BorMann 034926, Manual, Page: 3 / 10

EN
WWW.BORMANNTOOLS.COM
3
Common troubles and troubleshooting of spray gun
Trouble Possible cause Remedy
Excessive paint at airflow nozzle Damage of airflow nozzle
Blockage of airflow nozzle caused by piling up of
paint rebounded at the muzzle
Replace airflow nozzle
Clean the airflow nozzle thoroughly
Paint leakage out of needle valve seal cartridge Abrasion or looseness of needle valve seal
cartridge
Abrasion of needle valve
Tighten or replace sealing plug as required
Replace needle valve
Air valve is dull when controlling the trigger Bend of air valve root
Unclean air valve root
Replace broken parts
Take it down and wash it
Leakage at air valve root Abrasion or loss of seal ring inside air valve Replace seal ring
When the trigger is pulled, air valve does not
work (its root can not plugged into the valve)
Bend of air valve root
Unclean air valve root
Replace broken air valve root
Take the air valve down and clean it
Bluntness of the trigger Unclean spindle screws of fixed trigger
Unclean needle valve
Needle valve seal cartridge is too tight
Damage of needle valve spring or air valve spring
Clean spindle screws
Clean needle valve
Regulate and lubricate sealing plug
Replace spring
Paint leakage out of needle valve at the top of
handle
Abrasion or loss of seal ring Replace seal ring
Airflow nozzle locating ring can not work Unclean thread of locating ring
Distortion or crack of locating ring
Wash the front end of the gun in solvent
Replace the locating ring
Sector valve can not be regulated Damage or crack of inner seal ring
Paint stained regulating screw
Replace seal ring
Take it down and wash it thoroughly
No dot spraying Incorrect installation of nozzle or spacer
Damage of spacer
Re-installation
Replace the spacer
Sector control valve or inlet valve is loose Abrasion of inner seal ring Replace seal ring
Air leakage of spacer and seal ring Damage of spacer and seal ring
Paint stained spacer and seal ring
Replace the spacer
Take it down and wash it
Air control valve on the handle of spray gun can
not work
Damage or crack of inner seal ring
Paint stained regulating screw
Replace seal ring
Take it down and wash it
Trembling spraying or stoppage of the gun Insufficient paint in the bucket
Unscrewed nozzle
Abrasion of needle valve or seal ring
Loose needle sealing plug
Loose joint of paint tube
Add the paint
Screw the nozzle
Replace the gun or seal ring
Screw sealing plug
Screw joint of paint tube