24
307–785
GENERAL REP
AIR INFORMA
TION
Pressure Relief Procedure
To
reduce the risk of serious bodily injury
, including
fluid injection, injury from splashing fluid or solvent
in the eyes or on the skin, moving parts or electric
shock, always follow this procedure whenever you
shut
of
f the sprayer
, when checking or servicing any
part of the spray system, when installing, cleaning
or changing spray tips, and whenever you stop
spraying.
1.
Engage the gun safety latch.
2.
T
urn the ON/OFF switch to OFF
.
3.
Unplug the power supply cord.
4. Disengage the gun safety latch. Hold a metal
part of the gun firmly to the side of a grounded
metal pail, and trigger the gun to relieve
pressure.
5.
Engage the gun safety latch.
6.
Open the pressure drain valve, having a con-
tainer ready to catch the drainage. Leave the
pressure
drain valve open until you are ready to
spray
again.
If you suspect that the spray tip or hose is com-
pletely
clogged, or that pressure has not been fully
relieved
after following the steps above,
wrap a rag
around
the tip guard retaining nut or
hose end cou
-
pling
and VER
Y SLOWL
Y loosen the part to relieve
pressure gradually, then loosen completely . Now
clear
the tip or hose obstruction.
WARNING
Phillips screwdriver
Small flat blade
screwdriver
Needle nose pliers
Plastic mallet
Adjustable wrench
Adjustable, open–end
wrench
T
orque wrench
1/4 in. hex key wrench
3/16 in. hex key wrench
5/8 in. socket wrench
3/8 in. open end wrench
1/2 in. open end wrench
3/4 in. open end wrench
7/8 in. open end wrench
High quality motor oil
Bearing grease
Tool List
1. When
disconnecting wires
in
the pressure control
assembly,
use needle nose pliers to separate mating
connectors.
2. When reconnecting the wires, be sure the flat
blade
of
the insulated male connector is centered in
the
wrap–around blade of the female connector
.
To
reduce the risk
of a pressure control malfunction,
be
sure to properly mate connectors, and never pull
on a wire to disconnect it. Pulling on a wire could
loosen
the connector from the wire.
CAUTION
3. Route wires carefully in the pressure control as-
sembly, guiding them through the legs of the U–
shaped
bourdon tube. This is to avoid interfering with
the
bourdon tube, which moves as
the pressure set
-
ting changes, and to avoid pinching the wires be-
tween
the pressure control and cover
.
CAUTION
Improper
wire routing can result in poor sprayer per
-
formance
or damage to the pressure control.
4. Keep all screws, nuts, washers, gaskets, and
electrical fittings removed during repair proce-
dures.
These parts are not normally provided with
re
-
placement
assemblies.
5.
Test your repair before regular operation of the
sprayer
to be sure the problem is corrected.
6. If the sprayer does not operate properly , review
the repair procedure again to verify that everything
was done correctly . If necessary , refer to the
Troubleshooting Guide, pages 16–21, to help iden-
tify
other possible problems and solutions.
T
o reduce the risk of serious bodily injury
, including
electric shock, DO NOT touch any moving parts or
electrical parts with your fingers or a tool while in-
specting
the repair
.
Shut off the sprayer and unplug it as soon as you
complete
the inspection.
Reinstall all covers, gaskets, screws and washers
before
operating the sprayer
.
WARNING
CAUTION
Do
not
run the sprayer dry for more than 30 seconds
to
avoid damaging the pump packings.
7. Reinstall the motor shield before regular opera-
tion
of the sprayer and replace it if it is damaged. The
cover
directs cooling air around the motor to help pre
-
vent overheating. It can also help reduce the risk of
burns,
fire or explosion; see the
WARNING,
below
.
During operation, the motor and drive housing be-
come very hot and could burn your skin if touched.
Flammable
materials spilled
on the hot, bare motor
could
cause a
fire or explosion. Always have the mo
-
tor
shield in place during regular operation to reduce
the
risk of burns, fire or explosion.
WARNING
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