PREVENTIVE MAINTENANCE
At
least twice daily and durine any lenethy:
interruption
of
sprayinq,
with
material
pressure
relieved: remove and clean
gun
spray tip and tip
filter
in
clean
solvent
of
a
type recommended by
manufacturer
of the material beine smayed. Blow
~.
~ ~ ~~
_.
.
parts
dry
with
air
pressure.
Also
kerse
gun
nozzle
in
clean
solvent during shut
down
periods.
SHUTDOWN PROCEDURE
To
maintain
efficient operation of unit,
each
day's spraying must be diligently followed:
this
shutdown procedure
at the completion
of
filter cartridge
or
screen,
if
used. Close
drain
valve.
i'rom
spray
gun.
Immerse
in
clean
recornended
bristled brush.
Using the air blower valve
type solvent and
wash
thoroughly with a fine
205-541
attached to air manifold
162-376,
blov
air through tip
from
front to back and through
open end
of
filter.
Refer to Fig.
1.
Keep
cotmuended
type
solvent
until ready
to
start
spray
gun
forward end submerged
in
&&
re-
3.
Remove spray tip and filter,
if
used,
spraying again.
NOTE:
Do
not remove the swaq
completely flushed. Keeping
unit
fully
charged
em
from dispensine hose unless the unit
is
to be
..
ON-OFF
air
control petcock
202-338.
See Fig.
1.
1.
Shut off air to pump
by
closing pump
Handle
is
at right angle to petcock body when
closed.
with material
will
minimize~the
necessity for
flushing
unit.
m:
Water based paints
will
requke a
and spray
gun
by
opening
drump
valve of -ifold.
of
all external moving pump
parts
to prevent the
2.
Relieve material pressure in
pump,
hose
,
final flushing with solvent
DAILY
and also
Oiling
This
will
allow
the material trapped in the system
rusting
of
the wetted parts. To completely flush
to
drain
back into material container.
After
ma-
unit
follow
the procedure outlined
in
subsequent
terial has stopped draining, remwe and clean
paragraph entitled
FLUSHINC
UNIT.
-SERVICE
DIAGNOSIS
TROUBLESOME
sIMPpOM.5
CHECK
POINT
NOS.
Fump
fails
to operate,
no
material
discharge.
.............
1-2-3-4-6-9-11
Insufficient material breakup..
..........................
1-3-4-6-6-9
1-24-6-ll
Tails
in
spray pattern............
.......................
Excessive surge
at
spray
gun
2-4-7-Y,
Pump operates, but insufficient material discharge.......
1-2-9-10-12
.............................
..........................
............................
Too
heavy a coating thic.ess
CHECK
POINT
NO.
13
Spray
gun
spitting.............
5-10-11
mssmm
CAUSES
-
l........
Material too viscous
6
........
Air
regllator set too high.
5........
Air
regulator inoperative
or
set too
low.
L........
Air
valve closed
or
clogged.
3........
Insufficient air capacity.
2
........
Restricted
ak.
supply line.
Clogged material filter, tip
or
tip filter.
9........
Clogged materid intake strainer.
e........
Insufficient
material
in
container.
7........
lo........
Worn,
damaged
or
obstructed
gun
parts.
l?........
Surge chamber inactive,
if
used.
12........
Improper
or
worn
spray
gun
tip.
ll........
Hish flow rate-tip orifice too large.
Worn
or
obstructed pump valves
or
packings.
U......,.
MAINTENANCE
IMPORTANT NOTES
1.
Keev unit, mixine container. thinner,
particles rbich could clog strainer screens andl
solvent. and material
CLEAV
and free
of
foreisn
or
plug the small orifice
in
spray tip.
and smav
mn
clean
solvent after
flushin4
unit and until
head immersed
in
recommended type
2.
Keep lower
vump
Assembl-f filled nith
ready to
start
sprayine again.
-3.
TO
reliive-unit
Of
unnecessary pressure
when not in use, shut
off
air pressure to pump
and relieve material pressure
in
system by opening
dump valve
of
manifold
or
filter.
4.
Daily
or
more often
if
experience
in-
dicates necessar
,
drain filter
or
surge tank, re-
more
filter
cart:idne
or
screen.
if
used, and
~
and close dump valve.
7
..
....................