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GA01208_002_C0 - 11/2016 - © Leybold
5.5 Cleaning the Inlet Screen
A wire-mesh sieve is located in the intake port of the pump to act as a dirt
trap for foreign objects. It should be kept clean to avoid a reduction of the
pumping speed.
For this purpose, remove the dirt trap (2/2) from the intake port and rinse it in
a suitable vessel with solvent. Then thoroughly dry it with compressed air.
If the dirt trap is defective, replace it with a new one.
The cleaning intervals depend on the application. If the pump is exposed
to large amounts of abrasive materials, a dust filter should be fitted into
the intake line.
5.6 Removing and Fitting the Internal Demister
Required tools: Allen keys size 5, 6 and 8
Required spare parts:
Gasket for oil case (10/7)
For material No., see spare parts list
Internal demister (10/3)
For material No., see spare parts list
The internal demister is spring-mounted in a frame. When it is clogged, it
rises periodically to reduce the pressure difference created. The resultant
noise at high intake pressures indicates that the internal demister is dirty.
Periodically clean or replace the internal demister; the maintenance interval
depends on the application. Use a suitable solvent for cleaning.
Shutdown the pump and drain the oil (see Chapter 5.4).
Remove the four
recessed
screws on the oil case. Don’t remove the
non-recessed
screws; they hold the motor flange in place and need not be
removed.
Pull the oil case forward off the pump.
Remove the gasket and spacing discs/rings.
Lift off the frame and remove the internal demister.
Clean all parts and check that they are in perfect condition; if not, replace
them with new parts.
Reassemble in the reverse order.
The tightening torque for the screws has been specified at 12.5 Nm for the
D 40 B and 10 Nm for the D 16/25 B.
Maintenance
NOTICE
