Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 08-02-2017, 06:09   #1
Registered User

Join Date: Nov 2015
Posts: 19
Want to re-use watermaker after 5 years idle

Hello all,

My boat came with an SLCE Aquabase ETW-301 watermaker.
Unfortunately, the previous owner did not use the gear for about 5 years.
I am not sure whether it is pickled or not...

New filters and new membrane (both about 7 years old) also came with the boat.

My question to you guys: What steps to take to try and carefully re-use this gear? First run it on fresh water, or first clean the (old and mounted) filters, directly replace with the "new" 7-year old membrane or try the old one first, etc.

I'm on a budget and really hope the watermaker will work again. I have no previous experience with watermakers...

The set has two prefilters (5 and 20 micro) and 1 membrane (SW30-4021). Output should be 30 l/hour.

Thanks for the help guys.

Brgds,
Safc
__________________

__________________
Safc is offline   Reply With Quote
Old 08-02-2017, 06:20   #2
Registered User

Join Date: Mar 2007
Location: On the hook in Florida
Boat: Tayana V42 - Passages
Posts: 478
Re: Want to re-use watermaker after 5 years idle

I would not be surprised if both of your membranes are toast but I have heard of membranes that were stored for years and still worked fine.

I would replace the pre-filters and crank it up. You might luck out. I definitely would not go to the trouble of replacing a membrane until I knew the pump would run.
__________________

__________________
A St. Augustine Minorcan
jcapo is offline   Reply With Quote
Old 08-02-2017, 06:32   #3
Registered User

Join Date: Nov 2016
Posts: 90
Re: Want to re-use watermaker after 5 years idle

Just think "what's the worst that can happen". If it's just try it now and maybe the membrane will go out. Then replace that.

As with all my projects. Start simple and then work your way up.
__________________
hobopacket is offline   Reply With Quote
Old 08-02-2017, 07:19   #4
Registered User
 
TMT2's Avatar

Join Date: Dec 2012
Location: Herrington Harbour (South), MD
Boat: 1975 Gulfstar M53
Posts: 138
Re: Want to re-use watermaker after 5 years idle

Safc...If you have a TDS Meter and a Coliform test kit - I'd ensure all mechanicals are running well, replace pre-filters (as Jcapo suggests), make water from a natural environment source (don't use tap water or harbor water) and test for TDS (immediate) and Coliform (12-18 hrs). Reminder...ROP process will not remove petroleum product residue. Then - if you have "positive" Coliform test result at your millipour port ...replace RO menbrane and re-test...when the coliform test is "NEG" and TDS is satisfactory - you can divert product water to your tank/s. You may need to recycle a pickling sequence a few times to clean your product water lines on the "good water" side of your RO membrane before diverting to tanks since it has been sitting so long?

TMT2
__________________
TMT2 is offline   Reply With Quote
Old 08-02-2017, 08:03   #5
Registered User

Join Date: Nov 2015
Posts: 19
Re: Want to re-use watermaker after 5 years idle

Quote:
Originally Posted by TMT2 View Post
Safc...If you have a TDS Meter and a Coliform test kit - I'd ensure all mechanicals are running well, replace pre-filters (as Jcapo suggests), make water from a natural environment source (don't use tap water or harbor water) and test for TDS (immediate) and Coliform (12-18 hrs). Reminder...ROP process will not remove petroleum product residue. Then - if you have "positive" Coliform test result at your millipour port ...replace RO menbrane and re-test...when the coliform test is "NEG" and TDS is satisfactory - you can divert product water to your tank/s. You may need to recycle a pickling sequence a few times to clean your product water lines on the "good water" side of your RO membrane before diverting to tanks since it has been sitting so long?

TMT2
Hi TMT,

Thanks for the useful info ! Had to google that TDS meter... Would this be a good one ?
https://www.bol.com/nl/p/tds-meter/9...98&language=en

As for the coliform test; not sure where to get one in Europe (France) - but googling will probably give me the solution.

So, the TDS meter gives a good indication whether or not filters need replacement, right ? Might be easy to have for the future as well...

