User Manual

21
INTELLIFLO
®
Variable Speed Pump Installation and User’s GuideINTELLIFLO
®
Variable Speed Pump Installation and User’s Guide
To remove and repair the motor subassembly, follow the
steps below:
1. Turn off the pump circuit breaker at the main panel.
2. Disconnect the RS-485 communication cable from
the pump (if connected to pump).
3. Drain the pump by removing the drain plugs. No tools
are required.
4. Remove (3) Phillips head screws from the top of the
device located under the key pad cover.
5. Remove the drive by lifting upward to pull off the
motor.
6. Use the 9/16 inch wrenches to remove the six bolts
that hold the housing (strainer pot/volute) to the rear
subassembly.
7. Gently pull the two pump halves apart, removing the
rear subassembly.
8. Use a 3/32 inch Allen head wrench to loosen the two
holding screws located on the diffuser.
9. Hold the impeller securely in place and remove
the impeller lock screw by using a Phillips head
screwdriver. The screw is a left-handed thread and
loosens in a clockwise direction.
10. Use a 1/4 inch flat blade screwdriver to hold the motor
shaft. The motor shaft has a slot on the end which is
accessible through the center of the fan cover.
Note: If the torque is too high to hold the screwdriver
by hand then an adjustable wrench may be used to
hold the screwdriver shaft in place. Use locking pliers
instead if your screwdriver has a round shaft.
11. To unscrew the impeller from the shaft, twist the
impeller counterclockwise.
12. Remove the four bolts from the seal plate to the
motor, using a 9/16 inch wrench.
13. Place the seal plate face down on a flat surface
and tap out the carbon spring seat.
14. Clean the seal plate, seal bore, and the motor shaft.
Motor Care
Protect from heat
1. Shade the motor from the sun.
2. Any enclosure must be well ventilated to prevent
overheating.
3. Provide ample cross ventilation.
Protect against dirt
1. Protect from any foreign matter.
2. Do not store (or spill) chemicals on or near the motor.
3. Avoid sweeping or stirring up dust near the motor
while it is operating.
4. If a motor has been damaged by dirt it may void the
motor warranty.
5. Clean the lid and clamp, O-ring, and sealing surface
of the pump pot.
Protect against moisture
1. Protect from continuous splashing or continuous
sprayed water.
2. Protect from extreme weather such as flooding.
3. If motor internals have become wet - let it dry before
operating. Do not allow the pump to operate if it has
been flooded.
4. If a motor has been damaged by water it may void
the motor warranty.
Shaft Seal Replacement
The Shaft Seal consists primarily of two parts, a rotating
ceramic seal housed in the impeller and a stationary
spring seal in the sealplate. The pump requires little or
no service other than reasonable care, however, a shaft
seal may occasionally become damaged and must be
replaced.
Note: The polished and lapped faces of the seal could
be damaged if not handled with care.
SERVICING
Always disconnect power to the IntelliFlo
®
Variable Speed Pump at the circuit breaker and disconnect the communication cable
before servicing the pump. Failure to do so could result in death or serious injury to service people, users or others due to electric
shock. Read all servicing instructions before working on the pump.
DO NOT open the strainer pot if pump fails to prime or if pump has been operating without water in the strainer pot. Pumps operated
in these circumstances may experience a build up of vapor pressure and may contain scalding hot water. Opening the pump may
cause serious personal injury. In order to avoid the possibility of personal injury, make sure the suction and discharge valves are
open and strainer pot temperature is cool to touch, then open with extreme caution.
Be sure not to scratch or mar the polished shaft seal faces; seal will leak if faces are damaged. The polished and lapped faces of
the seal could be damaged if not handled with care.
Pump illustrated parts view on the next page
Pump Disassembly
Tools required:
• 3/32 inch Allen head wrench
• Two (2) 9/16 inch open end wrenches
• 1/4 inch flat blade screwdriver
• No. 2 Phillips head screwdriver
• Adjustable wrench