Press the Gas Pedal: Press and hold the gas pedal for about 10 seconds. This activates the electric water pump's self-bleeding mode. Wait: The water pump will run for about 12 minutes, circulating coolant and expelling air. After this, follow the standard steps to check coolant levels and for leaks.
You run your pump at 100% and tilt the case in all directions. Then you leave one of the caps open on the resevoir to let the air escape. That's it.
Bait the Pump with Water
Take a container filled with water and connect the suction hose directly to the container. Turn on the pump and let the water run for a few minutes. This process will help remove air from the pump system and replace it with water.
On installation a domestic water pump needs to be manually primed. So, you need to bleed all the air that is inside the pump housing and suction line and displace it with water. Priming the pump also helps to lubricate your mechanical seal.
Run your engine and burp the coolant
Turn on your car's engine and set the A/C to its hottest setting. This will allow the coolant to cycle through the engine and entire cooling system while bringing any trapped air to the top. Any air in your system should bubble up and 'burp' out of the funnel.
Symptoms of a Failing Water Pump
Overheating is an obvious symptom of a failing water pump. Drivers should make sure the needle on the engine temperature gauge doesn't go into the red. A warning light should also illuminate to tell the driver the coolant is getting too hot.
If you don't bleed the coolant to remove air pockets, the coolant may boil and you may experience overheating issues. If you bleed the coolant system, the problem goes away, and then you need to bleed the coolant system again in the near future, it's a sign you've got a leak somewhere.
Open a hose spigot or the sample tap to drain the tank. Apply a small amount of psi with an air compressor to the snifter valve to completely evacuate the pressure tank of all water. Turn off the hose spigot/sample tap and add the proper amount of air into the tank Your system has now been re-pressurized.
Entrained air or gas/vapor can have a detrimental effect on the suction performance of a pump. Air or gas will expand in the inlet of the impeller, which blocks the liquid flow through the impeller, much like the blockage from cavitation vapor bubbles, both of which cause a decay in the pump discharge pressure.
Turn On The Pump and Slowly Open The Valve
You should see bubbles discharging from the returns as air is forced out of the line into the pool water. After a while, the pump should catch up and fill up with water.
- Cavitation: Occurs when the pump can't fill the impeller with liquid, causing air bubbles to form. This can lead to vibrations, noise, and damage to the pump's internal components over time. - Overheating: Trapped air reduces the pump's ability to cool itself, potentially causing overheating and further damage.
If you don't prime your pump, you risk mechanical seal failure, and further damage to other necessary pump components. Without proper priming, your water pump's motor will still run, but you'll notice low water pressure, or no fluid delivery at all.
In comparison to a standard centrifugal pump, what's notable in the design of a self-priming centrifugal pump is that it features a liquid reservoir built into the body of the pump, typically either above or in front of the impeller.
Regular bleeding: Air can build up in the system over time, especially if your system has recently been filled or drained. Regularly bleeding the pump ensures optimal circulation.
Will a cooling system bleed itself? Your coolant system can bleed some between the overflow tank and thermostat. However, to properly bleed, you need to fill the coolant and run the car with the radiator cap off.
Water pumps are essential for various applications, but they can also experience common problems affecting their performance and reliability. Common problems include overheating, leakage, low water pressure, noisy operation, and cavitation.
The lifetime of a water pump depends on type and model. On average, you should expect +10 years. You should also be aware of other parameters such as level of comfort provided by the pump, how sustainable, reliable and safe it is - and not least if it will enable you to save energy, water and money during the lifetime.