Graco Optimiser 02017, Instructions Manual

Page: 18 / 32

18 308–293
Troubleshooting
WARNING
PRESSURIZED EQUIPMENT HAZARD
To reduce the risk of a serious injury, follow the
Pressure Relief Procedure on page 13 before
checking or repairing any part of the gun or sys-
tem.
PROBLEM CAUSE SOLUTION
Fluid flow is fluttering while spraying 1. Fluid nozzle not tight enough
2. Fluid filter clogged
3. Fluid adjustment knob not
properly set
4. Baffle (item 11) installed wrong
or damaged
1. Tighten fluid nozzle; Do not
exceed 35 in-lbs (4 N
m) torque.
2. Check fluid filter.
3. Turn the fluid adjustment knob
out for less feathering or use a
larger size nozzle.
4. Check if baffle protrusion is
properly inserted into gun insert
hole; see page 24. Replace
baffle if damaged.
Fluid flow fades while spraying high
viscosity fluids 1. Air hose size is too restricted for
higher air flows
2. Fluid pressure too low, causing
fluid flow to reduce when gun is
elevated
1. Use larger 3/8 in. (9.5 mm) ID
air hose, part no. 185–353. See
Accessories.
2. Raise fluid pressure at source or
use a smaller fluid nozzle.
No round pattern control Baffle (item 11) installed wrong or
damaged Check if baffle protrusion is properly
inserted into gun insert hole; see
page 24. Replace baffle if damaged.
Pattern becomes off-set or heavy
on ends 1. Fluid nozzle is over-tightened
2. Air cap too tight
3. Air cap horn holes plugged
1. Do not exceed 35 in-lbs (4 N m)
torque on nozzle. Replace
nozzle if damaged.
2. Loosen air cap retaining ring.
3. Clean air cap horn holes with
non-metallic item such as a
toothpick.
Fluid system will not operate at low
enough fluid pressure [below 10 psi
(70, kPa, 0.7 bar)] There’s no fluid regulator, or air reg-
ulator on pressure pot is not sensi-
tive enough at low pressures Add low pressure fluid regulator, or
add more sensitive air regulator on
pressure pot.