Troubleshooting
6-2
Part 1061253B
E 2006 Nordson Corporation
General Troubleshooting (contd)
Problem Possible Cause Corrective Action
2. Pressure Fault
Fault Message:
F PRSW (contd)
Pressure sensor has failed The pressure sensor is a normally
open switch that closes with 7-in. wc
static pressure. Make sure both the
external and internal port of the
switch are open and there are no
obstructions. If there are no
obstructions and the blower is
operating correctly, replace the
switch.
Pressure drop in remote blower
ducting is too great
Ducting to the remote blower should
be large enough with minimum of
sharp bends to supply adequate
ventilation. If pressure faults have
consistently been a problem, you
may want to consider mounting the
remote blower closer to the
lamphead or increasing the duct size
or blower.
3. Magnetron Current
Fault
(Normal magnetron
current is 850 ma +
5% at 100% power.)
Fault Message:
F POWR
The current in one or both
magnetrons has dropped below
200 ma for a duration of more than
600 ms
Reset the lamphead and restart the
system. If the problem still exists
there may be a magnetron failure.
Magnetron current is detected
when unit is off
Reset the lamphead and restart the
system. If the problem still exists
there may be a magnetron failure.
4. Interlock Fault
Fault Message:
F LOCK
Open external interlock Check all system interlocks.
Continued...
