Product manual

Series B900-N and B900SW-N Manifold Mounted Electric Guns
23
E 2006 Nordson Corporation
Part 1041221B
Problem Possible Cause Corrective Action
3. Adhesive
output too
high
Defective RTD Unplug the gun cordset and
verify that the RTD connections
are secure. If the connections
are secure, check the continuity
of the RTD across the RTD pins
on the cordset. If there is no
continuity, replace the RTD.
Refer to the wiring diagram.
Module stroke not properly
adjusted
Adjust the module stroke, Refer
to Adjust the Module Stroke
under Installation.
Melter flow control valve set too
high
Decrease the system hydraulic
pressure using the flow control
valve. If there is no change,
inspect the flow control valve for
proper operation. Replace the
valve as necessary.
Adhesive viscosity too low Decrease the overall system
temperature (melter and guns).
If there is no change, consult the
adhesive vendor.
Melter temperature too high Adjust. Refer to the melter
manual.
Incorrect nozzle size Replace the nozzle with a nozzle
that has a smaller orifice.
4. Erratic
temperature
readings
Incorrect system voltage Ensure that system voltages
match.
Incorrect component wiring Check all wires and wire
terminations in the hose heater,
output connector, and RTD
circuit and repair as needed.
Refer to the wiring diagram.
Defective RTD Unplug the gun cordset and
verify that the RTD connections
are secure. If the connections
are secure, check the continuity
of the RTD across the RTD pins
on the cordset. If there is no
continuity, replace the RTD.
Refer to the wiring diagram.
Continued...