5-2
Preventive Maintenance
2. Daily maintenance
General maintenance
1. Keep the applicator clean at all times.
2. Keep the supply of hot melt material clean and free of contaminants.
Foreign particles in the hot melt adhesive can block the filter or
damage the pump. A plugged filter can shut down the system.
3. Clean all exterior gun surfaces. Accumulated hot melt material can
char and cause erratic gun operation.
Filter flushing
Flush the adhesive filter once a day unless operating experience
indicates that less frequent flushing is required.
WARNING: Risk of burns. Wear protective clothing/safety
goggles/gloves (P/N 902 514) during the following procedure.
1. Heat the system to operating temperature.
NOTE: The applicator must be at operating temperature to prevent
damage to the filter screen.
2. Reduce the pump air pressure to zero (0) at the regulator.
3. Trigger all gun(s) until the system has been relieved of pressurized
molten material.
n
0
WARNING: Before performing the next step, be sure that all
system pressure has been relieved to avoid spraying of
molten material.
4. Place a pan or other suitable waste container under the drain valve.
Using a screwdriver, open the manifold drain valve.
5. Increase the pump air pressure until adhesive material flows steadily
from the drain. Allow material to flow until it is clean and free from all
contaminants.
6. Shut off the input air pressure to the pump at the regul&or.
7. Close the manifold drain valve.
P/N 106 701A
41-2300SP
- Issued 1194
0 Nordson Corporation 1994
All Rights Reserved
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