Nordson FP-200 - Page 61

Troubleshooting
6-5
Part 237478_03
E 2012 Nordson Corporation
Problem Possible Cause Corrective Action
4. Gun fails to heat
or gun
temperature too
low
No power Make sure that input power connected
and all circuit breakers switched ON.
Temperature setting too low Adjust setting.
Controller not functioning Check controller settings (refer to
applicator product manual).
Failed heater cartridge (open or short) Test resistance (refer to Heater check in
this section.
Failed thermostat or RTD
NOTE: Gun will either have a
thermostat or RTD, not both.
Check thermostat or RTD (refer to
Thermostat or RTD check in this section.
Replace Thermostat or RTD if defective
(refer to Section7, Repair).
5. Gun overheats Applicator tank temperature setting
too low
Adjust setting (refer to applicator product
manual).
Hose or gun temperature controller
setting too high
Adjust setting (refer to applicator product
manual).
Controller not functioning Check controller settings (refer to
applicator product manual).
Shorted RTD (unit should shut down)
or defective thermostat
NOTE: Gun will either have a thermo
stat or RTDs, not both.
Test RTD using Nordson Hose/Gun
Diagnostic Device or ohmmeter. Check
thermostat (refer to Thermostat check in
this section. Replace Thermostat or
RTD if defective (refer to Section7,
Repair).