Vogelsang VX Series, Manual

Page: 86 / 202

Rotary lobe pump
Operating instructions
VX100Q, VX136Q..QD..QDM2, VX186Q..QD..QDM2, VX230Q..QD
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8.2 Before opening the Q or QD cover
Before opening the Q and QD cover:
•
Depressurise the pump assembly.
•
Shut off the connected pipes.
•
Empty the pipe as much as possible using drain cocks.
Attention! The remaining liquid flows out of the pump when the cover is opened.
8.3 Opening the Q cover

Fig. "Opening/Closing the Q cover"
1. Depressurise buffer chamber (if rotary lobes are to be dismounted).
2. Loosen hexagon nuts (1) (or hexagon head screws (1) on VX230 series) on the Q cover (5).
3. Remove Q cover and remove the O-ring (6).
8.4 Closing the Q cover

Fig. "Opening/Closing the Q cover"
1. Thoroughly clean the contact surfaces before installing the Q cover (5).
2. Pull the O-ring (6) onto the Q cover.
3. Set the Q cover in place.
4.

Screw four hexagon nuts (1) onto the threaded rod and tighten, or on VX230 series attach the Q cover
with 8 hexagon head screws (1).
Attention! When doing so, ensure that you do not tilt the Q cover, evenly tighten by hand!
Ensure correct seating of the O-ring.
Fig. 23 : Opening/Closing the Q cover
1 Hexagon nut / Hexagon head screw
5 Q cover
6 O-ring