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Service
PUMP START-UP AFTER STORAGE
Replace all drain plugs and close all drain valves in system.
Be sure all connections are tightly sealed.
After initial check is made, fill pump according to
"Priming the Pump," above.
SHAFT SEAL REPLACEMENT
IMPORTANT: The highly polished and lapped faces of
the seal are easily damaged. Follow instructions and
handle the seal with care.
Be sure unit is grounded and power discon-
nected before attempting any work on
Hazardous
pump or motor.
voltage
REMOVAL OF OLD SEAL
Refer to Figure 3 for Mechanical Seal parts indentificaiton.
Stationary
Seat
Figure 3
Step 1. Disconnect all power to pump.
Step 2. Close isolation valves to cut pump off from system.
Step 3. Drain pump; be sure to vent pump.
Step 4. Remove motor hold down bolts and bolts holding
adapter/seal plate (Key No. 6, Page 9) to pump
body (Key No. 20). Slide motor, adapter/ seal
plate and impeller (Key No. 12) backward to
clear pump body.
Step 5. Remove impeller screw and washer from end of
shaft and slide impeller off of shaft.
Step 6. Unbolt adapter/seal plate from motor.
Step 7. Use two screwdrivers (Figure 4) or gear puller to
carefully separate motor from adapter/seal plate,
bringing rotating half of seal (Key No. 10) off with
adapter/seal plate. Shaft sleeve (Key No. 2A) may
come off with seal.
Step 8. Use hammer, if necessary, to drive shaft sleeve
out of seal. Clean up shaft sleeve with emery
paper if necessary.
Step 9. Place adapter/seal plate face down on bench and
drive old stationary half of seal out of
adapter/seal plate by carefully taping with screw-
driver and hammer (Figure 5).
Rotating
Seal
Spring
Step 10. Use a wire brush to thoroughly clean
adapter/seal plate cavity. Be sure all dust and
grime are out of seal cavity before installing
new seal.
Rotating Seat will come off
with adapter/sealplate.
Figure 4
Figure 5
INSTALLING NEW SEAL
Step 1. IMPORTANT: Seal faces are highly polished and
lapped. Handle with care. Any mar, nick or
scratch on seal face will cause it to leak. BE
SURE to install with polished faces toward each
other.
Step 2. Clean polished surface of ceramic seat with clean
cloth.
Step 3. Wet O-Ring around ceramic seat with liquid
soap.
Step 4. Press stationary (ceramic) half of seal into cavity
firmly and squarely with thumb pressure. If it
does not seat properly, remove and place face up
on bench. Re-clean adapter/seal plate cavity. Seal
should now seat correctly.
7
If Gear Puller is used,
place jackscrew here.
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