Graco E Series, ULTRA 433, 226-998 Instructions-parts List Manual

INSTRUCTIONS-PART.S LIST
This
manual contains
WARNINGS
AND
IMPORTANT
INSTRUCTIONS
FOR
REFERENCE
ORACO
307-670
Rev
Supersedes
G
D
ELECTRIC,
ULTRA@
207
bar
Model.226-998, Series
Complete sprayer with hose, gun, RAC
DripLessTM Tip Guard and SwitchTipTM.
U.S.
PATENT NO. 4,323,741, 4,397,610 PATENTED 1983, CANADA AND OTHER PATENTS PENDING
NOTE: See Index on page
230
VAC
MAXIMUM
WORKING PRESSURE
433
E
2
AIRLESS PAINT SPRAYER
lV@,
n
.
Hazard
Never use 1 ,1, 1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluidscontaining such solvents in this equipment. Such sion, which could cause death, serious bodily injury and/or substantial property damage.
Consult your fluid suppliers to ensure that the fluids being used are compatible with aluminum and zinc parts.
Refer to the Technical Data on page 43 for more information.
of
Using
Fluids
GRACO INC. P.O.
Containing Halogenated Hydrocarbons
use
could result in a serious chemical reaction, with the possibility of explo-
BOX
COPYRIGHT 1983, GRACO INC.
WARNING
1:Ml
MINNEAPOLIS, MN
55440-1444
TABLE
OF
CONTENTS
Introduction 2 Warnings 4
Setup
Operation Shutdown Flushing Guidelines Troubleshooting Guide
Motor Won't Operate Low Output
No
Excessive Pressure Fluctuations Motor Electrical Short
SpinTest BridgeTest
Repair
List of Tools General Repair Notes Power Supply Cord Replacement Filter Replacement
ON/OFF Switch Replacement
Microswitch Replacement
...............................
.................................
....................................
.................................
&
Care
.........................
.......................
....................
............................
Output
.............................
...........
Is
Hot and Runs Intermittently
........
.........................
.............................
............................
...........................
...................
........
-
.
......................
.............
................
6
8
10
11
13
16
17 17
18
18 19
20
21 21 22 22
23
23
INTRODUCTION
ULTRA@
Your new Ultra@ 433 Sprayer functions and operates dif
ferently than other airless paint sprayers. This section will help you become familiar with the sprayer before operat ing it.
Pressure Control
The pressure control includes an sprayer, the pressure adjusting control knob and a pres sure sensing device. Its function is to control the motor speed sure at the pump outlet.
Motor
The DC motor has sealed bearings and replaceable tor brushes. Its function is to drive the displacement pump at the rate needed to supply sufficient paint volume at the selected pressure. Working together, the pressure control and motor cause the pump to cycle whenever there is fluid or pressure demand. When the pump is cy cling, the motor sounds like an automobile starter crank
ing. When the pump
intermittently until the fluid pressure stabilizes, then the
motor will shut itself to the sprayer and it will stay pressurized and ready to use
unless you manually shut it off and relieve pressure.
433
BASIC COMPONENTS
ONlOFF switch for the
so
that the sprayer maintains constant fluid pres
is
not cycling, the motor may hum
off.
However, there will stili be power
-
-
-
-
mo-
-
-
Bridge.Rectifier Replacement
Choke Replacement Varistor Replacement Circuit Board Replacement
Pressure Control Replacement Pressure Control Calibration Bearing Housing
Conn. Rod Drive Housing Motor Brush Replacement Capacitor Replacement Motor Replacement
Parts Lists and Drawings
Complete Sprayer Pressure Control Assembly
NOTE:
Accessories 42 Technical Data 43
Dimen.sions.. 43
Warranty Back Cover
Fluid Filter
The fluid filter strains the paint to help avoid clogs in the
hose and spray tip. The filter includes a reusable element
and a pressure drain valve for relieving fluid pressure.
Hoses
The grounded, nylon spray hoses have spring guards on both ends. 3/16 in. nylon hose material acts as a pulsation dampener to ab sorb pressure fluctuations.
Spray Gun
Graco high pressure spray guns have a trigger safety which prevents accidental triggering when it
See
a
SwitchTip uses high pressure fluid to remove clogs from
the spray tip without removing verse which helps reduce the risk of fluid injection injury.
See manual 307-793, supplied, for the displace
ment pump repair instructions and parts list.
.........................
The152 m hose has a 1/4 in.
ID
whip hose allows flexible gun movement. The
&
Fig Z-I.
filter for final paint straining. The ReverseA-Clean IV
-A-
Clean IV DripLess tip guard is a safety feature
Replacement 32
..............................
.............................
.............................
RAC
The gun provided with the sprayer also has
.....................
....................
&
Replacement, 30
...................... 35
.......................
IV
DripLess Tip Guard
..............
