Xylem IM255 AQUAVAR Intelligent Pump Controller - Manual (Page 56)

the pressure tank. Ensure the pressure sensor is within 10 feet of the pressure tank.
Installing the pressure sensor far away from the pressure tank may result in pressure
oscillations. Do not install the pressure sensor in a location where freezing can occur. A
frozen pipe can cause damage to the pressure sensor.
Underwater connection
When using submersible motors, a waterproof connection is required between the drop
cable and motor leads. The underwater connection where the drop cable connects to the
motor wires must be made using a waterproof heat shrink kit. To make the connection:
1. Strip the wires 1/2” and place the heat shrink tubes over the wires.
2. Connect the wires using the crimps.
3. Shrink the tubes over the crimps by heating from the center outward.
• The sealant in the tube will flow over 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. There is a high potential for leakage to ground through taped joints.
CAUTION:
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.
Mechanical Installation
54 Aquavar ® Intelligent Pump Controller INSTRUCTION MANUAL