Fluid Circulation
Fluid Circulation

Circulation Through Reactor

NOTICE
Do not circulate fluid containinga blowing agent
without consulting with your material supplier
regarding fluid temperature limits.
To circulate throughgun manifold and preheat hose,
see Circulation ThroughG un Manifold,page 60.
1. Follow Startup, page 55.
To avoid injection injuryand splashing, do not
install shutoffs downstream of the PRESSURE
RELIEF/SPRAY valve outlets (BA, BB). The
valves function as overpressure reliefvalves
when set to SPRAY . Lines must be
open so valves can automatically relieve
pressure when machine is operating.
2. SeeTypical 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 102.
3. Set PRESSURE RELIEF/SPRAY valves (SA,
SB) to PRESSURE RELIEF/CIRCULATION .
SA SB
GA GB
4. Set temperaturetargets. SeeTargets, page 50.
5. Press to circulate fluid in jog mode until
A and B temperatures reach targets. See
Jog Mode, page 60 for more informationabout
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 .
SB
SA
GA GB
3A1705J 59