User guide

32 Operation
3.10.2 Adjusting the Valve and Fluid Pressure
To adjust the valve and fluid pressure:
1. Locate the fluid and valve air pressure regulator adjustment knobs on the front control panel
(Figure 3-12).
TIP For accurate pressure adjustment, lower the pressure below the desired level
and then increase to the desired pressure.
2. Rotate the adjustment knob counterclockwise until the gauge registers 0 psi.
3. Rotate the knob clockwise until the associated gauge registers the air pressure value (psi or
kPa) required by the dispensing application.
 NOTE Valve and fluid pressure settings depend on the fluid being dispensed and
dispensing valve being used. Refer to the manual applicable to the dispensing
valve on the system.
4. Monitor the valve air pressure gauge to make sure that pressure builds at a steady rate. A
drop in air pressure can indicate an air leak.
 If there is an air leak, identify the source, shut off the facility air, and repair the leak
before proceeding.
Figure 3-12 Front Control Panel
3.10.3 Adjusting the Vacuum Control
The vacuum control allows low viscosity fluids to be consistently dispensed without dripping between
cycles. The vacuum exerts a negative pressure (suckback) on the fluid, thereby decreasing dripping.
To adjust the vacuum control:
1. Turn the vacuum control adjustment knob counterclockwise to increase vacuum pressure
and decrease dripping.
2. Turn the knob clockwise to decrease vacuum pressure.
Vacuum Control
Adjustment Knob
Fluid Pressure
Regulator and
Gauge
Valve Air Pressure
Regulator and Gauge