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Does Your Grinder Pump Need a Repair? Telltale Signs of Failing Grinder Pumps

Your property’s grinder pump may be more essential to your building’s plumbing system than you know. If you recently bought a property or came on as manager, you may not even be familiar with grinder pumps. Here’s a quick intro to this handy device, as well as a list of signs of grinder pump failure, so you can prevent a disaster with your property’s waste removal.

What Is A Grinder Pump?

Sewage ejection for low-lying drains

Also known as a sewage ejector pump, a grinder pump is a must if your property’s drainage system is lower than the sewer main, septic tank, or drainfield. Low-lying drainage occurs frequently on the bottom floors of single-family homes, apartment buildings, and commercial properties.

This specialized sump pump grinds waste from sinks and bathrooms, so the resulting slurry can be propelled from the property when gravity alone can’t do the job. Grinder pumps are made up of a waste collection basin, a grinder similar to that of a garbage disposal, and a motorized pump. A simple flotation device triggers a full basin to start the grinding and emptying process. The pump may be located inside or just outside the property.

What Are Common Signs of Grinder Pump Failure?

Waste not being removed

If waste is not being removed from sinks and toilets, it’s an obvious sign the grinder pump is failing. You may have a pump alarm on your model that sounds when the basin is full but not emptying. Even if most of the waste is being ejected but small particles remain, you may notice unpleasant sewage or kitchen waste smells.

To see if odors are caused by pump failure or simply leaks in the system, take a look at the vent hole, which is necessary for proper function of the pump. Any blockages should be cleared. Also, check for poor seals around the vent or pump basin. Over time, O rings and gaskets can harden and crack, which means it’s time for them to be replaced.

Other causes for inadequate waste removal include:

• Pump too small for demand placed on it
• Improper installation (slightly tipped in the cavity)
• Insufficient drain pipe diameter
• Clog in drain pipe
• Malfunctioning pump motor (needs professional attention)
• Corrosion or scale buildup on any parts
• Dirty or clogged pump impeller (the fan-like part of the pump that propels water)
• Oil change needed (some pump models have a gauge)

Clogs and damage to the grinder pump can result from users trying to flush or dispose of items that shouldn’t go in the sink or toilet. Tenants must be reminded not to put feminine hygiene products, cat litter, grease, food scraps, and similar waste into the system.

Pump won’t start or runs intermittently

Sometimes a grinder pump that won’t start or that starts and stops too soon is due to the issues discussed above. Another common reason for this problem is a poor electrical connection or broken switch. Evaluate the wiring and all connections carefully to make sure there isn’t a loss of power.

If the circuit breaker has tripped, reset it. If the pump runs normally after that, there’s likely no problem. However, if the breaker trips repeatedly, the wiring and panel must be examined by a licensed electrician to rule out things like a short circuit or inadequate amperage for the device.

Pump runs continuously

A pump that won’t shut off can be noisy and a waste of energy. It can also put unnecessary wear and tear on the pump over time. This warning sign can sometimes be caused by a pump that’s trying to keep up with too much demand or malfunctions that don’t completely eject all waste, as described above. More frequently, though, the float valve or sensor is broken or stuck, making the pump “think” the basin is full when it’s not. See if it helps to loosen or free the flotation valve that triggers action.

Noisy pump

A grinder pump that makes odd or excessive noise is a nuisance to users and their neighbors. Sometimes this can be fixed on your own. First check the pump brackets to make sure the pump is mounted and held in place properly, and tighten anything loose. Next, make sure any drain pipe fasteners haven’t come undone, and repair or replace them as needed.

If your pump is still making noise once you’ve checked these things, it needs to be serviced by a professional. Something may be broken in the pump’s interior compartment, parts may need lubrication, or bearings may need to be replaced.

We recommend performing an annual check on your grinder pump to catch small problems before they become big expensive ones. In some cases, we also encourage property owners to install an auxiliary pump, so if one breaks or needs service, there are no issues with waste removal.

Whether you need routine help with your grinder pump or have noticed some of the signs of grinder pump failure, Antler Pumps is here to serve you. Call us at 212-534-2500 or use our easy online form to schedule an appointment. Don’t wait until your grinder pump completely fails to get in touch. Reach out today.