Graco Reactor 2 Repair Parts page 27

Error Location
Error Error Location Location
P7AX
HCM
P7BX HCM
334946J
Type Description
Type Type Description Description
Pressure Imbalance
A High
Pressure Imbalance
B High
Cause Cause Cause Solution
Solution Solution
Pressure
Ensure material flow is
difference
equally restricted on both
between A and
material lines.
B material is
greater than the
defined value
Pressure
Ensure that the pressure
imbalance is
imbalance value, on the
defined too low
System Setup screen, is at
an acceptable maximum
pressure to prevent
unnecessary alarms and
abort dispenses.
Out of material Fill the tanks with
material.
Fluid leaking Check if heater and
from heater inlet PRESSURE RELIEF/SPRAY
rupture disk valve are plugged. Clear.
Replace rupture disk. Do
not replace with a pipe
plug.
Feed system Check feed pump and
defective hoses for blockage.
Check that feed pumps
have correct air pressure.
Pressure
Ensure material flow is
difference
equally restricted on both
between A and
material lines.
B material is
greater than the
defined value
Pressure
Ensure that the pressure
imbalance is
imbalance value, on the
defined too low System Setup screen, is at
an acceptable maximum
pressure to prevent
unnecessary alarms and
abort dispenses.
Out of material Fill the tanks with
material.
Fluid leaking
Check if heater and
from heater inlet
PRESSURE RELIEF/SPRAY
rupture disk
valve are plugged. Clear.
Replace rupture disk. Do
not replace with a pipe
plug.
Feed system Check feed pump and
defective hoses for blockage.
Check that feed pumps
have correct air pressure.
Troubleshooting
27