Having just put the boat on the hard for the winter, I decided to lower the anchor and chain to the ground, placing it on a wooden pallet so I could wash it all with fresh water and possibly spray it with a light oil or WD40.
knowing that the windlass can only work when the engine is on I assumed by turning on the ignition it would work, but no, it will only work with the engine running, regardless of the fact I was connected to shore power. Obviously I can’t run the engine on dry land, unless of course I connect a water supply to the inlet seacock.
I see many boat winterised with their chain and anchor dropped, so why don’t the designers at Jeanneau think of these things? The only way I can achieve this would be to lower the 33kg Rocno on a rope then drop and retrieve 75 meter of 12mm chain by hand, but what an effort!
Isn't it just a matter that the windlass needs sufficient amperage, which can only be supplied by the engine's alternator if the windlass motor is too power hungry?
Running the engine on the hard is not difficult, just disconnect the hose from the inlet seacock and put it in a bucket with water. Make sure to constantly fill the bucket with freshwater. It is something you want to do anyway for the winter, to flush the seawater circuit with freshwater to avoid corrosion. In cold climates, finish off by adding a few litres of antifreeze.
Note that it is important to let the engine suck in the water, never connect a hose with pressurised water directly to the inlet. That can lead to water ingress in the cylinders via the exhaust manifold.
The D+ from the alternator is used to enable the windlass. This makes sure that the engine is running and the alternator is working. All to avoid draining the batteries.
On the windlass control there are two pins that you can connect so that it will operate without the engine running. You can look up the windlass control in your manual or electric schematics from Jeanneau to find where these two pins are located.
On my boat i made a hidden switch for this purpose.
Ours has a shorting link which allows the windlass to be used even when the engine is off. Pretty certain that this is a common feature. I have meant to connect a switch in case I ever need to use the windlass in an emergency and can't start the engine.
Jeanneau provided a shorting link taped beside the windlass motor in the forepeak. I checked the wiring diagram and tried it out once when working on the windlass. Just a matter of plugging it in to connect 2 terminals. Could be worth checking on your boat.
The 42DS refers to the normal connection as "No shunt so that the windlass works after the start of the engine". Just a matter of linking across these terminals to operate even without the engine. Obviously not a good idea for normal use but fine for a one-off in the yard when shorepower is available.
I had our windlass swapped from engine on to engine off operations. When stern to mooring in the med there are times you simply want to get in and make yourself secure then later take in or let out a bit of chain to balance the position. Starting your engine just to make minor adjustments can really annoy the neighbours or wake everybody up if this is in the middle of the night.
Obviously I don't try to raise a large length of chain without the engine but this set up works for me.
My windless is also working if necessary only with the batteries and I use it in the same way like Alenka. On the hard I think the load on the windless is very low even going up. Therefore it should be without problem. But when I did it in the past the shore power was connected because I want to have really full batteries at the beginning of the winter.