios (low voltage) and stay
within the charts recommendations. Insure that the wire is
rated for direct burial and/or submergence.
Figure 1: Transducer Grounding
Figure 2 shows the terminal block where the motor and
input wires connect. The protective cover on the terminal
block snaps off and on. Attach the motor wires to the
terminals according to colors marked on circuit board:
GND = Green, RED = Red, BLK = Black, YEL = Yellow.
Reversing any two leads on RED/BLK/YEL will change the
direction of motor rotation. Later during start-up you may
need to change motor rotation.
Input Power
SHOCK OR ELECTROCUTION
HAZARD
Connect a ground wire from the service panel to the
terminal marked GND. Controller has high leakage to
ground. Controller ground terminal must be connected to
the service entrance ground terminal. Failure to do so will
result in high voltage being present on the controller chassis.
Connect two “hot” wires from the 2 pole circuit breaker to
the terminals marked L1 and L2.
The input power system used must be a grounded power
system. The voltage measured from L1 to L2 must be in the
range of 196Vac to 265Vac. The voltage measured from
L1 to GND must be equal to the voltage measured from
L2 to GND. These voltages must be within the range of
120Vac +/- 10%. Reduced input voltage will reduce system
performance.
Do not use a Ground Fault Circuit Interruptor (GFCI) with
this product or nuisance tripping will result.
Figure 2: Wiring Connections
NOTE: IT MAY BE NECESSARY TO PLACE A DISCON-
NECT SWITCH IN FRONT OF AND WITHIN SIGHT
OF THE CONTROLLER – CONSULT LOCAL CODES.
CAUTION
CAUTION
WARNING
CAUTION
Incoming Power
Wires to Motor