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H.E.R.O. INDUSTRIES 1150GSD MANUAL - “B” VERSION
20
2. Paint hose incorrect type. (replace with genuine top quality H.E.R.O. airless spray hose. Steel braided
hose is not recommended ).
3. Too short a length of hose. (minimum 50' of airless spray hose is required. Replace or add hose until a
minimum of 50' is being used).
FLUID BEING SPRAYED OUT OF TIP PULSATES, SPRAY HOSE CONTINUES TO MOVE
VIGOROUSLY WHEN GUN TRIGGER CLOSED
1. Outgo valve (ref# 26) assembled incorrectly. (remove the outgo valve and reassemble closely following
the instructions on page 26).
2. Outgo valve ball (ref# 30) worn out or jammed. (inspect outgo ball to ensure that it is round and free of
nicks or cuts. Inspect for foreign material jamming ball. Inspect seat and cage for wear. Replace parts as
required).
PUMP SPRAYS WATER OR SOLVENT AT CORRECT PRESSURES, BUT WILL NOT SPRAY
PAINT (Check with pressure gauge, see page 16)
1. Air leak in paint intake siphon assembly. (check all fittings and hose clamps in intake assembly for
tightness).
2. Air leak in paint intake. (check for cracked or broken intake fittings. Swivel connector, (ref# 8), or hose
barb,(ref# 7), may be damaged due to over tightening. Look for small black hairline fractures. Replace
damaged parts).
3. Partial blockage in paint intake siphon hose, (ref# 5). (clean and remove any blockages from intake
siphon hose. Check to insure strainer bag is not clogging intake siphon hose).
SPRAYER DOES NOT PRIME WITH PAINT
1. Heavy bodied paint, pump dry. (refer to " Operating Instructions" and follow priming instructions
using the correct thinner for the paint you are to use).
SPRAYER DOES NOT PRIME WITH CORRECT THINNER
1. Pump completely dry.(pump may experience difficulty in priming when it is completely dry. First invert
siphon tube and pour thinner into siphon tube, to help prime dry pump).
2. Intake siphon assembly (ref# 1) has loose/damaged fittings, loose clamps, or damaged hose.(check all
fittings, hose clamps, for tightness, siphon hose for damage or holes. Replace or tighten as required).
3. Intake valve ball (ref# 14) stuck. (remove intake endcap,(ref# 11), and free ball and reassemble).
4. Outgo valve ball (ref# 30) stuck. (remove outgo valve,(ref# 26). Unthread outgo valve upper body,
(ref# 31), from outgo body lower,(ref# 27). Remove outgo seat,(ref# 29), from upper body. Free ball
and reassemble following detailed instructions on page 26).
TROUBLESHOOTING
SITUATION
POSSIBLE CAUSE (REMEDY)
SPRAY MATERIAL LEAKS AT PRIME VALVE STEM
1. Prime valve stem packings (ref# 44 or 45) defective. (replace damaged packings following detailed
instructions on page 27.
SPRAY MATERIAL LEAKS OUT PRIME VALVE HOSE WITH VALVE CLOSED