................
.............
...............
24 25 25 26 27 28
..............
...............
.................
...................
................
ID.
The
is
engaged.
it
from the gun. The Re
0.9
33 34
38 40
m,
-
-
-
Because the motor is DC, it age or voltage fluctuations than an AC motor, and an ex tension cord of up to 45 m can be used.
Drive Assembly The sealed drive assembly transfers power from the DC
motor to the displacement pump.
Displacement Pump
The positive displacement, volume vides equal fluid delivery on both the up and down pump strokes. The pump has a wet Graco Throat Seal Liquid, throat packings and piston rod.
2
307-670
is
less sensitive to low volt
-
balanced pump pro-
-
cup which, when filled with
helps prevent damage to the
-
-
Fig
3-1
\
CONTRACTOR GUN
WlTH
RAC
517 SIZE
'
IV
DRIPLESS
SWITCHTIP
WHIP
END HOSE
TIP
GUARD
AND
307470 3
HIGH
FOR
Read and understand
PRESSURE SPRAY CAN CAUSE SERIOUS INJURY.
PROFESSIONAL USE ONLY. OBSERVE ALL WARNINGS
all
instruction manuals before operating equipment.
FLUID INJECTION HAZARD
General
This equipment generates very high fluid pressure. Spray from the gun, leaks or ruptured components can inject fluid through gun safety latch in the closed or"safe"position, making the gun
yourskin and into your body and causeextremelyserious bodily inoperative. Failure
injury, including the need for amputation. Also, fluid injected or tal triggering of the gun. splashed into the eyes or on the skin can cause serious dam age.
NEVER pointthespray gunat anyoneorat any partofthe body,
NEVER put hand or fingers Over the spray tip. NEVER
"
blow back" paint; this is NOT an air spray system.
ALWAYS have the tip guard in place
spraying. the gun.
ALWAYSfollow the Pressure Relief Procedure,
cleaning or removing the spray tip or servicing any system
NEVER
Be sure equipment safety devices are operating properly before each use.
Medical
. . . - -. - -.
If
any fluid appears
MEDICAL CUT.
Note to Physician: Injection in the skin is a traumatic inju
important to treat the injury surgically as
not
with some exotic coatinos iniected directlv into the blood stream. Consultation with hand surgeon may be advisable.
Spray
Be sure all gun safety devices are operating properly before each use. Do cause a malfunction and result in serious bodily injury.
Safety
on
the spray gun when gunfirmlytothepail.
below;
try
to'stop or deflect leaks with your hand or body.
Alert-Airless Sarav Wounds
. .
.
-. . . . . . .
CARE
Tell the doctor exactly what fluid was injected.
delay treatment to research toxicity. Toxicity
Gun
Safety Devices
not
.
- -
to
AT ONCE.
remove or modify any part of the gun; this can
-,-~-,
penetrate your skin. get
DO
-
a plistic surgeon br reconstructive
NOT
~ ~~~~~~
TREAT
soon
EMERGENCY AS
as possibr. Do
is
try
before
A
SIMPLE
It is
a concern
to
Safety
Wheneveryoustopspraying,evenforamoment,
-
Latch
to
set the safety latch can result in acciden
Diffuser
The gun diffuser breaks up spray and reduces the risk of fluid injection when the tip is not installed. Check diffuser operation
regularly. Follow the Pressure Relief Procedure, below, then remove the spray tip. Aim the gun into a metal pail, holding the
If
the fluid emitted is not diffused into an irregular
stream*
Tio
ALWAYS have the tip guard in place
spraying. The tip guard alerts you and helps reduce, but does not prevent, the risk of accidentally placing your fingers or any part of your body close
tip.
Trigger
Always have the trigger guard in place
ing
dropped or bumped.
Spray
Use extreme caution when cleaning or changing spray tips. the spray tip clogs while spraying. engage the gun safety latch immediately. ALWAYS foilow the Pressure Relief Procedure and then remove the spray tip to clean
NEVER wipe fully relieved and the gun safety latch is engaged.
replace
Guard
.~
~ ~
Guard
to
reduce the risk of accidentally triggering the gun
Tip Safety
Usingthelowestpossiblepressure,trigger
the
diffuser
off
buiid-up around the spray tip until pressure is
immediately'
to
the fluid injection hazard
on
the spray gun while
on
the gun when spray
it.
alwayssetthe
to
the spray
if
it
is
-
-
If
i
,
Pressure Relief To reduce the risk of serious bodily injury, including fluid in
jection,splashingfluidorsolventintheeyesorontheskin,or
injury from moving Darts or electric shock, always follow this
procedure whenever
ingorservicinganypartofthespraysystem,wheninstalling,
cleaning
I
spraying.
1.
2.
4
307-670
or
Engage the gun safety latch.
