All-Flo SB-10-X44 1 All-PũR - Manual

7. Take one diaphragm and with the curved side of the inner diaphragm plate
facing the diaphragm assemble onto outer diaphragm plate stud and then screw
assembly into diaphragm rod. Push diaphragm rod to the opposite side of the
intermediate and add the opposite diaphragm assembly. Tighten the outer
diaphragm plates to 165 in-lbs (18,64 NM) of torque.
8. Position outer diaphragm chambers onto intermediate making sure that witness
lines are matching.
NOTE: If air valve has been removed, proper orientation of air system with
fluid chambers must be observed. The bottom of the intermediate has the
smaller hook shaped air passage slot on the air valve mounting face and
the outer chamber check ball cavity should be pointing downward.
9. Replace all external fasteners and tighten to final torque requirement after pump
is completely assembled.
10. Position the manifolds making sure of the proper orientation in relation to the air
valve for your application. Also make sure that the manifold o-rings do not shift
from their grooves during reassembly. Tighten all external fasteners to final torque
requirement after pump is completely assembled.
EXTERNAL FASTENER TORQUE REQUIREMENTS
NOTE: When reassembling loosely tighten all external fasteners adjusting
and aligning and gradually, in an alternating fashion, tighten to torque re-
quirements listed below.
AIR VALVE CAP SCREWS 40 in-lbs (4,52 NM)
MANIFOLD BOLTS, 80-90 in-lbs (9,04-10,17 NM)
OUTER CHAMBER CAP SCREWS, 75-85 in-lbs (8,48-9,61 NM)
Note: Always torque the chamber bolts prior to the manifold bolts.
AIR VALVE MAINTENANCE
11. To evaluate air valve components, remove the four cap screws (11), washers,
(25, 10) and nuts (17) from the air valve body (7). The shuttle plate (5) and
shuttle (6) may be inspected by removing them from their location in the slot in
the back of the air valve. Inspect for scratches or surface irregularities. Replace
if necessary. Remove the plug (1) at the bottom of the air valve. Next push the air
valve spool (2) out of the air valve body. Gently reach in and pull lip seals (43) out
of inside bore of the air valve body. Check for cracks, splitting or scratches. Clean
components if replacement is not necessary. Inspect plug o-ring (44) for any dam-
age and replace if necessary and reposition o-ring into groove in air valve body.
NOTE: Make sure that the open sides of the two lip seals face each other
when reassembling air valve. Lube all components with suggested main-
tenance grease as an aid in reassembly.
12. Reinsert air valve spool inside of air valve body. Place shuttle on middle rib of air
valve spool through the square slot in back of air valve. Lubricate side of plate
that faces the shuttle and reposition valve plate over shuttle. Press the valve
plug into air valve body, chamfered end first.
13. Check that gasket (4) is not cracked. If damaged replace.
14. After gasket is pressed back into position align air valve onto intermediate and
reinsert the four cap screws with lock washer and flat washers. Apply 40 in-lbs
(4,52 NM) of torque to fasteners.
U.S. Patent Number 5232352
1˝
PERFORMANCE PLUS
METALLIC MAINTENANCE MANUAL
CHECK VALVE AND O-RING MAINTENANCE
1. Flush and neutralize the pump to be certain all corrosives or hazardous materials
are removed prior to any maintenance. This procedure should always be
followed when returning pumps for factory service also.
2. Remove nuts (18) and washers (12) and (9) from bolts (16) in both the discharge
and suctions manifolds. Suction check valve seats and check balls (26, 27) are
located inside of the bottom of the outer chamber (28). Gently remove and
inspect for excessive wear, pitting or other signs of degradation. Inspect valve
seat and manifold o-rings (38). Replace if necessary. Discharge check valves
are located inside of the bottom of the discharge manifolds (32). Repeat proce-
dure for inspection of discharge check valves and o-rings. When re-assembling,
the check ball should fit within the ball cavity of the chamber and discharge
manifold. Assemble the valve seats into position with the curved portion facing
the ball. Lightly tighten fasteners. Tighten all external fasteners to final torque
requirement after pump is completely assembled.
NOTE: When using pumps built with PTFE o-rings always replace with new
PTFE o-rings, since the original o-rings may not reseal the pump.
DIAPHRAGM AND PILOT SLEEVE ASSEMBLY MAINTENANCE
4. To inspect diaphragms remove nuts (18) and washers (12) and (9) from bolts
(16) and remove washers (12) from bolts (3) from the outer pumping chambers
(28). If replacement is necessary due to abrasion or rupture unscrew the outer
diaphragm plates (29). Models that are built with PTFE elastomers will have a
PTFE overlay (30) that faces the outer pumping chamber and a back-up
diaphragm (31) on the air side of pump. Pumps without PTFE will contain only
the back-up diaphragms.
5. If there has been a diaphragm rupture and corrosive or viscous fluid has entered
the air side of pump the complete air system should be inspected. After remov-
ing diaphragms and inner diaphragm plate (33), the pilot sleeve assembly
(14, 40, 42, 45-47) and diaphragm rod assembly (13, 15) may be removed by
removing the retaining plates (41) and push the entire unit out through the bore
in the intermediate (34). Diaphragm rod assembly must be unscrewed to remove
pilot sleeve.
NOTE: To aid in reassembly use a non-synthetic, petroleum based lubricating
grease without EP additives. Carleton-Stuart MagnaLube G is recommended.
6. Clean or replace any components that have excessive wear, dirt build-up, or
chemical attack. Lube all components prior to reassembling. Reassemble pilot
sleeve spacers, o-rings and lip seals (40) within bore of intermediate. Make sure
that the open side of the lip seals is facing outward toward the diaphragms. Also
make sure that the end pilot spacers (14) are at the end on either side of the pilot
sleeve assembly and all inner spacers (47) are separated by o-rings. Next care-
fully insert the diaphragm rod assembly with pilot sleeve inside the assembly in
the bore. Reattach retaining plates. Do not over tighten self-tapping screws (24).