General Description - Graco Uni-Drum Instructions Manual

Component Identification

General Description

A general description of the Uni-Drum Supply System
helps the installers and operators become familiar with
the system components. Contact your Graco distributor
for help in choosing accessories to suit your particular
needs.
Before you install the system, you should be familiar
with the parts described in the following paragraphs.
System Components
See F . 1 on page 10.
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• Uni-Drum Supply Unit (A,B) is usually setup to
alternate the material supply operation between the
left hand (LH) and right hand (RH) Supply Units,
which is accomplished using a combination of
robotic software programming (provided by others)
and manual operators. Drum changeovers occur
after the Follower Plate (D) has reached its preset
low limit level in the drum. Alternating between
Supply Units eliminates the downtime that is usually
expended unloading an empty drum and reloading a
full drum.
- LH Supply Unit (A) accommodates one 300
gallon (1200 liter) drum. The LH Supply Unit
has a local Pneumatic Logic Panel (G) and
Junction Box Panel (H).
- RH Supply Unit (B) accommodates one 300
gallon (1200 liter) drum. The RH Supply Unit
has a local Pneumatic Logic Panel (G) and
Junction Box Panel (H).
• The two Dura-Flo™ 1800 Pumps (C) have XL
10000™ air motors. The Pumps evacuate material
from the drum.
• The Follower Plate (D) is connected to the ram
assembly and is designed to apply an even amount
of pressure to the material in the drum. With the
Follower Plate in its raised position, the operator
moves a drum inside the frame. The Follower Plate
is lowered directly on top of the material in the drum.
When pressure is applied to the Follower Plate, the
material is pumped out of the drum through hoses,
which are attached to the Pump outlet ports. When
the drum is empty, the operator raises the Follower
Plate, removes the empty drum. The process is
repeated when another drum is ready to be
unloaded.
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• Pneumatic Panel Air Filter (F) filters air to the
Pneumatic Logic Panel (G). The 5 micron filter
removes particles, such as dust, moisture, foreign
matter and other contaminants from the
compressed air.
• The Safety Pins (M) are used to keep the ram from
lowering while in the fully raised position during
drum changes or maintenance of the supply
system.
• Main Air Shutoff Valve (P) is used to open or
shutoff the air supply to the entire Supply Unit (A,B).
Pneumatic Logic Panel (G)
See F . 4 on page 13 and F
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The Pneumatic Logic Panel (G) includes the following
system components. For more information, refer to the
Pneumatic Diagram on page 92.
• PUMP NO. 1 REGULATOR Control Knob (AC)
controls Pump speed and outlet pressure for Pump
No. 1 by adjusting the air pressure to the Pump.
• PUMP NO. 1 PRESSURE Air Gauge (AA) displays
the amount of air pressure supplied to Pump No. 1.
• PUMP NO. 2 REGULATOR Control Knob (AE)
controls Pump speed and outlet pressure for Pump
No. 2 by adjusting the air pressure to the Pump.
• PUMP NO. 2 PRESSURE Air Gauge (AB) displays
the amount of air pressure supplied to Pump No. 2.
• FOLLOWER VENT Directional Valve (AD) is
activated to open the vent to relieve container
pressure.
• RAM UP Pushbutton (AF) turns on air pressure to
raise the Follower Plate (D) when used in
conjunction with the RAM POSITION Switch (AG).
• The RAM POSITION Switch (AG) performs the
following three functions:
- Place the switch in the RAISE position to raise
the Follower Plate (D).
- Place the switch in the HOLD/NEUTRAL
position to hold the Follower Plate (D) in the
current position.
- Place the switch in the LOWER position to
lower the Follower Plate (D).
. 5 on page 14.
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