Turn the ON/OFF switch
I
Procedure
YOU
shut
Off
the sprayer, when check-
changing spray tips, and whenever you stop
to
OFF,
9
3.
-
~
Disengage the gun safety latch. Hold a metal art of the
'
. gun firmly to the side of a grounded metal pair and trig-
ger the gun
4.
Enoage the aun safetv latch.
5.
OGnihepre&uredra-invalve,
to catch the drainage. Leave the valve
ready
If
you
suspect that the spray tip or hose
clogged,orthatpressurehasnotbeenful~relievedafterfol-
lowinqthestepsabove,VERYSLOWLYloosenthetiDauard
retai6n nut'or hose end coupling and relieve pi&sure
gradual
9
y,
to
relieve pressure.
having acontainerready
open
to
spray again.
then loosen completely. Now clear the tip or hose.
until you are
is
completely
I
I
I
MOVING PARTS HAZARD
Moving parts can pinch or amputate your fingers or other body
pans. KEEP CLEAR of moving parts when starting or operating
the sprayer. Follow the Pressure Relief Procedure on page beforechecking or servicing any part ofthe sprayer, from starting accidentally.
to
prevent it
4
EQUIPMENT MISUSE HAZARD
General
Anv misuse of
ovirpressurizing, modi$ing'parts. using incompatible chemi
cals and fluids, or using worn or damaged parts, can cause them
oron the skin, or other serious bodily injury, or fire, explosion or
property damage.
NEVER alter or modify any part of this equipment; doing could cause it
CHECK all spray equipment regularly and repair or replace worn or damaged parts immediately.
Always wear protective tor as recommended by the fluid and solvent manufacturer.
S
Tlis sDraver can develoo
PRESSURE. Be sure that used are rated
maximum working pressure of anv component or accessory used in the system.
Fluid
BE
patible with the wetted parts shown in on page
literature before using them in this sprayer.
Safet
t
1
e spray eauipment or accessories, such as
to
rupture and result in fluid injection, splashing in the eyes
to
malfunction.
-.
eyewear, gloves, clothing and respira
stem
Pressure
to
withstand this pressure.
and
SURE
Solvent Compatibility
that all fluids and solvents used are chemically com-
43.
Always read the fluid and solvent manufacturer's
207
all
bar MAXIMUM WORKING
spray equipment and accessories
DO
NOT exceed the
theTECHNlCAL DATA
so
HOSE SAFETY
High pressure fluid hose develops a leak, split or rupture due damage or misuse, the high pressure spray emitted from it can cause a fluid injection injury or other serious bodily injury or property damage.
ALL FLUID HOSES MUST HAVE SPRING GUARDS ON
BOTH
ENDS! The spring guards help protect the hose from kinks or bends at or close hose rupture.
TIGHTEN all
pressure fluid can dislodge a
­sure spray
NEVER use a damaged hose. Before each use, check the en
tire hose for cuts, leaks, abrasion. bulging cover, or damage or
movement ist, replace the hose immediately. pressure hose or mend it with tape or any other device.
paired hose cannot contain the high pressure fluid.
HANDLE AND ROUTE HOSES CAREFULLY. hoses and hot surfaces of the pump and gas engine.
-
or solvents which are coverofthe hose.
above
Hose
Proper hose grounding continuity is essential
groundedspriy system. Checkthe electrical resistanceof your
fluid hoses at least once a week. tag on it which specifies the maximum electrical resistance,
conlact the hose supplier or manufacturer for the maximum re
sistance limits. Use a resistance meter in the appropriate range for your hose the recommended limits, replace it immediately. An un grounded or poorly grounded hose can make your system haz
ardous.
lo
of
to
move equipment. Keep hoses clear of moving paris
62"
C or below -40' C.
Grounding
Also
in
the hoses can be very dangerous.
to
the coupling which can result in
fluid connections securely before each use. High
be emitted from the coupling.
the hose couplings.
loose coupling or allow high pres
If
DO
to
any kind of wear,
any of these conditions ex
NOT try
to
Do
not
DO NOTexposeGraco hosetotemperatures
compatible with the inner tube and
Do
Continuity
to
If
your hose does not have
to
check the resistance.
read FIRE
OR
EXPLOSION HAZARD.
If
the resistance exceeds
If
the
recouple high
no1 use fluids
maintaining a
A
re-
not pull on
a
-
-
-
-
-
-
FIRE OR EXPLOSION HAZARD
2.
Fluid
Static electricity is created by the flow of fluid through the pump and hose.
grounded, sparking may occur, and the system may become
hazardous. Sparking may also occur when plugging in or plugging a power supply cord or using a gasoline engine. Sparks can ignite fumes from solvents and the fluid being
sprayed, dust particles and other flammable substances, whether you are spraying indoors or outdoors, and can cause a
fireorexplosionandseriousbodilyinjuryandpropertydamage.
