ITW Dynatec DM55 DynaDrum - Page 132

ITW Dynatec
Chapter 8
Troubleshooting
Page 132 DM55 DynaDrum PP V6, Manual No.21-18, Rev.2.19
Problem Possible Cause Solution
Pump will not run.
1. Unit is not in Ready mode.
2. Pump not enabled.
3. Missing pump enable contact
circuit jumper or remote
contact not closed.
4. Air pressure too low. Air
motor is stalled.
5. Unit not in Auto mode.
6. Solenoid is not energized.
7. Pump jammed.
8. Temperature set too low.
1. Allow unit to warm up.
2. At pump screen: enable the
pump.
3. Add pump enable circuit jumper
or close the remote contact.
4. Increase air motor pressure.
5. Start Auto mode.
6. Inspect solenoid circuit and
check for output. Replace
solenoid if required.
7. Disconnect pump from air motor
and check air motor.
Disassemble, repair and
reassemble either pump or air
motor as require.
8. Increase temperature.
Pump output too low.
1. Pump air motor pressure too
low.
2. Material viscosity too high.
3. Blockage in hose, applicator,
pump or manifold.
4. Excessive ram force into
drum is facing off liquid flow
to pump inlet.
5. Pump check valves are stuck
in open position.
6. Debris at inlet of pump.
1. Increase pressure.
2. Reduce material viscosity by
increasing temperature.
Change to a lower viscosity
material.
3. Disassemble, clean and
reassemble.
4. Reduce ram pressure.
5. Disassemble, clean and
reassemble.
6. Disassemble, clean and
reassemble.
Pump runs fast, but no
material flow.
1. Platen insufficiently purged.
2. Pump setting is exceeding the
platen melt rate.
3. Pump check valves are stuck
in open position.
4. Drum empty or incorrect drum
empty sensor position.
1. Complete purge cycle.
2. Reduce pump pressure or
increase operating temperature.
3. Disassemble, clean and
reassemble.
4. Raise sensor adjustment.
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