Documents are only to be used and distributed completely and unchanged. It is strictly the users’ responsibility to check carefully
the validity of this document with respect to his product.
page 18 of 24
No. 47800-2-02-5
Assembling pump heads
➨
Bring the diaphragms into a position in which they are in
contact with the housing and centred with respect to the
bore.
➨
When mounting the housing cover, install the connecting
tube (1) under the pump between the two housing covers.
Pay attention to the correct positions of the seal rings (re-
place if damaged) in the grooves at the ends of the tube.
Stick the connecting tube in the bore of the housing cover.
After the assembly the connecting tube may have some
play.
Reassemble in reverse order.
➨
Install head cover, valves, O-rings and housing cover.
☞
Make sure that the diaphragm stays centric so that it will
become clamped uniformly between housing and head
cover.
➨
Put the head cover onto the housing.
☞
Orientation of the head cover: Align the nib at the head
cover with the notch of the housing cover.
➨
Put the valves in place. In case install O-rings.
☞
Make sure that the
valves are correctly seated
: Valves at
the outlet with round centred opening under valve, valves
at the inlet with kidney-shaped opening of the head cover
(2) beside valve.
(2)
(1)
➨
Put housing cover in place.
☞
If it is not possible to position the housing cover, check
the head cover for correct orientation. The nib at the head
cover has to lock into the notch of the housing cover.
➨
Install the connecting tube (1) under the pump between
the two housing covers.
➨
Screw in the socket head screws fixing the housing cover
crosswise first slightly, then tighten.
☞
Torque
12 Nm
.
If the pump does not achieve the ultimate vacuum:
☞
In case the diaphragms and valves have been replaced, a run-in period of several
hours is required before the pump achieves its ultimate vacuum.
☞
In case of unusual noise switch off pump immediately and check clamping disc
positions
If the pump does not achieve the ultimate total vacuum:
Check hose connectors between pump heads and manifolds for leaks. If necessary
recheck pump chamber.
➨
Position the diaphragm pump carefully on the other side, support pump appropriately. Perform main-
tenance of the remaining pump heads according to the description above.
