MOTOR
IS
HOT AND RUNS INTERMITTENTLY
TYPE
OF
PROBLEM
WHAT TO CHECK
If check is
OK,
go
to
next
check
WHAT TO DO
ing
for a while and relieve fluid pressure.
ized,
butnotoperatingforlongperiodsoftime.
3 Turn
off
sprayer whenever you stop spray-
3. Determine
if
sprayer was turned on, pressur-
sprayer is not located
in
direct sun.
sible.
located is no more
than
32%
(90OF)
and
sbe.
pressurewithsmalltips,whichcauseslowmo-
tor RPM and excessive heat build
up.
tently.
1.
Decrease pressure setting or increase
tip
1.
Determine
if
sprayer was operated at high
Motor is hot and runs intermit-
When check is
not
OK
refer
to
this column
2.
Besureambienttemperaturewheresprayeris
2.
Movesprayertoshaded,coolerareaifpos-
ELECTRICAL SHORT
TYPE
OF
PROBLEM
Building circuit breaker opens
as
soon as sprayer switch
is
turned on.
CAUTION
Any short
in
any part of the
motorpowercircuitwillcause
the control circuit to inhibit
sprayer operation. Correctly
diagnoseand repairallshorts
before checking and replac-
ing control board.
assoonassprayerisplugged
Buildingcircuitbreakeropens
into outlet and sprayer is NOT
turned on.
sprayer quits after sprayer
op-
)rates for
5
to
10
minutes.
WHAT
TO
CHECK
WHAT TO
DO
If check is
OK,
go
to
next
check
When check is
not
OK
refer
to
this column
I
1.
Checkallelectricalwiringfordamagedinsula-
Also check wires between Dressure control
terminals. Securely reconnect all wires.
tion, and
all
terminals for
loose
fit
or damage.
1.
Repair or replace any damaged wiring or
and motor which are encased in conduit
(1).
See
page
27.
2.
Checkformissinginspectionplategasket(see
2.
Correct faulty conditions.
..
page27),bentterminalforksorothermetalto
metal
contact points which could cause a
short.
3.
Check motor armature for shorts.
Use
an
ar-
3. Replace motor.
See
page 27.
mature tester (growler) or perform spin test.
See
page
17.
Inspect windings for burns.
4.
Checkpressurecontrol board (301) by substi-
2. Replace ON/OFF switch. See page
21.
?.
CheckON/OFFswitch (307)
See
page 21.
Be
1.
Perform necessary procedures.
1.
Check Basic Electrical Problems on page 12.
4.
Replace with anewpressure control board
tutingwithagoodcontrolboard.Seepage22.
(301).
See
page
22.
sure
the sprayer
is
unpluggedi Disconnect
wiresfromswitch.Checkswitchwithohmme-
ter.The reading should be infinity withtheONr
OFFswitchOFF,andzerowiththeswitchON.
I
3.
Check for damaged or pinched wires
in
the
1.
Perform necessary procedures.
I.
Check Basic Electrical Problems on page
12.
3. Replace damaged parts.
See
page
22.
pressure control.
See
page
22.
?.
Check electrical supply with volt meter. Meter
2.
If voltage is too high, do not operate
should read
200
to
250
VAC.
SDraver until corrected.
3.
Check tightness
Of
pump packing
nut.
Over-
3.
Loosen packing
nut.
Check
for leaking
tightening tightens packings on rod, restricts
around throat. Replace pump packlngs,
if
pump action,
and
damages packinas. necessaw.
See
Daoe
29.
1
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