Pump speed display showing a
fault code
Troubleshooting
6-5
Part 1120277_01
E 2012 Nordson Corporation
Motor/Piston Control Faults
Table 6-2 provides a list of motor- and piston-control related faults and
problems. Fault codes are displayed on the pump speed display.
Table 6-2 Motor/Pistol Control Faults and Troubleshooting
Fault Affect on Melter Possible Cause Corrective Action
dIS (Pump Disable) Pump and heaters turn off;
F9/1 melter fault code
displayed on right display
Reservoir empty but pump
continues to turn the number
of rotations set in motor
control parameter dLy (refer
to Setting Up the Motor
Control in Section 3,
Installation).
Ensure that adhesive is
present in the hopper and
allow time for the adhesive to
melt into the reservoir.
Unless it is critical that the
unit turn off immediately
when the reservoir is empty,
set the dLy value higher to
prevent this fault condition.
FLt
(Motor Thermostat
Fault)
Motor turns off Motor cable disconnected or
motor temperature too high
Ensure that motor cable is
connected. Ensure that
motor is not operating above
maximum rpm, hydraulic
pressure, or ambient
temperature.
no P1P
(Lid Not Closed)
Piston cannot be lowered Lid not closed Close the lid.
N/A Displayed rpms do not
match motor speed
Pump speed display not
calibrated
Calibrate the pump speed
display. Refer to Calibrating
the Pump Speed Display in
Section 5, Maintenance.
Continued...
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