Flushing Guidelines; When To Flush; How To Flush - Graco GM 5000 Instructions And Parts List

Flushing
-WARNING WARNING
To reduce the risk of serious bodily injury, including
fluid injection, always follow the Pressure Relief
T o reduce the risk of static sparking and splashing
when flushing, always remove the spray tip from the
Procedure Warning on page
4
before checking, ad- gun, and hold a metal part of the gun firmly to the
justing, cleaning or shutting down the sprayer. side of, and aimed into,
a
grounded metal pail.
Be sure the sprayer is properly grounded.
L
6.
Follow
Startup
on page 14. Keep the gun triggered
until clean water or solvent comes from the nozzle.
CAUTION
See Fig. 7 . Release the trigger and engage the gun
N N E R leave water in the sprayer if there is the any
safety latch.
chance it could freeze. Push the water out with com-
NOTE
If you have
two
guns, release the trigger safety
patible solvent. Water frozen in the pressure control
latch on the second gun and trigger that gun until clean
tube prevents the sprayer from being started, and
water or solvent comes from the nozzle. To ensure that
causes serious damage to the pressure control.
the hoses are well-flushed, flush the first gun and then
the second gun at least one more time.
When to Flush
1. Flush a new sprayer to remove the protective oil.
Before usina water-base Daint, use compatible
solvent, then soapy water, and then clean water.
vent.
Before usina oil-base Daint. use compatible sol-
2.
Changing colors. Use a compatible solvent.
3. Changing from water-base to oil-base paint. Use
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 usina water-base Daintflush out the com-
patible solvent with soapy water, and then with
clean water.
When usina oil-based Daint,flush out the compat-
ible solvent with the paint
to
be sprayed.
How
to Flush
1. Relieve pressure.
2. Remove the filter bowl (A) and screen (B); see man-
ual 307-273. Install the bowl and support (C), with-
out the screen, to flush
it.
Clean the screen sepa-
rately. See Fig.
6.
3. Close the pressure drain valve (13).
7. Check all fluid connections for leaks. Relieve pres-
sure before tightening any connections. Start the
sprayer. Recheck the connections for leaks.
8.
Remove the suction tube from the solvent pail. Dis-
'
water or solvent from the hose. Do not let the pump
engage the gun safety latch. Trigger the gun to force
ing the pump packings! Relieve pressure.
run dry for more than 30 seconds to avoid damag-
Fig.
6
l3
wt3
Maintain firm metal-
when flushin to
reduce the cilance
-
of static sparking
and splashing.
\
+A
Fig.
7
u
w14
9. If you have been spraying paint, remove the strain-
separately to be sure all paint sediment is removed.
er, suction tube and suction hose and clean them
up and cause performance problems later on.
Dried paint in the suction tube assembly can build
4. put the
suction tube in a grounded Pail of water O r 10. Install the clean filter screen. Install the filter bowl
solvent. and hand tighten.
spray tip(s) to prevent splashing. pressure.
5. Remove the gun@) from the holder. Remove the
11.
See Storage or Changing Colors, above. Relieve
308-105
13