PSG Wilden PS4 Saniflo Hygienic Series Instruction Manual

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Engineering
Operation &
Maintenance
Where Innovation Flows
PS4
Sanio™ Hygienic Series
Metal Pumps

SECTION 1 CAUTIONS—READ FIRST! ..............................................1
SECTION 2 WILDEN PUMP DESIGNATION SYSTEM.................................2
SECTION 3 HOW IT WORKS—PUMP & AIR DISTRIBUTION SYSTEM ................3
SECTION 4 DIMENSIONAL DRAWINGS .............................................4
SECTION 5 PERFORMANCE
Rubber-Fitted.............................................................5
EZ-InstallTPE-Fitted .......................................................5
Full-Stroke PTFE Fitted .....................................................6
Full-Stroke Integral Piston Diaphragm-Fitted...................................6
PTFE Integral Piston Diaphragm-Fitted........................................7
Suction-Lift Curves ........................................................8
SECTION 6 SUGGESTED INSTALLATION, OPERATION & TROUBLESHOOTING........9
SECTION 7 DISASSEMBLY / ASSEMBLY ...........................................12
Wilgard™ Diaphragm Sensor ..............................................15
Air Valve / Center Section Disassembly ......................................17
Reassembly Hints &Tips ..................................................21
SECTION 8 CLEAN IN PLACE - CIP ................................................22
SECTION 9 EXPLODED VIEW & PARTS LISTING
PS4 Saniflo™ HS ........................................................24
PS4 Saniflo™ HS 1935/2004/EC.............................................28
SECTION 10 ELASTOMER OPTIONS.................................................31
TABLE OF CONTENTS

Section 1
CAUTIONS—READ FIRST!
WIL-12610-E-01 1 WILDEN PUMP & ENGINEERING, LLC
CAUTION: Do not apply compressed air to the
exhaust port — pump will not function.
CAUTION: Do not over-lubricate air supply —
excess lubrication will reduce pump performance.
Pump is pre-lubed.
TEMPERATURE LIMITS:
Polypropylene 0°C to 79°C 32°F to 175°F
PVDF –12°C to 107°C 10°F to 225°F
PFA 7°C to 107°C 20°F to 225°F
Neoprene –18°C to 93°C 0°F to 200°F
Buna-N –12°C to 82°C 10°F to 180°F
EPDM –51°C to 138°C –60°F to 280°F
Viton®FKM –40°C to 177°C –40°F to 350°F
Wil-Flex™ –40°C to 107°C –40°F to 225°F
Saniflex™ –29°C to 104°C –20°F to 220°F
Polyurethane –12°C to 66°C 10°F to 150°F
Polytetrafluoroethylene (PTFE)
14°C to 104°C 40°F to 220°F
Nylon –18°C to 93°C 0°F to 200°F
Acetal –29°C to 82°C –20°F to 180°F
SIPD PTFE with Neoprene-backed 4°C to 104°C 40°F to 220°F
SIPD PTFE with EPDM-backed 4°C to 137°C 40°F to 280°F
Geolast®–40°C to 82°C –40°F to 180°F
NOTE: Not all materials are available for all models.
Refer to Section 2 for material options for your pump.
CAUTION: When choosing pump materials, be
sure to check the temperature limits for all wetted
components. Example: Viton®has a maximum
limit of 177°C (350°F), but polypropylene has a
maximum limit of only 79°C (175°F).
CAUTION: Maximum temperature limits are
based upon mechanical stress only. Certain
chemicals will significantly reduce maximum
safe operating temperatures. Consult Chemical
Resistance Guide for chemical compatibility and
temperature limits.
WARNING: Prevent static sparking. If static
sparking occurs, fire or explosion could result.
Pump, valves and containers must be grounded
to a proper grounding point when handling
flammable fluids and whenever discharge of
static electricity is a hazard.
CAUTION: Do not exceed 8.6 bar (125 psig) air
supply pressure.
CAUTION: The process fluid and cleaning fluids
must be chemically compatible with all wetted
pump components. Consult Chemical Resistance
Guide.
CAUTION: Do not exceed 82°C (180°F) air inlet
temperature for Pro-Flo®SHIFT models.
CAUTION: Pumps should be thoroughly flushed
before installing into process lines. FDA- and
USDA-approved pumps should be cleaned and/
or sanitized before being used.
CAUTION: Always wear safety glasses when
operating pump. If diaphragm rupture occurs,
material being pumped may be forced out air exhaust.
CAUTION: Before any maintenance or repair is
attempted, the compressed air line to the pump
should be disconnected and all air pressure
allowed to bleed from pump. Disconnect all
intake, discharge and air lines. Drain the pump
by turning it upside down and allowing any fluid
to flow into a suitable container.
CAUTION: Blow out air line for 10 to 20 seconds
before attaching to pump to make sure all
pipeline debris is clear. Use an in-line air filter.
A 5μ (micron) air filter is recommended.
NOTE: When installing PTFE diaphragms, it is
important to tighten outer pistons simultaneously
(turning in opposite directions) to ensure tight
fit. When installing IPDs and FSIPDs, these
diaphragms cannot be over-tightened by hand;
do not use tools when tightening. (See torque
specifications in Section 7.)
NOTE: Some PTFE-fitted pumps come standard
from the factory with expanded PTFE gaskets
installed in the diaphragm bead of the liquid
chamber. PTFE gaskets cannot be re-used.
NOTE: Before starting disassembly, mark a line
from each liquid chamber to its corresponding air
chamber. This line will assist in proper alignment
during reassembly.
CAUTION: Pro-Flo®SHIFT pumps are available in
both submersible and non-submersible options.
Do not use standard models in submersible
applications.
CAUTION: Tighten all hardware prior to installation.
1
4°C to 149°C (40°F to 300°F) - 13 mm (1/2") and 25 mm (1") models only.

