Follow this airless spray setup procedure to properly setup your airless paint spray machine prior to each use and a lot of time can be saved by identifying any problems before the spray unit is filled with paint. Alway consult your airless spray manufacturer owners operation manual to ensure no additional steps or procedures are required and to correctly identify your airless spray components locations.
Airless Spray Setup
- Unless already connected attach airless hose to sprayer and tighten firmly
- Connect other end of airless spray hose to gun and also tighten firmly
- Remove airless spray tip guard from spray gun and engage spray gun trigger safety lock
- Check airless pump inlet strainer is fitted and undamaged and free of dried paint and debris
- Fill the airless pump packing nut area with throat seal liquid if using a piston pump to prevent pump packing wear
- Ensure the motor is switched off if electric and then plug into an earthed electrical outlet
- Check crankcase oil level and fill tank with fuel if using a gas powered sprayer and earth the airless pump with the attached grounding cable
- Ensure the pneumatic air motor is lubricated if using this design of airless pump and that the pump us grounded with the attached grounding cable.
- Ensure the prime valve or bypass valve is open fully
- Ensure the pressure control is set to the lowest, minimum, setting
- Place airless pump suction siphon assembly into a metal container and partially fill with flushing fluid to just cover the pump intake
- Turn the motor on or open the compressed air supply with the regulator set to the lowest possible point
- Slowly increase pressure setting only until the pump just begins to cycle
- Allow airless pump to continue running until a continuous flow of flushing solvent is returning via the bypass tube back to the metal container
- Disengage the airless spray gun trigger safety lock and place the spray gun firmly against the inside of the metal container, ensure the bypass valve is still open and then pull the trigger on the spray gun while still pressing it against the metal container.
- The airless spray hose should slowly fill with the flushing solvent and begin to flow from the spray gun as well. If not ensure the pressure setting is at minimum and close the bypass valve while still holding the spray gun open without spray tip fitted and remain ready to open the bypass valve instantly if fluid begins to exit the spry gun with too much velocity.
- Allow fluid to flow via the spray gun until any air in the system is cleared. Air will hiss as is escapes the spray gun.
- Close the spray gun trigger and hang on the side of the metal container with the gun inside the container.
- Ensure the pressure control is at minimum setting and then close the prime spray bypass valve
- Slowly increase pump pressure watching for any leaks anywhere. If a leak does appear do not place any part of the body near the leak. Shut the airless sprayer off, release all pressure by opening the bypass valve and rectify the leak then retest this step.
- When pressure test with flushing solvent is successful with no leaks return pressure setting to minimum and then open bypass valve fully to relieve all pressure and shut off motor.
- Next place the airless sprayer paint pick up in a grounded container with the paint to be sprayed
- While holding the trigger of the airless spray gun on and with the spray gun pressed against a grounded empty flush container, ensure the pump pressure setting is at minimum and the prime valve is closed and then with the trigger still pulled open, start the motor and increase pressure setting until the pump just begins to cycle.
- Allow pump to run until paint starts to flow from the airless spray gun and then release trigger, engage spray gun safety, stop the motor and then open the bypass valve to relive any pressure
- Fit the spray tip to the airless spray gun firmly, close the bypass valve on the pump and turn the pump motor on then increase pressure minimally and wait for pump to stall
- Hold the spray gun well away from face and body and test spray into an empty container to ensure the spray tip has been fitted correctly