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SESK: Stuff Everyone Should Know · sesk.info/epa-excessive-purging-sign

On a low-pressure chiller, excessive purging is a sign of what?

Leakage into the system.

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  1. An overcharge of oil
  2. A plugged condenser
  3. Leakage into the system ✔

Why: EPA's Type III leak detection topics list excessive purging as a sign of leakage into a low-pressure system. If the purge unit runs a lot, look for a leak.

Huh, didn't know that: Type III topics also include the maximum leak test pressure for low-pressure centrifugal chillers.

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References

Answer: Leakage into the system. EPA's Type III leak detection topics list excessive purging as a sign of leakage into a low-pressure system. If the purge unit runs a lot, look for a leak.

  1. EPA Section 608 Technician Certification Test Topics www.epa.gov/section608/test-topics
    Signs of leakage into a low-pressure system (e.g., excessive purging)
    Checked 2026-10-10.
  2. EPA Section 608 Technician Certification Test Topics www.epa.gov/section608/test-topics
    Maximum leak test pressure for low-pressure centrifugal chillers
    Checked 2026-10-10.

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