VI – Dismantling and Repair 6
VI.1 – How to dismantle
VI.2 – Examination
VI.3 – Stripping and assembling the pump
VI.3.1 – Replacing the shuttle valve
VI.3.2 – Replacing the bellows
VI.3.3 – Replacing the central shaft and shaft composite rings
VI.3.4 – Replacing the PTFE sleeves
VI.3.5 – Replacing the bellow and body O.rings
VI.3.6 – Replacing the manifold O.rings
VI.3.7 – Replacing other parts
VII – Warranty 11
Appendix: Spare parts list
Maintenance kits
Section view (drawing “APP 1 REF”)
Part numbers table (“APP 1 REF”)
General arrangement drawing (drawing “APP 1 EXT”)
Flow rate/discharge pressure curves
Pneumatic diagram (drawing “APP 1 CAB”)
INDEX DATE N°
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PFD1/PFS1 – OPERATING INSTRUCTIONS
Thank you for selecting a SAINT-GOBAIN PERFORMANCE PLASTICS ASTI model PFD1 AstiPure™
pump, series 2 (or PFS1: slurry applications).
I – General
I.1 – Introduction
The Model PFD/PFS is a pneumatically operated TEFLON® pump. There are no internal or external
metal parts.
The pump is designed for handling corrosive, inflammable and sterile fluids. It meets the requirements of
the semiconductor, pharmaceutical and chemical industries.
I.2 – Materials
All wetted parts are manufactured in TEFLON® PFA HP and PTFE.
Other parts are made of high-tech plastics such as PVDF, PEEK etc.
There are no metal parts.
I.3 – Operation
The pump is pneumatically operated; two bellows joined by a central shaft reciprocate horizontally. The
suction and delivery strokes alternate from one side of the pump to the other.
The pump is self-priming and has four balls, which seat on lip seals (check valves).
The pumping frequency of a bellows pump is much slower than an equivalent diaphragm pump and
results in an extended life for the bellows.
Pulsation dampers with wetted parts in TEFLON® PFA and PTFE are available as an option. This
dampens the pulse by approximately 65 to 80%. The pulsation damper for the PFD1/PFS1 pump is
AMC1/AMS1.
I.4 – Pump Data
Flow rate 2.5 GPM (600 l/h)
Discharge pressure 58 PSI max. (4 bar)
Suction head 10 feet wat er column (3 m)
Max. air consumption 6 SCFM (10 m³/h) NTP
Connections 3/8”x1/2” or 10x13 mm TEFLON® flared tube or 1/2” MNPT thread.
Air connection 1/4" I/D gas female thread
Tubing ∅3/32”x5/32” (2.5x4 mm) maximum
10 feet (3 m) < length < 20 feet (6 m)
Weight 4.5 lbs (2 kg)
Also available three larger capacity pumps with optional pulsation dampers:
PFD2/PFS2 Flow rate 5 US GPM (20 l/min) AMC2/AMS2
PFD3/PFS3 Flow rate 12.5 US GPM (50 l/min) AMC3/AMS3
PFD4/PFS4 Flow rate 25 US GPM (100 l/min) AMC4/AMS4
II – Quick checklist
II.1 – Shipment
Pumps are cleaned and assembled in our clean room, then double sealed in plastic bags to ensure they
are not contaminated in transit. They are then packed in cartons with Polyethylene protection.
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PFD1/PFS1 – OPERATING INSTRUCTIONS
II.2 – Reception
Upon receipt of the pump, please check that:
• The carton has not been damaged in transit. If there is any visible damage, immediately contact the
carrier.
• The pump is not damaged. If there are signs of damage, you should report this immediately to
SGPPL ASTI or your local distributor.
• An operating instruction manual has been included in each package. Please request another copy if
it has not been included.
III – Installation and Operation
III.1 – Testing
All pumps are tested with DI water at the factory in our clean room for:
• Maximum flow rate with no back pressure
• Minimum flow rate with no back pressure
• Flow rate with 58 PSI (4 bar) discharge pressure
• Checked for leakage
III.2 – Set up
The pump must be installed horizontally as shown on general arrangement drawing (see appendix
“APP 1 EXT”). This drawing also shows the overall dimensions of the pump etc.
The pump must be positioned on its feet. If not, the check valves will not seat correctly and the pump
may malfunction.
III.3 – Connections
III.3.1 – Air/Nitrogen connection
The pump must be connected to a clean dry air or nitrogen supply. On no account should the air/nitrogen
supply be lubricated, oil or water droplets will cause the shuttle valve to malfunction.
Minimum and maximum supply pressure must be between 29 and 72.5 PSI (2 and 5 bar).
For optimum pump operation, we recommend a supply pressure of 51 PSI (3.5 bar).
The ID of the tube supplying the dry air/nitrogen should not exceed 3/32” (2.5 mm). The tube length
between the pump and on/off valve should be between 10 feet minimum (3 m) and 20 feet maximum
(6 m).
When in aggressive conditions (acid vapors), it is advised to canalize outlet with a tube of minimum
ID 1/4” (6 mm).
