The Great Bottle Opener Giveaway

Home Brew Forums > Home Brewing Beer > Equipment/Sanitation > March Pump Problems

Reply
 
LinkBack Thread Tools
Old 04-20-2011, 10:30 PM   #1
scoots
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2008
Posts: 109
Likes Given: 1

Default March Pump Problems

I am having a problem with my pump since I changed the input. I was wondering if it was restricting the flow too much to have the pump with this input. The temp probe is on the input side, output on the top.

Can the pump head be rotated around, or does it need to stay in one orientation?

The pump now keeps throwing the breaker in my control panel and was definitely overheating when I was testing the new set up. There was definitely a burning smell coming from the pump.

Thanks,
Scott

cimg0311.jpg  
__________________
scoots is offline
 
Reply With Quote Quick reply to this message
Old 04-20-2011, 10:40 PM   #2
Reelale
Feedback Score: 3 reviews
Recipes 
 
Join Date: Sep 2009
Posts: 17,736
Liked 1373 Times on 1331 Posts
Likes Given: 55

Default

I'm pretty sure the pump head can be rotated. It looks to me like you have 1/2 inlet/outlet with that configuration. It sounds like you might have other problems. Try taking the head off and checking that the motor turns freely. If it does, it might be a stuck impeller.

__________________
Reelale is offline
 
Reply With Quote Quick reply to this message
Old 04-20-2011, 10:40 PM   #3
bruin_ale
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2009
Location: Campbell, CA
Posts: 1,433
Liked 15 Times on 15 Posts

Default

restricting the input can be a cause of cavitation according to the other thread, but I don't know that it would cause tripping breakers and burning up your pump...

Also, yes, you can rotate the head of the pump. Just unscrew the outer screws, rotate the housing, and screw it back in.

bruin_ale is offline
apparatus Likes This 
Reply With Quote Quick reply to this message
Old 04-20-2011, 11:18 PM   #4
Wayne1
HBT_SUPPORTER.png
Feedback Score: 0 reviews
 
Wayne1's Avatar
Recipes 
 
Join Date: Mar 2008
Location: Littleton, Colorado
Posts: 1,047
Liked 63 Times on 42 Posts
Likes Given: 8

Default

Taken from another March pump thread:

"Here are some quotes from the March pump installation manual:

Install the pump as near to the suction source and as low as possible. Suction must be flooded. When using an elbow, valve, etc., the suction must have straight piping in length at least five (5) times the diameter of the pipe.

All suction piping should be direct and short as possible with as little bending as possible. Excessive bending and pump suction length will lead to flow distortion and pump cavitation.


You have elbows directly connected to the suction inlet. According to the instruction manual, you should have at least 2.5" (preferably longer) straight pipe directly before the suction inlet."

Wayne1 is offline
 
Reply With Quote Quick reply to this message
Old 04-21-2011, 12:46 AM   #5
Catt22
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2009
Posts: 4,998
Liked 57 Times on 55 Posts
Likes Given: 51

Default

I very much doubt that the fittings on the intake side are the source of the problem. The breaker tripping and smoke indicates that the motor is not turning for some reason. I would remove the pump head and see if the motor will run normally on its own. If so, then there is a problem with the pump head/impeller assembly. A stuck impeller would be my guess. Make sure the impeller spins freely and that the thrust washer(s) are in place. There's not much to these pumps, so you should be able to repair it easily so long as you did not fry the motor entirely.

__________________
Catt22 is offline
 
Reply With Quote Quick reply to this message
Old 04-21-2011, 02:05 AM   #6
scoots
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2008
Posts: 109
Likes Given: 1

Default

The pump definitely pushes water. I had it running for about 30 seconds before the pump began giving me problems. I was getting about the same amount of flow as I expected before the problem stared. I will take it apart and clean it though.

I do have the pumps as low as possible. Both pumps ended up doing the same thing.

I guess the only other change was a plumbing manifold to direct wort flow. All is made from 1/2" full port with snaplock fittings.

__________________
scoots is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
March Pump 809 HS Problems!?!?!? reddskinnfan Equipment/Sanitation 8 01-24-2011 07:20 PM
March pump problems with hot water dirtyal Equipment/Sanitation 15 10-05-2010 04:28 AM
march pump siphoning problems BucksPA Equipment/Sanitation 7 04-28-2010 04:05 AM
March Pump Problems: Very Bad Brew Day Douglefish Equipment/Sanitation 9 12-27-2009 07:43 PM
March Pump Priming Problems Montanaandy Equipment/Sanitation 2 12-12-2009 03:18 AM