DuraBlue II Customer Product Manual.pdf - 第137页

Troubleshooting 6-25 Part 1126931_01  2018 Nordson Corporation Material Pressure Too High Possible Cause Possible Fault / T roubleshooting Corrective Action 1. Pressure control valve dirty and thus blocked — Disassemble…

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Troubleshooting
6-24
Part 1126931_01
2018 Nordson Corporation
No Material (Motor Rotating)
Possible Cause Possible Fault / Troubleshooting Corrective Action
1. Tank empty — Fill tank
2. Filter cartridge
clogged
— Clean or replace filter screen
3. Material supply hole
to pump or pump
suction hole clogged
— Detach pump and clean supply hole
or suction hole
4. Pressure control
valve defective
— Replace pressure control valve
5. Safety valve defective — Replace safety valve
6. Pump defective — Replace pump
7. Pressure control
valve setting too low
— Adjust pressure control valve
Too Little Material
Possible Cause Possible Fault / Troubleshooting Corrective Action
1. Material supply hole
to pump or pump
suction hole partially
clogged
— Detach pump and clean supply hole
or suction hole
2. Filter cartridge partly
clogged
— Clean or replace filter screen
3. Pressure control
valve defective
— Clean or replace
4. Processing
temperature set too
low
— Correct temperature setting
5. Pump block is worn — Replace pump
6. Safety valve defective — Replace safety valve
7. Pump defective — Replace pump
8. Pressure control
valve setting too low
— Adjust pressure control valve
Troubleshooting
6-25
Part 1126931_01
2018 Nordson Corporation
Material Pressure Too High
Possible Cause Possible Fault / Troubleshooting Corrective Action
1. Pressure control
valve dirty and thus
blocked
— Disassemble and clean or replace
2. 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. Pump is worn — Replace pump
2. Pressure control
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
Troubleshooting
6-26
Part 1126931_01
2018 Nordson Corporation
Material Residue in Tank
Possible Cause Possible Fault / Troubleshooting 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
Material Hardens in Tank
Possible Cause Possible Fault / Troubleshooting Corrective Action
1. Tank setpoint
temperature set too
high/too low
— Correct temperature setting
Others
Problem Possible Cause Corrective Action
1. Leakage at pump
shaft seal
Pump shaft seal is worn Tighten the gland bolt
— Replace pump
2. Material pressure too
low, output quantity
too low
Pump is worn Replace pump
3. Pump blocked
Processed material too cold Correct temperature setting (observe
data sheet of material manufacturer)
Foreign material in pump Replace pump
4. Leakage at gun
during heat‐up phase
Safety valve does not open
(expansion pressure)
Replace safety valve