Graco UniDrum C59784 Instructions And Parts List page 12

Component Identification
Pneumatic Logic Panel Switches and Indicators
Use the table and F . 2 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 Air On
AD Pump Air Off
AE PUMP NO. 1 REGULATOR Control Knob
AF FOLLOWER VENT Directional Valve
AG PUMP NO. 2 REGULATOR Control Knob
AH RAM UP Pushbutton
RAM POSITION
AJ
Switch
AK Panel Air Inlet Valve
AL DRUM EMPTY Indicator
AM DRUM IN POSITION Indicator
AN RAM UP Air Regulator
AP RAM DOWN Air Regulator
AR R3 Regulator
12
Indicates the air outlet pressure setting from Pump No. 1.
Indicates the air outlet pressure setting from Pump No. 2.
Starts Pumps
Shuts Off Pumps
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).
Indicates low fluid level in the drum. Signals change to
other ram in tandem systems.
Indicates the presence of Magnadrum under the Follower
Plate (D).
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.
What it Does
309169ZAF