308-319
15
Flushing
When to flush
Determine the material you are going to pump from the
Column 1, then flush with the material indicated in the
Column 2, then, depending on what you plan to do
next, follow the recommendations in one of the next
three columns.
CAUTION
NEVER leave water or water-based fluids in the
sprayer if there is a chance it could freeze. Push
the water out with mineral spirits. Frozen fluid in
the sprayer prevents it from being started and may
cause serious damage.
Column 1
Column 2
Column 3
Column 4
Column 5
If you are going to:
Flush with:
Prime with:
Clean with:
Store unit with:
Spray latex paint
Warm, soapy water,
then clean water
Latex-base paint
Warm soapy water,
then clean water
Mineral spirits
Spray oil paint
Mineral spirits
Oil–base paint
Mineral spirits
Mineral spirits
Change latex to oil paint
Warm, soapy water,
then clean water
Mineral spirits
Mineral spirits
Mineral spirits
Change oil to latex paint
Mineral spirits,
soapy water, and
clean water.
Latex
Warm, soapy water,
then clean water
Mineral spirits
Change colors, same base Compatible solvent
such as water or
mineral spirits
How to flush
1. Follow
Pressure Relief Procedure
. See page 11.
2. Remove the spray tip and clean it separately. If
you are changing from water–based to oil–based
paints or solvents, be sure that the tip is cleaned
thoroughly.
3. Remove the filter screen and then reinstall the
bowl, hand tight, without the screen. Clean the
screen separately. See Fig. 10.
Fig. 10
SCREEN
BOWL
02990
4. Pour one-half gallon (2 liters) of compatible solvent
into a grounded metal flushing pail. Put the suction
hose in the pail.
5. Open the pressure drain valve. See Fig.11.
6.
To save the paint still in the pump and hose,
follow Step 7, except put the drain hose in the
paint pail. When solvent appears, close the drain
valve. Put the drain hose in the flushing pail. Trig-
ger the gun into the paint pail. When solvent ap-
pears, release the trigger. Continue with Step 7.
