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30
Pump Reassembly/Installing New Seal
1. The ceramic seat must be clean and free of dirt, grease, dust, etc. Wet the outer edge of rubber cup
on the ceramic seat with a small amount of liquid detergent. Press the ceramic seat into the seal plate
firmly and squarely with finger pressure. See illustration below.
2. If the ceramic seat will not lock properly, remove it, place it face up on bench and reclean the cavity.
The ceramic seat should now lock.
3. If the seat still won't lock properly, place a cardboard washer over the polished face and use a piece
of 3/4" (19 mm) standard pipe for pressing purposes. Note: Be sure not to scratch or mar the
polished surface. This will cause the seal to leak.
4. Remount the seal plate on the motor. Tighten the bolts to 60-80 inch-lbs. (69-92 kg/cm) torque.
5. Apply a small amount of liquid detergent to the inside diameter of rotating half of seal.
6. Slide the rotating seal member, polished face last, over impeller sleeve until the rubber drive ring
contacts the shoulder. Note: Be sure not to nick or scratch the polished seal face. The seal will
leak if the face is damaged.
7. Screw the impeller onto the shaft (clockwise); this will automatically lock the seal in the seal plate.
Note: On models with an impeller screw: Install the impeller gasket and lock screw (left-hand
thread - turn counterclockwise). Torque lock screw to 50-55 inch-lbs. (57.6-63 kg/cm).
8. Mount the diffuser on the seal plate. Tighten the screws to 10-14 inch-lbs. (11.2-16.1 kg/cm)
torque.
9. Assemble the motor and seal plate to the volute. Be sure the clamp is properly seated. Note: Clamp
knob can be located in any position around volute; if it is moved after assembly, tighten knob
while tapping around clamp to assist sealing. Do not move clamp while pump is full of water.
WARNING - Hazardous pressure. Release all pressure from pump and piping system before working
on pump or attempting to adjust or remove clamp. Clamp may blow off of pump if adjusted under
pressure.
10. Reconnect the RS-485 communication cable to the pump.
11. Fill the pump with water.
12. Reinstall the pump lid and the plastic clamp. See "Pump Strainer Basket" on page 23 for details.
13. Prime the pump. See "Priming the pump for the first time or after servicing," on page 9 for details.
IntelliPro Installation and User's Guide
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