Thanks again.
Safc
__________________
Safc is offline   Reply With Quote
Old 08-02-2017, 08:13   #6
Registered User

Join Date: Feb 2012
Location: Toronto area when not cruising
Boat: Bristol 45.5
Posts: 499
Re: Want to re-use watermaker after 5 years idle

When I bought my boat the water maker had not been used for several years and had not been pickled. I asked the technician about replacing the membranes and he said lets just try it and see what happens. It worked fine and kept working. If it had not worked it would have meant new membranes.
__________________
Didn't get off to Newfoundland as hoped this summer. The post-circumnavigation refit has taken longer than expected. Still a few things to do, but basically Ainia is looking like a new boat (well sort of).
AiniA is offline   Reply With Quote
Old 08-02-2017, 09:00   #7
Registered User
 
TMT2's Avatar

Join Date: Dec 2012
Location: Herrington Harbour (South), MD
Boat: 1975 Gulfstar M53
Posts: 138
Re: Want to re-use watermaker after 5 years idle

Sfac - yes ... that's the TDS meter. Its purpose is to measure the Total Disolved Solids suspended in the water (the floaty stuff that make you go EWW!..I'm not drinking that!...There is a TDS "range" for potability (each country has a standard) and you can google that too.. but the TDS measurement will not tell you if there is harmful Coliform bacteria in the water product...the Coliform test kit I use is at this link... https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1. Its made by LaMotte (4-3616 Coliform Test Kit).

Disclaimer - I am not a health professional but I do have significant military ROPU experience. Potability of RO product water is a function of acceptible TDS plus a Negative result from a Coliform test and absence of petroleum or Anthrax spore residue (other tests)...if your TDS measurement is within World Health organization standards and there is no Coliform bacteria present AND you made water from beyond the 12 mile littoral...I'd drink it...which means the membrane/s is doing its job.

TMT2

__________________
TMT2 is offline   Reply With Quote
Old 08-02-2017, 09:08   #8
Senior Cruiser
 
Kenomac's Avatar

Cruisers Forum Supporter

Join Date: Jan 2012
Location: Somewhere in the Mediterranean
Boat: Oyster 53 Cutter
Posts: 6,419
Re: Want to re-use watermaker after 5 years idle

Run it and test the product water. If the water is good, you're all set. If not, replace the membrane.
__________________
Kenomac is offline   Reply With Quote
Old 08-02-2017, 09:21   #9
Moderator
 
a64pilot's Avatar

Cruisers Forum Supporter

Join Date: Oct 2013
Location: Albany Ga.
Boat: Island Packet 38
Posts: 13,553
Re: Want to re-use watermaker after 5 years idle

A TDS meter does not register the floaty stuff, but the invisible dissolved stuff.
Then there is no reason to wait until your 12 miles out to make water, you don't want to make water maybe in a nasty place with Diesel floating around on the water, but you can make water in brackish and not so clean looking water, you will need to more frequently clean your pre filters though, and adjust your pressure by watching volume of water your making to stay within limits in brackish water.
I don't even own a watermaker, yet

Watch Rich's videos on watermakers, they will tell you a lot
https://www.youtube.com/results?search_query=cruise+ro
__________________
a64pilot is offline   Reply With Quote
Old 08-02-2017, 09:39   #10
Senior Cruiser
 
Cheechako's Avatar

Cruisers Forum Supporter

Join Date: Aug 2006
Location: Skagit City, WA
Posts: 17,964
Re: Want to re-use watermaker after 5 years idle

I would be a bit concerned about a piston pump with salt water sitting in it for 5 years. Bronze or SS. But heck, doesn't hurt to give it a shot, I doubt it will last long but most stuff is replaceable and a lot less than buying a whole new watermaker.
__________________
"I spent most of my money on Booze, Broads and Boats. The rest I wasted" - Elmore Leonard











Cheechako is offline   Reply With Quote
Old 08-02-2017, 10:08   #11
Registered User

Join Date: Nov 2015
Posts: 19
Re: Want to re-use watermaker after 5 years idle

Thanks for the great answers guys!

I'll test it in two weeks, we'll see... Ordered the TDS meter and test kits.

