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Component Information
This manual provides information only for the Pump
Function Module System and the Optional Pump Con-
trol Module Kit. Specific information concerning
safety, setup, operation, maintenance and repair is
contained in other instruction manuals supplied
with the Ram System. Please refer to them for
detailed information.
Pump Function Module System
Description
Each air-powered ram pushes a follower plate into a
drum of material, while the pump removes material from
the drum and pushes it through a supply hose to a cus-
tomer-supplied header. Material flows through the
header to individual dispense drops.
The Pump Function Module System monitors and con-
trols system functions and outputs a signal from the
module system through the cell communications cable
to the controlling equipment. The standard information
sent from the Pump Function Module Control Sys-
tem through the communications cable must be
interpreted by the monitoring/controlling system
(cell controller) being used that is supplied by oth-
ers. An optional controlling system (234597) can be
ordered through Graco.
Optional Pump Control Module
Description
The Optional Pump Control Module interprets the stan-
dard information signal sent by the Pump Function Mod-
ule System through the Optional Pump Control Cable.
The Optional Pump Control Module displays system
data, such as pump status, input/output status, and
depressurization status; and allows remote control of
the tandem bulk pump unloader system. An Optional
Pump Control Cable (234596) is also available.
310766E
WARNING
A main air bleed valve and pump air bleed valve are
included with the equipment. These items help reduce
the risk of serious injury, including fluid injection and
splashing of fluid in the eyes or on the skin, and injury
from moving parts if you are adjusting or repairing the
pump.
The main air bleed valve shuts off and relieves the air
to the pump and ram. The ram will hold pressure if the
ram director valve is in the horizontal (neutral) position.
To relieve air pressure in the ram, close the main air
bleed valve and move the director valve to DOWN. The
ram will slowly drop.
The pump air bleed valve relieves air trapped between
it and the pump after the air is shut off. Trapped air can
cause the pump to cycle unexpectedly. Locate the
valve close to the pump.
The fluid drain valve assists in relieving fluid pressure
in the displacement pump, hose, and gun.
Triggering the gun to relieve pressure may not be suffi-
cient.
Component Information
5
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