Fluid Circulation; Circulation Through Reactor - Graco 259079 Operation Manuals

Fluid Circulation

Circulation Through Reactor

NOTICE
Do not circulate fluid containing a blowing agent
without consulting with your material supplier
regarding fluid temperature limits.
To circulate through gun manifold and preheat hose,
see Circulation Through Gun Manifold, page 60.
1. Follow Startup, page 55.
To avoid injection injury and splashing, do not
install shutoffs downstream of the PRESSURE
RELIEF/SPRAY valve outlets (BA, BB). The
valves function as overpressure relief valves
when set to SPRAY
open so valves can automatically relieve
pressure when machine is operating.
2. See Typical Installation, with circulation, page 13.
Route circulation lines back to respective
component A or B supply drum. Use
hoses rated at the maximum working
pressure of this equipment. See
Technical Specifications, page 98.
3A1705E
. Lines must be
3. Set PRESSURE RELIEF/SPRAY valves (SA,
SB) to PRESSURE RELIEF/CIRCULATION
SA
4. Set temperature targets. See Targets, page 50.
5. Press to circulate fluid in jog mode until
A and B temperatures reach targets. See
Jog Mode, page 60 for more information about
jog mode.
6. Press to turn on the hose heat zone.
7. Turn on the A and B heat zones. Wait until the
fluid inlet valve temperature gauges (FV) reach
the minimum chemical temperature from the
supply drums.
8. Exit jog mode.
9. Set PRESSURE RELIEF/SPRAY valves (SA,
SB) to SPRAY
GA
SA
Fluid Circulation
GB
GA
SB
.
GB
SB
.
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