Annual maintenance of equipment commonly involves what action?

• A. Visual inspection of control panel
• B. Recalibration
• C. Cleaning of vents
• D. Update firmware

Answer: (B)

Maintenance aims to keep output within design specifications and ensure safety. Over time, components can drift due to wear, temperature changes, and aging, which affects measurement accuracy and the delivered therapy parameters. Recalibration restores readings to known reference standards, verifies that sensors and output measures align with those standards, and documents traceability. This directly preserves device performance and safety for each use. Visual inspection checks for obvious signs of trouble but doesn’t correct drift. Cleaning vents helps with cooling but doesn’t address accuracy. Firmware updates may be part of upkeep in some devices, but they’re not universally required annually and don’t guarantee the device’s performance in the way recalibration does.