Sundstrom SR 99-1 Mode D'emploi page 13

1. General information
2. Applications
3. Description
4. Use
5. Filter change
6. Cleaning
7. Warnings
8. Technical data
9. Components
1. General information
Breathable air must meet at least the following purity
requirements:
• the impurities must be maintained at a minimu m, and must never
exceed the hygienic limit value.
• the content of mineral oil must be so low that no smell of oil will
be detectable (the odour limit is around 0.3 mg/m
• the dew point of the air must be so low that no water will be
precipitated out and no freezing will occur inside the equipment.
For further particulars of breathable air, see EN 132:1998, EN
12021:2014 and possibly other national regulations.
2. Applications
The compressed air filter SR 99-1 is used for converting ordinary
compressed air into clean, breathable air. It is also suitable whenever
clean air is needed for pneumatic instruments and tools.
3. Description. Fig. 1
The SR 99-1 compressed air filter mainly consists of a filter regulator
with automatic drain (3), drain bowl (5) and filters (13, 14).
Coarser particles (oil, water, dirt) are removed by centrifugal separa-
tion in the pre-collector. After the pre-collector, the air flows through
the filter, in which even very small particles, as well as gases,
vapours and odours, are removed. The filter is a replaceable filter
element consisting of a central activated carbon filter section (14),
surrounded by two particle filters (13).
4. Use. Fig. 1
When the filter is used to its maximum capacity, i.e 3 connected
users the available compressor capacity must be at least 900 l/
min. The consumption of any tools connected to this system must
be added to the above values.
The compressor air intake must be located so that there will be no
risk of polluted air being drawn into the system.
• The filter has two outlets (11), one of which is plugged prior to
delivery. Fit the safety coupling supplied (13).
• The inlet thread (2) of the filter is 1 /2" BSP female. Fit a suitable
coupling/nipple.
• The filter is automatically drained to the given level. The drain
can also be opened manually by turning the pre-collector at the
bottom of the drain bowl. Fig 2.
• The filter element is fitted prior to delivery. Note the date on the
label at the outside of the filter housing to be enable you to keep
track of the date when the filter should be changed.
• The SR 99-1 is equipped with keyhole mountings for mounting
it on a wall, but it can also be stood on a suitable surface.
Compressed air filter SR 99-1
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5. Filter change
Under normal operating conditions, the filter element has a useful
life of around six months. However, the useful life may vary widely,
depending on the condition of the compressed air system and the
air flow rate through the filter. The condition of the filter element
can be assessed by weighing. The original weight is shown on the
filter element. If the weight has increased by about 100-150 grams,
the filter should be changed. If the smell or taste of the impurities
become detectable, the filter should immediately be changed:
• Shut off the air inlet.
• Turn the pre-collector at the bottom of the drain bowl to depres-
surise the filter. Fig 2.
• Loosen the hose between the regulator and filter lid by pushing
the red sleeve on the coupling and disconnect the hose from the
lid. Fig 3.
• Unscrew the knobs of the filter housing and remove the lid. Fig 4.
• Remove the used filter element. Fig 5. Clean and wipe if necces-
sary.
• Check the seals and change if they are damaged. Fig 6. Two
seals (A and D) seals towards the filter housing (C). Seal (E) seals
against the clean side of the filter element (B) towards the outlet.
• Mount the new filter element. This has identical ends and can
be fitted either way round. Fig. 6.
Then assemble the filter:
• Refit the cover. Fig. 4.
• Connect the hose between the control valve and filter lid by
pushing the hose into the connector. Fig 3.
• Check that the pads on the cover and end caps fit into their
grooves. Fig. 7.
• Tighten the knobs alternately by hand until the lid meets the filter
housing.
Dispose of used filters in an appropriate manner, observing the
relevant rules and instructions.
6. Cleaning
Clean the outside of the filter as necessary, using soapy water
and a sponge or brush. The filter can also be blown clean with the
compressed air or flushed with water. A good time to clean the filter
regulator and the drain bowl is when the filter insert is replaced.
• Shut of the air inlet.
• Turn the pre-collector at the bottom of the drain bowl to depres-
surise the filter. Fig 2.
• Remove the drain bowl. Press it downward and twist anti-clock-
wise (bayonet mounting). Fig 8. Wash the bowl in hot water (not
solvent) at a maximum of 60 °C.
• Remove the pre-collector element by turning it anti-clockwise
(Fig. 9).
• Blow the parts clean with compressed air. Check that the drain
outlet is not obstructed.
• Refit the filter element and the drain bowl.
EN
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