VACUUBRAND BVC 21 NT VARIO - Manual (Page 24)

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.: 999157 / 10/12/2009
page 24 of 31
➨ Establish hose connections to the pump head in three
places.
➨ Push transparent PVC hoses (2x) onto the hose connec-
tors (1)+(2).
➨ Push PTFE tubing onto the connector at the quick cou-
pling (3). Fix the PTFE tubing with the clip to the hose
connector. Close clip with flat pliers.
Assembling the connecting hoses
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 (Maximum 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
crosswise first slightly then tighten.
☞ Do not tighten until head cover is in contact with housing,
torque 12 Nm.
Assembling the pump head
➨ By turning eccentric bushing (front of connecting rod),
bring connecting rod into a position in which diaphragm is
in contact with housing and centred with respect to bore.
☞ Tilt pump carefully onto the left side so that the diaphragm
is on top. Support pump appropriately.
1
3
2