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Old 08 June 2005, 08:53   #1
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Automatic Bilge Pumps

I know this has been discussed before, but I can't seem to find the answer I'm looking for.

We are thinking of replacing or bilge pump with an automatic bilge pump and are considering either one of the Rule-Mate pumps (internal float switch) or one of the Rule computerised pumps (The pump will turn on every 2-1/2 minutes for about one second to sense for water. If water is present, the pump will sense resistance and continue to run until all water is remove).

My question is will my battery be able to cope with this?

It's a good quality battery as far as I know and has to start a 150 Optimax. Have thought about fitting a second battery but don't really have space for it.

Any suggestions?

Which type of pump would you reccommend (float or computerised)?
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Old 08 June 2005, 09:30   #2
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All the float switch pumps i have tried have eventually failed from the beating they take in a RIB. I am interested in this new "computerised" Rule you mention - can you post a link or part number?

Weather your battery can handle this or not probably depends mainly upon how much water you get in your boat - do you cover it? I asume it's left afloat and you want it nice and empty when you go down to it - personally i would reccomend a second battery, it could be very frustritating to have a flat - also the Opti's need quick a lot of kick in the battery to start.
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Old 08 June 2005, 09:34   #3
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I hate all bilge pumps without exception. BHG Marine are going to fit supply and fit Piranha 600gph + one float switch WITH WARRANTY. Hope this solves my problems.....
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Old 08 June 2005, 09:39   #4
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Sorry to bring bad news, been there, tried that make and model - it broke.
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Old 08 June 2005, 12:32   #5
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These are the computerised versions I mentioned:

http://www.rule-industries.com/prodI...E&typeId=RATBP

If I was to go with one of these it would be very convenient as it would be a straight swap for my old bilge pump http://www.rule-industries.com/prodI...E&typeId=RATBP

The other float-type pump pump I was thinking of is one of these http://www.rule-industries.com/prodI...tegoryId=BILGE

I would imagine that the float type pump would use less power as it only switches on when needed, whereas the computerised one would probably draw more power as it switches on every 2.5 minutes, but it also be more reliable as it has no float switch.

Has anybody any experience in running something similar from a single battery?
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Old 08 June 2005, 12:42   #6
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I have an automatic rule on my rib.. Altho I have two batteries, when I leave the rib, I set the switch so only battery 2 is having power taken from it.. The longest I have left the boat unattended, (with the bilge in auto mode,) is about 3 weeks, and the battery was no-where near flat, and turned the engine first time..
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Old 08 June 2005, 13:09   #7
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Quote:
Originally Posted by swginn
Has anybody any experience in running something similar from a single battery?
Yes - currently have a float switch type, but had a "computerised" type in a previous boat. The only times I've ever had a flat battery was after leaving the previous boat on a mooring for three months, and once on the current boat when a small stone jammed the pump. The "computerised" type survived well in a dirty environment. The float switch that I have now tends to be unreliable at the beginning of the season - it sometimes jams - either open or closed. It's OK now after much washing, but I expect that it will be unreliable again next spring after the winter lay-up.
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Old 08 June 2005, 13:25   #8
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I've tried the Rule Computerised model - the sensor was often affected by oily residue in the bilge and after a year it packed in.

Next tried the Rule with internal float - lasted 6 months before packing in - it failed by running continuously and ran down my number 2 battery!

Now on a separate Rule float switch and pump, installed one month ago, so watch this space.

I reckon you will one day return to a flat battery with an auto-pump. If you fit one, I would certainly recommend a second battery.
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Old 08 June 2005, 14:37   #9
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Quote:
Originally Posted by brucehawsker
BHG Marine are going to fit supply and fit Piranha 600gph + one float switch WITH WARRANTY. Hope this solves my problems.....
Been through two of these. Pump absolutely fine and very powerful. Float switch useless. Neat idea encased in plastic but I found it just gets wedged with the slightest amount of debris or scale build up. Ends up either jamming on or off.

Keith
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Old 08 June 2005, 14:41   #10
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automatic

Hi I went for twin 1500 gph automatic models they work fine and move tons of water as established when we went astern and took a wave in reverse(muppets!!)
not worth having the float switch in my experience. they are not new computerised but merely automatic.
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