Graco 970204 Instructions And Parts List page 10

Electrical Crossover Setup (Model 970205)
The electrical crossover is setup as shown in Fig. 4
and the Unloader Crossover (1) must be connected to
a 120 Volt, 60 Hz supply.
During system operation, as the ram approaches the
drum bottom, the top of the ram contacts the limit valve
switch. The switch shuts off the air to one ram, and
starts the other ram. This allows constant material flow
and changing out of material drums.
E
C
Fig. 4
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System Setup
Electrical Crossover Setup (Model 970205)
B
D
NOTE: The position of the empty level indicator kit (2)
on the ram determines when the ram air motor is
turned on and off. During operation, this position can
be adjusted as desired. See Fig. 4.
A
KEY
A Unloader Crossover
B Empty Level Indicator Kit (2)
C 3/4 in. npt Muffler
D Solenoid Valve
E 3/4 in. Hex Nipple
B
8584A