If
you experience any static sparking or even a slight shock
while using this equipment,
ATELY. Check the entire svstem for orooeroroundina.
use the system again until corrected.
If
every pari of the spray equipment is not properly
STOP
the problem has b>en idenzfied and
SPRAYING IMMEDI-
Do
un-
not
Grounding
To reduce the risk of static sparking, ground the sprayer and all other spray equipment used or located in the spray area.
CHECKyourlocalelectricalcodefordetailedgroundinginstruc-
tions for your area and type of equipment. BE SURE all of this spray equipment:
1.
Sprayecconnect a ground wire and clamp (supplied)
true earth ground.
to
ground
to
a
3.
4.
5.
6.
7.
Flushing
Reduce the risk of fluid injection injury, static sparking, or splashing by following the flushing procedure given on page 11
&
page
partofthegunfirmlytothesideofagroundedmetalpailanduse
the lowest possible fluid pressure during flushing.
hoses:use only grounded hoses with a maximum of
150 m combined hose length ity. See Hose Grounding Continuity.
Spraygun: obtain grounding through connection erly grounded fluid hose and sprayer.
Object
being
sprayed: according
Fluid
supply container: according
All solvent pails used when flushing, according code. Use only metal pails, which are conductive. Do not place the pail on a non or cardboard, which interrupts the grounding continuity.
To
maintain grounding continuity when flushing orrelieving pressure, always hold a metal part of the gun firmly side of a grounded
Safety
12 of this manual. Follow the Pressure Relief Procedure
4.
and remove the spray tip before flushing. Hold a metal
metal pail, then trigger the gun.
to
ensure grounding continu-
to
a prop
to
local code.
to
local code.
to
local
-
conductive surface, such as paper
to
the
on
IMPORTANT
United States Government safety standards have been adopted under the Occupational Safety and Health Act. These standards- particularly the General Standards, Part 1910, and the Construction Standards, Part 1926 - should be consulted.
-
307-670
5
1.
Connect Hose and Gun.
Refer
to
Fig
SETUP
6-1
NOTE:
2.
When tightening fittings at the pressure control,
hold one wrench firmly on the hex of the pressure control fitting to keep it from rotating. Use an other wrench to tighten the mating fitting.
a. Remove the cap from the filter outlet nipple and
screw the
b. Connect the whip hose between the fluid hose
and the gun inlet connection.
c. Don't use thread sealant, and don't install the
spray tip yet!
If you are supplying your own hoses and spray gun, be sure the hoses are electrically conduc tive, that the gun has a tip guard and that each part is rated for at least sure. This is to reduce the risk of serious bodily injury caused by static sparking, fluid injection or over
-
pressurization and rupture of the hose or
gun.
Two Gun Hookup.
npsm(m) nipple - See
cessory hose and gun. See
To
avoid damaging the pressure control, which
may result in poor equipment performance and
component damage, follow these precautions:
1.
Always use nylon spray hose at least
long.
15.2
m main
WARNING
CAUTION
fluid
hose onto the nipple.
207
bar
Working
Remove the cap from the
Fig
6-1
-
and attach an ac-
Fig
6-2.
Pres
15.2
-
-
m
-
1/4.
Fig
6-1
ON/OFF SWITCH
DO NOT INSTALL ANY
SHUTOFF DEVICE
HERE
\
2.
Never use a wire braid hose as it is act
as
a pulsation dampener.
3.
Never install any shutoff device between thefil-
ter and the main hose. See
4.
Always use the main filter outlet for one gun op eration. Never plug this outlet.
3. Fill Packing Nutwet-Cup.
Fill the packing nut/wet-cup
Throat Seal Liquid (TSL), supplied.
4.
Check the Electrical Service
a. Be sure the electrical service is properly rated for
your sprayer and that the outlet you use is prop
erly grounded.
b. Have a licensed electrician attach an appropri
ate plug
c. Use an extension cord which has
minimum12gaugesize,andamaximumof45m
long. Longer lengths may affect sprayer per
formance.
to
the power supply cord.
Fig
See
1/3
6-1.
Fig
full
too
6-1
with Graco
3
wires of a
rigid to
-
-
...
^.
.
-
\
SECONDARY HOSE
-
.
HOSE
'
PRESSURE DRAIN VALVE
6
307-670
5.
Plug
in
the Sprayer.
OFF.
Then plug the cord into a grounded electrical
outlet at least
6
Be sure the
ONlOFF
m away from the spray area.
WARNING
Proper electrical grounding is essential
to
reduce
the risk of fire or explosion which can result in seri-
ous
bodily injury and property damage. Refertothe
warning section
FIRE
OR
EXPLOSION HAZARD
on page 5 for more detailed grounding instructions.
f
6.
