NM CID MS-6 Practice Questions - New Mexico CID MS-6 Lawn Sprinklers Examination Exam

When winterizing a potable lawn-sprinkler system with compressed air, the safest field practice is to:

Leave the backflow charged so the relief valve can dump air Pressurize the main with all zone valves closed, then open them Open a zone before applying air and blow zones one at a time within the sprinkler manufacturer’s air-pressure limit Use the highest compressor pressure available so the job finishes in one pass

Correct Answer:

Open a zone before applying air and blow zones one at a time within the sprinkler manufacturer’s air-pressure limit

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