Graco B Series Instructions-Parts List Manual page 10

NOTE: Several flushes are often required to thoroughly clean the system and prepare it for the next fluid to be
sprayed, or to store the sprayer. Use this chart to determine the required flushes for the fluids you are using, and
then follow the procedure below for flushing.
*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-base fluid Oil-base fluid –
new color
Oil-base Water-base fluid
Oil-base Prepare for
solvent or fluid storage
Water or water- Water-base fluid –
base fluid new color
Water or water- Oil-base fluid
base fluid
Water or water- Prepare for
base fluid storage
*We recommend using Graco Gold Soap, 162805.
NOTE: Refer to Fig. 8 and 9.
1. Setup – prepare a pail of warm, soapy water or
solvent. Turn the gun's Air Control Valve (G) all the
way in. Start the sprayer in the OFF mode.
2. Set the Easy Spray control to SPRAY.
3. Trigger the gun. Direct the spray material into a
waste container until the flushing fluid appears.
Now direct the flushing fluid into the flushing pail,
secure the trigger bail to keep the gun triggered
and circulate the fluid until the gun and hose are
thoroughly flushed.
4. Release the trigger – pressure will be relieved
automatically.
5. Set the Easy Spray control to PRIME.
6. Circulate the flushing fluid through the pump,
siphon hose and drain hose until well flushed.
7. If you are are going to prime the system to spray,
see page 8.
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Flushing
Flushing order:
Flush 1 Flush 2
Mineral spirits none
Mineral spirits Warm soapy
water
Mineral spirits none
Warm soapy Clean water
water*
Warm soapy Clean water
water*
Warm soapy Clean water
water*
SPRAY / FILL HOSE
OFF / RELIEVE PRESSURE
PRIME PUMP
Fig. 9
Before you spray or store
sprayer: sprayer:
Flush 3
none Prime with oil-base fluid
Clean water Prime with water-base
fluid
none Relieve pressure,
Leave drain valve open
none Prime with water
Mineral spirits Prime with oil
Mineral spirits Relieve pressure,
Leave drain valve open
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