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Carefully lower the new pump into the center of the clean pit, ensuring its base is stable and level. Check that the float switch can move up and down freely without hitting the sides of the pit. Now, dry-fit the new plumbing. This includes a short piece of PVC pipe from the pump's adapter up to the new check valve, and another piece from the check valve up to a coupling connecting to the existing pipe you cut earlier. The arrow on the check valve MUST point away from the pump. Once you confirm the fit, disassemble the pieces. Apply purple PVC primer to the outside of the pipe ends and the inside of the fitting sockets. Then, apply a layer of PVC cement over the primer on both surfaces, push the pipe into the fitting with a quarter-turn twist, and hold firmly for 30 seconds to allow the solvent weld to set.

You're viewing a step from: How to Replace a Pedestal Sump Pump

Beginner

30 minutes

2/4 Inventory

This guide provides comprehensive, step-by-step instructions for safely removing an old pedestal sump pump and installing a new one. The process involves disconnecting power, cutting out the old pump, cleaning the sump pit, preparing and installing the new pump with new PVC piping and a check valve, and thoroughly testing the final installation.

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Frequently Asked Questions

What are the most critical safety steps I need to take before starting to replace my pedestal sump pump?

Always disconnect power to the sump pump circuit at your home's breaker panel first to prevent electrical shock. Wear work gloves to protect your hands from potential sharp edges or debris in the sump pit, and use a tarp to contain spills around the work area. Ensure the work area is well-lit and you have clear access to the sump pit.

Do I need to buy all the specific tools and materials listed, like the K2 1/2 HP pump and a dedicated PVC pipe cutter?

While the listed items are recommended for quality and ease, equivalent tools and materials can often be substituted. A dedicated PVC pipe cutter like the Hayes PC2-64 makes clean, straight cuts essential for a leak-free seal, which is critical. Upgrading from a 1/3 HP to a 1/2 HP pump can provide increased pumping power for better flood protection.

How important is cleaning the sump pit, and what's the best way to ensure it's ready for the new pump?

Thoroughly cleaning the sump pit is crucial because accumulated silt, gravel, and debris can clog your new pump's intake and shorten its lifespan. After removing the old pump, use a shop vacuum to remove all remaining water and solids from the bottom of the pit. Ensure the pit is as clean as possible before installing the new pump.

What are the most common installation mistakes beginners make with pedestal sump pumps, especially regarding the piping and check valve?

A common mistake is improperly installing the check valve, which should be placed above the pump to prevent water from flowing back into the pit. Another error is not using Teflon tape on threaded connections or failing to make clean, straight cuts on PVC pipe, leading to leaks. Ensure all connections are secure but not overtightened.