Flush the pump
was left in
to
a. Before using water
to remove the lightweight oil which
protect pump parts after factory testing.
-
base paint, flush with min eral spirits followed by soapy water, and then a clean water flush.
b. Before using oil
spirits only.
c. See
FLUSHING GUIDELINES
-
base paint, flush with mineral
-.
on page
for the flushing procedure.
SETUP
switch is
11
&
12
7.
Prepare the
paint
according
to
the manufacturer's
recommendations. a. Remove any skin that may have formed.
b. Stir the paint
to
mix pigments.
c.. Strain the paint through a fine nylon mesh bag
(available at most paint dealers)
to
remove parti
­cles that could clog the filter or spray tip. This is probably the most important step toward
trouble
-
free spray painting.
I
-
307470
7
'(
OPERATION
WARNING
Pressure Relief Procedure
To
reduce the risk of serious bodily injury, including fluid injection, splashing fluid or solvent in the eyes or on the skin, or injury from moving parts or electric shock, always follow this procedure whenever you shut off 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.
Turn the ONlOFF switch
3. Disengage the gun safety latch.
part of the gun firmly metal pail, and trigger the gun sure.
4. Engage the gun safety latch,
5.
Open the pressure drain valve, having a con tainer ready valve open until you are ready
lf you suspect pletely clogged,
relievedaffer following
around the tip guard retaining nut or hose end cou- pling and VERY SLOWLY loosen the part lieve pressure gradually, then loosen completely. Now clear the tip or hose.
to
catch the drainage. Leave the
that
the spray
or
that
to
OFF.
Hold a metal
to
the side of a grounded
to
relieve pres
to
spray again.
tip
or
hose
pressure
the
has
not been fully
steps above,
wrap a rag
is
*
com
to
re
-
-
-
-
the
3. Put the suction tube into
4.
Lower the pressure setting
adjusting knob all the way counterclockwise. See
9-1.
5.
Disengage the gun safety latch.
6.
To prime the pump,
firmly against and aimed into a metal waste con tainer. open, turn the crease the pressure setting until the sprayer starts. Keep the gun triggered until all air is forced system and the paint flows freely from the gun. Re lease the trigger and engage the gun safety latch.
NOTE:
7. Check all fluid connections for leaks.
found, follow the
ing, to
8.
Install the Spray Tip and Tip Guard.
gun safety latch is engaged. See spray tip.
ual307-848, supplied with the gun, for installation in-
structions.
9.
Adjust the Spray Pattern
See
Fig
9-2.
ON/OFF switch
If the pump is hard
under the pressure drain valve and open it. When fluid comes from the valve, close it. Then disengage the gun safety latch and proceed as in Step
6,
above.
the left, before tightening connections.
If
using the
hold a metal part of the gun
Squeeze the trigger and hold it
to
Pressure Relief Procedure Warn
RAC
paint container.
by turning the pressure
See
Fig
to
ON, and slowly in
prime, place a container
If
Be sure the
Fig
9-3.
install the
IV tip guard, refer
9-3.
out
of the
any are
to
man-
Fig
-
-
i
i
i!
-
-
Startup
Use this procedure each time help ensure the sprayer is ready
start it safely.
NOTE:
1.
2.
For the first time startup, be sure sprayer first. See page
GUIDELINES.
Close the pressure drain valve.
stalled a secondary hose, be sure the nipple is firmly
plugged with the cap.
Don't install the spray tip yet!
.'
you
to
11
See Fig
start the sDraver
operate and that you
to
&
12
for
FLUSHING
If you have not in
9-1.
to
flush the
a. Increase the pressure adjusting knob setting just
until spray from the gun is completely atomized.
To avoid excessive overspray and fogging, and
to
decrease tip wear and extend the life of the sprayer, always use the lowest possible pres sure needed
b. If more coverage is needed, use a larger tip
rather than increasing the pressure.
c. Test the spray pattern. TO adjust the direction of
-
the spray pattern, engage the gun safety latch and loosen the retaining nut. Position the tip guard horizontally for a horizontal pattern or ver-
tically for a vertical pattern. Then tighten the re
taining nut.
to
get the desired results.
-
-
8
307-670
OPERATION
Cleaning a Clogged
Tip
WARNING
To reduce the risk of serious bodily injury from fluid injection:
NEVER operate the spray gun with thetipguard re moved.
DO
NOT hold your hand, body, or a rag in front of the spray tip when cleaning or checking a clogged tip. Always point waste container when checking to see
thegun toward the ground or into a
if
the tip is
clear.
DO NOT
try
to "blow back" paint: this is NOT an air
mrav sDraver.
1.
Clean the front of the tip frequently during the day's operation. First, follow the
dure Warning
soaked
brush^
on page 8. Then use a solvent-
to wipe-away fluid build-up, which
Pressure Relief Proce
helps prevent tip clogging.
