Prime the Pump
4:23
10:42
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At 4:23 in
How To Use a Paint Sprayer.
What happens here
Before powering on, verify that the prime valve is in the 'down' (prime) position. Turn on the sprayer's power switch and hold the prime hose securely in the discard bucket. Allow the sprayer to run until clean paint or protective fluid consistently flows out of the prime hose. This expels any air from the system. Once paint appears, run it for an additional 5-10 seconds to ensure all air is purged. This process is crucial to prevent spitting or an erratic spray pattern during painting.
Goal: Remove all air from the paint sprayer's system.
Tools and materials
- Airless Paint Sprayer Graco 440 — The main equipment for painting
- Discard Bucket — Collecting waste fluid during priming
- Power Switch — Turning the sprayer on/off
- Prime Hose — Expelling air and excess fluid
- Protector Fluid — Initial priming to flush the system before paint
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