Flushing Guidelines - Graco 235-699 Instructions Manual

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FLUSHING GUIDELINES
When
to
flush
1.
2.
3.
4.
5.
Before using a new sprayer: flush out the oil
which was left in to protect pump parts.
Before using water-base paint: flush with min-
clean water flush.
era1 spirits followed by soapy water, and then a
spirits only.
Before using oil-base paint: flush with mineral
such
as
mineral spirits or water.
Changing colors: flush with a compatible solvent
flush with warm, soapy water, and then mineral
Changing from water-base
to
oil-base paint:
spirits.
Changing from oil-base to water-base paint:
flush with mineral spirits, then warm, soapy water,
and then a clean water flush.
water and then mineral spirits. Leave the system
Storage after using water-base paint: flush with
the drain valve open.
filled with mineral spirits. Relieve pressure. Leave
Storage after using oil-base paint: flush with
mineral spirits. Relieve pressure. Leave the drain
valve open.
NEVER leave water or water-based fluids in the
the water out with mineral spirits. Frozen fluid in
sprayer If there is a chance
it
could freeze. Push
the sprayer prevents it from being started and
may cause serious damage.
6. Startup after storage. Before using water-base
paint, flush out the mineral spirits with soapy wa-
-
paint, flush out the mineral spirits with the paint.
ter and then clean water. When using oil-base
How to flush
1.
Follow Pressure Relief Procedure. See page
2.
2. Remove the.spray tip and clean It separately.
bowl, hand tight, without the screen. Clean the
Remove the filter screen and then reinstall the
screen separately. See Fig 12.
r
.,
, /
Fig 12
3. Pour one-half gallon (2 liters) of compatible sol-
vent into a grounded metal flushing pail. Put the
suction hose in the pail.
4.'
Open the pressure drain valve. See Fig
IO.
5.
To
save the paint still In the pump and hose,
follow Step 6, except put the drain hose in the
valve. Put the drain hose in the flushing pail. Trig-
paint pail. When solvent appears, close the drain
ger the gun into the paint pall. When solvent ap-
pears, release the trigger. Continue with Step
6.
WARNING
To reduce static sparking and splashing, always
remove the spray tip from the gun, and hold a
metal part of the gun firmly to the side of a
METALTO METAL
MAINTAIN FIRM
CONTACT BETWEEN THE
GUNANOAGROUNDEO
METAL CONTAINER
Flg
13
Me3
6. Lower the pressure setting. Turn on the sprayer.
Maintaining metal-to-metal contact, trigger the
gun Into the flushing pail. Slowly increase the
the gun triggered until the solvent flows freely
sprayer pressure just until the pump starts. Keep
from the gun. Circulate the solvent to thoroughly
clean the sprayer. Release the gun trigger. En-
gage the gun safety latch.
7. Open the drain valve and circulate the solvent
through the drain hose to thoroughly clean
it.
Close the drain valve.
8. Remcive the suction hose from the pail. Disen-
gage the gun safety latch. Trigger the gun and
run the pump afew seconds to push air Into the
seconds to avoid damaging the pump packingsl
hose. Do not run the pump dry for more than
30
Relieve pressure.
9. Reinstall the clean filter screen.
I O . Remove and clean the inlet strainer. Wipe paint
off
11. Refer to When To Flush, Step 1 again. Relieve
the suction hose and drain hose.
pressure.
12. Leave the drain valve open until you use the
sprayer again.
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