Motor Chain And Sprocket Check - Nordson 3400 Manual

Troubleshooting Procedures
E 2000 Nordson Corporation
All rights reserved
Use these procedures as directed by the troubleshooting tables to further
troubleshoot pump-operation problems.

Motor Chain and Sprocket Check

1. Remove the drive cover.
2. Check the chain and sprocket:
S
Chain misaligned or sprocket worn: realign the chain or replace
the sprocket.
S
Chain and sprocket okay: continue to the next step.
3. Disassemble the chain by taking out the removable chain link. Jog
the pump motor and see if the speed reducer output shaft rotates.
S
Shaft does not rotate: Replace the speed reducer.
S
Shaft rotates: continue to the next step.
4. Manually rotate the sprocket above the gear pump by pulling on the
chain.
S
Drive shaft does not rotate: drain the tank so the adhesive level is
lower than the pump mount. Remove the pump. Manually rotate
the sprocket. If the sprocket rotates, replace the pump. If the
sprocket does not rotate, replace the bearings and pack with
grease.
S
Drive shaft rotates: drain the tank so the adhesive level is lower
than the pump mount. Remove the pump. Check the drive shaft
coupling. If the coupling is worn or damaged, replace it. If the
coupling is okay, replace the pump.
41-3000
Issued 11/00
B 2-9
Pump
B2EN-02-[3-PUMP]-5