Storing impellers - SailNet Community
 3Likes
Reply
 
LinkBack Thread Tools
post #1 of 33 Old 05-08-2012 Thread Starter
Senior Member
 
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 11,226
Thanks: 46
Thanked 237 Times in 222 Posts
Rep Power: 7
   
Storing impellers

I just chewed up a brand new impeller that I installed two weeks ago and ran for a total of an hour. Every single blade broke, although, much of that could have happened post failure, due to the heat that built in the pump. We were motoring out, noticed excessive exhaust smoke and shut down. I have a pic, but not on this iPad.

I did have some yard work done between the one run I made and this failure. They changed fuel filters for me and, since I always close the raw water seacock, I wondered if they ran her dry when they bled the system.

Of course, they deny it, as I expected. I will never know for sure.

The only remaining potential is that the impeller dried out. It was on a shelf in the engine compartment for about 9 months. I always keep a spare aboard and use it to commission in the spring and buy another spare. Not much use as a spare, if it fails in an hour.

I've heard of people keeping their impellers packed in glycerin or oil. I never have.

How do you store yours?


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Jeanneau 54DS

In the harsh marine environment, something is always in need of repair. Margaritas fix everything.
Minnewaska is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 33 Old 05-08-2012
Senior Member
 
johnnyquest37's Avatar
 
Join Date: Feb 2012
Location: Houston, TX
Posts: 396
Thanks: 1
Thanked 6 Times in 6 Posts
Rep Power: 4
 
Re: Storing impellers

When I take mine out for the winter, I coat it with petroleum jelly. Never thought to do this to a new impellor being saved as a spare.

[/B]S/V Wind Orchid
Catalina 350 (hull# 273)
Annapolis, MD

LET'S GET SERIOUS ABOUT REMOVING POLITCAL TAG LINES -- NOW!
johnnyquest37 is offline  
Quote Quick Reply Share with Facebook
post #3 of 33 Old 05-08-2012
Chastened
 
BubbleheadMd's Avatar
 
Join Date: Nov 2009
Location: Edgewater/Annapolis
Posts: 3,378
Thanks: 2
Thanked 82 Times in 77 Posts
Rep Power: 6
 
Send a message via Yahoo to BubbleheadMd
Re: Storing impellers

Petroleum products can attack the rubber. If you want to store it in something, use olive oil or silicone grease.

S/V Old Shoes
1973 Pearson 30 #255
BubbleheadMd is offline  
Quote Quick Reply Share with Facebook
post #4 of 33 Old 05-08-2012
Hmmm
 
Bilgewater's Avatar
 
Join Date: Jul 2008
Location: Campbell River, British Columbia
Posts: 514
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 8
 
Re: Storing impellers

Don't know about storage, I just store mine as it comes and they always seem to work fine. I would guess the overheat buzzer would have gone off for the mechanics. Although I was talking to someone at my boat yesterday meanwhile his was overheating and buzzing away and it was directly in front of mine and neither of us heard it...so you never know.

Anyway, I made a large laminated tag that I snap to the ignition key that says open seacock. I snap it on whenever I close the valve for whatever reason. It's mainly for myself but it also serves for purposes such as this. Just a thought.
casey1999 likes this.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Impulse III
Truant Pilothouse
Bilgewater is offline  
Quote Quick Reply Share with Facebook
post #5 of 33 Old 05-08-2012
Just another Moderator
 
Faster's Avatar
 
Join Date: Sep 2005
Location: New Westminster, BC
Posts: 16,541
Thanks: 105
Thanked 314 Times in 301 Posts
Rep Power: 10
     
Re: Storing impellers

You also have to wonder how long that impeller has been 'on the shelf' at the vendor. I do suspect that these bits can 'dry out' in time and become somewhat more brittle than they were when new. I think the same applies to other rubber parts like heat exchanger boots etc.