WILDEN PUMP & ENGINEERING, LLC 2 WIL-12610-E-01
Section 2
WILDEN PUMP DESIGNATION SYSTEM
PS4 SANIFLO™
HYGIENIC SERIES
38 mm (1-1/2") Pump
Maximum Flow Rate:
357 lpm (94.4 gpm)
LEGEND
PS4 / XXXXX / XXX /XX /XX /XXXX
GASKETS
MODEL
VALVE OPTION
DIAPHRAGMS
AIR VALVE
AIR CHAMBERS
CENTER SECTION
WETTED PARTS & OUTER PISTON
SPECIALTY
CODE
(if applicable)
SPECIALTY CODES
MATERIAL CODES
MODEL
PS4 = 38 mm (1-1/2")
XPS4 = 38 mm (1-1/2") ATEX
WETTED PARTS/
OUTER PISTON
SS = 316L STAINLESS STEEL
SZ = 316L STAINLESS STEEL/
NO PISTON
CENTER BLOCK
N = NICKEL-PLATED ALUMINUM
S = 316 STAINLESS STEEL
AIR CHAMBERS
N = NICKEL-PLATED ALUMINUM
S = 316 STAINLESS STEEL
AIR VALVE
N = NICKEL-PLATED ALUMINUM
S = 316 STAINLESS STEEL
DIAPHRAGMS
FBS = SANITARY BUNA1,5
(Two Yellow Dots)
FES = SANITARY EPDM1,5
(Two Blue Dots)
FSS = SANIFLEX™
1,5
FWL = FULL-STROKE SANITARY
WIL-FLEX™ IPD1,3,4,5
FWS = SANITARY WIL-FLEX™,
EZ-INSTALL [Santoprene®
(Two Orange Dots)]1,5
LEL = PTFE IPD1,2,3,4,5
TSS = FULL-STROKE PTFE
w/SANIFLEX™ BACK-UP1,2,5
TWS = FULL-STROKE PTFE
w/WIL-FLEX™ BACK-UP1,2,5
ZSS = SANIFLEX™, EZ-INSTALL1,3
BALL VALVES, MUSHROOM CHECK
FB = SANITARY BUNA1,3,4,5
(Red Dot)
FE = SANITARY EPDM1,3,4,5
(Green Dot)
FS = SANIFLEX™
1,3,4,5
FW = SANITARY WIL-FLEX™
[Santoprene®(Two Orange
Dots)] 1,3,4,5
TF = PTFE1,2,3,4,5
TM = PTFE MUSHROOM
CHECK1,2,5
MANIFOLD GASKET
FB = SANITARY BUNA-N1,3,4,5
(Red Dot)
FE = SANITARY EPDM1,3,4,5
(Green Dot)
FV = SANITARY VITON®1,3,4,5
(One White/One Yellow Dot)
TF = PTFE1,2,3,4,5
NOTE:
1 Meets Requirements of FDA CFR21.177
2 Meets Requirements of USPClass VI
3 Required for EHEDG Certification
4 Required for 3-A Certification
5 Meets Requirements of 1935/2004/EC
0770 Saniflo HS
0771 Saniflo HS, w/Swivel Stand
0772 Saniflo HS, Wil-Gard 110V
0773 Saniflo HS, Wil-Gard 220V
0774 Saniflo HS, Wil-Gard 110V, w/Swivel Stand
0775 Saniflo HS, Wil-Gard 220V, w/Swivel Stand
0778 Saniflo HS, DIN Connection
0779 Saniflo HS, w/Swivel Stand DIN Connection
0780 Saniflo HS, Wil-Gard 110V DIN Connection
0781 Saniflo HS, Wil-Gard 220V DIN Connection
0782 Saniflo HS, Wil-Gard 110V, w/Swivel Stand DIN Connection
0783 Saniflo HS, Wil-Gard 220V, w/Swivel Stand DIN Connection
0784 Saniflo HS, SMS Connection
0785 Saniflo HS, w/Swivel Stand SMS Connection
0786 Saniflo HS, Wil-Gard 110V SMS Connection
0787 Saniflo HS, Wil-Gard 220V SMS Connection
0788 Saniflo HS, Wil-Gard 110V, w/Swivel Stand SMS Connection
0789 Saniflo HS, Wil-Gard 220V, w/Swivel Stand SMS Connection
0770E Saniflo HS (1935/2004/EC)
0771E Saniflo HS, w/Swivel Stand (1935/2004/EC)
0772E Saniflo HS, Wil-Gard 110V (1935/2004/EC)
0773E Saniflo HS, Wil-Gard 220V (1935/2004/EC)
0774E Saniflo HS, Wil-Gard 110V, w/Swivel Stand (1935/2004/EC)
0775E Saniflo HS, Wil-Gard 220V, w/Swivel Stand (1935/2004/EC)
0778E Saniflo HS, DIN Connection (1935/2004/EC)
0779E Saniflo HS, w/Swivel Stand DIN Connection (1935/2004/EC)
0780E Saniflo HS, Wil-Gard 110V DIN Connection (1935/2004/EC)
0781E Saniflo HS, Wil-Gard 220V DIN Connection (1935/2004/EC)
0782E Saniflo HS, Wil-Gard 110V, w/Swivel Stand DIN Connection (1935/2004/EC)
0783E Saniflo HS, Wil-Gard 220V, w/Swivel Stand DIN Connection (1935/2004/EC)
0784E Saniflo HS, SMS Connection (1935/2004/EC)
0785E Saniflo HS, w/Swivel Stand SMS Connection (1935/2004/EC)
0786E Saniflo HS, Wil-Gard 110V SMS Connection (1935/2004/EC)
0787E Saniflo HS, Wil-Gard 220V SMS Connection (1935/2004/EC)
0788E Saniflo HS, Wil-Gard 110V, w/Swivel Stand SMS Connection (1935/2004/EC)
0789E Saniflo HS, Wil-Gard 220V, w/Swivel Stand SMS Connection (1935/2004/EC)
NOTE: MOST ELASTOMERIC MATERIALS USE COLORED DOTS FOR IDENTIFICATION.
Viton®is a registered trademark of DuPont Dow Elastomers.

