When To Flush; How To Flush - Graco ULTRA PLUS+ 1500 Instruction Manual

Flushing
When
to
Flush
5. Storage. Flush as indicated below, shut
off the
1. New Sprayer, The sprayer was factory tested in
sprayer, open the pressure drain valve to relieve
lightweight oil which was left in to protect pump
pressure and leave it open.
parts. Water-base paint: flush with water, then mineral
Before using water-base paint,
flush
with mineral
spirits, then warm, soapy water, and then clean Oil-base paint: flush with mineral spirits.
water.
spirits. Leave the system filled with mineral spirits.
Before using oi/-base paint, flush with mineral
spirits.
2 . Changing Colors. Flush with a compatible
sol-
vent.
A
CAUTION
Never allow water to freeze in the pressure control.
Doing
so
prevents the sprayer from being started
trol. Push the viater out with mineral spirits.
and causes serious damage to the pressure con-
3 . Changing water-base to oil-base paint. Flush
with warm, soapy water, then mineral spirits.
6.
Startup after storage. Before using water-base
4.
Changing from oil-base to water-base paint.
water and then clean water. When using oil-base
Flush with mineral spirits, then warm, soapy
paint, flush out the mineral spirits with the paint to
water, and then clean water.
be sprayed.
paint, flush out the mineral spirits with soapy
How
to Flush
A
' B
- C
"
Flg.
7
1. Relieve pressure.
2. Remove the filter bowl (A), support (C) and
3 U
and support. Clean the screen separately and
screen (e); see manual 307-273. Install the bowl
install after flushing.. See Fig 7 .
3 .
Close the pressure drain valve.
4.
Pour one-half gallon of compatible solvent into a
grounded metal pail. Put the suction tube in the
pail.
5.
Remove the spray tip from the gun, if
it is
in-
stalled.
6.
Turn the pressure adjusting knob all the way
counterclockwise to lower the pressure setting.
7 . Open the drain valve. Turn on the sprayer and
When fluid comes from the valve, close
it.
Hold a
increase the pressure until until the sprayer starts.
container. Trigger the gun until all air is forced out
metal part of the gun firmly against a metal waste
of the system and the solvent flows freely from the
gun. Release the trigger and engage the gun
safety latch.
FIRE AND EXPLOSION
HAZARD
T o reduce static sparking and splash-
the gun, and hold a metal part of the
ing,
always remove the spray tip from
when flushing.
gun firmly to the side of a grounded metal pail
8. Remove the.suction tube from the pail. Disengage
the gun safety latch and trigger the gun to force
solvent from the hose. Do not run the pump dry
for more than 30 seconds to avoid damaging the
pump packingsl Relieve pressure.
9. Leave the pressure drain valve open until you are
ready to use the sprayer again. If the screen was
removed, unscrew the filter bowl and reinstall the
clean screen. Reinstall the bowl, hand tight only.
I O .
If you flushed with mineral spirits and are going to
use a water-base paint, flush with soapy water
and then clean water. Relieve pressure.
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