Fluid Circulation; Circulation Through Reactor - Graco Reactor H-40 Operation

Fluid Circulation

Circulation Through Reactor

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 37.
1. Load fluid with feed pumps, page 27.
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 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.
36
3. Set PRESSURE RELIEF/SPRAY valves
(SA, SB) to PRESSURE RELIEF/CIRCU-
LATION
SA
4. Turn main power ON
5. Set temperature targets, see page 28. Turn
A
on and
. Do not turn on
.
unless hoses are already loaded with fluid.
6. Press
7. Before starting motor, reduce hydraulic
pressure to the minimum required to circu-
late fluid until
reach targets.
8. Press motor
pumps. Circulate fluid at lowest possible
pressure until temperatures reach targets.
Fluid Circulation
.
.
B
heat zones by pressing
heat zone
to display actual temperatures.
A
B
and temperatures
-
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to start motor and
SB
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