User guide
page 93 of 102
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 ulti-
mate vacuum.
- In case of an unusual noise, switch off pump immediately and check
clamping disc positions.
If the specied ultimate vacuum is not achieved, and if this does not
change after the break-in period:
Check hose connectors at pump heads for leaks. If necessary recheck
valve seats and diaphragms.
➨ Slip the PTFE tube onto the hose connec-
tion of the vacuum connection at the con-
troller. Loosen the union nut at the vacuum
connection of the controller.
➨ Secure with union nut. Tighten the union nut
rmly nger-tight.