OPERATION
4.4
PREPARING TO SPRAY
Before painting, it is important to make sure that
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the fluid in the system is compatible with the
paint that is going to be used.
Incompatible fluids and paint may cause the
valves to become stuck closed, which would
require disassembly and cleaning of the sprayer's
fluid section.
Always keep the trigger lock on the spray gun in
the locked position while preparing the system.
1. Place the siphon tube into a container of the appropriate
solvent. Examples of the appropriate solvent are water for
latex paint or mineral spirits for oil-based paints.
2. Place the return hose into a metal waste container.
3. Set the pressure to minimum by turning the pressure
control knob to the "MIN" setting.
4. Move the PRIME/SPRAY valve down to the PRIME position.
Hold the return hose in the waste container
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when moving the PRIME/SPRAY valve to PRIME
in case the sprayer is pressurized.
5. Turn on the sprayer by moving the ON/OFF switch to the
ON position.
6. Allow the sprayer to run for 15–30 seconds to flush the old
solvent out through the return hose and into the metal
waste container.
7. Turn off the sprayer by moving the ON/OFF switch to the
OFF position.
Make sure that the spray gun does not have a tip
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or tip guard installed.
8. Move the PRIME/SPRAY valve up to the SPRAY position.
9. Turn on the sprayer.
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10. Unlock the gun by pushing the gun trigger lock to the
unlocked position.
Ground the gun by holding it against the edge of
the metal container while flushing. Failure to do
so may lead to a static electric discharge, which
may cause a fire.
11. Trigger the gun into the metal waste container until the
old solvent is gone and fresh solvent is coming out of the
gun.
12. Lock the gun by pushing the gun trigger lock to the locked
position.
13. Set down the gun and increase the pressure by turning the
pressure control knob slowly clockwise.
14. Check the entire system for leaks. If leaks occur, follow
the "Pressure Relief Procedure" in this manual before
tightening any fittings or hoses.
15. Follow the "Pressure Relief Procedure" in this manual
before changing from solvent to paint.
Be sure to follow the Pressure Relief Procedure
when shutting down the sprayer for any purpose,
including servicing or adjusting any part of the
spray system, changing or cleaning spray tips, or
preparing for cleanup.
IMPACT 1640