Watermakers - SailNet Community
LinkBack Thread Tools
post #1 of 1 Old 08-15-2002 Thread Starter
Contributing Authors
Join Date: Jan 2000
Posts: 536
Thanks: 0
Thanked 11 Times in 9 Posts
Rep Power: 18

I am considering buying a Pur40E water desalinator. I hope run it off of a battery, charged by a solar panel. How many amps does the unit draw to operate per hour?

Sue & Larry respond:
Having just added a watermaker ourselves to Serengeti about a year and a half ago, we can certainly vouch for the wonderful freedom of having an unlimited amount of freshwater onboard. Solar panels can certainly power these units, as thatís our main source of power.

Cruisers that we know using the PUR40E tell us that it consumes approximately four amps per hour of operation. The output of this model is reported in the brochure to be one-and-a-half gallons per hour, but as your battery discharges output also decreases. For planning purposes our friends tell us that they see an average of one and two tenths gallons per hour.  

When sizing your solar panels and battery bank, keep in mind that you can realistically expect to use only 50% of the rated amp hour capacity of your battery bank.  The addition of a battery monitor can help you more precisely monitor consumption and charging. If you continually discharge below the 50-percent level, you will considerably lessen the life of your batteries. You may want to check out our article, Choosing and Installing Solar Panels, archived here at SailNet.  


Sue & Larry is offline  
Closed Thread

Quick Reply

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


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

Email Address:


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

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

BB code is Off
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