Nordson PURBlue EC - Material Pressure too High

Troubleshooting
6-13
P/N 7135268B
E 2008 Nordson Corporation
PURBlue EC
Material Pressure too High
Problem Possible Cause Corrective Action
1. Safety valve or
pressure control
valve dirty and thus
blocked
− Safety valve: Replace
Pressure control valve: Disassemble
and clean or replace
2. Safety valve or
pressure control
valve defective
− Replace
3. Pressure control
valve set incorrectly
− Set to default
Material Pressure too Low
Problem Possible Cause Corrective Action
1. Pump is worn − Replace pump
2. Safety valve does not
close any more
− Replace
3. Pressure control
valve dirty and thus
clogged
− Disassemble and clean or replace
4. Pressure control
valve defective
− Replace
5. Pressure control
valve set incorrectly
− Set to default
Material Residue or Hardened Material in Tank
Problem Possible Cause Corrective Action
1. Tank setpoint
temperature set too
high
− Correct temperature setting
Material of low quality or not
appropriate for application
(temperature resistance poor)
Consult material supplier
2. No inert gas − Refer to No Inert Gas
3. Inert gas interval set
incorrectly
− Check settings on timer relay
4. Unsuitable inert gas Consult material supplier