13
BÜCHI
Vac
V-500/V-501/V-502/V-503
3 Function
3.6
Function of the Vacuum Controllers
See separate operating instructions.
3.7
Function of the valve unit
Hose connection to 1
st
rotation evaporator
Hose connection to 2
nd
valve unit
Hose connection to vacuum controller
Hose connection to pump inlet (intake end)
Connecting cable to vacuum controller
When the unit is operated with only one rotation evaporator,
the outlet R2
is closed with a cap.
During operation, the valve unit is in a vacuum. Please
examine glass parts for splinters, cracks, stars.
Fig. 14: Valve unit
