Graco HFRL, Setup And Operation Manual

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Dispense Requests and Valves Overview
3A2175Z 29
Dispense Request/Valve Connection
If the user intends to request dispenses to the HFR using an automated control interface, a contact closure output
must be supplied between the indicated wires using a Graco 120995 cable assembly connected to the foot-switch
input near the material manifold, as illustrated in F
IG
. 11 (Dispense valve configurations 2 and 3).
If a dispense valve solenoid needs installed to control the dispense valve (Dispense valve configuration 2), a Graco
24C757 can be installed onto the side of the HFR. After it is mounted, connect the valve solenoid to the 2B (or 2A)
cable connection on the side of the MCM, under the HFR blue cover.
If configuring the HFR to dispense valve configuration 1 (Stall at pressure), the described foot-switch contact clo -
sure connection and the electrical connection between the HFR and a dispense valve solenoid will need to be
removed. The user will be responsible for directly controlling the opening and closing of the dispense valve.
F
IG
. 11
F
IG
. 12