P/N 071109
6
Rev. H 04/20/12
B. Pump Reassembly/Seal Replacement; see Figure 4.
NOTE
It is important that the O-rings be kept clean and well lubricated. We recommend a silicone base lubricant for best results.
CAUTION
Be sure not to scratch or mar the polished shaft seal faces; the seal will
leak if faces are damaged.
1. When installing the replacement shaft seal, use silicone sealant on
the metal portion before pressing into the seal plate, being careful
to keep off of the seal face. Ensure the seal is fully seated and
allow 24 hours for sealant to cure. (Complete seal plate w/seal
replacement kit available, P/N 350201/350101.)
2. Before installing the ceramic section of the seal into the impeller,
be sure the impeller is clean. Use a light density soap and water
to seal the seal. Press the seal into the impeller with your thumbs
and wipe off the ceramic and carbon faces with a clean cloth.
3. Remount the seal plate to the motor by installing bolts in an
X pattern and tightening to 70 in-lbs.
4. Clean the motor shaft thread and the impeller insert, then screw the impeller onto the motor shaft.
5. Screw in the impeller lock screw (counter-clockwise and tighten to 25 in-lbs. while holding the motor shaft with wrench).
6. Remount the diffuser onto the seal plate. Make sure the plastic pins and holding screw inserts are aligned.
7. Grease the diffuser O-ring and seal plate gasket.
8. Grease the bolt threads, assemble the motor sub-assembly to the strainer pot-pump body by using the two through bolts
for proper alignment. Do not tighten the through bolts until all 6 bolts are in place and finger tightened. Torque in a cross
pattern to 110 in-lbs.
9. Fill the pump with water.
10. Reinstall the pump lid and plastic clamp; see SECTION IV. RESTART INSTRUCTIONS.
11. Reprime the system.
C. The Shaft Seal.
1. The Shaft Seal consists primarily of two parts, a rotating member and a ceramic seal.
2. The pump requires little or no service other than reasonable care, however, a Shaft Seal may occasionally become
damaged and must be replaced.
CAUTION
The polished and lapped faces of the seal could be damaged if not handled with care.
CAUTION
In mild climate area, when temporary freezing conditions may occur, run your filtering equipment all night to prevent freezing.
SECTION IV. RESTART INSTRUCTIONS
A. If pump is installed below the water level of the pool, close return and suction lines prior to opening hair and
lint pot on pump. Make sure to re-open valves prior to operating.
Lockscrew
Lockscrew Seal
Gasket
Seal Plate
Bolt
Water Slinger
Motor Shaft
Impeller
Figure 4.
Summary of Contents for WhisperFlo
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