WIL-12610-E-01 3 WILDEN PUMP & ENGINEERING, LLC
Section 3
HOW IT WORKS—PUMP
The Wilden diaphragm pump is an air-operated, positive displacement, self-priming pump. These drawings show flow pattern
through the pump upon its initial stroke. It is assumed the pump has no fluid in it prior to its initial stroke.
FIGURE 1 The air valve directs pressurized
air to the back side of diaphragm A. The
compressed air is applied directly to the
liquid column separated by elastomeric
diaphragms. The diaphragm acts as
a separation membrane between the
compressed air and liquid; a balanced
load removes mechanical stress from the
diaphragm. The compressed air moves
the diaphragm away from the center
of the pump. The opposite diaphragm
is pulled in by the shaft connected to
the pressurized diaphragm. Diaphragm
B is on its suction stroke; air behind
the diaphragm has been forced out to
atmosphere through the exhaust port of
the pump. The movement of diaphragm
B toward the center of the pump creates
a vacuum within chamber B. Atmospheric
pressure forces fluid into the inlet
manifold forcing the inlet valve ball off its
seat. Liquid is free to move past the inlet
valve ball and fill the liquid chamber (see
shaded area).
FIGURE 2 When the pressurized diaphragm,
diaphragm A, reaches the limit of its discharge
stroke, the air valve redirects pressurized
air to the back side of diaphragm B. The
pressurized air forces diaphragm B away
from the center while pulling diaphragm A
to the center. Diaphragm B is now on its
discharge stroke. Diaphragm B forces the
inlet valve ball onto its seat due to the
hydraulic forces developed in the liquid
chamber and manifold of the pump. These
same hydraulic forces lift the discharge
valve ball off its seat, while the opposite
discharge valve ball is forced onto its seat,
forcing fluid to flow through the pump
discharge. The movement of diaphragm A
toward the center of the pump creates a
vacuum within liquid chamber A. Atmos-
pheric pressure forces fluid into the inlet
manifold of the pump. The inlet valve ball
is forced off its seat allowing the fluid being
pumped to fill the liquid chamber.
FIGURE 3 At completion of the stroke,
the air valve again redirects air to the
back side of diaphragm A, which starts
diaphragm B on its exhaust stroke. As
the pump reaches its original starting
point, each diaphragm has gone through
one exhaust and one discharge stroke.
This constitutes one complete pumping
cycle. The pump may take several cycles
to completely prime depending on the
conditions of the application.
OUTLET
CLOSED
CLOSEDOPEN
OPEN
INLET
BA
OUTLET
OPEN
OPENCLOSED
CLOSED
INLET
BA
OUTLET
CLOSED
CLOSEDOPEN
OPEN
INLET
BA

