Red Seal Plumbing Practice Exam

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If the zone valve drive motor fails to operate the plumber must:

  1. Clean the motor

  2. Lubricate the motor

  3. Adjust the settings

  4. Replace the defective motor

The correct answer is: Replace the defective motor

If the zone valve drive motor fails to operate, the best course of action for the plumber is to replace the defective motor. Cleaning, lubricating, or adjusting the settings will not fix a motor that is no longer functioning properly. These options may be useful maintenance steps for a functioning motor, but they will not fix a motor that has already failed. In order to ensure the system operates correctly, it is important to properly diagnose and replace any defective components.

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