8
BÜCHI Vacuum Controller B-720
• Install the two-way valve
between the vacuum pump
and the woulff bottle
.
• Connect the two-way valve to the socket V.
• Screw the cooling water valve
onto the water faucet
(remember the seal and screen).
• Insert the cooling water valve plug in the socket CW.
• Connect the cooling water hoses.
• Connect the B-720 to the power supply.
• Switch on the B-720.
• Turn the water faucet on
and use the needle valve
to
adjust the flow through the condenser.
Water faucet
Woulff bottle trap
Needle valve
Cooling water valve
Vacuum pump
Two-way valve
4.2 Installation with a two-way valve and a
cooling water valve
4 Putting into operation
Figure 8: The B-720 with a two-way valve and a cooling water valve
4.3 Installation with a B-764 water jet pump
• Attach the B-764 water jet pump
to the water faucet
.
• Insert the valve plug in the socket V.
• Fully open the water faucet
.
• Connect the cooling water hoses.
• Connect the B-720 to the power supply.
• Switch on the B-720.
• Turn on the water faucet .
Water faucet
Woulff bottle trap
B-764 water jet pump
Water faucet
Figure 9: The B-720 with a B-764 water jet pump
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