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. Manual-no.: 999084 / 05/10/2009
page 39 of 46
Montage of the connecting hose:
Individual performance check of a pump head:
Assembling pump heads
➨
By turning eccentric bushing (front of connecting rod), bring
connecting rod into a position in which diaphragm is in con-
tact with housing and centred with respect to bore.
Reassemble in reverse order.
➨
Install head cover, valves and housing cover with housing
cover insert.
☞
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 beside valve.
➨
By turning eccentric bushing, bring connecting rod into up-
per turning point position (Max. stroke of the rod).
☞
Pay attention that the diaphragm stays positioned centrally
so that it will become clamped uniformly between housing
and head cover.
➨
Screw in four socket head screws fixing housing cover cross-
wise (e. g. in the sequence
➀
,
➁
,
➂
,
➃
) first slightly, then
tighten.
☞
Do not tighten until head cover is in contact with housing,
torque
12 Nm
.
By measuring the pressure at the inlet port of the individual
head:
Use a suitable vacuum gauge (e. g. DVR 2, cat. no.: 68 29 02),
make sure that it is correctly calibrated, and measure the pres-
sure at the inlet port. A vacuum of less than 120 mbar should
be indicated.
☞
If the reading is higher, recheck the pump chamber and make
sure that the valves and the diaphragms are correctly seated
(diaphragms concentric with bore).
➨
Use open ended wrench (w/f 14) to reconnect hose to elbow
fitting.
➂
➂
➂
➂
➂
➃
➃
➃
➃
➃
➀
➀
➀
➀
➀
➁
➁
➁
➁
➁
