AIRLESSCO LP 400, Service & Operation Manual

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4
5
1. New Sprayer
Your sprayer was factory tested in an oil solution which
was left in the pump. Before using oil-base paint, fl ush
with mineral spirits only. Before using water-base paint
fl ush with mineral spirits, followed by soapy water, then a
clean water fl ush.
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 mineral spirits .
4. Changing from oil-base to
water-base paint.
Flush with mineral spirits, followed by soapy water, then a
clean water fl ush .
NEVER leave pump unattended
while under pressure!
FLUSHING
5. Storage
Always relieve pressure (See pressure relief
procedure on page 10) prior to storage or when
machine is unattended.
Oil-base Paint: Flush with mineral spirits. Ensure that
there is no pressure in the unit, then close the prime/
pressure relief valve.
Water-base Paint: Flush with water, then mineral spirits.
For longer term storage use a 50/50 mixture of mineral
spirits and motor oil. Always ensure that there is no pres-
sure in the unit, and close the prime/pressure relief valve
for storage.
6. Start-up after storage
Before using water-base paint, fl ush with soapy
water and then a clean water fl ush.
When using oil-base paint, fl ush out the mineral
spirits with the material to be sprayed.
FIGURE 1
Prime/Pressure Relief Valve (Prime/PR Valve)
Used to relieve pressure from gun, hose & tip and to prime
the unit when in OPEN position.
(It is in open po si tion
when there is a wider gap
between valve handle and
cam body).
When valve is in the CLOSED
position, there is only a very
slight gap between handle & body.
When closed the system is
pressurized .
Handle as a Loaded Firearm!
FIGURE 2
PRESSURE CONTROL KNOB. (FIG. 2)
Used to adjust pressure. Turn clockwise (CW) to increase
pressure and coun ter clock wise (CCW) to decrease pres-
sure.
TOGGLE
SWITCH
FIGURE 3
HOW TO FLUSH
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