F U N C T I O N
Portable AC-powered source of vacuum (to 365 mm/ 25’’Hg) or pressure (to 4.2 kg/cm2/60 psig) for
filtration and other continuous or intermittent laboratory use. The motor and pump are permanently
lubricated. Operating noise is low and is further minimized by rubber-cup mounts, and inlet and outlet
filter/muffler silencers. All internal surfaces of the pump (except the stainless steel leaf–valves) are
Teflon–coated to prevent possible corrosion of the aluminum surfaces. The neoprene diaphragm is also
protected with an Armalon cover to prevent attack by chemicals or solvent vapors, thus prolonging its
use. However, to prevent excessive amounts of liquids or mist from entering the pump (which could
cause faulty or erratic operation) a water trap should be used in conjunction with the pump (please note
Fig. 2).
O P E R A T I O N
The Millipore Vacuum/Pressure Pump is boxed in a condition ready for use. However prior to start-up,
please observe the following:
1.
Select appropriate hose to be used for desired mode of operation. For pressure, select tubing with a
3/1 6“ to 1/4’ I. D., and wall thickness/wall reinforcement to withstand pressures in excess of 80 psig.
For vacuum, select tubing that will withstand vacuum up to 27” Hg.
2.
If using the vacuum mode, and carrying out vacuum filtration of liquids, set up a vacuum–flask water
trap between the filter holder and the pump unit as shown in Fig. 2.
Fig. 2. Second side arm flask connected in series keeps liquid droplets or water vapor out of pump.
3.
Prepare desired equipment or filter holder to be employed with pump, then plug electrical cord into
the desired electrical receptacle (AC 100V, 115V, 220/240V, depending upon the pump used).
4.
Turn on motor by pressing switch mounted on the side of pump unit. Ensure that the pump is
under no load when starting, otherwise the pump may not function. If this situation should arise
while using the vacuum mode simply break vacuum and after pump begins operation, reconnect
tubing and commence vacuum operation. If the pump is used to pressurize a system and this
situation occurs, disconnect tubing from tank or equipment to be pressured, and when pump begins
operation, reconnect tubing.
2