WILDEN PUMP & ENGINEERING, LLC 4 WIL-12610-E-01
Section 4
DIMENSIONAL DRAWINGS
PS4 Saniflo™ HS Vertically-Mounted, Center-Ported
with Ball/Mushroom Valve, Fixed Stand
PS4 Saniflo™ HS Vertically-Mounted, Center-Ported
with Ball/Mushroom Valve, Swivel Stand
DIMENSIONS
ITEM METRIC (mm) STANDARD (inch)
A 440 17.5
B 190 7.5
C 531 20.9
D 538 21.2
E 812 32.0
F 864 34.0
G 45 1.8
H 47 1.9
J 522 20.5
K 509 20.0
L 721 28.4
M 709 27.9
N 520 20.5
P 400 15.8
R 349 13.8
S 394 15.5
T 432 17.0
U Ø10 ø0.4
LW0243 REV. B
DIMENSIONS
ITEM METRIC (mm) STANDARD (inch)
A 440 17.5
B 93 3.7
C 435 17.1
D 441 17.4
E 716 28.2
F 767 30.2
G 45 1.8
H 47 1.9
J 386 15.2
K 374 14.7
L 586 23.1
M 573 22.6
N 423 16.7
P 400 15.8
R 349 13.8
S 318 12.5
T 356 14.0
U Ø10 ø0.4
LW0242 REV. B

Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump's performance curve.
Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump's performance curve.
PS4 SANIFLO™ HS
RUBBER-FITTED
PS4 SANIFLO™ HS
EZ-INSTALL TPE-FITTED
Height ..................................767 mm (30.2")
Width ................................... 440 mm (17.5")
Depth ....... Aluminum ADS 386 mm (15.2")
Stainless Steel ADS 374 mm (14.7")
Ship Weight .......................... 51 kg (112 lbs)
Air Inlet ....................................19 mm (3/4")
Inlet ...................................... 38 mm (1-1/2")
Outlet ................................... 38 mm (1-1/2")
Suction Lift ....................... 4.7 m Dry (15.5')
9.0 m Wet (29.5')
Disp. per Stroke ..................1.0 L (0.27 gal)1
Max. Flow Rate .............. 348 lpm (92 gpm)
Max. Size Solids...........................................
Mushroom Valve 6.4 mm (1/4")
Ball Valve 12.7 mm (1/2")
Surface Finish .............. Ra 0.8 μm (32 μ-in)
1Displacement per stroke was calculated at
4.8 bar (70 psig) air inlet pressure against a
2 bar (30 psig) head pressure.
Example: To pump 129 lpm (34 gpm)
against a discharge head of 5.6 bar (80 psig)
requires 7.0 bar (100 psig) and 58 Nm
3
/h
(34 scfm) air consumption.
Caution: Do not exceed 8.6 bar (125 psig)
air supply pressure.
Height ..................................767 mm (30.2")
Width ................................... 440 mm (17.5")
Depth ....... Aluminum ADS 386 mm (15.2")
Stainless Steel ADS 374 mm (14.7")
Ship Weight .......................... 51 kg (112 lbs)
Air Inlet ....................................19 mm (3/4")
Inlet ...................................... 38 mm (1-1/2")
Outlet ................................... 38 mm (1-1/2")
Suction Lift ........................ 5.3 m Dry (17.3')
9.0 m Wet (29.5')
Disp. per Stroke ..................1.0 L (0.27 gal)1
Max. Flow Rate .............. 357 lpm (94 gpm)
Max. Size Solids...........................................
Mushroom Valve 6.4 mm (1/4")
Ball Valve 12.7 mm (1/2")
Surface Finish .............. Ra 0.8 μm (32 μ-in)
1Displacement per stroke was calculated at
4.8 bar (70 psig) air inlet pressure against a
2 bar (30 psig) head pressure.
Example: To pump 261 lpm (69 gpm)
against a discharge head of 2.1 bar (30 psig)
requires 5.5 bar (80 psig) and 71 Nm
3
/h
(42 scfm) air consumption.
Caution: Do not exceed 8.6 bar (125 psig)
air supply pressure.
WIL-12610-E-01 5 WILDEN PUMP & ENGINEERING, LLC
Section 5
PERFORMANCE

Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump's performance curve.
Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump's performance curve.
PS4 SANIFLO™ HS
FULL-STROKE PTFE-FITTED
PS4 SANIFLO™ HS
FULL-STROKE INTEGRAL
PISTON DIAPHRAGM-FITTED
Height ..................................767 mm (30.2")
Width ................................... 440 mm (17.5")
Depth ....... Aluminum ADS 386 mm (15.2")
Stainless Steel ADS 374 mm (14.7")
Ship Weight .......................... 51 kg (112 lbs)
Air Inlet ....................................19 mm (3/4")
Inlet ...................................... 38 mm (1-1/2")
Outlet ................................... 38 mm (1-1/2")
Suction Lift ........................ 5.4 m Dry (17.6')
9.0 m Wet (29.5')
Disp. per Stroke ................. .09 L (0.25 gal)1
Max. Flow Rate .............. 357 lpm (94 gpm)
Max. Size Solids...........................................
Mushroom Valve 6.4 mm (1/4")
Ball Valve 12.7 mm (1/2")
Surface Finish .............. Ra 0.8 μm (32 μ-in)
1Displacement per stroke was calculated at
4.8 bar (70 psig) air inlet pressure against a
2 bar (30 psig) head pressure.
Example: To pump 182 lpm (48 gpm) against a
discharge head of 2.2 bar (32 psig) requires 4.2 bar
(60 psig) and 51 Nm
3
/h (30 scfm) air consumption.
Caution: Do not exceed 8.6 bar (125 psig)
air supply pressure.
Height ..................................767 mm (30.2")
Width ................................... 440 mm (17.5")
Depth ....... Aluminum ADS 386 mm (15.2")
Stainless Steel ADS 374 mm (14.7")
Ship Weight .......................... 51 kg (112 lbs)
Air Inlet ....................................19 mm (3/4")
Inlet ...................................... 38 mm (1-1/2")
Outlet ................................... 38 mm (1-1/2")
Suction Lift ....................... 4.8 m Dry (15.9')
9.0 m Wet (29.5')
Disp. per Stroke ..................1.0 L (0.26 gal)1
Max. Flow Rate .............. 348 lpm (92 gpm)
Max. Size Solids...........................................
Mushroom Valve 6.4 mm (1/4")
Ball Valve 12.7 mm (1/2")
Surface Finish .............. Ra 0.8 μm (32 μ-in)
1Displacement per stroke was calculated at
4.8 bar (70 psig) air inlet pressure against a
2 bar (30 psig) head pressure.
Example: To pump 272 lpm (72 gpm) against a
discharge head of 2.1 bar (30 psig) requires 7.0 bar
(100 psig) and 100 Nm
3
/h (59 scfm) air consumption.
Caution: Do not exceed 8.6 bar (125 psig)
air supply pressure.
WILDEN PUMP & ENGINEERING, LLC 6 WIL-12610-E-01
PERFORMANCE
20 40 60 80 100
[76] [151] [227] [303] [379]
40 [68]
50 [85]
10 [17] 20 [34]
30 [51]

PS4 SANIFLO™ HS
PTFE INTEGRAL PISTON
DIAPHRAGM-FITTED
Flow rates indicated on chart were determined by pumping water.
For optimum life and performance, pumps should be specified so that daily operation
parameters will fall in the center of the pump's performance curve.
Height ..................................767 mm (30.2")
Width ................................... 440 mm (17.5")
Depth ....... Aluminum ADS 386 mm (15.2")
Stainless Steel ADS 374 mm (14.7")
Ship Weight .......................... 51 kg (112 lbs)
Air Inlet ....................................19 mm (3/4")
Inlet ...................................... 38 mm (1-1/2")
Outlet ................................... 38 mm (1-1/2")
Suction Lift ....................... 3.3 m Dry (10.8')
9.0 m Wet (29.5')
Disp. per Stroke ................. .05 L (0.14 gal)1
Max. Flow Rate .............. 295 lpm (78 gpm)
Max. Size Solids...........................................
Mushroom Valve 6.4 mm (1/4")
Ball Valve 12.7 mm (1/2")
Surface Finish .............. Ra 0.8 μm (32 μ-in)
1Displacement per stroke was calculated at
4.8 bar (70 psig) air inlet pressure against a
2 bar (30 psig) head pressure.
Example: To pump 1212 lpm (32 gpm)
against a discharge head of 2.8 bar (40 psig)
requires 4.2 bar (60 psig) and 48 Nm
3
/h
(28 scfm) air consumption.
Caution: Do not exceed 8.6 bar (125 psig)
air supply pressure.
WIL-12610-E-01 7 WILDEN PUMP & ENGINEERING, LLC
PERFORMANCE

PS4 SANIFLO™
HS SUCTION-LIFT
CAPABILITY
SUCTION-LIFT CURVES
Suction-lift curves are calibrated
for pumps operating at 305 m
(1,000') above sea level. This chart is
meant to be a guide only. There are
many variables that can affect your
pump’s operating characteristics.
The number of intake and discharge
elbows, viscosity of pumping fluid,
elevation (atmospheric pressure)
and pipe friction loss all affect the
amount of suction lift your pump
will attain.
WILDEN PUMP & ENGINEERING, LLC 8 WIL-12610-E-01

WIL-12610-E-01 9 WILDEN PUMP & ENGINEERING, LLC
Tools Required:
• Adjustable Wrench
• Vise equipped with
soft jaws (such as
plywood, plastic
or other suitable
material)
CAUTION: Before any maintenance or repair is attempted, the compressed air line
to the pump should be disconnected and all air pressure allowed to bleed from the
pump. Disconnect all intake, discharge and air lines. Drain the pump by turning it
upside down and allowing any fluid to flow into a suitable container. Be aware of
any hazardous effects of contact with your process fluid.
NOTE: The model photographed for these instructions incorporates PTFE
diaphragms.
Step 1
Prior to assembly, place alignment
marks on the liquid chambers and
air chambers to assist with proper
alignment during reassembly.
Step 2
Loosen the wing nut and remove
both discharge manifold clamp
bands.
Step 3
Remove the discharge manifold and
manifold gaskets.
Section 7
PUMP DISASSEMBLY
Section 7 Assembly / Disassembly

