1.
2.
3.
4.
New Sprayer.
Your new UltraTM 333 Sprayer was
factory tested in No. 10 motor oil which was left in
to protect pump parts.
Before using water-base paint,
flush with mineral
spirits, followed by soapy water, and then a clean
water flush.
Before using oil-base paint,
flush with mineral
spirits only.
Changing Colors.
Flush with a compatible solvent
such as mineral spirits or water.
Changing from water-base to oil-base paint.
Flush with soapy water, then mineral spirits.
Changlng from oil-base to water-base paint.
Flush with mineral spirits, followed by soapy water,
then a clean water flush.
Water~base paint:
flush with water, then mineral
spirits and leave the pump, hose and gun filled with
mineral spirits. Shutoff and unplug the sprayer,
open the drain valve to relieve pressure and leave
open.
Oil-base paint:
flush with mineral spirits. Shutoff
and unplug the sprayer, open the drain valve to
relieve pressure and leave open.
6. Startup after storage.
Before using water-base paint,
flush out mineral
spirits with soapy water and then a clean water
flush.
When using oil-base paint,
flush out the mineral
spirits with the material to be sprayed and the
sprayer is ready to use.
How to Flush
1.
2.
3.
4.
5.
Follow the
Pressure Relief Procedure Warning
on page 2 or 10.
Remove the filter bowl and screen; see manual
307-273 supplied. Clean the screen separately and
install the bowl without the screen.
Close the filter drain valve.
FILTER
BOWL
SCREEN
FILTER
SUPPORT
4
DRAIN VALVE
SHOWN OPEN
Pour one-half gallon (2 liters) of compatible solvent
into a bare metal pail. Put the suction tube in the
pail.
Remove the spray tip from the gun.
To reduce the risk of static sparking and
IWARIIINOl
splashing always remove the spray trp from the
gun, and hold a metal part of the gun firmly to the
side of a grounded metal pail when flushing.
6. Disengage the gun safety latch. Point the spray gun
into a metal waste container and with a metal part
of the gun firmly touching the metal container,
squeeze the gun trigger.
This procedure helps
avoid stat/c sparking and splashing.
With the gun
triggered, turn the ON/OFF switch to ON and slow-
ly turn the pressure adjusting knob clockwise /usl
until
the sprayer starts. Keep the gun triggered until
clean solvent comes from the nozzle. Release the
trigger and engage the gun safety latch.
7.
8.
9.
10.
Check all fluid connections for leaks. If any leak,
first follow the Pressure Relief Procedure Warning
on page 2 or 10. Now tighten the connections, start
the sprayer, and recheck the connections for leaks.
Remove the suction tube from the pail. Disengage
the gun safety and trigger the gun to force solvent
from the hose. Do
not let the pump run dry for
more than 30 seconds to avoid damaging the
pump packings!
Then turn ON/OFF switch to OFF
and engage the gun saftey.
Unplug the power supply cord. Open the drain
valve and leave open until you are ready to use the
sprayer again. Unscrew the filter bowl and reinstall
the clean screen. Reinstall the bowl, hand tight
only.
If you have flushed with mineral spirits and are go-
ing to use a water-base paint, flush with soapy
water followed by a clean water flush. Then repeat
Step 1.
12 307643
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