Maintenance / Troubleshooting

General

I am finding traces of powder around the pinch valve. What is causing this?
It is most likely that you have a worn rubber pinch valve. Inspect and replace the valve. Should further powder be found around the pinch valve after replacement, please call Airbrasive® Jet Technologies for assistance.

The powder spraying from my nozzle is losing definition.
Your nozzle is worn. Replace the nozzle.

My clamp will not close properly.
Your clamp is improperly seated. Open your clamp and reseat the chamber.

I have erratic or inconsistent powder flow even though I have continuous air flow from my nozzle.
There are four possible causes to this problem:

  1. Your powder chamber is nearly empty. Refill your chamber. (Note: It is normal to have some residual powder in your powder chamber when refill is required.)
  2. Your powder is contaminated. Discard the contaminated powder and refill your chamber with fresh powder.
  3. Your air supply filter is defective. Repair or replace your filter.
  4. Your powder is not compatible with the nozzle you are using.

I have no air flow at the nozzle even though the unit is “on”, the foot switch is activated and the pressure indicator is showing that the machine is pressurized. What is wrong?
There are three possible causes to this problem.

  1. Your nozzle is clogged. Check your nozzle. Clean and replace if necessary.
  2. Your pinch valve is inoperative. Inspect the pinch valve and replace if necessary.
  3. Your hose is worn. Inspect your nozzle hose. Replace if necessary.

Model 6500

The powder flow control knob is hard to adjust.
Check to see that powder is not leaking into any mechanism. Disassemble and clean powder from parts. Check parts for wear and replace as required.

The door will not open when the unit is turned off and the indicator is RED.
Your powder chamber is not depressurized due to a clogged bleed filter. Disconnect your air supply hose. The unit will bleed through the pinch valve. The door can then be opened and filter can be cleaned or replaced.

The door will not open when unit is turned off and the indicator is BLACK.
Your interlock cylinder is jammed in the lock position. Disconnect the air supply hose. Remove the control panel carefully.  Check the interlock cylinder.Repair or replace if necessary.

With the power switch turned on the indicator light does not turn red.
There are four possible causes to this problem:

  1. Check your air supply. You may not have air coming into your machine.
  2. You have a defective indicator. It must be replaced. This part is under warranty for five years from the date of purchase by Airbrasive® Jet Technologies.
  3. You have a defective on-off switch. It must be replaced. This part is under warranty for five years from the date of purchase by Airbrasive® Jet Technologies.
  4. The hose leading to your indicator is disconnected or defective. Inspect and replace if necessary.

Model K

There are traces of powder at the air pinch valve.
A possible cause of this problem is a ruptured air pinch valve tube. Inspect and replace tube if necessary.

With the powder switch on, the red indicator does not activate.
There are two possible causes of this problem.

  1. Your powder switch is defective. Replace.
  2. You aren’t getting air pressure to the unit. Check your air supply.

The powder spray from the nozzle is not well defined. How do I adjust this?
You are operating with a worn nozzle. Replace the nozzle.

My vibrator is inoperative. What has caused this?
There are two possible causes of this problem.

  1. You have an open rectifier. Inspect and replace if necessary.
  2. You have an open rheostat. Inspect and replace if necessary.
  3. The magnetic coil of the vibrator is burnt out. Replace the vibrator assembly.

Model H

With the system power on/off switch in the “ON” position, the switch does not light up.
There are three possible causes of this problem.

  1. Your back panel fuse may be blown. Replace the fuse.
  2. Your on/off switch may be burned out. Replace the switch.
  3. You are not getting input power to your machine. Check the external input power.

I do not have airflow at the nozzle even though the unit is on, the foot switch is actuated and the pressure gauge is showing pressure.
There are two possible causes of this problem.

  1. Your nozzle tip is clogged.  Clean your nozzle tip.
  2. You may have an inoperative pinch valve solenoid.  Check solenoid operation.  Replace if necessary.

There isn’t any powder flowing from the mixing chamber even though air is flowing through the machine.
Check the orifice plate in the mixing chamber. It is most likely clogged. Remove, disassemble and clean. We also suggest that you inspect your powder supply for moisture contamination which can cause the powder to clump and clog.

Model HME

I am finding traces of powder at the pinch valve.
It is likely that you have a ruptured pinch tube. Inspect and replace.

I have air flow at the nozzle tip when the Continuous Powder Flow/Foot Switch Activated switch is in the foot switch position and foot switch is NOT actuated.
There are two causes of this problem.

  1. You may have a shorted foot switch. Check the foot switch and replace if necessary.
  2. You are losing air supply between the pinch solenoid regulator and the pinch valve solenoid. Remove the hose from the bottom of pinch valve and check for air flow. If there is no air flow, try to adjust the pinch solenoid regulator. If there is air flow, remove and check the pinch valve assembly.

The powder spraying from the nozzle is losing definition.
You have a worn nozzle tip.  Inspect and replace the nozzle tip.