PFD4/PFS4 – OPERATING INSTRUCTIONS
∙PFD4 325 or PFS4 325: incorporates a flanged fitting PN10 DN25.
Both the inlet and outlet fittings can be turned over if necessary, by loosening the nuts on the inlet and outlet manifolds (P/N 2430M or 2435M, Mark G). For the suction manifold, first remove the base plate of the pump (P/N 2492).
If your pump is marked “W”, and you wish to change the side of the inlet and/or outlet manifolds, you must absolutely change the PFA seals (washers, P/N 2592, Mark F) located deep in the groove at the same time. Proceed as follows:
1)Remove the washers (with an air spray gun),
2)Fit the new washers in their grooves (a set of exchange seals is supplied with the pump: P/N WWES KIT S4),
3)Install and tighten the manifolds with a strap wrench (while tightening, you may here a bang).
III.4 –Tests and controls
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 manifold rings are tight (tighten by hand),
∙The body tie rod nuts are tight. Because of the material of these tie rods, tightening of couple must be controlled: we recommend 7 N.m. (Maximum is 10 N.m),
∙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 fluid must be less than 1000 cpo.
PFD/PFS 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 PFD/PFS pump can handle liquids from 32°F (0°C) to +212°F (100°C). When the fluid temperature is greater than 140°F (60°C), you must frequently check that the manifold rings 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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INDEX | DATE | N° |
03 | 22/04/02 | DC04020US |
