MVP ATG Series, Manual

Page: 21 / 73

ATG Gelcoat Gun Operations Manual
Page | 21
Air Assisted AT Gun Troubleshooting
Symptom Possible Cause Remedy
No catalyst is
coming from gun
Plugged catalyst passageway in head
of gun or catalyst tips Inspect, clean, and clear passageways
No catalyst flow to gun
See Slave Pump troubleshooting for your
system
Material is leaking
from front of gun
Loose diffuser seat
Tighten diffuser seat ¼ to ½ turn at a time until
snug, then one more ¼ turn.
Note Overtightening diffuser seat may
cause binding of material needle
Worn needle and/or seat Replace worn items
O-ring on diffuser nicked or cut Replace O-ring
Material leaking
from weep hole on
side of gun Loose diffuser seat
Tighten diffuser seat ¼ to ½ turn at a time until
snug, then one more ¼ turn.
Note Overtightening diffuser seat may
cause binding of material needle
Worn needle packing
Replace packing and adjust as indicated in
manual
Parts Drawings
The following illustrated parts breakdown drawings for the various gun options are included:
Applicable Parts
Part Number Description
ATG-3500 External Mix Gelcoat Gun
ATG-3500-A External Mix Gelcoat Gun – Automatic
ATG-3500-FIT External Mix Gelcoat Gun – FIT
ATG-3500-FIT-A Gelcoat Gun – FIT – Automatic
ATG-3500-FIT-A-INT Gelcoat Gun – FIT – AUTO – International
ATG-3500-FIT-INT Gelcoat Gun – FIT- International
ATG-3500-INT External Mix Gelcoat Gun – International
ATG-3500-W External Mix Gelcoat Gun – Wetout
ATG-6500 External Mix Gelcoat Gun – With Signal
ATG-6500-COOK Gelcoat Gun – with Signal
ATG-6500-FIT External Mix Gelcoat Gun – FIT
ATG-6500-FIT-INT Gelcoat Gun – FIT – International
ATG-6500-FIT-W Gelcoat Gun – FIT – Wetout
ATG-6500-FIT-W-INT Gelcoat Gun – FIT – Wetout – International
ATG-6500-INT External Mix Gelcoat Gun – International
ATG-6500-W Gelcoat Gun – Wetout
ATG-6500-W-INT Gelcoat Gun – Wetout – International
ATG-35402-TT Test Catalyst Tip