Graco Uni-Drum Instructions Manual page 15

Pneumatic Logic Panel Switches and Indicators
Use the table and F . 4 when operating the switches and reading the indicators on the Pneumatic Logic Panel (G).
IG
Ref. Button/Switch/Guage
AA PUMP NO. 1 PRESSURE Air Gauge
AB PUMP NO. 2 PRESSURE Air Gauge
AC PUMP NO. 1 REGULATOR Control Knob
AD FOLLOWER VENT Directional Valve
AE PUMP NO. 2 REGULATOR Control Knob
AF RAM UP Pushbutton
RAM POSITION
AG
Switch
AH Panel Air Inlet Valve
AJ RAM UP Air Regulator
AK RAM DOWN Air Regulator
AL R3 Regulator
309028ZAT
Indicates the air outlet pressure setting from Pump No. 1.
Indicates the air outlet pressure setting from Pump No. 2.
Controls Pump speed and outlet pressure by adjusting the
air pressure to Pump No. 1.
Opens and closes the vent that relieves air pressure from
the Follower Plate (D).
Controls Pump speed and outlet pressure by adjusting the
air pressure to Pump No. 2.
Raises the Follower Plate (D) when the RAM POSITION
Switch (AG) is set to RAISE.
RAISE Allows the Follower Plate (D) to raise.
HOLD/NEUTRAL Holds the Follower Plate (D) in the current position.
LOWER Lowers the Follower Plate (D).
Opens air supply line to the Pneumatic Logic Panel (G).
Controls the air pressure used to raise the ram assembly.
Controls the air pressure used to lower the ram assembly.
Maintains air pressure on top of the ram cylinders to
prevent the Follower Plate (D) from raising too quickly out
of the drum.
Component Identification
What it Does
15