Ron

1984 Fast/Nicholson 345 "FastForward"

".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)
Faster is offline  
Quote Quick Reply Share with Facebook
post #6 of 33 Old 05-08-2012
Senior Member
 
bjung's Avatar
 
Join Date: Apr 2009
Location: Blue Ridge
Posts: 473
Thanks: 5
Thanked 0 Times in 0 Posts
Rep Power: 7
 
Re: Storing impellers

I had the same results with an impeller, luckily all rubber parts ended up before the heat exchanger. I suggest using either glycerin or talcum powder for spare storage, and/or vacuumpack individually.
I also had the same problems with belts. I went through two belts in one day, that were stored on board for over a year. They both delaminated.
bjung is offline  
Quote Quick Reply Share with Facebook
post #7 of 33 Old 05-08-2012
Old as Dirt!
 
svHyLyte's Avatar
 
Join Date: Nov 2008
Location: Tampa Bay Area
Posts: 2,937
Thanks: 15
Thanked 130 Times in 123 Posts
Rep Power: 7
 
Re: Storing impellers

Quote:
Originally Posted by Minnewaska View Post
I just chewed up a brand new impeller that I installed two weeks ago and ran for a total of an hour. Every single blade broke, although, much of that could have happened post failure, due to the heat that built in the pump. We were motoring out, noticed excessive exhaust smoke and shut down. I have a pic, but not on this iPad.

I did have some yard work done between the one run I made and this failure. They changed fuel filters for me and, since I always close the raw water seacock, I wondered if they ran her dry when they bled the system.

Of course, they deny it, as I expected. I will never know for sure.

The only remaining potential is that the impeller dried out. It was on a shelf in the engine compartment for about 9 months. I always keep a spare aboard and use it to commission in the spring and buy another spare. Not much use as a spare, if it fails in an hour.

I've heard of people keeping their impellers packed in glycerin or oil. I never have.

How do you store yours?
We keep two spares (not in the engine compartment which get too hot!). I wipe our newly purchased spare down with the glycerin tab that comes with the impeller, wrap it in wax paper and vacuum seal it in a plastic pouch with our FoodSaver and put the date on the pouch with a marker. We replace the impeller at 100 hour intervals, or one year, whichever comes first, with the oldest spare and buy a new one. Never had a failure.

As others have noted, do not use a petroleum based lube.

FWIW...

"It is not so much for its beauty that the sea makes a claim upon men's hearts, as for that subtle something, that quality of air, that emanation from the waves, that so wonderfully renews a weary spirit."
svHyLyte is offline  
Quote Quick Reply Share with Facebook
post #8 of 33 Old 05-08-2012 Thread Starter
Senior Member
 
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 11,226
Thanks: 46
Thanked 237 Times in 222 Posts
Rep Power: 7
   
Re: Storing impellers

I practice the rotating inventory method exactly and replace the impeller at least annually. Always during Spring commissioning and again if hours suggest. The only other I've ever had fail was many many years ago, when I was less diligent. I've never had a brand new one fail, although, I have heard of it happening.

I am also suspect of the age of the impeller when I received it. How would one know.

I would rather not use the included glycerin pack for storage, as I would like to use it when it comes time to install. I particularly like to squeeze it right between the blades, after its been installed, to insure a seal for priming.

Spray with silicon spray maybe?


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Jeanneau 54DS

In the harsh marine environment, something is always in need of repair. Margaritas fix everything.
Minnewaska is offline  
Quote Quick Reply Share with Facebook
post #9 of 33 Old 05-08-2012
Junior Member
 
Join Date: Dec 2010
Posts: 13
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 0
 
Re: Storing impellers

EVOO works great.
GrumpyPawPaw is offline  
Quote Quick Reply Share with Facebook
post #10 of 33 Old 05-08-2012 Thread Starter
Senior Member
 
Join Date: Feb 2010
Location: Narragansett Bay
Posts: 11,226
Thanks: 46
Thanked 237 Times in 222 Posts
Rep Power: 7
   
Re: Storing impellers

Quote:
Originally Posted by GrumpyPawPaw View Post
EVOO works great.
I've heard of the idea. Sounds pretty weird and worry that the food oil goes rancid.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Jeanneau 54DS

In the harsh marine environment, something is always in need of repair. Margaritas fix everything.
Minnewaska is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Storing mozzarella in oil wind_magic Provisioning 10 06-16-2010 11:07 PM
Heads Up w/Impellers on Yanmar DrB Gear & Maintenance 31 10-16-2008 06:03 PM
Places to buy spare impellers? labatt Gear & Maintenance 17 04-25-2007 11:38 PM
Globe Impellers Warren M. Gear & Maintenance 3 08-15-2006 10:21 AM
Storing foods fujimoTammy Provisioning 12 07-06-2006 07:19 AM

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome