Nordson ProBlue P4 Customer Product Manual page 161

Problem
Is the air supply to the melter
turned off or is the plant air
−
pressure low?
+
Turn on or adjust the plant air
pressure.
Is the operating air pressure set
correctly?
−
Refer to Section 4.
+
Is air being supplied to the top of
the pump?
−
+
Continued
on next
page....
Is 24 VDC being supplied to the
solenoid valve (wire harness
−
leads 9 and 10)?
+
Replace the pneumatic
assembly.
P/N 1028307.
T.4.2
Starting conditions:
No faults >
Ready LED is illuminated >
Adjust the operating air
No hot melt output from all guns >
pressure for the current
Pump has stopped >
manufacturing process.
Pump LED is illuminated >
Tank set-point temperature is OK >
Pump is not controlled by a remote input
Are the yellow and green air lines
to the pneumatic assembly
−
connected properly?
See Figure 6-4.
+
Do the wires at Pins 9 and 10 on
the J7 wire harness lack
−
continuity?
Connect securely. See Figure
6-2.
+
Replace the J7 wire harness.
P/N 1024600.
Connect securely.
Replace the main board.
P4/P7 − P/N 1028322.
P10 − P/N 028323.