SERVICE
Symptom1: Too Low Pressure
  • Possible cause A: leaking from hose or spray gun.

  • Corrective Action: check if any seal-ring broken,change it.

  • Possible cause B: Plunger seized up.

  • Corrective Action: if the machine irregular jitter,open the pump, if plunger seized up, change the seal-ring or plunger set.

  • Possible cause C: one-way valve broken.

  • Corrective Action: if the machine irregular jitter,open the pump,if one-way valve broken, change it.

  • Possible cause D: piston set broken.

  • Corrective Action: if the machien without irregular jitter, open the pump,if piston set broken, change it.


Symptom2: Too High Pressure
  • Possible cause:The spray nozzle blocked.

  • Corrective Action:Clean the nozzle with clean pin.


Symptom3: Irregular Stop When Working
  • Possible cause:The spray nozzle blocked.

  • Corrective Action:Clean the nozzle with clen pin.


Symptom4: Machine Restart Irregularly When Stopped
  • Possible cause A:leaking of water outlet way,like hose ,spray gun etc.

  • Corrective Action A:find the leaking position and repair.

  • Possible cause B:pressure valve broken.

  • Corrective Action B:change the pressure valve.


Symptom5: Hard to Pull the Trigger
  • Possible cause:pressure valve seized up.

  • Corrective Action:change pressure valve.


Symptom6: Machine Can't be Stopped when Shut the Trigger
  • Possible cause:micro switch can not be shut down.

  • Corrective Action:open the case of micro switch watch the its working, if the case broken or out of shape ,change it, if the push rod seized up, change it.


Symptom7: Machine Can Not Start when Pull the Trigger
  • Possible cause:micro switch can not reset.

  • Corrective Action:open the case of micro switch watch the its working, if the case broken or out of shape ,change it, if the push rod seized up, change it, if the micro switch broken ,change it.


Symptom8: The Motor Can Not Running
  • Possible cause A:wrong Circuit connection, like capacitor not connected well.

  • Corrective Action A:open the machine check if the circuit connection is well,inlcude the capacitor.

  • Possible cause B:motor is blocked.

  • Corrective Action B:open the motor shell, check if any parts blocked, repair it.

  • Possible cause C:motor is broken.

  • Corrective Action C:if motor broken, change it.


Symptom9: Motor Burn Down
  • Possible cause A:short circuit.

  • Corrective Action A:change the motor.

  • Possible cause B:motor is blocked.

  • Corrective Action B:motor blocked.

  • Possible cause Ctoo much spark (brush motor).

  • Corrective Action C:change the motor.


Symptom10: Machine Shake Irregularly
  • Possible cause A:one-way valve seized up.

  • Corrective Action A:open the pump ,change the broken one-way valve or pluger.

  • Possible cause B:pluger seized up.

  • Corrective Action B:open the pump ,change the broken one-way valve or pluger.


Symptom11: Water Leaking From Valve Cap
  • Possible cause:seal ring broken.

  • Corrective Action:change seal ring.


Symptom12: Oil Leaking From Drain Hole
  • Possible cause:oil seal broken.

  • Corrective Action:open the pump, and change the oil seal on pluger.