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MAINTENANCE
Air Valve Replacement
1. Follow steps 1 through 5 under "Vinyl Bag Replacement
_, Page
7.
2. Cut valve off as close to tank as possible.
Push remaining
por-
tion back into tank.
3. Tip tank on end and BE SURE all water is drained
from bag.
4. Carefully
remove bag ring from lip on tank opening
and push
bag ring back into tank; reach in around
it and remove
cut off
portion
of valve from tank.
5. Wipe a thin film of soapy solution
on replacement
valve and
from inside tank insert in hole in top of tank.
6. Pull valve through hole with pliers or a valve tool (available
at
your local filling station or Automotive
Center).
7. Follow steps 14 through
2O under
"Vinyl Bag Removal_,
Page
7, to reinstall
bag in tank.
Testing for Bag Leakage
1. Follow steps I through 4 tinder'Vinyl
Bag Replacement",
Page
7.
2. Tip tank on end, valve down.
Be careful
not to break valve!
3.
If bag leaks, water will run out of valve. If so, replace
bag as in-
structed above.
DISASSEMBLY
AND
ASSEMBLY
OF PUMP
g
JRisk of electrical
shock.
Be sure unit is grounded
I
WARNING
and power
disconnected
before attempting
any work on pump
or
motor.
Your pump
is designed
for ease in servicing.
Should repair
or re-
placement
of the motor
or seal be needed,
the pump
and piping
do not need to be disconnected
or disturbed.
1.
Disassemble
pump as follows:
A. Disconnect
power.
B. Remove
pressure
switch
tube from pump
body and allow
pump to drain.
C. Remove
four hexnuts
and lockwashers
(Key Nos. 24 and
23, Page 12) which
hold the pump
body to the motor.
D. Remove motor, seal plate, impeller,
rubber pad and diffuser
(Key Nos. 1, 3, 7, g and 9, Palle 12) as a unit. You may have
to pry gently with
two screwdrivers
between
the motor
flange and the pump body to separate
pump
and motor.
Reassembly
of pump:
A. install O-Ring gasket on seal plate (Key Nos. 5 and 3, Page
12).
B. Pick up a small amoutu
of petroleum
jelly on one finger and
spread evenly over seal plate and venturi O-Ring gasket for
lubrication
during
reassembly.
Be careful
not to nick or
tear O-Ring.
C. Replace
motor onto pump
body; be sure rubber pad (Key
No. 8, Page 12) stays in place on top of diffuser.
Remount
base on lower studs. Tighten four hexnuts and lockwashers
snugly (3545
inch-lbs, torque).
Do not overtl_ghten.
D. Replace
pressure
switch tubing and motor wiring.
E. Prime pump according
to instructions
above.
F. Check for leaks.
Removing
Motor
for Service
and Replacing
Shaft Seal
If it is necessary
to separate
motor and seal plate, always
replace
the shaft seal. We suggest
you purchase
this item, UIO96A,
and
have it on hand for future use.
NOTICE: The seal consists
of two parts, a rotating member
and a
ceramic
seat. The surfaces
of the seal are easily damaged.
Read in-
structions
carefully.
Remove
motor as follows:
1.
Disassemble
pump per instt'uctions
above.
2.
Remove
diffuser
and impeller
as follows
(Key Nos. 9 and 7,
Page 12).
A. Remove
screws
holding
diffuser.
B. Loosen two screws and remove
motor canopy
from motor
(Key No. 1, Page 12).
C. Place 7/16" open end wrench
on motor shaft flat.
D. Turn impeller
counterclockwise
when facing it.
8
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