The pneumatic on/off valve must be 3-way to ensure the shuttle valve on the pump resets itself when the
pump is switched off. The flow control valve must be positioned before the 3-way on/off valve
(see appendix “APP 1 CAB”).
A remote control box with on/off switch and needle valve (P/N 21 000 04) is available as an optional
extra.
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PFD1/PFS1 – OPERATING INSTRUCTIONS
III.3.2 – Fluid connections
The pump is self-priming. The inlet is at the bottom and the outlet at the top.
Two optional fittings are available:
• PFD1 210 or PFS1 210: pump is supplied with flared fittings suitable for 3/8”x1/2” (10x13 mm)
TEFLON® tube. The tube needs to be flared prior to fitting using SGPPL ASTI forming tool
(P/N MF11013).
• PFD1 221 or PFS1 221: pump is supplied with 1/2” MNPT male threads on the inlet and outlet. We
recommend using TEFLON® tape when connecting female tube fittings to the PFD/S1 221 pump.
Both the inlet and outlet fittings can be rotated through 180 degrees if necessary, by loosening the nuts
on the inlet and outlet fittings. Then, retighten the nuts.
III.4 – Initial Tests and Adjustments
Before commissioning the pump, we recommend to test it dry with a supply pressure of 72.5 PSI
(5 bar) to ensure the system works correctly (See III.3.1 for the correct connections).
If the pump is cycling too quickly reduce the speed by adjusting the needle valve.
Before using the pump with chemicals please check:
• The body rings (P/N 2706, Mark L) and manifolds are tight,
• The air/nitrogen supply is dry, clean and between 29 and 72.5 PSI (2 and 5 bar),
• The inlet and outlet fluid connections are correctly fitted and tight .
IV – Applications
IV.1 – Chemical compatibility
All PFD/PFS pump wetted parts are manufactured in TEFLON® PTFE and PFA and are suitable for
pumping even the most corrosive concentrated chemicals: H2SO4, HNO3, HF, H3PO4, HCl, NH4OH, KOH,
NaOH, CH3COOH, TMAH, H2O2...
The viscosity of the liquids must be less than 1000 cpo.
PFD pumps can pump liquids containing particles up to 0.02” (0.5 mm).
Very abrasive liquids are not recommended.
Please call either the factory or your local distributor if you require information on chemical compatibility.
IV.2 – Contamination
The “all plastic” construction of the PFD/PFS pump ensures no ionic contamination of the chemical, even
if there is a bellows failure.
Due to the low frequency and amplitude of the bellows pump, SGPPL ASTI guarantees a lower level of
particle contamination when compared to a diaphragm pump.
IV.3 – Temperature range
The pump can handle liquids from 32°F (0°C) up to +212°F (100°C).
When the fluid temperature is greater than 140°F (60°C) you mus t frequently check that the body rings
(P/N 2706, Mark L) and manifolds are fully tight and that supply pressure is less than 43.5 PSI (3 bar).
For special applications call SGPPL ASTI or your local distributor.
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PFD1/PFS1 – OPERATING INSTRUCTIONS
IV.4 – Applications
The PFD/PFS pump is a volumetric pump. The stroke volume is dependent on the flow rate and
discharge pressure.
In order to know the precise flow rate of the pump, a paddle wheel flow transmitter can be fitted on outlet.
For PFD1/PFS1 the part number of the flow transmitter is DP11013.
• Part number marked K (PFD1 210K or PFS1 210K) indicates that the pump will be supplied with
KALREZ® manifold (P/N 2745K, Mark G) and body O.rings (P/N 2739K, Mark H).
PFS1 pumps are equipped with valve seats without lip (P/N 2711A, Mark I) and bellows with rounded
spires (P/N 2613S, Mark F) in order to pump abrasive products (slurry).
Common applications are:
• Semiconductor Industry: Transfer of ultrapure and corrosive chemicals.
Pump filter recirculation systems.
• Pharmaceuticals and Chemicals: Chemical injection and sampling.
IV.5 – Limitations of use
The standard pumping speed of the PFD1/PFS1 is about 135 strokes/min.
The following should NOT be part of the system:
• Do not connect the pump inlet or outlet with air, nitrogen or liquid under pressure,
• Lubricated and/or wet air/ nitrogen,
• Air supply tubing greater than 3/32” (2.5 mm) ID,
• Air line length between the pump and control valve less than 10 feet (3 m) and more than
20 feet (6 m),
• Air pressure less than 29 PSI (2 bar) or greater than 72.5 PSI (5 bar),
• Inlet connection less than 3/8” (9 mm) ID,
• Restricted suction side (valves, filters...),
• Exceed the recommended liquid temperatures,
• Pumping too viscous or abrasive liquids.
Any of the above may be detrimental to the normal operation and life expectancy of the pump and may
invalidate the warranty.
If the pump is being used with very corrosive chemicals or if it is left for extended periods not in use, we
recommend the system is emptied and flushed.
V – Maintenance
V.1 – Trouble Shooti ng
If the pump stops for any reason check:
• The air/nitrogen supply,
• That all valves in the chemical lines are open.
Before dismantling the pump, ensure the shuttle valve is in the correct position. Depress the manual
override on the shuttle valve (P/N 2701, Mark A) to re-position the shuttle.
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