Magnum Venus Plastech Pro Series Mini Pro Gel Coater - Manual (Page 26)

Mini Pro Gel Coater Operations Manual
Rev. 09/2012 Page | 26
Basic Troubleshooting for AT Guns:
Problem Possible Cause(s) Recommended Solution
Air leaking from exhaust
port on back handle while
trigger is OFF position.
O-ring material worn or cut.
Replace O-rings.
O-rings on catalyst piston worn or
cut.
O-rings on trigger valve worn or cut.
Air leaking from exhaust
port on back of handle
while trigger in OFF or ON
position. O-rings on trigger valve worn or cut.
Replace O-rings. O-rings on catalyst valve and/or
material piston worn or nicked.
Catalyst leaking from
catalyst tip while gun is
sitting, not being triggered. O-rings on catalyst valve worn or
cut. Replace O-rings.
Catalyst leaks from week
hole on catalyst side of gun. O-rings on catalyst valve worn or
cut. Replace O-rings.
Catalyst leaks from week
hole on catalyst side of gun. O-rings on catalyst valve worn or
cut. Replace O-rings.
No catalyst is coming from
gun.
Catalyst air piston is not actuating. Check for clogged catalyst
air passages (small holes
underneath back cylinder).
Note: There is more than
one passageway from
holes.
Plugged catalyst restrictor (allen
screw with orifice located in front of
catalyst valve). Clean and clear orifice in
front of catalyst valve.
Plugged catalyst passageway in
head of gun or catalyst tips. Inspect, clean and clear
passageways.
No catalyst flow to gun.
See “Slave Pump-Trouble
Shooting”
Material is leaking from tip
(front of gun).
Loose diffuser seat. Tighten diffuser seat 1/4 to
1/2 turn at a time until snug
and then one more 1/4
turn. Over tightening of
diffuser seat may cause
bindng of material needle.
Worn needle and/or seat. Replace worn items.
O-ring on diffuser nicked or cut. Replace O-rings.