This article will show you how to check and clean the skimmer pump impeller. Over period of time, depend on the amount of usage / calcium dosing. The ceramic shaft will bond / stuck into the impeller magnetic housing, this prevent the impeller from spinning correctly. If you hold the both end of the impeller with the thumb / index finger and try to spin the impeller, it should spin freely. If the impeller not spinning or you have to put lot of force into making it spin. The impeller / shaft needs cleaning.
The white shaft should easily be remove from the magnetic housing as well.
Please watch the below YouTube videos to better understand
When the impeller is stuck into the magnetic housing, you can try to push the impeller out by putting one end on a hard flat object and push it. You might have to repeat the this steps a few times. Vinegar bath the whole impeller should also helped. Once you removed the shaft from the impeller, you can feel and see residue / calcium powder. You can use sand paper to sand it down or a brush to remove the residue. You want to clean off as much residue on the shaft and inside the magnetic housing as possible.
Once you done cleaning it, place the shaft back into the magnetic housing, you should feel there is no resistance and the shaft should be loose coming in and out of the impeller. Now try to hold both ends of the shaft and try to spin the magnetic impeller with your finger, the impeller should spin freely.
We suggest that you do this type of cleaning every 4-6 months, this would help extend the life of the impeller and the motor housing.
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There are so many dc pumps out there and all the impellers are pretty much the same or similar to each other. The most important part of keeping it clean and running without any issue is making sure the bearing is not stuck to the ceramic shaft and the calcium build up right behind the propeller.
Once you remove the impeller from the pump motor, please inspect the bearing inside the motor housing, make sure its there and if possible remove it. Place it to the impeller shaft, spin it or move it in and out making sure its loose. If its fit tight or you have to put some pressure or force into the movement. You need to clean the shaft and bearing. They should be loose and move freely.
Over time, the calcium also build up in the ceramic area right behind the propeller and in front of the magnet. right between the hole of the black plate.
Please follow the pictures instruction to identify the area and how to clean it.
To change out the control board, please follow the below steps.
– 1 open the lid
– remove all 4 screws, at each corner of the feeder
– lay the unit on it side
– side the top portion out
– disconnect the 2 quick connections, please make note of which connector below to which one, this way no mistake when you plug them back.
– discounnect the connections at the control board
– remove 2 nuts from the controller board using plyer
– install the new board and connect everything back to where it belongs
– slide the top back and put the screws back
Please follow the below pictures
Please carefully remove the dosing head by pressing down on both tabs on the side of the dosing head.
Aquarium Volume: 80-400L
FLow Rate: 600-2000L/HR
Aquarium Volume: 100-600L
FLow Rate: 1000-2500L/HR
Aquarium Volume: 120-600L
FLow Rate: 1000-3000L/HR