Greetings
Safc
__________________
Safc is offline   Reply With Quote
Old 08-02-2017, 10:36   #12
Registered User

Join Date: Feb 2006
Location: Moving north on the east coast of the USo Chiapas, MX
Boat: Lagoon 470 cat
Posts: 187
Send a message via Yahoo to Moontide
Re: Want to re-use watermaker after 5 years idle

I haven't used my watermaker for years as I figure the cost to make water way exceeds getting it from ahore. May have to reload at numbers now that I'm in caribean. 30 cents a gallon is a bit steep
__________________
Moontide is offline   Reply With Quote
Old 08-02-2017, 15:54   #13
Senior Cruiser

Cruisers Forum Supporter

Join Date: Mar 2014
Location: Ft Lauderdale
Boat: KP 46
Posts: 232
Images: 2
Re: Want to re-use watermaker after 5 years idle

Quote:
Originally Posted by TMT2 View Post
Sfac - yes ... that's the TDS meter. Its purpose is to measure the Total Disolved Solids suspended in the water (the floaty stuff that make you go EWW!..I'm not drinking that!...There is a TDS "range" for potability

While you have your TDS meter out, it is informative to check what you drink. The "pretty much acceptable " (an industry term I am sure) is 500 ppm, Perrier usually tests around 350 to 400, some bottled waters go down to 100 others are pretty high. When I am running my watermakerI usually dump it until it is 300 or below.

Be careful when you run it on fresh water, keep the pressure down around 300 psi or less and make sure you do not have any chlorine in the supply, you can put a charcoal filter in the supply line if needed. But I find regular old sea water to be the best when recommissioning a watermaker, just let it run for a good while, then test it. then flush it for a bit with fresh water with just a wee bit of pressure (say 100 psi) and you are good to go.

M
__________________
captmikem is offline   Reply With Quote
Old 08-02-2017, 21:56   #14
Senior Cruiser
 
Symphony's Avatar

Cruisers Forum Supporter

Join Date: Jul 2011
Location: Ct
Boat: Tartan 4100
Posts: 366
Re: Want to re-use watermaker after 5 years idle

good info here. thanks
__________________
Symphony
Tartan 4100
Symphony is offline   Reply With Quote
Old 17-02-2017, 11:51   #15
Registered User

Join Date: Nov 2015
Posts: 19
Re: Want to re-use watermaker after 5 years idle

Hi all !

Tested the watermaker today:

- Bought 20 l of mineral water in the store
- Replaced both pre-filters (20 and 5 micro)
- Left the old membrane in place (it’s actually about 10 years old…)
- Filled up the existing “cleaning tank” (10 l), this tank was installed for pickling purposes I suppose
- Made sure all valves were set up correctly
- Turned on watermaker

Everything seemed to work, except I did not read any pressure on the manometer…

By the way: my watermaker has an automatic “switch” which determines if the water is good enough to go to the tanks or to guide it overboard. It’s called “automatic salinometer”. I have no idea if this switch still works and/or what made it decide to let all the water go overboard (as it did).

Any ideas why I had no pressure reading ? And would a test with salt water have any different results ? Unfortunately I’ll only be able to test again in a few months

Summary: My watermaker had no pressure on the high pressure pump and it decided to guide a lot of FRESH water overboard instead of to the tanks. . . (This water had 134 ppm TDS reading)

Thank for the help again guys.

Greetz,
Safc
__________________

__________________
Safc is offline   Reply With Quote
Reply

Tags
water, watermaker

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not 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 Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Yanmar 2GM20F stalling at idle after prop loss? pickpaul Engines and Propulsion Systems 7 30-01-2017 16:48
Buying and re-selling a boat after 2 years of use in the Caribbean Island_Dreamer Boat Ownership & Making a Living 20 05-10-2012 09:44
2 years planning, 2 years sailing...was it worth it? ABSOLUTLY!!! kingfish General Sailing Forum 14 19-04-2009 17:35
Restarting PERKINS 4108 engine after being idle for 4 years! Kevin Price Construction, Maintenance & Refit 24 07-01-2009 19:09
Engine idle woes-Will not idle after warm Pa La O La Engines and Propulsion Systems 5 24-09-2006 13:13


Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 01:39.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.