Page 16
ENGLISH
Jandy
®
Pro Series Water Feature Pump
|
Installation and Operation Manual
6.2.3 Impeller Replacement
1.
Press the carbon face seal half, see Figure 8, on
the motor shaft using a twisting motion. Make
sure the carbon surface is facing toward the
ceramic ring in the backplate.
CAUTION
VERY IMPORTANT!
Grasp the lower portion of the
seal (opposite the carbon face) when installing the seal
or it will be damaged.
NOTE
To assist assembly, only use water or a soap solution
as a lubricant. Any other lubricant will destroy the seal
after a short period of time.
NOTE
Take great care to keep the seal and mating parts
clean.
2.
While holding the motor shaft with a ½" wrench,
thread the impeller onto the motor shaft. Hand-
tighten the impeller until it is secure.
3.
Install the impeller center screw into the center
of the impeller and tighten, using a No. 2 Phillips
screwdriver. Since the impeller center screw
is left-hand threaded, turn the screw counter-
clockwise to tighten it.
Do not overtighten.
4.
Replace the motor shaft cover by inserting the
cover tabs into the slots and rotating the cover
90º clockwise.
5.
Replace the diffuser over the impeller, using care
to insert alignment pins into the correct holes.
The molded-in arrow must point toward the
handle of the backplate.
6.
Replace the two (2) small Phillips-head screws.
Tighten the screws to draw the diffuser against
the motor backplate.
7.
Make sure the diffuser o-ring, o-ring groove, and
o-ring seal area are clean and free of debris, which
could cause a leak. If you removed the diffuser
o-ring, make sure you install it into the proper
groove, see Figure 5. If grease is used to retain
the o-ring, it
must
be silicone based.
Do not
use
petroleum-based grease. It
will
destroy the o-ring.
8.
Slide the diffuser into the mating hole in the pump
body. While supporting the motor, start two (2)
screws on opposite sides. This will hold the motor
in position while you start the other six (6) screws.
9.
Tighten the screws lightly in a crossing “X”
pattern using a 9/16" wrench starting with the
inner (middle) four (4), then the outer (top and
bottom) four (4) to draw the backplate to the
body in a even manner. Once all the screws are
snug, torque in the same order to 18 foot-pounds.
10. If the pump is located above water level of the
pool, remove the lid and fill the basket with water
before starting the pump.
11. To prevent air from leaking into the system,
remove debris around the lid seal seat.
12.
Hand-tighten
the lid to make an air tight seal.
Do
not use any tools to tighten the lid.
13. If a filter is installed in the system, open the
pressure release valve on the filter, and make sure
it is clean and ready for operation.
14. Switch on the circuit breaker to the pump motor.
15. Turn on the pump and check the system for
normal operation.
16. If a filter is installed in the system, when all the
air has left the filter, close the filter pressure
release valve.
Carbon Seal Surface
• Ceramic Face Seal
• Backplate Seal
• Carbon Face/ Spring
Side of Seal
• Impeller Side of the
Mechanical Seal
Figure 9. Backplate, Impeller, Diffuser, and
Mechanical Seal Exploded View
Backplate
Mechanical Seal
Impeller
Diffuser
Self Sealing Left
Handed Screw
Screws and
Washers (2)
Diffuser O-ring
Figure 8. Replace the Mechanical Seal
