Pressure
Switch
Replacement
WARNING:
Before
proceeding,
follow
the
Pressure
'\
Relief
Procedure
outlined
on
page
5.
Additionally,
; ) follow
all
other
warnings
to
reduce
the
risk
of
an
·
~
injection
injury,
injury
from
moving
parts
or
electric
shock.
Always
unplug
the
sprayer
before
servicing!
1. Remove the three screws (#238).
2. Loosen the retaining nut on the Tube
(#300) from the
Connector (#310). (See page 24.)
3. Remove the Filter Block Assembly.
4. Remove the
Screw (#35) and remove the Knob (#68).
5. Remove the Cover
Plate and Insulator (#37 & 38).
6. Disconnect the red wires connecting to the Clutch Starter
(#42).
7. Remove the screw (#35) located in
the
back of the
Electrical Box.
Insert a 1/8" allen wrench
in
the hole and
back-off the
set
screw (#44) until the Pressure Switch (#243)
is able to slide down through. Feed
the
electrical wires down
at
the same time.
8. Insert a new Switch Assembly (#48) into the housing (#65)
while carefully guiding the wire into
the
Switch Box. Using a
needle nose pliers reconnect the wire
to
the Clutch Starter.
9. Making sure that the Switch Assembly
is
fully inserted,
tighten the Set Screw (#44) with a 1/8" allen wrench until the
Switch Assembly is secure. Reattach the Knob (#68).
10. Make sure that the Gasket (#50) is in place. Then install
the
filter Block (#207). Secure with three screws (#238) and
reattach the Retaining Nut on the Tube (#300) to the
.
"--)Connector
(#310).
'...___,'
11. Install the Cover Plate and Insulator (#37 & 38).
12.
The
Pressure Switch
is
Factory Calibrated so no
adjustment is required.
Service/Replacement
of
the
Pressure
Relief
Prime
Valve
WARNING:
Before
proceeding,
follow
the
Pressure
Relief
Procedure
outlined
on
page
5.
Additionally,
follow
all
other
warnings
to
reduce
the
risk
of
an
injection
injury,
injury
from
moving
parts
or
electric
shock.
Always
unplug
the
sprayer
before
servicing!
1. Remove
the
Groove
Pin (#226)
from
Bypass Valve
Handle
(#227).
2. Remove Handle (#227) and
Bypass
Cam (#225).
3. Using a wrench, loosen Bypass Housing (#218) and
unscrew.
4. Unscrew
Bypass
Retainer (#224)
and
remove
Bypass
Valve Stem (#220).
5. Inspect ball on
end
of
Stem (#220) and
0-Ring
(#219).
Clean
or
replace if worn.
6.
When
reassembling make sure
Washers
(#221 & 223)
are
in place.
Screw
completed assembly into Filter Block
except
for items #225,
226
and 227. Tighten securely with
\wrench
.
. _ _)7. Install Bypass
Cam
(#225) over Bypass Retainer
··
(#224), lubricate with
greas~.
Line up Groove Pin (#226)
on
Cam
(#225) with hole
on;
Filter
Block
(#207).
23
8. Using Groove
Pin (#226) line up Stem (#220)
with
hole on
Handle (#227). Secure Handle with Groove
Pin
(#226).
9. IMPORTANT: If Handle (#227) rotates
360°
check
Pin on
Cam (#225).
Service
I
Replacement
of
Filter
WARNING:
Before
proceeding,
follow
the Pressure
Relief
Procedure
outlined
on
page
5.
Additionally,
follow
all
other
warnings
to
reduce
the
risk of an
injection
injury,
injury
from
moving
parts
or
electric
shock.
Always
unplug
the
sprayer
before servicing!
PUMP FILTER
1. Unscrew Filter Housing (#202).
2.
Remove
Filter Cartridge (#204). Clean
or
replace.
3. Inspect Seal (#206). Clean
or
replace.
4. Reattach Filter Housing (#202).
Gun
Filter
WARNING:
Follow
all
safety
precautions
as
described
in
high
pressure
warning
section
before
proceeding. If
your
spray
gun
leaks
or
spits
at
the
tip
when you
release
the
trigger,
the
needle
or
seat
is
dirty, worn or
damaged
and
must
be
cleaned
or
replaced.
Replacement
or
Removal
of
Filter:
1 . First pull down on trigger safety guard
and
swing
away
from handle.
2. Unscrew handle from spray head.
3. Unscrew left hand threaded* filter from spray head.
(*NOTE: Left handed thread requires turning the filter
clockwise to remove.)
4. Screw new
or
cleaned (t) filter into the head.
(To
reinstall
left hand thread
tum
counterclockwise.)
5.
Reattach handle to head and secure safety trigger guard.
(NOTE:
If
filter breaks off in the head use a small wood
screw
to
remove.)
Figure 12 -
(t)For
more
detail, part
number
information
and
assembly
drawings
at larger scale, please
see
the
LX-80 Professional Airless Gun
Owner's
Manual (#313-
012).
