RIEGLER VFR 33 S Instrucciones De Uso página 8

EN
SINGLE UNITS
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P
STOP
Filter
Compressed-air filter cleans compressor air of moisture and
solid matter. A filter cartridge made of sintered PE featuring a
40 µm pore width is installed as a standard (5 µm pore width
optionally).
Maintenance: By means of the drain plug, regularly drain the
condensation water before it reaches the "max." mark. It is safer
to build in or attach an automatic drain valve of type 441 or 5370.
Cleaning of filter: Depressurize the service unit (vent air). Detach
bowl ( ) at bayonet, unscrew baffle plate, remove the filter
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cartridge and wash it out or replace it with a new cartridge.
Refit bowl.
Microfilter
Microfilters as second stage (downstream of filter with 5 µm
pore width) are cleaning the compressed air almost entirely of
the remaining smallest water and oil droplets and dirt particles
– 99.999 % effective (relative to 0.01 µm). Filter change at max.
1 bar / 14.5 psi pressure drop through the service unit, but after
one year at the latest. The filter cartridge cannot be cleaned
and must therefore be replaced. A clogging indicator is available
as an option.
Cartridge replacement: Depressurize service unit. Detach
the reservoir at bayonet and unscrew the old filter cartridge;
screw in a new filter cartridge with O-ring, refit reservoir. (In analogy
to changing of sintered filter,
Activated charcoal filter
After the microfilter, they are used to remove oil vapours and
other organic pollutants from the compressed air. The activated
carbon fibres are located between 2 stainless steel nets.
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OIL
The filter insert cannot be cleaned and must therefore be replaced.
Replacement recommended after approx. 1000 operating hours.
Caution: Some hazardous substances are either not absorbable
or only slightly absorbable with activated carbon (CO, CO₂, NH₃).
Replacing the cartridge: See Changing the Microfilter
Pressure Regulator/Precision pressure regulator
Compressed air regulators maintain a largely constant working
pressure regardless of network pressure fluctuations and air
consumption. The admission pressure should be about 2 bar
higher than the working pressure. The pressure gauge also
can be fitted on the back. With self-tightened connection
thread ( ).
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Adjustment: Before adjusting the pressure, pull up the
handwheel and turn it to the left to relieve the regulator (
Then turn it clockwise until the pressure gauge displays the
desired working pressure. Arrest the handwheel again by
pushing it in. Observe maximum admission pressure and
working pressure. As option a lockable handwheel is available
(cannot be retrofitted!)
Maintenance: To grease the O-rings, depressurize the service
unit. Unscrew bottom, remove main valve and grease O-rings
and guide pin (approximately every 6 months, depending on
quality of air).
Filter pressure regulator
See filter and regulator. The main valve is located above the
sintered filter.
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