Nordson ProBlue P4 Manuel page 159

Quick check: Save settings and reset the melter to factory default settings. If
the melter functions normally, isolate the input or output problem.
Quick check: Manually activating the heater key or the pump key will override
and eliminate remote inputs as the cause of a down condition.
Has the pump stopped?
-
+
Go to T.4.1
Is the pump cycling fast?
-
+
Is there sufficient air pressure to
the pump (greater than 0.7 bar/10
-
psi)?
+
Continued on
next page
Is hot melt leaking from the
system somewhere between the
-
manifold and the guns?
+
Locate and repair the leak.
Adjust the air pressure.
T.4
Starting conditions:
No faults >
Ready LED is illuminated >
No hot melt output from all guns
The pump piston ball valve is
stuck open.
Refer to Appendix D.