Product manual

Series B900-N and B900SW-N Manifold Mounted Electric Guns
21
E 2006 Nordson Corporation
Part 1041221B
Problem Possible Cause Corrective Action
1. No
adhesive
output
Melter pump off Start the melter pump.
Melter flow control valve set too
low
Increase the system hydraulic
pressure (without stalling the
motor) by adjusting the flow
control valve. If there is no
change, inspect the flow control
valve for proper operation.
Replace the valve as necessary.
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 and resistance
data.
Defective coil Unplug the gun cord set and
check the coil resistance across
the coil pins on the cordset. Refer
to the wiring diagram and
resistance data.
Module stroke not properly
adjusted
Adjust the module stroke. Refer
to Adjust the Module Stroke under
Installation.
Blockage in module Disassemble and reassemble the
module, removing blockages and
cleaning parts as needed. Refer
to Replace a Module Component
under Repair.
Clogged nozzle Clean the nozzle. Refer to
Cleaning Nozzles under
Maintenance.
Clogged melter filter (where used) Clean or replace. Refer to the
melter manual.
Continued...