Troubleshooting: Why Your Pool Cleaner is Getting Stuck (and How to Fix It)
My pool cleaner keeps getting stuck up one end. What can I do?
Troubleshooting: Why Your Suction Pool Cleaner is Getting Stuck (and How to Fix It)
A suction pool cleaner that keeps getting stuck in one corner of your pool can be frustrating. Not only does it leave you with an unevenly cleaned pool, but it can also be a sign of a larger issue. At Pool Geeks Brisbane, we've helped countless pool owners get their cleaners back on track. Here's our expert guide to troubleshooting the most common reasons why your suction pool cleaner is getting stuck and what you can do about it.
Understanding Your Cleaner's Drive
Suction cleaners operate using different drive mechanisms, each with its own potential pitfalls.
- Diaphragm: These cleaners use a flexible diaphragm that pulses to create movement. They are often quiet and efficient, but the diaphragm can be easily torn or blocked by small debris.
- Wedge: The drive mechanism in these cleaners uses a wedge-shaped foot that oscillates. They are known for their durability but can get stuck if a large piece of debris jams the wedge.
- Turbine: Turbine cleaners use a rotating turbine to propel themselves. They are generally robust but can be susceptible to blockages if large debris gets caught in the turbine blades.
1. Obstructions and Blockages
This is the most common culprit. A stick, a pool toy, or a build-up of leaves can jam the cleaner's drive or restrict its movement. Start by visually inspecting the cleaner and the area where it's getting stuck. It's also worth checking the skimmer basket and pump basket for any large debris that could be affecting the suction.
For a deeper dive, consider these specific issues:
- Diaphragm cleaners: A small blockage in the diaphragm can cause it to stretch. If not cleared quickly, this can cause the diaphragm to become slightly bloated, preventing it from contracting and expanding effectively. The same issue can occur if a sharp piece of debris pierces the diaphragm.
- Wedge cleaners: These cleaners often get stuck on long pieces of debris, such as palm fronds, that prevent the wedge from moving from side to side. A blockage in one of the two internal tubes or in the vortex head may also cause the cleaner to stop.
- Turbine cleaners: These cleaners are often blocked at the mouth by debris that is larger than the opening. Long debris, such as pine needles, can also wrap itself around the turbine, preventing it from rotating.
2. The Hose Itself
The hose is a critical component for a suction cleaner. It must be flexible to allow the cleaner to move freely around the pool. We often see cleaners connected with a more rigid manual vacuum hose, which can hinder movement.
The hose length is also critical for a suction cleaner's performance. If the hose is too long, it can create coils that snag on steps or in corners. If it's too short, the cleaner won't have enough reach to cover the entire pool. Ensure the hose is just long enough to reach the furthest point of your pool from the skimmer box, plus one extra length.
Additionally, proper hose storage is key. If a flexible hose is removed from the pool and left wound up or tangled in the sun, the heat can cause the hose to soften and then harden in that misshapen form. When returned to the water, it will retain that rigid, tangled shape, preventing the cleaner from operating correctly.
3. The Suction Power
The suction power from your pump needs to be just right. If the suction is too strong, the cleaner can get "stuck" to the pool floor, especially on a vinyl liner. This can be caused by the cleaner not being able to release its grip on the pool surface. If the suction is too weak, it may not have enough power to climb walls or navigate corners.
Weak suction can be caused by a number of issues, from simple to complex.
- Blockages: A dirty/blocked filter, a full pump basket, or debris in the skimmer basket or cleaner hose can all reduce suction. A simple check and clear can often resolve this.
- Air Leaks: A leak in the suction line can also cause issues. This could be a small hole in the cleaner hose, which is easily remedied with a new hose section or a new hose entirely. It could also be a more concerning air leak in the plumbing between the skimmer box and the pump. This is usually visible as a steady stream of air bubbles entering the pump from the suction line, which are also visible at the pool return jets. This is different from cavitation, which also causes air bubbles in the pump but these are formed from extreme turbulence in the suction and usually don't make it back to the pool returns. If you suspect an air leak, the first points to check are the O-rings in the pump front union and the pump lid. If there are any valves on the suction line, these should also be checked for a secure seal. If that doesn't resolve the issue, there may be a crack in the suction line that requires a professional leak detector to diagnose.
4. Wear and Tear
Like any piece of equipment, a pool cleaner can wear down over time. These worn parts are the most common reason a cleaner will stop moving effectively.
- Swivel Head: All suction cleaners have a swivel head at or near the hose connection point. This allows the cleaner to swivel freely without twisting up the hose. If this swivel is not moving freely, the hose will end up getting twisted, which can stop the cleaner from moving around the pool.
- Seal Mat (Disc/Skirt): Diaphragm and wedge cleaners use a seal mat to scrub the pool floor and create a seal that keeps the cleaner seated on the pool surfaces. If this is worn out, the cleaner may not maintain a grip on the surface, reducing its movement or causing it to get stuck in corners.
- Foot/Sole: Both diaphragm and wedge cleaners have a foot or sole that wears out as the cleaner moves over the pool surfaces. This part protects the cleaner itself from wearing out. When the foot starts to become too smooth, the cleaner will struggle to move around as easily.
- Diaphragm Cleaners: The diaphragm is the most common part to wear out. This is noticeable by reduced or increased pulsing accompanied by a reduction in movement. The cassette chamber can also wear out or break and has a similar effect.
- Wedge Cleaners: In a wedge-style cleaner, the baffle plate will often wear out and get sucked into the drive, preventing it from flicking from side to side.
- Turbine Cleaners: These cleaners have more wearing parts, starting with the tracks or tyres, moving through the turbines, and into the gears. Even the housings around the gears and turbines will wear out through abrasion and need to be replaced when the gaps get too large.
What's the Verdict?
If you've gone through these steps and your pool cleaner is still playing up, don't worry. The Pool Geeks Brisbane team are experts in all things pool maintenance and we're here to help. Whether you need a quick repair, a service, or some advice on a replacement cleaner that's perfect for your pool, give us a call. We'll get your pool sparkling clean again in no time.
