Graco H50 Manual De Usuario
Fluid Circulation
40
312062W
Fluid Circulation
Circulation Through Reactor
To circulate through gun manifold and preheat
hose, see page 41.
hose, see page 41.
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.
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.
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.
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-
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.
cally relieve pressure when machine is oper-
ating.
ti9879a
SA
SB
A
B
A
B
-
ti7732a