FCI Watermakers MAX-Q+, User Manual & Installation Manual

Page: 107 / 170

FCI WATERMAKERS, INC. 107 Maintenance & Repair
REPLACE THE CERAMIC SEAL (P/N 43-2235):
• Approximately every 1,000 hours, or
• At the sign of leakage
When replacing the ceramic seal, refer to the exploded view of the low
pressure pump, shown in the assembly drawing on the next page.
DISASSEMBLY
Before you begin, please be sure to disconnect the electrical power to the system.
Remove the four 3/8‑16 Bolts holding the volute to the motor bracket. To remove the
impeller, remove the bearing cap on the motor to expose the screwdriver slot on the
motor shaft. Hold the motor shaft with a large screwdriver and remove the impeller by
grasping it with your hand and turning the impeller counter clockwise. Remove the Seal.
Two screwdrivers wedged into the seal at 180 degrees apart serve as tools to wedge the
seal out. The ceramic seat is removed by removing
the end bell gasket.
REASSEMBLY
Clean the motor shaft and the bracket of any corrosion or salt deposits. Replace the end
bell gasket and the tap seat portion into the bracket cavity. Use a new gasket. Place the
ceramic seat into the cavity over the shaft. Make sure that the polished side is toward the
end of the shaft. Tap into place evenly using a hollow piece of wood or plastic tool. If a
metal tool is used to tap it into place, protect the seat with cardboard or a clean cloth.
Lubricate the shaft with water, soapy water, or a light oil, and slip the rotating portion
of the seal over the shaft with the carbon element toward the ceramic. Slide it down
onto the shaft as far as possible. Apply blue Loctite® to the motor shaft threads. Hold the
Motor shaft and reinstall the impeller. Tighten the impeller by turning it clockwise until
it is snug. Reinstall the volute. Tighten the bolts evenly. Thoroughly prime the pump.
LOW PRESSURE PUMP / MAINTENANCE & REPAIR
(continued)