Graco EM 390 Instructions-Parts List

FLUSHING GUIDELINES
When to Flush
1. New Sprayer. The Sprayer was factory tested
with motor oil which was
left in to protect pump
parts.
Before
using water - base paint, flush with mineral
soirits. followed bv
SoaDv water, and then with
..
dean hater.
Before using oil - base mint. flush with mineral
-
spirits only.
2. Changing Colors. Flush with a compatible solvent
such
as mineral spirits or water.
3. Changing from water - base to oil - base paint.
Flush with soapy water, then with mineral spirits.
4. Changing from oil
- base to water - base paint.
Flush with mineral spirits, followed by soapy water,
then with clean water.
5. Storage.
Water
- base pelnt: flush with watar, then mineral
spirits and leave the pump, hose and gun
filled with
mineral spirits. Shut off and unplug the sprayer,
ooen the drain valva/orassure relief valve to relieve
pressure and leave open.
Oll-base Dalnf flush with mineral soirits. Shut off
valdpressura relief valva to relieve pressure and
and unplug
the sprayer, open the drain
leave open.
Before
uslng weter - base palnt, flush out mineral
spirits with soapy water and then with clean water.
spirits with
the fluid to be sprayed.
When uslng oll-base palnt, flush out the mineral
6. Startup after storage.
How to Flush
1. Follow the Pressure Relief Procedure Warning
on page
10.
2. Remove the filter bowl and screen; see manual
307-273 supplied. Clean the screen separately and
install
the bowl without the screen.
-.
Fig
3. Close the filter drain valve/pressure relief valva.
4. Pour one - half gallon (2 liters) of compatible solvent
into
a bare metal pail. Put the suction tube in the
pail.
5. Remove the spray tip from the gun.
6. Disengage the gun safety latch.
To reduce the risk of static sparking and
WARNING
splashing, always remove the spray tip from the
side of
a grounded metal pail when flushing. See
gun, and hold a metal part of the gun firmly to the
7. Point the spray gun into a grounded metal waste
container and with
a metal part of the gun firmly
touching the metal container,
squeeze the gun trig-
and reduces
splashlng. With the gun triggered,
ger.
Thle procedure helps evold static sparklng
turn the ON/OFF switch to ON and slowly turn the
12 307 - 724
MAINTAIN FIRM
METAL - TO - METAL
CONTACT BETWEEN
GUNANDGROUNDED
METAL CONTAINER
Fig 10
pressure adjusting knob clockwise just untll the
solvent comes from the nozzle. Release the trigger
sprayer starts.
Keep the gun triggered until clean
and
engage the gun safety latch. See Fig 10.
8. Check all fluid connections for leaks. If any leak,
first follow the Pressure Relief Procedure Warn-
ing on page
10. Then tighten the connections, start
the sprayer, and recheck the connections for leaks.
9. Remove the suction tube from the pail. Disengage
from
the hose. Do not let the pump run dry for
the gun safety and trigger the gun to force solvent
more
then 30 seconds to avold damaging the
pump packlngsl Then turn the ON/OFF switch to
OFF and engage the gun safety latch.
10. Unplug the power supply cord. Open the drain
valve/pressure relief valve and leave open until you
filter bowl and reinstall the clean screen. Be sura
are ready to
usa the sprayer again. Unscrew the
the screen and support are installed as shown in Fig
9.
11. If you have flushed with mineral spirits and are go-
watar and then with clean water. Then repeat
ing to
usa a water - base paint, flush with soapy
Step 1.

Graco EM 390 Specifications

General

Brand	Graco
Model	EM 390
Category	Paint Sprayer
Language	English