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Maintenance
5.4 Cleaning the Fan Cowl
and the Cooling Fins
Observe all safety information provided in
Section 5.1.
The slits in the fan cowl (8/14) as well as the fins on the
motor and on the pump may be contaminated depending
on humidity conditions and the degree of contamination
in the ambient air.
In order to ensure a sufficient air flow for the motor and
the pump’s casing, the grid of the fan cowl must be
cleaned with a clean brush when contaminated.
Any coarse dirt must be removed from the fins on the
motor and the pump.
5.5 Cleaning the Dirt Trap
Observe all safety information provided in
Section 5.1.
A wire-mesh sieve is located in the intake port (8/5) to
collect foreign objects. It should be kept clean in order to
avoid a reduction of the pumping speed.
To do so, take off the intake line. Remove the dirt trap
from the intake flange and rinse it using a suitable
solvent. Then thoroughly dry it with compressed air. If the
dirt trap is damaged, replace it.
5.6 Cleaning the Pumping
Chamber
Observe all safety information provided in
Section 5.1.
Under dirty operating conditions, contaminants may be
deposited in the pumping chamber or on the impellers.
After removing the two connecting lines, the
contaminants can be blown out with dry compressed air
or flushed out with a suitable solvent.
Contaminants that cannot be blown or flushed out, can
be removed completely from the pumping chamber with
a wire brush, metallic sponge or scraper.
Then change the oil.
During cleaning, the impellers must be
turned only by hand.
The loosened deposits must not remain in
the pump. After cleaning, check the pump
by slowly turning the impellers by hand.
They should move freely and without any
resistance.
Generally, the Roots pump does not need to
be disassembled. If necessary, this should
only be done by our after-sales service.
Warning
Achtung
Warning
Warning
Warning