-
-
Fig
9-1
NEVER OPERATE THE GUN WITH THE TIP GUARD
REMOVED
2.
If the spray tip does clog, release the gun trigger, en gage the gun safety latch, and rotate the RAC dle
180".
See
Fig
9-3.
3.
Disengage the gun safety latch and trigger the gun
IV
han
into a waste container. Engage the gun safety latch again.
4. Return the handle to the original position, disengage the gun safety latch, and resume spraying,
5.
If the tip is still clogged, engage the gun safety latch, shutoff and unplug the sprayer, and open the pres sure drain valve to relieve pressure. Clean the spray tip as.shown in manual 307-848, supplied with the
RAC IV.
RAC
IV
HANDLE SHOWN
IN SPRAYING POSITION,
HANDLElBO",
TURN
DISENGAGES
LATCH AND TR
GUN
TO
CLEAR
GUN SAFETY LATCH SHOWN EN. GAGED
-
-
-
MAINTAIN FIRM
METAL TO METAL
CONTACT WHEN
Fig
9-2
FLUSHING
1
Fig
9-3
307-670
9
~~~
SHUTDOWN AND CARE
WARNING
To reduce the risk of serious bodily injury, including
on
fluid injection or splashing in the eyes or or injury from moving parts, always follow the
sure Relief Procedure Warning
on page checking, adjusting, cleaning and shutting down the sprayer.
1
.
Check the packing nuvwet-cup daily. First follow the
Pressure Relief Procedure Warning
Be sure the wet-cup is 1/3 full of TSL at all times
help prevent fluid buildup mature wear tight enough
of packings. The packing
to
stop leakage, but no tighter. Over
on
the piston rod and pre-
tightening may cause binding and excessive packing wear. Use a round punch or brass rod and light ham mer
to
adjust the nut. See
Fig
10-1.
2. Clean the fluid filter often and whenever the sprayer is stored. First follow the
dure Warning
307
-
273, supplied, for the cleaning procedure.
on
Pressure Relief Proce
page 11. Refer
the skin,
Pres
-
11
before
on page
11.
to
nut should be
-~
to
manual
__
5.
For very short shutoff periods, leave the suction tube
in the paint, follow the
Warning
6.
Coil the hose and hang it
on page 11, and clean the spray tip.
ing it, even for overnight,
Pressure Relief Procedure
on
the hose rack when stor
to
help protect the hose
-
from kinking, abrasion, coupling damage, etc.
WARNING
Refer
to
the warning section
page 5 for information on the hazard
HOSE SAFETY
of
using dam
on
-
aged hoses.
-
-
3. Lubricate the bearing housing after every 100 hours of operation. Fill the connecting rod cavity with
No.
10 non-detergent oil.
4.
Flush the sprayer at the end of each work day and it with mineral spirits and freezing. See page
11.
'To
prevent pump corrosion, and
chance of fluid freezing in the pump
to
help prevent pump corrosion
FLUSHING GUIDELINES
CAUTION
to
reduce the
or
pressure con
SAE
fill
on
­trol in cold weather, never leave water or any type of paint in the sprayer when it is can seriously damage the sprayer or result in a
not
in use. Freezing
loss
of pressure or stalling.
I
I
PACKING
Fig
10-1
NUT/
10
307-670
FLUSHING GUIDELINES
Pressure Relief Procedure To reduce the risk of serious bodily injury, including fluid injection, splashing fluid or solvent in the eyes or on the skin, or injury from moving parts or electric shock, always follow this procedure whenever you
shut off 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.
Turn the ON/OFF switch to
3.
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.
OFF,
4.
Engage the gun safety latch.
5.
Open the pressure drain valve, having acontainer
ready to catch the drainage. Leave the valve open until you are ready to spray again.
If
you
suspect that the spray tip or hose
clogged, or that pressure
has
not
been
is
completely
fully
relieved after following the steps above, wrap a rag around the tip guard retaining nut or hose end coupling and VERY SLOWLY loosen the part to relieve pressure gradually, then loosen completely. Now clear the tip or hose obstruction.
1
1.
New Sprayer. Your new sprayer was factory tested
2
in lightweight 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-basepaint, flush with mineral spirits
only.
2.
Changing Colors. Flush with a compatible solvent such
as
3.
Changing
mineral spirits
from
or
water.
water-base
to
oil-base paint.
Flush with warm, soapy water, then mineral spirits.
4.
Changing
from
oil-base to water-base paint.
Flush with mineral spirits, followed by warm, soapy
water, then a clean water flush.
5.
Storage.
3
4
CAUTION
NEVER leave water in the sprayer
if
there
is
slightest chance it could freeze. Push the water out with mineral spirits. Water left to freeze in the pres­sure control tube prevents the sprayer from being started and causes serious damage to the pressure control.
