Heidolph ROTAVAC 20 - Manual (Page 28)

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.: 01-005-005-36-1
page 28 of 35 Translation of the original instructions
➨ Assemble catchpots with joint clips.
➨ Put head cover cowling on.
➨ Slide the head cover cowling in the grooves of the caps
and under the connection fasteners.
➨ Install the washers. Use a Torx driver T20 to attach the 4
screws holding the head cover cowling.
➨ Tighten the fillister head screws of the connection fasten-
ers with a Torx driver T20.
➨ Close the hinged covers.
Replace diaphragms and valves of the opposite side of the pump in the same
way!
If the pump does not achieve the ultimate vacuum:
- Whenever the diaphragms and valves have been replaced, a break-in period of several hours is
required before the pump achieves its ultimate vacuum.
- In case of an unusual noise, switch off pump immediately and check clamping disc positions.
If the specified ultimate vacuum is not achieved, and if this does not change after the break-in period:
Check hose connectors at pump head for leaks. If necessary recheck valve seats and diaphragms.