INSTALLATION, START-UP & MAINTENANCE MANUAL
MODEL NO.: SD-820 / SD-1710
REV 1 – AUGUST 03,.2001
Page 24
SECTION 4
4.4 FILTERS
4.4.1 General comments and use
Filters of the series MPH are suitable for filtering solids, oil and condensate out of
compressed air and other neutral, compressed gases. This new filtration concept is
characterized by high flows at low differential pressure.
4.4.2 Function
The soiled medium flows through the filter element series “MPH" from the inside to the
outside. Solids are filtered out by impact or by the effect of inertia, whereas oil particles
and drops of humidity are filtered out by the effect of coalescence. By the force of
gravity, the filtered-out droplets collect in the lower filter vessel and are drained
automatically or manually.
4.4.3 Assembly and installation
* Advices
−
Within the piping system, the filters should always be used where the air or gas
temperature is lowest.
−
The piping system must be cleaned before filters assembling.
−
The filters must always be installed vertically.
−
An arrow on the upper part of the housing marks the direction of the flow.
−
Sufficient free space should be left at the bottom for the changing of filter elements.
4.4.4 Maintenance
* Advices
−
The filter element should be replaced when a differential pressure of
> 10 PSID has been reached, or on latest after 1 year of operation.
−
The functioning of the automatic condensate drain is to be tested weekly by manual
operation.
−
Should there be no condensate drain, then, depending on the amount, the
condensate on the pre-filter is to be removed several times a day by opening the
hand drain.
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