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

Pro Rider 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 (Hex
head 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.