Heating, Ventilation, and Air Conditioning (HVAC ) Electrical Practice Test

If contact points on a device become badly pitted, what is an acceptable action?

1. Ignore the issue

2. Clean the contacts

3. Replace the contacts or control

4. Lubricate the contacts

The correct answer is: Replace the contacts or control

When contact points on a device become badly pitted, it indicates a level of deterioration that compromises their effectiveness. This damage is typically caused by excessive arcing or heating and can lead to poor electrical connections, which might further result in reduced performance or failure of the device. Replacing the contacts or the control is the most acceptable action because it ensures that the device operates safely and efficiently. Pitted contacts cannot provide the reliable connection needed for proper operation, and cleaning or lubricating them may not restore their function or longevity adequately. Instead, replacement guarantees that the device will perform correctly and minimizes potential risks of electrical failure or hazards associated with damaged components. Therefore, attending to badly pitted contacts through replacement is essential for maintaining the integrity of the device and the overall HVAC system's functionality.