Product manual

Troubleshooting
5-4
Part 1105120-01
E 2013 Nordson Corporation
Corrective ActionPossible CauseProblem
Fault 15:
FAULT POWER CTRL AT
LIMIT
Power control at limit.
System controller is unable
to regulate output.
Magnetrons have failed. Replace the magnetrons.
Low voltage to magnetrons. Transformer taps set incorrectly.
Check transformer in system
controller.
Fault 16:
FAULT LOW LAMPHEAD
PRESSURE
Pressure Fault
Lamphead air pressure is
below setpoint at selected
power setting.
External blower is off. Turn external blower on.
Internal blower failure. Check blower wiring, transformer,
fuse. Replace blower if necessary.
Air flow through lamphead is
restricted.
Remove any restrictions in lamphead
air flow.
Large pressure drop in external
blower ducting.
Correct restrictions in external blower
ductwork. Ducts must be sized
properly with minimum bends to
supply proper air pressure. If low
pressure faults persist, consider
mounting the blower closer to the
lamphead, increasing the duct size,
or increasing the blower size.
Pressure hose connected to wrong
port.
Check port connection. Refer to
page 3-18 for instructions.
Pressure port is blocked. Unblock the pressure port.
Damaged pressure hose. Check hose and replace if necessary.
Fault 17:
FAULT EXT INTERLOCK
Interlock Fault
MSTOP I/O open or under
voltage.
Open external interlock. Check all system interlocks and the
MSTOP connection. There must be
continuity between Pins 15 and 16 on
the rear panel Remote I/O connector.
I/O jumpers are set incorrectly
(DeviceNet capable system).
Verify that the jumper position
matches the interlock method. Make
sure 24Vdc is available to interlock
circuit.
24Vdc not being supplied to
interlock.
Check voltage and correct if
necessary.
Fault 18:
FAULT POWER UNIT
OVER TEMP
System controller
temperature is over 65 _C.
System controller cooling fans are
restricted or not operating.
Remove fan restrictions or replace
the fans. Make sure fans are rotating
in the correct direction.
Ambient temperature is above
specification.
Reduce the ambient temperature to
5−40 _C (41−104 _F).
Fault 19:
FAULT RF DETECTOR
MISSING
RF Fault.
System does not sense the
RF detector.
RF detector is not properly
connected.
Check the RF detector connections.
RF cable is damaged. Check the continuity of the RF cable.
Replace the cable if necessary. See
Figure 8-1, System Schematic.
RF detector is damaged. Replace the RF detector.
Continued...