Heidolph ROTAVAC Vario pumping unit - Manual (Page 51)

page 51 of 61
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.: 999248 / 28/04/2011
➨ Use open-ended wrench (w/f 17) to loosen the union nut at
the hose connection next to the gas ballast.
11.1 Cleaning and inspecting the pump heads
➨ Use open-ended wrench (w/f 17) to loosen the union nut at
the hose connection next to the inlet and remove hose.
➨ Use Phillips screw driver to remove both screws at the fix-
ing plate of the controller and remove controller.
➨ Remove control cable at the rear side of the controller. Do
not cant when removing plug connection!
Tools required (metric):
- diaphragm key w/f 46 (enclosed in the set of seals)
- open ended wrench w/f 14 / 17
- hex key size 4
- Phillips screw driver size 2
☞
Please read section ”Replacing diaphragms and valves” completely before
starting maintenance.
Partially the pictures show pumps in other versions. This doesn’t influence replacing diaphragms and
valves of the pump.