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 outthe mineral spir- its with the paint to be sprayed and the sprayer ready to use.
the
is
Water
-
base paint: flush with water, then mineral spirits and leave the pump, hose and gun filled with mineral spirits. Shut off the sprayer, open the pres sure drain valve to relieve pressure and leave it open.
Oil-basepainttfiush with mineral spirits. Shut
off
the sprayer, open the pressure drain valve to relieve pressure and leave
it
open.
-
Continued on page
12.
307-670
11
~
How
to
Flush
~~
~~
FLUSHING GUIDELINES
1.
Follow the
page
2.
If
the sprayer has been used before, remove the filter
bowl and screen: see manual 307
Pressure Relief Procedure Warning
1
1.
-
273, supplied. Clean the screen separately and install the bowl without the screen to flush
FILTER
BOWL
it.
See
Fig
PRESSUR*
DRAIN VALVE
12-1.
on
7. Hold a metal part of the gun firmly against and aimed into a metal wastecontainer. the trigger and hold to
ON,
and slowly increase the pressure setting until
it
open, turn the
SeeFig
12-2.
Squeeze
ON/OFF
switch
the sprayer starts. Keep the gun triggered until all air is forced out
of
the system and the solvent flows
freely from the gun. Release the trigger and engage
thegunsafetylatch.Thisprocedurehelpsreducethe
risk of static sparking and splashing.
NOTE:
If the pump is hard to prime, place a container
under the pressure drain valve and open it. When fluid comes from the valve, close it. Then disengage the gun safety latch and proceed as in Step 7, above.
8.
Remove the suction tube from the pail. Disengage the gun safety latch and trigger the gun vent from the hose.
Do
not let the pump run dry for
to
force
sol
more than 30 seconds to avoid damaging the pump packings! Then follow the
dure Warning
9.
Leave the pressure drain valve open until you are
on page
ready to use the sprayer again.
Pressure Relief Proce-
11.
If
the screen was re moved, unscrew the filter bowl and reinstall the clean screen. Reinstall the bowl, hand tight only.
IO.
If
you flushed with mineral spirits and are going to use a water lowed by a clean water flush. Then follow the
sure Relief Procedure Warning
-
base paint, flush with soapy water fol
Pres
on page
11.
-
-
(
-
-
i
Fig 12-1
3. Close the pressure drain valve.
4.
Pour
2.
liters of compatible solvent into a grounded
metal pail. Put the suction tube in the pail.
5.
Remove the spray tip from the gun,
6.
Lower the pressure setting by turning the pressure
if
it
is installed.
adjusting knob all the way counterclockwise.
Fig
12-2
12
307-670
TROUBLESHOOTING
Pressure
To
reduce
fluid
the
alwaysfollowthisprocedurewhenever
sprayer,
sDrav
sprajl
1.
2.
3.
4.
Relief
the risk
iniection.
eyes
svstem.
tips,
Engage
Turn the
Unplug
Disengage the
or
on
when
and
the
the
th'e ikin,
ON/OFF
iniuw
checking
when whenever
gun
power supply
Procedure
of
serious bodily injury,
from
solashina
moving
installing,
or
sewicing
park
cleanina
yoistop
safety latch.
switch to
cord.
gun
safety
latch. obstruction.
fluid
or
spraying.
OFF.
or
electric
you
any
or
WARNING
'5.
Hold
including
solvent
in
shock,
shut
off
part
the
of
the
changing ready
"
grounded
oressure.
6,
ingage
7.
Open
8.
Leave
ready to spray
lf
you
clogged,
ter
following
auard retainina nut SLOWLY
ally,
then
GUIDE
a
metal
part
metal
the
gun
the
Pressure
to
catch the drainage.
the
pressure
suspect
that
orthatpressure
the steps
loo&&
loosen
the
completely.
of
pail,
safety
drain
drain
again.
the
spray
above,
or
hose
part
the
gun
firmly
to
and
trigger
the
latch.
valve, having
valve
open
tip
or
has
to
hose
notbeen
wrap a rag around the
end
relieve pressure
Now
fullyrelievedaf
coudina
clear the tip
the
side
gun
to
a
Container
until
you
is
complete/y
and
or
of
a
relieve
are
tip
VERY
gradu
hose
-
-
:heck everything
TYPE
OF
Basic Fluid Pressure Problems
Basic Mechanical Problems
in
the
PROBLEM
guide
-
E
%ask Electrical Problems
before
disassembling
~ ~~
TO
WHAT
If
check
1.
Check the pressure control knob setting.
The motor
mum setting (fully counterclockwise).
2.Checkforacloggedspraytip.Refertoyour
separate gun or tip instruction manual.
1. Check for frozen or hardened paint in the pump (39)
don tube. Using a screwdriver, carefully try to rotate fan at back of motor by hand. See page 19.