WILDEN PUMP & ENGINEERING, LLC 10 WIL-12610-E-01
PUMP DISASSEMBLYPUMP DISASSEMBLY
Step 4
Next, remove the clamp bands that
secure the ball valve housing to the
liquid chamber.
Step 5A
Next, remove the ball valve housing,
valve ball and gasket.
Step 5B
If your pump is fitted with a
mushroom valve, remove the
mushroom valve housing,
mushroom valve and gasket.
Step 6
Loosen the wing nut and remove
the inlet manifold clamp bands.
Step 7
Next, remove the clamp bands that
secure the ball valve housing to the
liquid chamber.
Step 8
Next, remove the ball valve
housing, valve ball and gasket from
liquid chamber. To ensure proper
alignment during reassembly of
manifold/liquid chamber interface,
turn off-set portion of valve
housing to the left or to the right.
This procedure works for the inlet
manifold and discharge manifold
connections.

WIL-12610-E-01 11 WILDEN PUMP & ENGINEERING, LLC
Step 10A
Next, remove the liquid chamber
from the center section assembly.
Step 10B
If your pump is fitted with an integral
piston diaphragm (IPD), when you
remove the liquid chamber you will
notice that there is no outer piston.
Step 11A
Using two (2) adjustable wrenches,
turning in the opposite direction,
loosen and remove one (1) of the
two (2) outer pistons.
Step 11B
If your pump is fitted with an IPD,
the procedure for removing the
diaphragm is slightly different.
In this case, simply grasp the
diaphragm in two locations and turn
in a counter-clockwise direction.
Step 12A
After loosening and removing
the outer piston, the remaining
diaphragm assembly and shaft can
be removed from the center section
assembly.
PUMP DISASSEMBLY
Step 9
Now the large clamp bands can be
removed. NOTE: Prior to assembly,
alignment marks should be placed
on the liquid chambers and air
chambers to assist with proper
alignment during reassembly.

WILDEN PUMP & ENGINEERING, LLC 12 WIL-12610-E-01
SWIVEL PUMP STAND OPTION
WIL-GARD™DIAPHRAGM SENSOR
Step 12B
If your pump is fitted with an IPD,
the procedure for removing the
diaphragm is the same.
WIL-GARD™DIAPHRAGM SENSOR
Step 1
After removing the inlet and
discharge manifold assemblies,
disconnect the Wil-Gard™ module
from the sensor wires.
Wil-Gard™ Diaphragm Sensor Removal
Step 2
Next, remove the large clamp bands
and the liquid chamber on either
side of the pump.
Step 3
TheWil-Gard™ sensor cables can be
easily removed from the diaphragm
assembly by simply pulling them
from between the primary and back-
up diaphragm.
PUMP DISASSEMBLY

WIL-12610-E-01 13 WILDEN PUMP & ENGINEERING, LLC
Step 1
The Wil-Gard™ sensor wires
must be installed between the
primary diaphragm and the back-
up diaphragm, on both sides
of the pump, at the six o’clock
position. They should be positioned
approximately half the distance
to the shaft from the edge of the
diaphragm.
Step 2
Prior to installing the liquid chamber,
and after positioning theWil-Gard™
sensor cable between the primary
and back-up diaphragms, run the
sensor cable along the diaphragm
bead but outside the pump. Now
install the liquid chamber and large
clamp band.
Step 3
When installing the liquid chamber
and large clamp band, route the Wil-
Gard™ sensor cable to the inside of
the large clamp band fastener. Next,
reconnect the Wil-Gard™ module.
NOTE: Use caution to ensure that
the sensor wires are not damaged
or pinched by the clamp band.
Wil-Gard™ Diaphragm Sensor Installation
SWIVEL PUMP STAND OPTION
Draining Pump Contents
To drain the pump of its contents, first disconnect the inlet
and discharge connections. Next, loosen, but do not remove,
the anti-rotation screw by turning counterclockwise two
turns. After loosening the anti-rotation bolt, rotate pump
180°. This will allow the contents within the pump to flow out
of the discharge and into a suitable container. After draining
the pump, rotate the pump back to the upright position and
tighten the anti-rotation bolt.
Removing Pump From Swivel Pump Stand
Saniflo™ HS pumps are very heavy. It is recommended that
the pump be disassembled while attached to the stand. If it
is necessary to remove the pump from the stand while fully
assembled, use a hoist or mechanical means to support the
pump as it is removed from the stand.
To remove your Saniflo™ HS pump from the swivel pump
stand, first loosen the anti-rotation bolt (item #1) by turning
counter-clockwise. Next, ensure the entire pump weight is
supported by hoist and loosen the locking pin (item #2) by
turning counter-clockwise. This will allow the pump to be
removed from the stand.
CAUTION: Removal of the locking pin (item #2) will allow the
pump to fall from the stand, potentially causing injury to the
operator or personnel in the immediate area. Never operate
or store the pump without the locking pin (item #2) in place
and properly torqued.
NOTE: The center
block-to-bushing bolts
(item #4) attach the
center block mounting
bushing (item #3) to
the center block (not
shown). These bolts
do not need to be
removed to remove
the pump from the
stand.
NOTE: Torque values
are located in Section
7 of this manual.
NOTE: Item 5 and Item
6 are required for 3-A
Certification.
For ease of maintenance and cleaning, Wilden offers an optional swivel pump stand. The swivel pump stand allows the
pump to be drained by rotating the pump so that the fluid can flow out of the discharge and into a suitable container.
2
3
4
5
6
1
WIL-GARD™DIAPHRAGM SENSOR
Figure 1

