Product Manual

The filter must be replaced when the service indicator (see section Introduction) approaches the lid of the
tower.
The lifetime of the filter depends on the amount of oil in the condensate.
Replacement instructions
1. Stop
the compressor and close the air outlet valve. Switch off the voltage. Depressurise the outlet piping
by opening the manual condensate drain.
2. Remove the lid of the first tower and take out the oleophilic filter (4 - Flow diagram of OSC 35 up to OSC
145). On OSC 355 up to OSC 1200, remove also the lid of the second tower and remove also the small
oleophilic filter (6 - View of OSC 355).
3. Only if necessary (see Problem solving, item 1), clean the inside of the OSC with water and tissue.
Do not use any form of soap or detergents as they could contain dispersants which deteriorate the ability
to break oil/water emulsions.
4. Fit the new filter (white label), observing the position. Do not push the filter below the water surface.
5. Fit the lid(s).
6. Remove the diffuser and pull out the mufflers. See section Introduction.
7. Fit the new mufflers and diffuser.
On OSC 2400: Repeat the instructions for OSC 355 up to OSC 1200 once for the left side of the unit and
once for the right side of the unit.
Activated carbon filter(s)
The activated carbon filters must be replaced when:
• The oleophilic filters are changed for the second time.
• The filters get clogged.
On OSC 355 up to OSC 2400, replace the filters when the service indicator (2 - View of OSC 355) is
rising.
• The condensate from the test outlet is less transparent than in the reference glass.
Replacement instructions
1. Stop the compressor and close the air outlet valve. Switch off the voltage. Depressurise the compressor
by opening the manual condensate drain.
2. Remove the lid of the second tower.
Take out the activated carbon filter (7 - Flow diagram of OSC 35 up to OSC 145). On OSC 355 up to
OSC 1200, take out the small oleophilic filter and replace also the activated carbon filter in the third tower.
3. Clean out the vessels with water and tissue. Do not use any form of soap or detergents as they could
contain dispersants which deteriorate the ability to break oil/water emulsions.
4. Fit the new filter in the tower (activated carbon = black label), observing its position.
On OSC 355 up to OSC 1200, put a new small oleophilic filter on top of the activated carbon filter (see
section Oleophilic filter).
5. Refill with clean water until it comes out of the condensate outlet.
On OSC 2400: Repeat the instructions for OSC 355 up to OSC 1200 once for the left side of the unit and
once for the right side of the unit.
Instruction book
16 AIF999999