On 21 Apr 2020, at 06:51, CW Bill Rouse <brouse@...> wrote:

FYI, Dessalator originally made the membrane tube end caps out of white nylon. Emek copied Dessalator. Dessalator's choice of Nylon proved to be the wrong choice. Dessalator later made end caps from a harder material which was black. I am not sure of what the black material is, but, in my experience is that there have been very few issues with the Dessalator black end caps.
--

 

Best,

 

CW Bill Rouse
Amel Owners Yacht School
720 Winnie St
Galveston Island, TX 77550
+1(832) 380-4970

My Calendar 

On 21 Apr 2020, at 06:31, eric freedman <kimberlite@...> wrote:

Hi Jean-Pierre,

Did you have white colored end caps? If you did not and have the black end caps,

what modifications did you do to the new end caps?

Fair Winds

Eric

Amel Super Maramu #376

 

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Germain Jean-Pierre
Sent: Monday, April 20, 2020 2:16 PM
To: main@amelyachtowners.groups.io
Subject: Re: [AmelYachtOwners] ZOOM Meeting Technical Questions: #ZOOM

 

Hello Bill,

 

I’d like to address the subject of the Dessalator membrane holders.  I consider them under engineered, especially the end caps.  (Duo60 and Duo 100 models)

 

I’ve had a NZ shop replicate the end caps but due to Covid-19, I’ve been unable to pickup the parts and complete a change over.

 

Has anyone modified the tubes or manufactured a different type of membrane system?  

 

Kind regards,

 

 

Jean-Pierre Germain, SY Eleuthera, SM007, New Zealand.

jp.germain45@...

 

 

On 21 Apr 2020, at 05:41, CW Bill Rouse <brouse@...> wrote:

 

For those planning to attend the ZOOM meeting, please post questions to the Topic " ZOOM meeting technical questions" by replying to this email.

Tilo Peters will likely respond to these technical questions.
-- 

 

Best,

 

CW Bill Rouse
Amel Owners Yacht School
720 Winnie St
Galveston Island, TX 77550
+1(832) 380-4970

My Calendar 

<image001.jpg>

 

On Apr 19, 2020, at 8:50 PM, eric freedman <kimberlite@...> wrote:

Hi Tom,

Have you heard when they are lifting the quarantine on puerti Rico?

Fair Winds

Eric

Amel Super Maramu #376

 

 

From: main@AmelYachtOwners.groups.io [mailto:main@AmelYachtOwners.groups.io] On Behalf Of Thomas Peacock
Sent: Sunday, April 19, 2020 12:13 PM
To: main@amelyachtowners.groups.io
Subject: Re: [AmelYachtOwners] Excessive usage of water maker membranes

 

My only thought is like others, make certain that there is no chlorine. Obviously, there shouldn’t be if all you do is make RO water. Do you ever put water in the tank from the marina? We often have both RO and shore water, tough to tell how much chlorine, although you can buy test strips. I will sometimes flush with a couple of gallons of RO water drawn from the control panel tap, rather than flush with water from the tank.

 

Assuming the above is useless advice, you might try looking at  https://www.genesysro.com/uploads/docs/STUDY%20OF%20THE-PHYSICAL-AND-CHEMICAL-DAMAGE-ON-REVERSE-OSMOSIS-MEMBRANES-DETECTED-BY-AUTOPSIES-NURIA.pdf

 

This details some of what can go wrong, including post-mortem pictures. Interestingly, there are several causes for physical damage to the membranes (as opposed to chemical) that might have some bearing on your issue.

 

Tom Peacock

SM 240 Aletes, San Juan PR

Waiting to fly back down to PR next month

 

On Apr 18, 2020, at 8:21 PM, Mark Erdos <mcerdos@...> wrote:

 

I need a little help with water maker usage and maintenance, please.

 

Cream Puff has a 24v D60 water-maker. My problem is we seem to be going through membranes at the rate of a pair a year. I have read where others have used the same set of membranes for years and still get drinkable water. This is not the case with us. We are in our 5th year of full time cruising and are now on our 6th set of membranes. 

 

When I last change membranes in Colombia, this was about March 2019. Our current membranes are just over a year old. The PPMs are starting to creep up a bit now and we have gone from the 300 range to the 500 range. We notice a change in drinking quality over 600 PPMs. This is when we usually change the membranes. 

 

We run the water-maker at least once a week when in a marina, flush it with the fresh water rinse. I have a double charcoal filter set up for the tank rinse. When on anchor it is run just about every day. I am careful to watch the pressure and water making float gauge. I normally set it at 55 liters per hour and this put the pressure in lower side of the green range. 

 

Any ideas why our membranes are not lasting or why our PPMs creep up? 

 

 

With best regards,

 

Mark

 

Skipper

Sailing Vessel - Cream Puff - SM2K - #275

Currently cruising - Tahiti, French Polynesia

www.creampuff.us

 

 

Hello Bill,

On 21 Apr 2020, at 05:41, CW Bill Rouse <brouse@...> wrote:

For those planning to attend the ZOOM meeting, please post questions to the Topic " ZOOM meeting technical questions" by replying to this email.

Tilo Peters will likely respond to these technical questions.
--

 

Best,

 

CW Bill Rouse
Amel Owners Yacht School
720 Winnie St
Galveston Island, TX 77550
+1(832) 380-4970

My Calendar 

On Apr 19, 2020, at 3:59 PM, CW Bill Rouse <brouse@...> wrote:

A new poll has been created:

We would like to ask you which Topics you prefer to be discussed during the ZOOM meeting and if you are OK with the Tentative Schedule.

The following is the Tentative Schedule for the ZOOM meeting. By selecting GMT at 2000 hours, we can include members worldwide.:

Country	GMT +/-	Sched Time	Sched Date
UK (GMT)	0	2000	4/25/2020
NZ	1200	800	4/26/2020
AU Queensland	1000	600	4/26/2020
Tahiti	-1000	1000	4/25/2020
USA West	-700	1300	4/25/2020
USA East	-400	1600	4/25/2020
USA Central	-600	1400	4/25/2020
Martinique	-400	1600	4/25/2020
Germany	200	2200	4/25/2020
Central EU Summer Time	200	2200	4/25/2020

You can select multiple answers.

We plan a 30-minute ZOOM meeting with 15 minutes to discuss each of 2 Topics. We currently have 35 members that have expressed the wish to participate. I have a list of those members and will send an email to you today.

1. I am OK with the Tentative Schedule
2. Sourcing parts
3. SM & SN furler maintenance (Genoa & Main)
4. Hard Dodger plexiglass replacement
5. Galley Upgrades
6. Standing Rigging
7. Navigation Equipment Upgrades from B&G Hydra and B&G 3000

Vote Now

Do not reply to this message to vote in the poll. You can vote in polls only through the group's website.

hi, Bill, add an option to discuss ideas about summer navigation perspectives in different regions...