7025 starting backwad

[WarDaddy]

I have a 7025 that routinely starts spinning the wrong way.

It is controlled by a AC3 on a DC4HD.

the pump is on for 60 min and off for 30.

What do I do about it starting backwards?

I have 2 the second does not do this, on the exact same program.

 

[rvitko]

This usually means that the disk or drive unit has worn, how old are these pumps?

 

[WarDaddy]

They are brand new, been in the tank 5 days.

 

[WarDaddy]

Sorry roger, it is a 6025, the small nano stream

 

[rvitko]

OK, that changes things, the usual cause of this on a brand new pump is two things and time will fix both. First you have to understand that backwards is the path of least resistance, the pump starts backwards and this makes the prop fly out of the magnetic field, it hits the front screen and falls back, in doing so it picks up the correct rotation, just like a falling maple seed. When new the fit is tighter and this is also in part because the drive unit sticks to the shaft due to vaseline they use in a factory test. Because of this it doesn't fly forward. I would wipe off the vaseline to the best of your ability and give the pumps 1-2 weeks of continuous running. They should then always start correctly.

 

[WarDaddy]

Sweet, thanks Roger!!!!!

Vaseline in my reef tank, oy...

No biggie, I will clean

 

[rvitko]

Remember, you can eat vaseline, it is quite harmless. When it was invented it was a dietary supplement to help clean the bowels.

 

[WarDaddy]

Roger I have taken the pump apart 3 times and cleaned it. the pump still starts up spinning backwards about 1/3 of the time. My other pump is rock solid, never an issue.

 

[wartskin]

Please send in to us to take a look at, our address is

Tunze USA
305 Victor St
Austin TX 78753

Please include a note with your return shipping information as well.

 

[WarDaddy]

I have given it some time, cleaned it again, still starting backward most of the time.

I will ship it to you today. Thanks guys!