Table of Contents
Advertisement
Troubleshooting
Some solutions require disassembling gun. Always
relieve system pressure and disconnect electrical cable
before performing these procedures.
Problem
Material leaks from front of gun body Seat or packing is worn
Material leaks from back of gun body Needle seal or packing is worn
Gun does not shut off
Gun does not heat material
10
.
Cause(s)
Obstruction inside gun
Worn needle
Needle or seat is worn
Spring is broken or not installed cor-
rectly
Obstruction inside gun
Loose heater wires
Loose sensor wires
Heater cartridge failed
Sensor failed
Temperature controller failed
No power to heating circuitry
Troubleshooting
Solution(s)
Replace seat (6) or packing (47).
Remove seat (6). Check and replace
if necessary.
Check and replace needle (4a) if nec-
essary.
Replace seals (4c) or packing (4d).
Replace needle (4a) or seat (6).
Check and replace spring (14) if nec-
essary.
Remove seat (6). Check and replace
if necessary.
Check and reconnect wire connec-
tions.
Check and reconnect wire connec-
tions.
Replace failed heater.
Replace failed sensor.
®
Refer to Therm-O-Flow
311208 as appropriate.
200 manual
311209F
Advertisement
Table of Contents
