Table of Contents
Advertisement
Service
instructions
are
given
in
the
following
paragraphs.
Check
everything
in the chart
before
dis-
assembling
any part of the unit.
WARNING
Pressure Relief Procedure
System
pressure
must
be relieved
whenever
you
are done
spraying
and
before
servicing,
cleaning
or removing
any
parts
to
avoid
possible
injury
from high pressure
fluid in the system.
Always
follow
this
procedure:
shut
off unit,
trig-
ger spray
gun,
engage
trigger
safety,
and slowly
open
drain valve.
Leave
drain
valve
open until you
are ready to use the unit again.
WHAT
TO DO
TROUBLESHOOTING
WHAT'S
WRONG
Electric motor won't
run
Electric motor
stops whil
Electric motor
runs but
Electric motor
runs, b
Paint leaks into wet-cup
Excessive surge at spray
Not enough
paint pressu
Tails or fingers
in spray
Paint runs or sags
Spitting
from spra
Static sparking
from spr
Unit unplugged,
or building
circuit fuse blown
(check, replace)
Electric motor burned out (replace)
Switch
defective
(replace yearly)
Overload
switch
has opened
(unplug
unit*,
decrease pressure)
Pressure control
plunger
sticking
(clean and lubricate,
see page 3)
Pressure setting
too low (increase)
Outlet filter dirty or plugged
(clean)
Tip or tip filter plugged
(remove
& clean)
Piston ball check not seating
(service,
see disp. pump service)
Piston packings
worn or damaged
(replace,
see disp. pump service)
Intake valve ball check not seating
(service,
see disp. pump service)
Displ. pump frozen or gear train damage
(thaw"",
replace)
Throat
packings
worn or damaged
(replace,
see disp. pump service)
Spray tip too big or worn (change
tip see manual 307-321)
Paint supply low or pail empty (fill)
Unit or work not grounded
(check,
ground)
Paint too viscous (thin)
Wrong
type hose (use minimum
50 ft (15 m) static free nylon hose
only-wire
braid hose unacceptable)
Unit sucking
air or gun needle not seating
(tighten
fittings,
service gun -
see manual 307-046)
*The
electric
motor
has an overheating
protector
switch
which
automatically
resets on cooling.
If it opens,
unplug
unit and let it cool for 2 to 20 minutes.
Also try to correct
the cause of overheating.
Always
use the lowest
pressure
setting
needed.
""Freezing
results from failure to replace flushing
water with
mineral spirits solvent.
Service Displacement
Pump
(Repair Kit 2084340 available)
Before Disassembling
Flush if possible.
Relieve pressure according
to Pressure
Relief Procedure
and unplug
unit. Remove the thumb-
nuts and raise the front hood of the shield.
Remove Pump
You must remove the pump for service. Disconnect
the
suction
and outlet
hoses.
Remove
the socket
head
screws,
lockwashers,
flat washers
and thrust
washers
from the pivot shaft and crank. Be very careful to hold
the pump
as you slide it off the shafts,
so you
don't
damage the needle bearings. See Fig 5.
Use repair kit no. 208-940 to repair the pump. Use all the
parts in the kit, even if the old ones look good.
OUTLET
.@
\ 7
Fig 5
307-075
5
Advertisement
Table of Contents
