Fluid Circulation
36
Fluid Circulation
Circulation Through Reactor
To circulate through gun manifold and preheat
hose, see page 37.
1. Load fluid with feed pumps, page 27.
2. See Typical Installation, with circulation,
page 12. 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 45.
3. Set PRESSURE RELIEF/SPRAY valves
(SA, SB) to PRESSURE RELIEF/CIRCU-
LATION .
4. Turn main power ON .
5. Set temperature targets, see page 28. 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 temperatures
reach targets.
8. Press motor to start motor and
pumps. Circulate fluid at lowest possible
pressure until temperatures reach targets.
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
-
ti7732a
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