WILDEN PUMP & ENGINEERING, LLC 14 WIL-12610-E-01
AIR VALVE / CENTER SECTION DISASSEMBLY
AIR VALVE / CENTER SECTION DISASSEMBLY
Tools Required:
• Appropriate-sized
Wrench
• Snap-Ring Pliers
• O-Ring Pick
CAUTION: Before any maintenance or repair is attempted, the compressed air line
to the pump should be disconnected and all air pressure allowed to bleed from the
pump. Disconnect all intake, discharge and air lines. Drain the pump by turning it
upside down and allowing any fluid to flow into a suitable container. Be aware of
hazardous effects of contact with your process fluid.
The Wilden Pro-Flo®SHIFT metal pumps utilize a revolutionary Pro-Flo® SHIFT air
distribution system. Proprietary composite seals reduce the coefficient of friction
and allow the Pro-Flo®SHIFT to run lube-free. Constructed of aluminum, the Pro-
Flo®SHIFT air distribution system is designed to perform in on/off, non-freezing,
non-stalling, tough duty applications.
Step 1
Using a pair of snap-ring pliers,
remove the snap-ring from pilot
sleeve.
Step 2
Using an O-ring pick, remove O-ring
from modulator spool.
Step 3
Using the appropriate-sized wrench,
loosen and remove the fasteners
that attach the air chamber to center
section.

WIL-12610-E-01 15 WILDEN PUMP & ENGINEERING, LLC
AIR VALVE / CENTER SECTION DISASSEMBLY
Step 4
Lift away air chamber from center
section and remove center block
gasket. Replace gasket if necessary.
Step 5
Turn assembly over and remove the
pilot spool sleeve from the center
section.
Step 6
Using an O-ring pick, gently remove
the O-ring from the opposite side of
the dimpled end of the pilot spool.
Step 8
Remove modulator spool from
center section. Check for wear to
spool or O-rings and replace if
necessary.
Step 9
Using the appropriate-sized wrench,
loosen the fasteners and lift away
remaining air chamber and center
block gasket from center section.
Replace gasket if necessary.
Step 7
Gently
remove
the
pilot
spool from the sleeve and inspect
for nicks, wear or damage. Replace
the pilot spool assembly or sleeve
O-rings if necessary. During
reassembly, never insert the
dimpled end of the pilot spool first,
this will damage the single urethane
O-ring by passing it over the ports
in the pilot sleeve.
NOTE: Seals should not be removed
from the assembly. Seals are not
sold separately.

WILDEN PUMP & ENGINEERING, LLC 16 WIL-12610-E-01
AIR VALVE / CENTER SECTION DISASSEMBLYAIR VALVE / CENTER SECTION DISASSEMBLY
Step 10
Using an O-ring pick, remove
the two (2) shaft bushings from
center block. Inspect and replace
if necessary. Using an O-ring pick,
gently remove the two (2) Glyd™
rings from the center block. Inspect
and replace if necessary.
Step 11
Using an O-ring pick, remove the
two (2) Glyd™ rings from modulator
spool bore. Inspect and replace if
necessary.
Step 12
Using an appropriate-sized wrench,
remove the pilot exhaust muffler.
Inspectfordamageor contamination
and replace if necessary.
Step 14
Lift away muffler plate and muffler plate gasket from center block. Inspect
for wear and replace if necessary. Lift away the air valve assembly and
remove air valve gasket. Inspect the gasket and replace if necessary.
Step 13
Using an appropriate-sized hex
wrench, loosen and remove the
four (4) air valve bolts from center
section assembly.

