8. Tighten the screws lightly in a crossing “X”
pattern using a 9/16" wrench. Start with the inner
(middle) four (4), then the outer (top and bottom)
four (4) to draw the backplate to the body in an
even manner. Once all the screws are snug, torque
in the same order to 10 foot-pounds.
Figure 14. Backplate, Impeller, Diffuser, Mechanical
Seal Exploded View
Diffuser O-ring
Screws (2)
Diffuser
Impeller
Mechanical Seal
Backplate O-ring
Backplate
6.2.3 Mechanical Seal Replacement
NOTE
This is a two-part replacement process.
The
mechanical seal must be replaced as a set.
NOTE
Refer to Figure 14 for an illustration of the
location of the mechanical seal and impeller.
CAUTION
Do not damage the ceramic or carbon surfaces of the
seals. If the surfaces are damaged, leaks will occur.
1. To access the mechanical seal, see Section 6.2.2,
Impeller Removal and Replacement.
2. Remove the carbon face seal half from the motor
shaft (See Figure 14). This is a spring-loaded seal.
Grasp the portion of the seal closest to the impeller
body and pull the seal off, using a twisting motion.
3. Remove the motor from the backplate, following
the steps in Section 6.2.4, Motor Replacement.
4. Place the backplate o-ring side down and force the
ceramic seal out using a screwdriver or drift.
5. Turn the backplate o-ring side up and insert the
new ceramic seal side into the backplate. Use
great care to press the seal in squarely with your
fingers. The ceramic is easily damaged and must
be pressed in using only your fingers or soft tools.
Do not use any lubricant other than water or soapy
water.
6. Install the backplate by following the relevant
steps in Section 6.2.2.1, Impeller Reassembly.
7. Install the motor by following the steps in
Section 6.2.4, Motor Replacement.
Diffuser
Diffuser O-ring
Pump Body
Figure 13. Pump Body and Diffuser Exploded View
9. If the pump is located above the water level of the
pool, remove the lid and fill the basket with water
before starting the pump.
10. To help prevent an air leak into the system, remove
any debris around the lid seal seat.
11.
Hand-tighten
the lid to make an air tight seal.
Do not use any tools to tighten the lid.
12. Open the pressure release valve on the filter and
make sure it is clean and ready for operation.
13. Switch on the circuit breaker to the pump motor.
14. Turn on the pump and check the system for normal
operation.
15. Once all the air has left the filter, close the
pressure release valve.
Page 20
Jandy
®
FloPro™ Variable-Speed Pump Series VS-FHP
|
Installation and Operation Manual
ENGLISH
