Graco T-Max 506 Manual De Operación página 33

Troubleshooting
Low or Fluctuating Output
PROBLEM
Motor runs and pump strokes
Motor runs but pump does not stroke
Electrical Short
PROBLEM
Building circuit breaker opens as soon
as sprayer switch is turned on.
CAUTION
Any short in any part of the motor
power circuit will cause the control
circuit to inhibit sprayer operation.
Correctly diagnose and repair all shorts
before checking and replacing control
board.
Building circuit breaker opens as soon
as sprayer is plugged into outlet and
sprayer is NOT turned on.
Sprayer quits after sprayer operates for
5 to 10 minutes.
312891E
CAUSE
1. Material supply.
2. Loose fittings.
3. Intake valve ball and piston ball are seating
properly.
4. Leaking around throat packing nut which may
indicate worn or damaged packings.
5. Pump rod damage.
1. Displacement pump pin (75) (damaged or
missing).
2. Connecting rod assembly (45) for damage.
3. Gears or drive housing.
CAUSE
1. All electrical wiring for damaged insulation, and
all terminals for loose fit or damage. Also wires
between pressure control and motor.
2. Motor armature for shorts. Inspect windings for
burns
3. Motor control board by performing motor control
board diagnostics. If diagnostics indicate,
substitute with a good board.
1. Basic Electrical Problems on page 31.
2. For damaged or pinched wires in pressure
control.
1. Basic Electrical Problems.
2. Electrical supply with volt meter.
Meter must read:
210-255 Vac for 220-240 Vac models;
85-130 Vac for 100-120 Vac models.
Repair / Réparation / Reparación / Repareren / Reparatur
1. Refill hopper and reprime pump.
2. Tighten; use thread sealant or sealing
tape on threads if necessary.
3. Remove intake and piston valves and
clean. Check balls and seats for nicks or
obstructions; replace if necessary, page
18. Clean hopper before using to remove
particles that could clog pump.
4. Replace packing, page 18. Also check
piston valve seat for hardened paint or
nicks and replace if necessary.
5. Repair pump.
1. Replace pump pin if missing. Be sure
retainer spring (76) is fully in groove all
around connecting rod.
2. Replace connecting rod assembly.
3. Inspect drive housing assembly and
gears for damage and replace if
necessary.
1. Repair or replace any damaged wiring or
terminals. Securely reconnect all wires.
2. Replace motor.
3. Replace with a new pressure control
board.
1. Perform necessary procedures.
2. Replace damaged parts.
1. Perform necessary procedures.
2. If voltage is too high, do not operate
sprayer until corrected.
SOLUTION
SOLUTION
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