Shaft Seal Replacement; Pump Reassembly - Pentair WHISPERFLOXF VS Guía De Instalación Y Del Usuario

18

Shaft Seal Replacement

The Shaft Seal consists of two halves, a rotating spring seal
and a fixed ceramic seal. The shaft seal may occasionally
become damaged and require replacement.
Scratching, marring or otherwise damaging the polished
shaft seal faces will cause the seal to leak. Always
handle the shaft seal faces with care and clean them thoroughly before
reassembling the pump.
1. Ensure you have completed all pump disassembly
instructions on the previous page.
2. Remove the old Spring Seal from the impeller shaft
with a pair of pliers.
Note: When removing the spring seal the inner
sleeve of the seal may stick to the shaft. Ensure it is
removed before installing the new spring seal.
3. Place the seal plate face down on a flat surface and tap
out the old ceramic seal with a flat-blade screwdriver.
4. Flip the seal plate over and thoroughly clean the seal
cavity.
5. Lightly lubricate the outside rubber surface of the new
ceramic seal with a silicone lubricant.
6. With the White Ceramic Face upwards, firmly press
the new Ceramic Seal into the seal plate cavity with
your thumbs.
7. Thoroughly clean the seal face with a clean cloth.
8. Using a 9/16" wrench, secure the seal plate to the
motor with the four (4) motor bolts. Tighten to 75-80
in-lbs. (86-92 kg/cm).
9. With the Flat Face towards the impeller, slide the
new spring seal onto the impeller shaft.
10. Thoroughly clean the seal face with a clean cloth
11. Hold the motor shaft in place at the rear of the motor
and hand tighten the impeller clockwise onto the
motor shaft.
12. Continue reassembling the pump according to the
instructions given in Pump Reassembly.
Spring Half: Flat
face towards
impeller
Shaft Seal Replacement
XF
®
WHISPERFLO VS and MAX-E-PRO
DRIVE COVER
SCREWS (x4)
Ceramic/
Rubber Half: DRIVE
GASKET
White ceramic
face outward
DRIVE
MOTOR
MOTOR
NUT AND
WASHER (x4)
XF
®
VS Commercial Variable Speed Pump Installation and User' s Guide

Pump Reassembly

1. Using a 9/16" wrench, secure the seal plate to the
motor with the four (4) motor bolts. Tighten to 75-80
in-lbs. (86-92 kg/cm).
2. Hold the motor shaft in place at the rear of the motor and
hand tighten the impeller clockwise onto the motor shaft.
3. Continue to hold the motor shaft in place and reinstall
the impeller screw and washer.
Note: The impeller screw is reverse thread and
tightens counter-clockwise.
Note: Some pumps contain an O-ring instead of a
washer. Before reassembling, inspect the O-ring for
damage and replace if needed.
gloves are recommended when holding the impeller during disassembly
and reassembly.
4. Secure the diffuser onto the seal plate with the three
(3) diffuser screws. Ensure the plastic pins and holding
screw inserts are aligned (see "TOP" indicator).
Note: Ensure that the seal plate and diffuser
O-rings are clean and free of debris.
5. Using a 9/16-inch open-end wrench, secure the motor
assembly to the strainer pot with the six (6) seal plate
nuts and washers. Tighten to a maximum of 100 in-lbs
(115 kg/cm).
6. Carefully feed the motor connections through the
opening in the front of the drive.
7. Secure the drive onto the motor with the four (4) drive-
to-motor screws.
8. Reconnect the keypad to the drive.
9. Ensure the drive gasket is correctly seated and secure
the drive cover using the four (4) drive cover screws.
10. Reinstall both drain plugs.
11. Prime the system. See page 10 for priming
instructions.
DRIVE
COVER
SEAL PLATE NUT
AND WASHERS (x6)
Motor Assembly Breakdown
The impeller may have sharp edges that could
potentially cut or scratch the user's hands. Safety
DRIVE TO MOTOR
SCREWS (x4)
SEAL PLATE
MOTOR
CONNECTIONS
SHAFT SEAL
SEAL PLATE O-RING
IMPELLER
DIFFUSER
DIFFUSER SCREWS (x3)
DIFFUSER O-RING
IMPELLER
SCREW AND
WASHER