LA 302 Pressure Controller Manual.pdf - 第40页
Maintenance 5-2 P/N 71 19797A 2006 Nordson Corporation LA 302 Edition 06/0 6 T roubleshooting (contd.) Problem Possible Cause Corrective Action Refer to Bead too thin at low speed Current for minimum pressure too low Inc…
Maintenance
5-1
P/N 7119797A
2006 Nordson Corporation
LA 302
Edition 06/06
Section 5
Maintenance
WARNING: Allow only qualified personnel to perform the following tasks.
Observe and follow the safety instructions in this document and all other
related documentation.
Maintenance
The unit requires no maintenance. Check all cables regularly for damage.
Replace damaged cables immediately!
Troubleshooting
Problem Possible Cause Corrective Action Refer to
Unit not
functioning
Mains plug not connected Connect mains plug Installation
Unit is not switched on Switch on unit Operation
Mains fuses defective Check mains fuses, replace if
necessary
Repair
No glue
application
Adhesive gun does not switch
Adhesive gun solenoid valve not
connected to LA 302
Installation
Mode switch (B) not in left position Operation
No glue
application, LED
(3) illuminated
Production speed too low Increase production speed Operation
No glue
application, LED
(2) illuminated
Solenoid valve on adhesive
gun defective
Replace adhesive gun Installation
Too little glue
applied, LED (4)
and/or LED (5)
illuminated
Proportional pressure control
valve defective or not
connected
Replace or connect proportional
pressure control valve
Installation
Maintenance
5-2
P/N 7119797A
2006 Nordson Corporation
LA 302
Edition 06/06
Troubleshooting
(contd.)
Problem Possible Cause Corrective Action Refer to
Bead too thin at
low speed
Current for minimum pressure
too low
Increase current Operation
Bead too thin at
high speed
Current for maximum pressure
too low
Increase current Operation
Bead too thick at
low speed
Current for minimum pressure
too high
Reduce current Operation
Bead too thick at
high speed
Current for maximum pressure
too high
Reduce current Operation
Maintenance
5-3
P/N 7119797A
2006 Nordson Corporation
LA 302
Edition 06/06
Repair
NOTE: Repairs to be performed by the customer are limited to replacing
defective fuses. Any other repair work should be performed by Nordson
customer service.
NOTE: Only original Nordson spare parts may be used.
Problem
Possible Cause Corrective Action Refer to
Unit not
functioning
Mains plug not connected Connect mains plug Installation
Unit is not switched on Switch on unit Operation
Mains fuses defective Check mains fuses, replace if
necessary
Below
2
3
1
4
Fig. 5-1 Mains switch and fuses
1 Mains switch
2 Fuse carrier slid into place
3 Fuse carrier 4 Cover for fuse compartment
NOTE: The fuse can be pressed out the side of the fuse carrier.