Fluid Circulation
Fluid Circulation
Circulation Through Reactor 3. Set PRESSURE RELIEF/SPRAY valves (SA, SB) to PRESSURE RELIEF/CIRCU-
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 page 41.
1. Follow Startup procedures, page 30.
Do not install shutoffs downstream of the PRESSURE RELIEF/SPRAY valve outlets (BA, BB). The valves function as overpres-
sure relief valves when set to SPRAY 
. Lines must be open so valves can automati- cally relieve pressure when machine is oper- ating.
2.See Typical Installation, with circulation, page 14. 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 Data, page 49.
LATION .
SA
SB
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4. Turn main power ON | . |
5.Set temperature targets, see page 31. Turn on A and B heat zones by pressing
. Do not turn on 
heat zone unless hoses are already loaded with fluid.
6.Press 
to display actual temperatures.
7.Before starting motor, reduce hydraulic pressure to the minimum required to circu-
late fluid until A and B tempera- tures reach targets.
-
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8.Press motor 
to start motor and pumps. Circulate fluid at lowest possible pressure until temperatures reach targets.
9.Turn on 
heat zone by pressing 
.
40 | 312062W |