Nordson VersaBlue VA - Material Pressure too High; Material Pressure too Low; Incorrect Motor Rotation in Key-To-Line Mode

Troubleshooting
6‐19
P/N 213828_11
 2014 Nordson Corporation
VersaBlue_PPA
Material Pressure too High
Possible cause Possible fault / troubleshooting Corrective action
1. Safety valve or
pressure control
valve dirty and thus
blocked
- 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
Possible cause Possible fault / troubleshooting Corrective action
1. Gear 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
Incorrect Motor Rotation in Key-to-line Mode
Possible cause Possible fault / troubleshooting Corrective action
1. Line speed signal
fluctuates during
constant machine
speed
Encoder defective or loose contact Replace
Drive element (e.g. belt) slips Eliminate slip