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Fluid Circulation
40 312062W
Fluid Circulation
Circulation Through Reactor
To circulate through gun manifold and preheat
hose, see page 41.
1. Follow Startup procedures, page 30.
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.
3. Set PRESSURE RELIEF/SPRAY valves
(SA, SB) to PRESSURE RELIEF/CIRCU-
LATION .
4. Turn main power ON .
5. Set temperature targets, see page 31. Turn
on and 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 and tempera-
tures reach targets.
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 .
Do not circulate fluid containing a blowing
agent without consulting with your material
supplier regarding fluid temperature limits.
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.
ti9879a
SA
SB
A
B
A
B
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ti7732a