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Maintenance and Servicing
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6.2.1.2
Assembly
Assembly takes place in reverse sequence. Use care when carrying out these activities,
and check for the proper fit of the couplings.
6.2.1.3
Test
Connect a vacuum measuring device to the intake port and check the ultimate pressure.
If the device is working properly, then the figure stated in the technical data must be attained
within a maximum of one minute.
6.2.2
Maintenance of the diaphragm pump
Scope of permissible work:
Inspect the pump chambers, diaphragms and valves,
Deposits in the inside of the pump must be cleaned out,
Change the diaphragms, valves and seals.
Tools required:
Tool kit: Order no. 402107,
consists of:
Order no. 826801-4
Cross-head screwdriver, size 2,
Order no. 826801-2
Open spanner, size SW 14.
6.2.2.1
Disassembly
1. Disconnect the power supply and ensure that it cannot be switched on again.
2. To open the cover of the casing, remove the 4 screws from the unit's bottom side.
3. Open the screw clamps of the hose bridge on the pump body with the open spanner,
size 14.
4. Remove 2 x 4 screws
(1)
from each connecting head
(2)
with a cross-head screwdriver,
size 2.
5. Lift off the connecting head
(2)
and the pump head
(5)
. The diaphragm is now freely
exposed.
6. Loosen the defective diaphragm
(6)
by turning it anticlockwise.
7. Valves
(4)
and o-rings
(3)
are located between the connecting and the pump head.
When dismounting both heads these parts are accessible.
8. Clean the valves
(4)
, o-rings
(3)
and diaphragm
(6)
with a soft cloth and acetone and
replace defective items if necessary.
Fig. 8 Disassembly - Assembly