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Page 3
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Introduction
A462-26-880 Issue F
The oil-free exhaust fumes then pass through the activated carbon filter element to remove any residual odours.
The filter element has a pressure relief valve. If the element becomes blocked, the pressure relief valve allows
exhaust gas to bypass the element and prevents pressure build-up in the pump. The pressure relief valve does not
allow gas to escape from the exhaust system. A high exhaust pressure, caused by a blockage elsewhere in the exhaust
system, will not be relieved by the pressure relief valve.
The amount of oil that has accumulated in the filter is visible through the sight panel on the lower part of the filter
body. When the oil level reaches the maximum oil level (
Figure 1
, item 13), you should remove the drain plug to drain
the oil from the filter.
Accessories are available for the EMF filters for the drainage and return of trapped oil to the pump: refer to
Section 7
.
1.3
Applications
The EMF Oil Mist Filters are resistant to many chemicals and solvents and are unaffected by alkalis, detergents and
salt solutions. The EMF Oil Mist Filters are also suitable for use with chemicals that form azide compounds.
If you have any doubt about the suitability of the filter for your application please contact your supplier or Edwards
for advice.
1.4
Connections
The EMF series filters are manufactured with NW flanges sized to suit the dimensions of the filter and the pump that
it is designed to fit.