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 6 and 8
Required spare parts:
Gasket for oil case (10/5) 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 Section 5.4).
Remove the six recessed screws (10/6) on the oil case (10/4). Do not
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 (10/5).
Unscrew screw (10/1).
Remove small washer (10/1), spring (10/1), large washer (10/1) and O-ring
(10/1).
Lift off the frame (10/2) and remove the internal demister (10/3).
Clean all parts and check that they are in perfect condition; if not, replace
them with new parts.
Reassemble in the reverse order.
Torque for the screws (10/6) is 12.5 Nm.
NOTICE
Maintenance
45GA01218_002_C1 - 07/2018 - © Leybold
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