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Troubleshooting
To reduce the risk of serious injury, follow the
Pressure Relief Procedure
on page 11
before
doing this procedure. Unplug the sprayer1
Basic Problem Solving
Checkeverything in the guide before disassembling
the sprayer.
YPE OF PROBLEM
luid pressure
lechanical
lectrical
JTE: Thaw SDraver if watt
MHAT TO CHECK
f check
is OK.
(10
to next check
I,
Check pressure control knob setting.
The pump
won't develop much pressure
if it is at minimum
setting (fully counterclockwise).
used.
See page
10.
. I
! .
Check for a clogged spray tip or fluid filter, if
I-
Check for frozen or hardened paint
in pump
fan
at
back
of
motor by hand. See page 19.
(20). Using
a
screwdriver, carefully try to rotate
?,
Check pump connecting rod pin (17). It must be
completely pushed into connecting rod (15),
and retaining spring
(1
8) must be firmly in con-
necling rod groove. See Fig. 16, page 22.
1,
Check for motor damage. Remove drive hous-
ing assembly (11). See page 28. Try to rotate
motor fan by hand.
I, Check electrical supply with volt meter. Meter
should read 105-125 VAC.
-
T
-
F,
-
N
-
E
b
N C
I
A
?r or water-based paint has frozen in
it,
due to exposure to low temperatures, by placing in a warm
area.
Do not try tcstart sprayer until completely thawed or damage to motor andlor start board may occur. If paint hardened
(dried) in sprayer, the pump packings (page 22) and/or pressure transducer (page 30) must be replaced.
?.
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
(50)
for vis-
1 .
Check motor brushes for the following:
a. Loose terminal screws.
b. Broken or misaligned brush springs.
ible damage such as broken insulation or wires.
c. Brushes binding in holders.
d. Broken leads.
e. Worn brushes.
on both sides of motor. Check both brushes.
NOTE The brushes do not wear at same rate
WHAT TO DO
When check
is not OK, refer
to this column
1. Slowly increase pressure setting to see if
motor starts.
2.
If tip is still clogged, relieve pressure: re-
fer to separate gun or tip instruction man-
ual for tip cleaning. Clean the filter, if
used.
1.
Thaw. Plug in sprayer and turn
on.
Slowly
starts. If it doesn't, see NOTE, below.
increase pressure setting to see if motor
2.
Push pin into place and secure with
spring retainer.
3. Replace motor (4)
if fan won't turn. See
page 26.
1.
Reset building circuit breaker; replace
building
fuse. Trv another outlet.
-
2. Replace extension cord.
3. Replace power supply cord.
See page
27.
4.
Refer to page 21.
a. Tighten.
b. Replace broken sprlng andlor align
spring with brush
c. Clean brush holders. Remove carbon
with small cleaning brush. Align brush
leads with slot
in
brush holder to as-
sure free vertical brush movement.
d. Replace brushes
e. Replace brushes
if less than long.
308-216
15
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