2.
Check displacement pump connecting rod pin
into connecting rod spring (35) should be firmly in groove connecting rod. See page
3. Check for.motor damaae. Remove drive housing
to rotate fan by hand.
1.
Check electrical supply with volt meter. Meter should read 190
2.
Check extension cord for visible damage.
Use a volt meter or test lamp at extension
cord outlet to check.
3. Check sprayer power supply cord for visible damage such as broken insula tion or wires.
4.
Check motor brush leads. terminals and brush length. Brush length should be mm minimum. See page 33.
CHECK
is
OK,
will
andlor pressure control bour-
(20).
It must be completelypushed
assembly~(2). 3ee page
the
go
to
the next check.
not run
sprayer.
if
it
is at the mini
(3)
and retaining
31.
-
250 Volts.
32.
(3ql)
Try
14
WHAT
If
1.
-
2.
1.
2.
01
3. Replace motor
1. Reset building circuit breaker: replace
2.
3.
-
4.
TO
check
Slowly increase the pressure setting to
if
the motor starts.
Relieve pressure, refer to your separate
gun or tip instruction
ing.
Thaw. Plug in sprayer and turn
crease pressure setting to see starts. ment pump packings (see manual 307 control box (301). See page 27.
Push pin into place and secure with the re
taining spring.
building fuse. Try another electrical outlet.
Replace extension cord.
Replace power supply cord. See page
Tighten terminal screws; replace brushes.
See page 33.
DO
is
not
OK,
refer
to
this column.
manual.for tip clean
on.
If
it
doesn't, replace the displace
-
793) andlor replace the bare pressure
(1)
if
fan won't turn.
see
Slowly in
if
motor
22.
-
-
-
-
if
Thaw the sprayer not try
to
start the sprayer until it has thawed completely.
If
operate. manual
When replacing the bare pressure control box (item 301), remove the and reinstall these parts in the bare box.
paint hardened (dried) in the sprayer, the pump packings andlor bare pressure control must bereplaced. See page
307-793.
water or water-based paint has frozen
in
it,
due to exposure to low temperatures, by placing it in a warm area.
If
the bourdon tube was not damaged by
OWOFF
the
freezing,the pump should
switch, bridge, circuit board and electrical hardware
27
Do
or
307-670 13
‘YPE
OF
PROBLEM
WHAT TO CHECK
If
check
is
OK,
go
to the next check.
WHAT
If
TO
check is not
DO
OK,
refer to this column.
Diagnosing circuit board indicator lamps. The nor mal condition clear lamp on when
telhg pump
Follow Pressure Relief
Procedure Warning.
move gun from hose. Re move pressure control cover and check for faulty tion of circuit board lamps.
Condition
Both lamps on; pump
won’t operate and motor
is
not
is
to
A
running
red lamp on,
boardis
run.
Re-
condi-
1.
Check leads from bridge
be sure they are securely fastened ana
­properly mated.
2.
Check
GI
and circuit board (118) and bridge (308) for damage or loose terminals.
-
3.
Check for loose motor brush lead connec tions and terminals. See page 33.
4.
Checkbrush length which should be minimum. See page 33.
NOTE:
same rate on both sides Check both brushes.
5.
Check for brocen or misaligned motor
brushsprings.Rolledportionofspringmust
reslsquarrelyontopofbrush.Seepage33.
6.
Check motor brushes for binding in brush holders. See page 33.
7.
Check motor armature commutator for burn spots, gouges and extreme ness. Remove motor cover and brush
spection plates
3.
Check motor armature for shorts using ar mature tester (growler) or perform spin
test. See page 19.
3.
Check bridge (308) by substituting with a good bridge or performing bridge test. See page
CAUTION:
mature is determined to be good. A bad ar mature bridge.
The brushes do not wear at the
20.
Do
will
G2
to
not perform this check until ar
immediately burn out a good
(308)
connections between
of
check. See page 28.
to
motor tc
14
mm
the motor.
rough-
in-
1. Replace any loose terminals and crimp to
leads. Be sure male terminal blades are
straight and firmly connected to mating part.
2.
Clean circuit board male terminals. Re place loose or damaged terminals.
curely reconnect leads.
3. Tighten terminal screws. Replace
­brushes
33.
4.
Replace brushes. See page 33.
5. Replace spring with brush. See page 33.
6.
Clean brush holders. Remove carbon with small cleaning brush. leads with free vertical brush movement.
7.
Remove motor and have motor ShOD resurface commutator page 35.
8. Replace motor. See page 35
-
9. Replace bridge. See page
-
-
if
leads are damaged. See page
if
broken. Realign spring
slot
in brush holder to assure
Align
if
possible. see
24
Se-
brush
-
!
WIRING DIAGRAM
14
307-670
I
302
Loading...
+ 30 hidden pages