During the compressed air sprayer calibration, what should be done with the wand after spraying the defined area?

• A. Drain the wand back into the tank
• B. Cap the wand and leave it
• C. Empty the tank
• D. Return the wand to its storage case

Answer: (A)

After finishing a compressed air sprayer calibration, the goal is to recover any remaining spray in the wand so nothing drips or is wasted. Draining the wand back into the tank returns that leftover liquid to the reservoir, helps maintain the correct mixture for future use, and reduces the chance of accidental discharge or drips when you disconnect or store the equipment. Leaving the wand capped, or putting it away without draining, can trap liquid or cause leaks later, and emptying the tank would waste product and disrupt the setup. Returning the wand to the tank is the practical step to finish the calibration cleanly and safely.