Danner Mag-drive 1200

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patdown

Feeder Fish
MFK Member
Jan 15, 2012
25
0
0
Canyon Lake, TX
I received the pump today. After reading the directions about cleaning the impeller periodically, I removed the cover assembly in order to see the impeller in its original condition.

As I removed the cover, the impeller assembly fell apart rather than me taking it apart. Now I am unable to determine in what order the impeller should be assembled.

The impeller assembly has two plastic end caps, a white shaft, the impeller, the magnets, and three washers.



One end cap and the shaft are stuck in the cover. They do not readily pull out of the cover, so I just left them as they are. I can see that the impeller slides onto the magnet section and that this portion will slide on the shaft and the other end cap will slide on the end of the white shaft.



That leaves the three washers. As the assembly fell apart before I had the opportunity to ascertain the exact locations of these washers, I am at a loss on where to place them in the assembly of the impeller.



Could anyone please tell me the correct assembly order so I don't cause any damage.

Thanks.
 
I would try and contact danner. I have a mag drive 12 as well, but I have never taken it apart....
 
I sent Danner an email describing the situation. Haven't heard back yet. Just seeing if some of you guys might know the answer concerning the washers.
 
The impeller should not be coming apart. Hope you didn't break it. The magnetic impeller assembly should come out of the motor in one piece. The end cap and shaft should not be stuck in the cover. I would assume to reassemble it on the shaft end cap, washer, magnet, washer, impeller, washer, end cap. Good luck.
 
I don't think I broke anything. One end cap is stuck in the cover with the shaft inserted in the end cap. I tried to gently pull it apart but it didn't budge so I didn't force it. Pictures of a replacement impeller assembly shows the assembly with a cap on each end.

A washer cannot be placed between the magnet section and the impeller. They are mated in a way that a washer won't go there. That is the washer that I am concerned about. Logically, the washers would go between the end cap and magnet and the other between the end cap and the impeller. That leaves the one washer in question. I've place two washers together at each end and the rotating movement is not hindered. I just haven't electrically actuated the pump because I don't know if I could cause any damage.
 
Just received an email from Danner. They just want a copy of my purchase receipt and they will send me a new impeller. If it really turns out to be this easy, you just can't beat that for customer service.
 
patdown said:
Just received an email from Danner. They just want a copy of my purchase receipt and they will send me a new impeller. If it really turns out to be this easy, you just can't beat that for customer service.
Click to expand...

Agreed. Let us know how it turns out!

Dan
 
I just reread the instructions for this pump. In the FEATURES section, it states that the inlet and outlet ports are 3/4 in NPT threads. Directly below the Flow vs Head Height chart, the following statement appears: "1 1/2 inch diameter is the minimum hose size that should be used for maximum flow."

Does anyone know what this statement means?
 
First off it's nice they're sending you a new impeller, because that one was defective. It's all supposed to be assembled and not taken apart. When you get the new impeller you'll see it's a one piece thing.

They recommend upsizing to 1.5" hose off the pump. If you used 3/4 you'd get way less flow from the smaller hose.

Sent from my DROIDX using MonsterAquariaNetwork App
 
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