8
824113
Intermediate Problem Solving
TYPE OF PROBLEM
WHAT TO CHECK
If check is OK, go to next check
WHAT TO DO
When check is not OK, refer to this column
Spray Pattern Variations
1. Spray tip worn beyond sprayer pressure capa-
bility.
1. Replace spray tip.
NOTE: A smaller size tip will provide
longer life.
2. Transducer (29) for wear or damage.
2. Replace transducer. See page 17.
3. Pressure control (64) for smooth operation.
3. Replace pressure control. See page 16.
4. Low output section, page 7.
Motor Is Hot and Runs
Intermittently
1. Determine if sprayer was operated at high pres-
sure with small tips, which causes excessive
heat build up.
1. Decrease pressure setting or increase tip
size.
2. Be sure ambient temperature where sprayer is
located is no more than 90 F (32 C) and
sprayer is not located in direct sun.
2. Move sprayer to shaded, cooler area if
possible.
3. Motor.
3. Replace motor. See page 13.
Building Circuit Breaker
Opens As Soon As
Sprayer Switch Is
Turned On.
1. All electrical wiring for damaged insulation, and
all terminals for loose fit or damage. Also check
wires between pressure control and motor. See
page 13.
1. Repair or replace any damaged wiring or
terminals. Securely reconnect all wires.
2. For missing motor brush inspection plate gas-
ket (see page 9), bent terminal forks or other
metal to metal contact points which could
cause a short.
2. Correct faulty conditions.
3. Motor armature for shorts. Use an armature
tester (growler) or perform motor test. See page
9. Inspect windings for burns.
3. Replace motor. See page 13.
4. Motor start board (47) by substituting with a
good board.
CAUTION: Do not perform this check until
motor armature is determined to be good. A
bad motor armature can burn out a good board.
4. Replace board. See page 14.
Circuit breaker opens
after sprayer operates
for 5 to 10 minutes.
1. Basic Problems – Electrical on page 5.
Building circuit breaker
opens as soon as sprayer
is plugged into outlet and
sprayer is NOT turned on.
1. ON/OFF switch (52).
Be sure sprayer is un-
plugged! Disconnect wires from switch. Check
switch with ohmmeter. The reading should be
infinity with ON/OFF switch OFF, and zero with
switch ON.
CAUTION: A short in motor circuit can damage
switch and or motor start board (47).
1. Replace ON/OFF switch. See page 14.
2. Electrical supply. Meter must read: 105–125
VAC for models 820169 and 824175.
2. If voltage is too high, do not operate
sprayer until corrected.
Unit will not run on gener-
ator but does run on AC
power
Generator peak voltage. Models 820169 and
824175.will not run if the peak voltage is above 190V.
Use AC power or a different generator
