Instruction Manual

5-8 Power-up and Testing

5.7 Pneumatics

To check the function of the Main Air Regulator and Gauge:

1. Locate Main Air Regulator at the rear of the dispensing system (

Figure 5-7).

2. Rotate the Main Air Regulator counterclockwise until the Main Air Gauge registers 0 psi.

3. Rotate it clockwise until the Main Air Gauge registers 85-90 psi (586-620 kPa).

! If the Main Air Gauge fails to register pressure, verify that the dispensing system is

connected to the facility air source.

" NOTE The regulator assembly is equipped with a relief valve to protect the system components.

Increasing the pressure above 95 psi (655 kPa) may trigger the relief valve. If so, reduce

the air pressure below 95 psi.

4. Monitor the Main Air Gauge to make sure that pressure builds at a steady rate. Watch for

dropping pressure indicating an air leak.

! If there is an air leak, identify the source, shut off the facility air, and fix the leak before

proceeding.

TIP For accurate pressure adjustment, lower the pressure below the desired level and then

increase to the desired pressure.

Item Description Item Description

1 Main Air Regulator 3 Pressure Relief Valve

2 Main Air Pressure Gauge 4 Main Air Inlet

Figure 5-7 Main Air Regulator and Gauge