WIL-12610-E-01 17 WILDEN PUMP & ENGINEERING, LLC
AIR VALVE / CENTER SECTION DISASSEMBLY
Step 1
Remove pilot exhaust muffler in
pilot bleed port located at the front
of the center block. Install 1/4" NPT
pipe plug (00-7010-08) into bleed
port.
Step 2
Next, install an optional single-point exhaust gasket
(04-2638-52). The single-point air valve gasket can
be purchased as a spare part or included with the
purchase of a new Pro-Flo®SHIFT pump.
Standard Single-Point Exhaust
SINGLE-POINT EXHAUST PRO-FLO®SHIFT
Step 16
Remove the air valve spool from the air valve body by threading one air
valve bolt into the end of the air valve spool and gently sliding the spool out
of the air valve body. Inspect seals for signs of wear and replace the entire
air valve assembly if necessary. Re-insert the spool immediately into air
valve body after inspection as the seals expand and cannot be reinserted
after a length of time.
NOTE: Seals should not be removed from the assembly. Seals are not sold
separately.
Step 15
Remove air valve end cap to expose
air valve spool by lifting up on end
cap. Inspect O-ring on end cap using
an O-ring pick. Replace O-ring(s)
if necessary. NOTE: The Pro-Flo®
SHIFT air valve incorporates an end
cap at both ends of the air valve.

Section 8
CLEAN IN PLACE - CIP
WILDEN PUMP & ENGINEERING, LLC 18 WIL-12610-E-01
ASSEMBLY:
Upon performing applicable maintenance to the air
distribution system, the pump can now be reassembled.
Please refer to the disassembly instructions for photos
and parts placement. To reassemble the pump, follow
the disassembly instructions in reverse order. The
air distribution system needs to be assembled first,
then the diaphragms and finally the wetted path. The
following tips will assist in the assembly process.
• Lubricate air valve bore, center section shaft and pilot
spool bore with NLGI grade 2 white EP bearing grease
or equivalent.
• Clean the inside of the center section shaft bore to
ensure no damage is done to new shaft seals.
• A small amount of NLGI grade 2 white EP bearing
grease can be applied to the muffler and air valve
gaskets to lubricate gaskets during assembly.
• Make sure that the exhaust port on the muffler plate
is centered between the two exhaust ports on the
center section.
• Stainless steel bolts should be lubed to reduce the
possibility of seizing during tightening.
• Use a mallet to tap lightly on the large clamp bands
to seat the diaphragm before tightening.
SHAFT SEAL INSTALLATION:
PRE-INSTALLATION
• Once all of the old seals have been removed, the
inside of the bushing should be cleaned to ensure
no debris is left that may cause premature damage
to the new seals.
INSTALLATION
The following tools can be used to aid in the installation
of the new seals:
Needle-Nose Pliers
Phillips Screwdriver
Electrical Tape
• Wrap electrical tape around each leg of the needle-nose
pliers (heat shrink tubing may also be used). This is done
to prevent damaging the inside surface of the new seal.
• With a new seal in hand, place the two legs of the
needle-nose pliers inside the seal ring. (See Figure A.)
• Open the pliers as wide as the seal diameter will allow,
then with two fingers pull down on the top portion of
the seal to form kidney shape. (See Figure B.)
• Lightly clamp the pliers together to hold the seal into
the kidney shape. Be sure to pull the seal into as tight
of a kidney shape as possible, this will allow the seal to
travel down the bushing bore easier.
• With the seal clamped in the pliers, insert the seal into
the bushing bore and position the bottom of the seal
into the correct groove. Once the bottom of the seal is
seated in the groove, release the clamp pressure on the
pliers. This will allow the seal to partially snap back to its
original shape.
• After the pliers are removed, you will notice a slight
bump in the seal shape. Before the seal can be properly
resized, the bump in the seal should be removed as
much as possible. This can be done with either the
Phillips screwdriver or your finger. With either the side
of the screwdriver or your finger, apply light pressure
to the peak of the bump. This pressure will cause the
bump to be almost completely eliminated.
• Lubricate the edge of the shaft with NLGI grade 2
white EP bearing grease.
• Slowly insert the center shaft with a rotating motion.
This will complete the resizing of the seal.
• Perform these steps for the remaining seals.
Figure A
SHAFT SEAL
TAPE
Figure B
SHAFT SEAL
TAPE
NEEDLE-NOSE
PLIERS
NOTE: To ensure proper
alignment during reas-
sembly of manifold/liquid
chamber interface, turn
off-set portion of valve
housing to the left or to
the right. This procedure
works for the inlet mani-
fold and discharge mani-
fold connections.
Off-Set
Valve
Housing
Twist
MAXIMUM TORQUE SPECIFICATIONS
Description of Part Max. Torque
Air Valve 13.6 N·m (120 in-lb)
Air Chamber Bolts 27.1 N·m (20 ft-lb)
Outer Pistons, All 54.2 N·m (40 ft-lb)
Center Block-to-Stand Bolt 44.7 N·m (33 ft-lb)
Center Block-to-Bushing Bolt 44.7 N·m (33 ft-lb)
Locking Pin 44.7 N·m (33 ft-lb)
Anti-Rotation Bolt 67.8 N·m (50 ft-lb)
REASSEMBLY HINTS & TIPS