When and how should wash-water temperature and water filters be checked?

• A. Weekly visual check of an external gauge and flow meter.
• B. Daily by visually looking at built-in thermometer and flow meter.
• C. Monthly by sampling water quality with a lab test.
• D. Daily by checking an external thermometer only.

Answer: (B)

Regular daily verification of wash-water temperature and filtration is essential for consistent processor performance and to prevent artifacts from improper washing. The wash bath temperature must stay within the specified range because it affects how effectively the wash cycles remove residual chemicals and debris; deviations can lead to residue or incomplete rinsing. The built-in thermometer provides an immediate, accurate reading, and the flow meter verifies that water is circulating properly through the wash system. Checking these daily catches issues like a failing pump, a partially blocked filter, or a valve problem before they impact image quality.

Weekly checks with an external gauge could miss day-to-day drift and rely on an instrument that may not reflect the actual inner conditions. Monthly lab testing of water quality is not practical for routine daily QC and wouldn’t catch equipment malfunctions promptly. Daily checks using only an external thermometer ignore flow and filtration, risking unnoticed problems with filtration efficiency or water delivery.