How To Flush - Graco LINE LAZER A Series Instructions And Parts List

WARNING
To reduce the risk of serious bodily injury , including
fluid injection, always follow the
Procedure Warning on page 4 before checking, ad-
justing, cleaning or shutting down the sprayer.
Be sure the sprayer is properly grounded.
CAUTION
NEVER leave water in the sprayer if there is the any
chance it could freeze. Push the water out with com-
patible solvent. Water frozen in the pressure control
tube prevents the sprayer from being started, and
causes serious damage to the pressure control.
When to Flush
1. Flush a new sprayer to remove the protective oil.
Before using water–base paint, use compatible sol-
vent, then soapy water, and then clean water.
Before using oil–base paint, use compatible solvent.
2. Changing colors. Use a compatible solvent.
3. Changing from water–base to oil–base paint.
warm, soapy water, and then a compatible solvent.
4. Changing from oil–base to water–base paint. Use a
compatible solvent, then warm, soapy water , and
then clean water.
5. Storage. After the compatible solvent flush, relieve
pressure, but do not drain the compatible solvent.
6. Startup after storage.
Before using water–base paint , flush out the compat-
ible solvent with soapy water , and then with clean
water.
When using oil–based paint, flush out the compatible
solvent with the paint to be sprayed.

How to Flush

1. Relieve pressure.
2. Remove the filter bowl (A) and screen (B); see manu-
al 307–273. Install the bowl and support (C), without
the screen, to flush it. Clean the screen separately .
See Fig. 6.
3. Close the pressure drain valve (13).
4. Put the suction tube in a grounded pail of water or
solvent.
5. Remove the gun(s) from the holder . Remove the
spray tip(s) to prevent splashing.
Flushing
Pressure Relief
6. Follow Startup on page 14. Keep the gun triggered
NOTE: If you have two guns, release the trigger safety
latch on the second gun and trigger that gun until clean
water or solvent comes from the nozzle. To ensure that
the hoses are well-flushed, flush the first gun and then the
second gun at least one more time.
7. Check all fluid connections for leaks. Relieve pres-
8. Remove the suction tube from the solvent pail. Dis-
Use
9. If you have been spraying paint, remove the strainer,
10. Install the clean filter screen. Install the filter bowl and
11. See Storage or Changing Colors, above. Relieve
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, and aimed into, a grounded metal pail.
until clean water or solvent comes from the nozzle.
See Fig. 7. Release the trigger and engage the gun
safety latch.
sure before tightening any connections. Start the
sprayer. Recheck the connections for leaks.
engage the gun safety latch. Trigger the gun to force
water or solvent from the hose. Do not let the pump
run dry for more than 30 seconds to avoid damaging
the pump packings! Relieve pressure.
B
C
Fig. 6
Maintain firm metal-
to-metal contact
when flushing to
reduce the chance
of static sparking
and splashing.
Fig. 7
suction tube and suction hose and clean them sepa-
rately to be sure all paint sediment is removed. Dried
paint in the suction tube assembly can build up and
cause performance problems later on.
hand tighten.
pressure.
A
13
0013
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