Nordson EP 30 Manual page 22

Hot melt application head EP 30
18
Troubleshooting Table
Problem
Application head
does not reach the
set temperature
Solenoid valves
do not switch
Application
pattern not exact
P/N 397191B
(contd.)
Possible cause
Heater cartridge(s) in
application head defective
Ambient temperature too low
Control unit not switched on
Connecting plug not plugged in
or too loose
Temperature not set precisely
on melter
Temperature of application
head not set precisely
Adhesive quantity/pressure not
set precisely
Distance between nozzle and
substrate incorrect
Control unit for solenoid valves
not programmed correctly
Nozzle polluted on outside
Nozzle polluted on inside
Nozzle damaged
Application quantity and
substrate processing speed not
attuned to one another
Adhesive unsuitable
Corrective action
Replace
Raise ambient temperature.
Switch on
Check that plug connections
are tight
Correct setting
Correct setting
Correct setting
Correct distance
Correct programming
Clean
Clean
Replace nozzle
Check settings; change so as to
be attuned to one another if
necessary
Ask manufacturer
EP 30
Refer to
− −
− −
Separate
manual
Control Unit
Page 6
Separate
manual
Melter
Page 9
Page 10
− −
Separate
manual
Control Unit
Page 14
Page 14
− −
− −
Data sheet
from
adhesive
manufacturer
E 2005 Nordson Corporation