Fluid Circulation; Circulation Through Reactor - Graco Gusmer Reactor H-25 Operation

Fluid Circulation

Circulation Through Reactor

Do not circulate fluid containing a blowing agent with-
out consulting with your material supplier regarding
fluid temperature limits.
To circulate through gun manifold and preheat hose, see
page 31.
1.
Load fluid with feed pumps, page 22.
Do not install shutoffs downstream of the PRES-
SURE RELIEF/SPRAY valve outlets (BA, BB). The
valves function as overpressure relief valves when set
to SPRAY. Lines must be open so valves can auto-
matically relieve pressure when machine is operating.
2.
See Typical Installation, with circulation,
page 8. Route circulation lines back to respec-
tive component A or B supply drum. Use hoses
rated at the maximum working pressure of this
equipment. See Technical Data, page 37.
3.
Set PRESSURE RELIEF/SPRAY valves (SA,
SB) to PRESSURE RELIEF.
SA
4.
Turn main power ON
30
SB
ti7740a
.
5.
Set temperature targets, see page 23. Turn on
A
B
and
. Do not turn on
hoses are already loaded with fluid.
6.
Press to display actual temperatures.
7.
Before starting motor, reduce hydraulic pressure
to the minimum required to circulate fluid until
A
B
and
8.
Press motor
Circulate fluid at lowest possible pressure until
temperatures reach targets.
9.
Turn on heat zone by pressing
10.
Set PRESSURE RELIEF/SPRAY valves (SA,
SB) to SPRAY.
SA
Fluid Circulation
heat zones by pressing
heat zone unless
temperatures reach targets.
-
ti7732a
to start motor and pumps.
SB
ti7739a
311299C
.