Operation; Prepare The Operator; Overview; General Functional Description - Graco Uni-Drum Instructions Manual

Operation

Prepare the Operator

All persons who operate the equipment must be trained
in the safe, efficient operation of all system components
as well as the proper handling of all fluids. All operators
must thoroughly read all instruction manuals, tags, and
labels before operating the equipment.

Overview

The Uni-Drum Supply System uses two air driven
reciprocating Pumps (C) on the LH Supply Unit (A) and
two air driven reciprocating Pumps (C) on the RH
Supply Unit (B). Each Supply Unit Pumps material from
a 300 gallon (1200 liter) drum.

General Functional Description

The LH and RH Supply Units can operate at the same
time or as independent units. Generally, the Uni-Drum
Supply System is setup to operate as redundant units.
This means that the RH Supply Unit is held in reserve
on standby until the drum underneath the LH Supply
Unit has been emptied, and vice versa.
Operating a redundant system allows the operator to
maintain a continuous supply of material without
interruption. The operator is afforded sufficient time to
replace an empty drum at one Supply Unit while the
drum at the other Supply Unit is being emptied.

System Startup

There are a series of steps that must be followed in
sequential order to startup the system.

System Operation

Depending upon the system setup, at any time during
operation, the operator can:
• Stop the Pumps and relieve ram pressure at the LH
Supply Unit (A).
• Stop the Pumps and relieve ram pressure at the RH
Supply Unit (B).
• Shutdown the system.
309028ZAT
At the Supply Unit (A, B), the Follower Plate (D) must be
raised to load the drum into the Supply Unit. The
Follower Plate (D) is lowered by the operator directly
into the drum. The Pumps are turned on, the Follower
Plate (D) is pressurized, and material is pumped from
the drum through the outlet ports on the Pumps via a
supply hose to one or more targeted applications.

Supply Unit Operation

The Uni-Drum Supply System can be setup to alternate
between the LH and RH Supply Units. This dual supply
system setup (controlled by others) virtually eliminates
material replenishment downtime.
The Uni-Drum Supply System allows the operator to
load the material drum into the RH Supply Unit (B) while
the LH Supply Unit (A) drum is being emptied. When the
Supply Unit changeover occurs, the operator unloads
the empty drum at the LH Supply Unit (A) while the RH
Supply Unit (B) drum is being emptied. The cycle is
repeated as many times as needed.

System Shutdown

For system shutdown, the operator turns off the Pumps
(C) and depressurizes the system. Depending upon the
type of material, the operator may choose to raise the
Follower Plate (D) from the drum or keep the Follower
Plate (D) lowered in the drum to prevent the material
from being contaminated. Some materials will harden or
congeal when exposed to air or used past their shelf life.
Material should be kept covered when it is not being
used and uncovered when it is ready to use.
Operation
27