Sprayer - Graco 231–034 Instructions And Parts List

NOTE: Use this chart to determine the required order for flushing the sprayer.
*Use this category for flushing a brand new sprayer and flushing after storage.
System has Next fluid to be
this fluid in it: this fluid in it: sprayed sprayed.
*Oil-based Oil-based paint –
solvent or paint new color
Oil-based Water-based paint Use mineral
solvent or paint
Oil-based Prepare the
solvent or paint sprayer for
storage
Water or water- Water-based paint
based paint – new color
Water or water- Oil-based paint
based paint
Water or water- Prepare the
based paint sprayer for
storage
CAUTION
Never allow water to freeze in the pressure control.
If water freezes in the pressure control, it may be
seriously damaged and the sprayer may not start.
Always pump the water out with mineral spirits
before the water could freeze in the pressure con-
trol.
WARNING
To reduce the risk of static sparking and splashing
when flushing, always remove the spray tip from
the gun and hold a metal part of the gun firmly to
the side of a grounded metal pail.
WARNING
To reduce the risk of a serious injury, follow the
Pressure Relief Procedure on page 4 whenever
you are instructed to relieve the pressure.
1. Relieve the pressure.
2. Turn the pressure–adjusting knob (A) fully counter-
clockwise to the minimum pressure.
3. Remove the spray tip from the gun. Remove the
filter bowl (B) and the screen (C), but leave the
support (D) in place. Install the bowl without the
screen. See Fig. 7.
Flushing
Flushing order:
Flush 1 Flush 2
Use mineral none
spirits.
Use warm
spirits. soapy water.
Use mineral none
spirits.
Use warm Use clean
soapy water. water.
Use warm Use clean
soapy water. water.
Use warm Use clean
soapy water. water.
4. Put the suction tube into a grounded metal–pail
5. Start the sprayer. See page 12. To save the fluid
6. Do not run the pump dry for more than 30 seconds
7. Relieve the pressure. Lock the gun trigger safety.
8. Unscrew the filter bowl (B) and reinstall the clean
Fig. 7
Follow this step before
you use or store the you use or store the
Flush 3

sprayer.

none Prime the sprayer with oil-
based paint.
Use clean Prime the sprayer with
water. water-based paint.
none Relieve the pressure.
Leave drain valve open.
none Prime the sprayer with
water.
Use mineral Prime the sprayer with oil.
spirits.
Use mineral Relieve the pressure.
spirits. Leave drain valve open.
with 1/2 gallon (2 liters) of a compatible solvent.
still in the sprayer, trigger the gun into another
container until the next fluid appears, then trigger
the gun back into the fluid you are pumping. Circu-
late the flushing fluid for a few of minutes to thor-
oughly clean the system.
to avoid damaging the pump packings!
screen (C). Install the bowl and hand tighten it.
B
C
D
A
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