Troubleshooting
Problem
The unit will not run.
The unit will not prime.
The unit will not build or maintain pressure.
Fluid leakage at the upper end of the fluid section.
Poor spray pattern.
The unit lacks power.
Blown fuses at the pump.
Cause
1.Blown panel fuse or tripped breaker.
2.The unit is not plugged in.
3.The pressure control knob is set too low.
4.Faulty or loose wiring.
5.Worn motor brushes.
6.Faulty on/off switch fuse.
1.The piston packings are dried out.
2.The pump inlet screen is plugged.
3.There is air in the pump or hose.
4.The packings are worn.
5.The fluid is too viscous.
6.The suction tube is clogged.
7.The suction tube has an air leak.
1.The pressure adjusting knob is not properly set.
2.The pump intake screen is dirty.
3.The PRIME/SPRAY valve balls or seals are worn or dirty.
4.There is air in the pump or hose.
5.The packings are worn.
6.The spray tip is worn.
7.There is internal leakage.
8.There is a fluid leak.
9.The fluid is too viscous.
10.The spray tip is too large.
1.The upper packings are worn.
2.The piston rod is worn.
1.The spray tip is too large for the material being used.
2.The pressure adjustment is wrong.
3.Insufficient fluid delivery.
4.The fluid is too viscous.
1.The pressure adjustment is too low.
2.Improper voltage supply.
1.There is excessive pressure.
2.A circuit breaker has tripped.
3.The gear box, linkage, or motor has failed.
Solution
1.Check and replace or reset.
2.Plug the unit in.
3.Turn the knob clockwise to increase the pressure.
4.Inspect and take to a SprayTECH authorized service center.
5.Take to a SprayTECH authorized service center.
6.Take to a SprayTECH authorized service center.
1.Remove the suction tube and feel the lower ball check to be sure it is free to move off its seat. Place a full cup of paint thinner over the end of the fluid section and turn the pump on.
2.Remove the screen and clean.
3.Trigger the gun and run the unit for about 10 seconds until air is purged.
4.Replace the packings.
5.Prime the pump with a solvent appropriate to the material being used. Carefully remove the pump from the solvent container and immerse the suction tube in heavy material to be sprayed. With the nozzle tip removed, trigger the gun until the heavy material appears at the gun. Replace the nozzle tip.
6.Remove the suction tube and clean.
7.Check the connection and seal.
1.Turn the pressure control knob clockwise to increase the pressure.
2.Remove and clean the intake screen.
3.Replace or clean.
4.Trigger the gun and run the unit for about 10 seconds until the air is purged.
5.Replace the packings.
6.Replace the spray tip following the instructions that came with your gun.
7.With the gun trigger closed, allow the unit to pump up to pressure and shut off. If the pump momentarily starts, internal leakage is indicated and fluid section repacking or valve replacement is necessary.
8.Check for external leaks including hydraulic fittings attached to the pressure control housing.
9.Consult the manufacturer's recommendations on the material container.
10.Replace the spray tip following the instructions that came with your gun.
1.Relieve the pressure or replace the packings.
2.Replace the piston rod.
1.Change to a smaller tip.
2.Adjust the pressure control knob.
3.Clean all screens and filters.
4.Add solvent according to the manufacturer's recommendations.
1.Increase the pressure.
2.Reconnect the input voltage for 120V AC.
1.Take to a SprayTECH authorized service center.
2.Take to a SprayTECH authorized service center.
3.Repair or replace the malfunctioning parts.
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