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8 306926
Troubleshooting
NOTE: Refer to the separate instruction manuals
which are supplied with this sprayer, and the manuals
which are supplied with any accessories you added,
for complete operation, troubleshooting and repair
instructions.
NOTE: Check all possible problems and solutions
before disassembling the unit.
WARNING
To reduce the risk of serious injury whenever you
are instructed to relieve pressure, always follow the
Pressure Relief Procedure on page 6.
NOTE: Relieve the pressure before checking or
servicing the equipment.
Problem
Cause Solution
Will not spray
Insufficient air supply See performance chart on page 9.
y
Closed or clogged air regulator, valve,
supply line, etc.
Open, clear.
Obstructed spray tip, valve, or hose Clear, use larger tip.
Worn or damaged pump parts See manual 306818 or 306821.
Valve will not stop pump operation
Clogged fluid intake filter Clean.
Exhausted cleaning solution supply Refill.
Worn or damaged pump parts See manual 306818 or 306821.
Valve will not stop fluid spray
Incorrect valve adjustment Adjust; see manual 307010.
y
Obstructed or worn valve stem or
seat
Clear, replace; see manual 307010.
Fluid leaking from valve at needle
Closed or clogged air regulator, valve,
supply line, etc.
Open, clear.
Worn needle packings or loose pack-
ing nut
Tighten; see manual 307010
Fluid will not come from pump
Insufficient air supply See performance chart on page 9.
(hose removed)
Closed or clogged air regulator, valve,
supply line, etc.
Open, clear.
Obstructed spray tip, valve, or hose Clear, use larger tip.
Clogged fluid intake filter Clean.
Exhausted cleaning solution supply Refill.
Worn or damaged pump parts See manual 306818 or 306821
Pump operating, but output low
Obstructed spray tip, valve, or hose Clear, use larger tip.
g,
Exhausted cleaning solution supply Refill.
Worn or damaged pump parts See manual 306818 or 306821
Fluid leaking from valve handle Spray valve swivel packings worn Replace; see manual 307010