Sandpiper S07 Manuel d'utilisateur télécharger pdf (Page 28)

s07nmdl1sm-rev0614 Models S07 Non-Metallic Page 26

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 composite

repair parts drawing, and the diaphragm

servicing illustration.

Using a 1/2" wrench or socket,

remove the 16 capscrews (items 9 &

10), and nuts that fasten the elbows

(items 16) to the outer chambers

(items 13). Remove the elbows with the

manifolds and spacers attached.

Step #2: Removing the outer

chambers.

Using a 1/2" wrench or socket,

remove the 16 capscrews (items

9 and 11), and nuts that fasten the

outer chambers, diaphragms, and

intermediate bracket (item 4) together.

Step #3: Removing the diaphragm

assemblies.

Use a 3/4" wrench or six pointed

socket to remove the diaphragm

assemblies (outer plate, diaphragm,

and inner plate) from the diaphragm rod

(item 30) by turning counterclockwise.

Insert a 6-32 set screw into the

smaller tapped hole in the inner

diaphragm plate (item 26). Insert

the protruding stud and the 6-32

fastener loosely into a vise. Use a

3/4" wrench or socket to remove the

outer diaphragm plate (item 25) by

turning counterclockwise. Inspect the

diaphragm (item 14) 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 a

torque wrench to tighten the diaphragm

assembly together to 90 in lbs.

(10.17 Newton meters) 120 in lbs

Santoprene (13.56 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 30) until the inner diaphragm plate

is ush to the end of the rod. Insert rod

into pump.

Align the bolt holes in the diaphragm

with the bolt pattern in the intermediate

bracket (item 4). Make sure the molded

directional arrows on the diaphragm

point vertically.

Fasten the outer chamber (item 13)

to the pump, using the capscrews (items

9 & 11), hex nuts and at washers.

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 30) as far as possible and still

allow for alignment of the bolt holes

in the diaphragm with the bolt pattern

in the inner chamber. The molded

directional arrows on the diaphragm

must point vertically.

Fasten the remaining outer chamber

(item 13) to the pump, using the

capscrews (items 9 and 11) and hex

nuts.

Step #6: Re-install the elbow/

spacer/manifold assemblies to the

pump, using the capscrews (items 9 &

10) and hex nuts.

The pump is now ready to be

re-installed, connected and returned to

operation.

OVERLAY DIAPHRAGM SERVICING

The PTFE overlay diaphragm

(item 15) is designed to fit snugly

over the exterior of the standard TPE

diaphragm (item 14).

The molded directional arrows

on the overlay diaphragm must point

vertically.

Follow the same procedures

described for the standard diaphragm

for removal and installation.

Follow the same procedures

described for the standard diaphragm

for removal and installation. Note:

The One-Piece Bonded diaphragm is

installed in the direction as shown in the

lower right illustration above.

Read these

instructions

completely, before

installation 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

ONE PIECE DIAPHRAGM

SERVICING (Bonded PTFE with

integral plate)

The One Piece diaphragm has a

threaded stud installed in the integral

plate at the factory. The inner diaphragm

plate has a through hole instead of a

threaded hole.

Place the inner plate over the

diaphragm stud and thread the rst

diaphragm / inner plate onto the

diaphragm rod only until the inner plate

contacts the rod. Do not tighten.

A small amount of grease may be

applied between the inner plate and the

diaphragm to facilitate assembly.

Insert the diaphragm / rod assembly

into the pump and install the outer

chamber. Turn the pump over and

thread the second diaphragm / inner

plate onto the diaphragm rod. Turn the

diaphragm until the inner plate contacts

the rod and hand tighten the assembly.

Continue tightening until the bolt holes

align with the inner chamber holes. DO

NOT LEAVE THE ASSEMBLY LOOSE.

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Sandpiper S07 Manuel d'utilisateur Page 28

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