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520-222-000

1/04 Rev C

Model S30 Metallic Design Level 1 Page 23

DIAPHRAGM SERVICING

To service the diaphragms first shut

off the suction, then shut off the
discharge lines to the pump. Shut off the
compressed air supply, bleed the
pressure from the pump, and disconnect
the air supply line from the pump. Drain
any remaining liquid from the pump.

Step #1:

See the pump assembly

drawing, and the diaphragm servicing
illustration.

Using a 9/16" wrench or socket,

remove the 16 capscrews (item 10), and
hex nuts that fasten the manifolds (items
22 & 23) to the outer chambers (item 14).

Step #2:

Removing the outer

chambers.

Using a 11/16" and a 5/8" wrench or

socket, remove the 16 capscrews (items
9), and hex nuts that fasten the outer
chambers, diaphragms, and inner
chambers (items 15) together.

Step #3:

Removing the diaphragm

assemblies.

Use a 1

" (27mm) wrench or six

pointed socket to remove the diaphragm
assemblies (outer plate, diaphragm, and
inner plate) from the diaphragm rod
(item 32) by turning counterclockwise.

NOTE:

To uninstall the diaphragm

plates from the diaphragm, hold the inner
diaphragm plate using one of two
methods:

Preferred Method: Place the

assembled plates and diaphragm in a
large vise, gripping on the exterior cast
diameter of the inner diaphragm plate
(see the drawing at far right).

Alternate Method: When a larger vise

is not available, insert a 1/4 - 20UNC hex
capscrew or setscrew (standard
hardware) into the tapped hole in the inner
diaphragm plate. Insert the assembled
plates and diaphragm into a vise with the
stud from the outer plate and the
1/4 - 20 fastener loosely between the
jaws of the vise (see illustration at right).

Use a 1

" wrench or socket to

remove the outer diaphragm plate (item
29) by turning counterclockwise. Inspect
the diaphragm (item 17) for cuts,
punctures, abrasive wear or chemical
attack. Replace the diaphragms if
necessary.

Step #4:

Installing the diaphragms.

Push the threaded stud of the outer

diaphragm plate through the center hole
of the diaphragm. Thread the inner plate
clockwise onto the stud.

Use one of the

two methods for holding the inner
diaphragm plate that was described in
prior note in step #3.

Use a torque wrench

to tighten the diaphragm assembly
together to 50 ft. lbs. (67.79 Newton
meters). Allow a minimum of 15 minutes
to elapse after torquing, then re-torque
the assembly to compensate for stress
relaxation in the clamped assembly.

Step #5:

Installing the diaphragm

assemblies to the pump.

Make sure the bumper (item 6) is

installed over the diaphragm rod.

Thread the stud of the one diaphragm

assembly clockwise into the tapped hole
at the end of the diaphragm rod (item
32) until the inner diaphragm plate is flush
to the end of the rod. Insert rod into
pump.

Align the bolt holes in the diaphragm

with the bolt pattern in the inner chamber
(item 15).

Fasten the outer chamber (item 14)

to the pump, using the capscrews (items
9), and hex nuts.

On the opposite side of the pump,

pull the diaphragm rod out as far as
possible. Make sure the bumper (item
6) is installed over the diaphragm rod.

Thread the stud of the remaining

diaphragm assembly clockwise into the
tapped hole at the end of the diaphragm
rod (item 32) as far as possible and still
allow for alignment of the bolt holes in
the diaphragm with the bolt pattern in
the inner chamber (item 15).

Fasten the remaining outer chamber

(item 14) to the pump, using the
capscrews (items 9), and hex nuts.

Step #6:

Re-install the manifolds to

the pump, using the capscrews (items
10), hex nuts and flat washers.

Read these instructions
completely, before in-
stallation and start-up. It
is the responsibility of
the purchaser to retain

this manual for reference. Failure to
comply with the recommendations stated
in this manual will damage the pump, and
void factory warranty.

IMPORTANT

The pump is now ready to be

re-installed, connected and returned to
operation.

OVERLAY DIAPHRAGM SERVICING

The overlay diaphragm (item 16)