Trouble Shooting

sg82 amend p8.qxd 19/01/00 12:35 Page 12

PROBLEM	CAUSE	ACTION REQUIRED
Spray Gun HUMS	Piston Sticking.	Remove 4 screws adjacent to paint pick up pipe
but does not	Part no. SG12.	part no. SG14. Release container cover, cylinder
operate.		housing and piston assembly. Unscrew and remove
		nozzle. Remove atomiser valve. Use soft punch or
		shaft of 4.5mm MAXIMUM diameter inserted into the
		valve housing to eject the stuck piston. Clean and
		lubricate piston and cylinder. Re-assemble carefully
		in reverse order. Remember to replace the
		compression spring onto the piston before fitting the
		piston. Ensure you have not dropped any parts into
		the motor housing.
No suction Feed.	No Valve in pump.	Insert atomiser valve part no. SG03.
	Paint Pickup	Clean filter accordingly part no. SG16.
	filter blocked.
	Liquid too thick.	Thin liquid as recommended.
Spray Gun motor	Nozzle Blocked	Clean thoroughly with thinners.
operates but	part no. SG04 or
nothing coming	SG44.
out.	Atomiser valve	Clean thoroughly with thinners.
	blocked, part no.
	SG03.
Spray Gun motor	Worn valve.	Replace atomiser valve part no. SG03.
operates, but	Worn nozzle.	Replace nozzle part no. SG04 or SG44.
spluttering.	Container almost	Refill container.
	empty.
	Spray gun held	Hold at correct angle.
	at wrong angle.
	Liquid too thick.	Thin liquid as recommended.
	Incorrectly set	Adjust regulator at back of gun.
	regulation
	control.
Paint Dripping.	Nozzle loose.	Tighten nozzle.
	Operating at more	Keep sprayer upright.
	than 45o angle.
Excessive fogging.	Pressure too high.	Turn output knob clockwise to reduce pressure
	Holding sprayer	Hold sprayer about 30cm (12”) from work.
	too far from
	surface.
Runs and sags in	Arm movement	See section on spraying.
paint.	too slow.
	Spray gun too
	close to work
	surface.
	Applying too
	much paint in
	one go.

TROUBLE SHOOTING

PROBLEM

CAUSE

ACTION REQUIRED