For your pump to function properly, the integrity of the pump seal must not be jeopardized. If you notice any warning signs that there is something wrong with the pump seal, you will need to replace it.
Identifying Warning Signs Of A Defective Pump Seal
You may notice water drips and sprays coming from the pump while it is in operation. Your pool may gradually have less water in it. A puddle might form near the pump. Sometimes, the motor will become very hot and will shut itself off to avoid overheating. There might also be bubbles forming in the pool. These signs indicate that you need to replace the seal.
Disassembling The Pump
Before you begin disassembling the pump, disconnect the motor from the power source to reduce the risk of an electric shock of an injury caused by moving parts. Detach the pump housing by removing the nuts and bolts that hold the housing to the motor. Sometimes, there is a clamp or handle knob instead. You will find an impeller cover underneath that must be removed. Remove the screws that hold the impeller cover in place.
Removing The Impeller
Make sure that the impeller isn't damaged. Damaged impellers have melted edges or have pock-marked impeller fins. If damaged, the impeller will need to be replaced. Either way, remove the impeller so you can access the seal by rotating it counter-clockwise. Use a screwdriver to prevent the shaft from turning with the impeller.
Removing The Seal Plate
Undo the seal plate located near the impeller. Locate four bolts and unscrew them from the seal plate. This will allow you to access the pump seal assembly. The assembly is usually very fragile, so be careful when removing it.
Replacing The Seal
The location where the new seal will be placed will likely be messy, so wipe it clean with a rag. The seal spring might be damaged and may need to be replaced as well. When adding the new seal, make sure to not allow any contaminants to accumulate on the seal. Then, reattach the seal plate, put the impeller cover back in place, screw the impeller cover in place, put the pump housing in place and screw the housing in place. Afterward, run the pump to determine if the problems that helped you identify the defective pump seal have been remedied. For assistance, talk to a professional like Midway Electric Inc.