BUCHI Encapsulator B-395 Pro - Manual (Page 44)

6 Operation
44 B-395 Pro Operation Manual, Version C
6 .6 Manual air pressure control
In the control unit the pressure is manually controlled by the pressure regulating valve, integrated in
the front panel of the control unit (see figure 6-2). Set the air pressure at a value which is 0.2 to 0.3 bar
higher then the maximal air pressure needed during the encapsulation procedure; but not higher then
1 bar. Turning the knob of the pressure regulating valve clockwise increases the pressure, counter-
clockwise decreases the pressure. The knob of the pressure regulating valve has two positions. If it
is pushed in, it is locked, if it is pulled out, it is unlocked. Turning the knob counter-clockwise reduces
the pressure via the self-venting system in the valve. The pressure is indicated on the touchscreen (see
screen 6-7).
NOTE
• The pressure of air or nitrogen entering the control unit on the rear panel of the Encapsulator
should be below 7 bar (100 psi). The prefered range is between 1.5 and 2 bar (20 to 30 psi).
• Be aware that the pressure regulation system reacts relatively slowly, because the displacement
of air in or out through the constriction valve is delayed.
• Do not leave the gas supply line on when the Encapsulator is not being used. The self-venting
system in the valve would drain the gas tank.
• The maximum pressure at the air outlet is 1.5 bar (20 psi). This value is controlled by an incorpo-
rated overpressure safety valve, which opens at 1.5 bar. However the working range is from 0 to
1 bar.
Figure 6-2: Air pressure regulating system for manual
air pressure control - turning the pressure regulating
valve clockwise
increases the pressure.