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Troubleshooting
18 310692D
Troubleshooting
WARNING
Follow Pressure Relief Procedure, page 13 when
you stop spraying and before cleaning, checking, ser-
vicing, or transporting equipment. Read warnings,
page 3.
Problem Cause Solution
Fluid flow is fluttering while spraying. 1. Fluid nozzle not tight enough.
2. Fluid filter clogged.
3. Fluid source empty.
1. Tighten fluid nozzle to 40 in-lb
(4.5 N•m).
2. Check fluid filter.
3. Refill
Fluid flow fades while spraying high
viscosity fluids.
1. Air hose size is too restricted for
higher air flow being used.
1. Use 5/16 in. (7.9 mm) I.D. air
hose if the hose is 25 ft. (7.6 m)
long. If longer hose is needed,
use a 3/8 in. (9.5 mm) I.D. hose.
Pattern becomes off-set or heavy on
ends.
1. Air cap horn holes plugged or
damaged.
2. Nozzle tip dirty or damaged.
1. Clean air cap horn holes with
non-metallic item such as a
toothpick, or replace air cap.
2. Clean or replace nozzle.
Gun fluid pressure is too high with
gun triggered (cannot achieve
desired flow rate).
Using needle/nozzle kit with too small
orifice.
Use needle/nozzle kit with larger ori-
fice.
Using a low fluid pressure setting, the
fluid flow is too high, making it neces-
sary to restrict needle travel to
reduce fluid flow.
Using needle/nozzle kit with too large
orifice.
Use needle/nozzle kit with smaller
orifice.
Fluid system will not operate at low
enough fluid pressure [below 10 psi
(70 kPa, 0.7 bar)].
There is no fluid regulator, or air reg-
ulator or pressure pot is not sensitive
enough at low pressures.
Add low pressure fluid regulator, or
add more sensitive low pressure air
regulator on pressure pot.