1 cleaning and inspecting the pump heads – Heidolph ROTAVAC vario control User 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.: 999223 / 08/07/2009
page 24 of 34
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
☞
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.
➨
Use a hex key size 4 to loosen the six socket head screws
at the pump head and remove the upper housing (housing
cover with housing cover insert).
☞
Never remove parts using a spiky or sharp-edged tool (e.
g. screw driver), we recommend to use a rubber mallet or
compressed air (to be blown carefully into port).
➨
Use open-ended wrench (w/f 17) to loosen the union nut at
the hose connection next to the gas ballast.
➨
Use open ended wrench (w/f 14) to turn the elbow fitting
1/4 of a turn, disconnect the hose. Do not remove the el-
bow fitting from the pump head.
☞
Through reassembly a leak may result.
7.1 Cleaning and inspecting the pump heads