Where is the tell-tale hole located?

Where is the tell-tale hole located?

• A. Top of the pump
• B. Inside the control panel
• C. Under side of the pump
• D. On the opposite end of the valve body

Answer: (C)

A tell-tale hole is placed to reveal leakage from the pump’s packing by giving a visible path for any fluid to escape. It’s located on the underside of the pump so gravity pulls any leakage out and away from the bearings, making it easy to see during routine checks. If you observe fluid at this hole, it indicates the packing is leaking and likely needs maintenance. Placing a tell-tale hole elsewhere—on top, inside the control panel, or on the far end of the valve body—would not provide a reliable, observable drainage path or quick indication of packing wear.

A tell-tale hole is placed to reveal leakage from the pump’s packing by giving a visible path for any fluid to escape. It’s located on the underside of the pump so gravity pulls any leakage out and away from the bearings, making it easy to see during routine checks. If you observe fluid at this hole, it indicates the packing is leaking and likely needs maintenance. Placing a tell-tale hole elsewhere—on top, inside the control panel, or on the far end of the valve body—would not provide a reliable, observable drainage path or quick indication of packing wear.