Chemglass CG-4600-01 - Manual (Page 3)

3
Section 1 Quick Operating Instructions
1. Connect the Regulator to the Equipment
Connect the vacuum pump (or the vacuum source) to the tube marked “Inlet”. Note:
When the Digital Vacuum Regulator (DVR) is used on equipment smaller than a Rotovap, a needle valve is
needed for accurate regulation of pressure. Place the valve on the inlet port (see Section 3.2).
Connect the instrument in which the vacuum is to be regulated (i.e., rotary evaporator, distillation setup,
etc.) to the tube marked “Outlet”. There should be no restrictions (i.e. valves, stopcocks) between the Outlet
port and the equipment you’re regulating. Best results are obtained when large diameter tubing is used to
make this connection.
2. Turn the Regulator On
1. Set the regulator selection switch to the
Off position.
2. If the unit is fit with a needle valve, turn
the valve until it’s fully closed.
3. Turn the regulator and vacuum pump on.
Regulator Selection Switch
3. Enter the Desired Pressure.
The default display of the meter is the
pressure in the equipment it’s attached to.
The desired pressure (or set point) is
entered by holding in the “*” button on the
front of the meter and simultaneously
pressing either the “▼” button to decrease
or the “▲” button to increase the set point.
The set point, which appears as a blinking
number, can be seen at any time by holding
in the “*” button.
8 0 1 0.
*
4. Move the Regulator Selection Switch to the METER Position. When set to the Meter position, the
regulator maintains the attached equipment at the set point pressure entered in step 3.
5. For Controllers Equipped with Needle Valves, open the valve until the equipment is evacuated at a
reasonable rate. When at the set point, adjust the valve for stable pressure regulation. Leave the needle valve
in this position for future use. Once the valve is set for a reasonable evacuation rate it doesn’t require further
adjustment.