Graco SaniForce STU Operation page 20

Controls and Connections
Symbol Description Description Description
Ref. Ref. Ref. Symbol Symbol
— — —
J
Ram Ram Down Ram
Controls the air pressure supplied to the cylinders for moving downward.
— — —
K Control Panel
Control Control
Connect a clean, dry air supply to this valve for the controls. This valve will
supply air to control valve pilots, air assist, and the inflatable seal.
NOTE: It is recommended that the Control Panel Air Supply be separate from NOTE: NOTE:
the Pump Air Supply to avoid the high air consumption of pumps from starving
the control pilots. Use only clean, dry air.
— — —
L Pump Air
Pump Pump
Connect a clean, dry air supply to this valve for the pumps. See the specific
pump instruction manual for minimum and maximum pressure and flow
requirements. Use only clean, dry air.
Air Assist Assist Port
M Air Air
Route hose through the hose block on the side of the frame and through holes
in the support plate to the check valve (B1) in the center of the ram plate. Use
the provided 172-inch hose.
N Pump Air Pump Pump
Connect to supply air to pump manifold (FF) ports. Route hoses through the
hose block on the side of the frame. Use the three provided 109-inch hoses.
Connect the pump manifold (GG) ports to the pump air motors.
P
Cylinder Down Cylinder Cylinder
Connect to the down pressure port (DD) on the cylinder distribution manifold
on the top side of the crossbar.
R
Cylinder Cylinder Up Cylinder
Connect 1/2 in. tube to the pilot check valve, V6–IN (R1) located on the side
of the frame.
S Pilot Signal
Pilot Pilot
Connect 3/8 in. tube to the pilot port (S1) on the pilot check valve (V6) located
on the side of the frame.
T Seal Inflation
Seal Seal
Route the hose through the hose block on the side of the frame and through
holes in the support plate to the inflation tube (A1) of the inflatable seal. Use
the provided 172-inch hose.
— — —
U Cylinder Exhaust
Cylinder Cylinder
Movement of the ram plate will exhaust return side of the ram cylinders
through this port.
— — —
V Pump Pump Pressure Pump
Whenever pumps are stopped, the air supply pressure to the pump distribution
manifold and the pump air inlets is dumped through this port.
To avoid damage to the pneumatic control equipment caused by construction debris, dirt, and
*
metal fragments, thoroughly clean out all air supply lines before connecting to this equipment.
20
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Down Regulator Down Regulator Regulator
Panel Air Air Supply Supply Ball Ball Valve*
Panel Air Supply Ball
Air Supply Supply Ball Ball Valve* Valve*
Air Supply Ball Valve*
Port
Assist Port
Air Air Supply Supply Supply Ports Ports Ports (3 provided)
Down Down Port Port Port
Up Up Port Port Port
Signal Port Port
Signal Port
Inflation Port Port
Inflation Port
Exhaust Port Port
Exhaust Port
Pressure Pressure Dump Dump Dump Port Port Port
Triplex Sales
Valve*
Valve*
3A5416L