18 T-BA/ET-1250-0-GB-
10
-
11
7.0 Maintenance
7.2.2 Rotary compressor/Compressor
vacuum pump
The machine must be cleaned every week.
When washing respectively cleaning with
a pressure washer, there is a risk of
water penetration, which can cause water
hammer and thus machine failure.
Carefully clean the oil sight glass.
After wet cleaning, run machine for several minutes
until warm so as to prevent the rotary slide valve from
sticking.
7.2.3 Vacuum filter
Clean filter in line with the amount of fouling on a daily
basis, at least, however, once weekly.
When the vent valve actuates the vac-
uum filter must be cleaned as a matter of
principle.
The filter element consists of a high-
grade steel fabric or a microfilter cart-
ridge.
Opening the filter
Release or unscrew the tapered respectively star
knob. On type SFA turn the cover about 15° counter-
clockwise away from the stud bolts and then remove
the cover from the housing. On type SFD the cover
can be simply removed.
Cleaning the filter
•
Wash the filter housing with gasoline or cold
degreaser.
•
High-grade steel filter inserts can be washed with
gasoline or cold degreaser.
•
The microfilter cartridge filter element can be
cleaned by blasting inside and out with a steam
cleaner. Check the microfilter cartridge for dam-
age. A damaged cartridge must be replaced.
•
Check the round seal or gasket for damage.
Replace damaged sealing rings.
When cleaning the filter housing, take
steps to prevent any dirt, wadding or
liquids from entering the compressor/
vacuum pump. These may cause valve
breakage.
Assembling the filter
Insert filter cartridge.
Place gasket, respectively round seal in cover. Push
washers outwards against the tapered or star knob.
Push cover into the housing (on type SFA, turn cover
clockwise into the studs).
Tighten cover with tapered or star knob.
7.2.4 Combination intake air filter
Compress the dust removal valve every week to check
for considerable accumulations of dust.
The service indicator provides information about the
condition of the filter cartridge in the air intake filter.
The filter cartridge must be replaced
when the red marking is visible on the
service indicator.
Replacing the filter cartridge
1. Switch off the compressor.
2. Remove cover with dust removal valve.
3. Using a wrench, unscrew the hexagonal nut.
4. Remove fouled cartridge and throw away.
5. Using a moist rag, clean the filter housing in
particular along the seal of the filter cartridge.
6. Take care to ensure that no dust can enter the
clean air pipe.
7. Insert new cartridge in the filter housing.
8. Using a wrench, tighten the hexagonal nut.
9. Attach cover.
Assemble the filter in the reverse sequence. When
attaching the housing cover, the dust removal valve
must point downwards.
