Last week I have installed the Ecopilot power-saving device for the Lecomble et Schmitt hydraulic cylinder. See some previous posts by Cotemar and me.
I installed it as follows:
- The device is a replacement-plug for the standard plug
on the hydraulic cylinder, see picture. The new plug
has electronics inside.
- I installed the new plug with it's own cable connected to the autopilot in parallel to the standard plug. This way, if the new device breaks down, you can swap back fast.
- I purchased 2.5 metres of household 3-lead 3*0.75 mm2 cable. With european colors blue for + lead, brown for - lead, yellow/green for ground.
- This is connected to the device which is basically a PCB inside a connector with very litlle space to spare. It is a nice water-tight construction. There is little space in the plug so pay attention to the length of the leads, see picture.
- I pulled the new cable through the big grey hose holding multiple cables
- On the autopilot side, the cable is connected in parallel to the standard cable: (see the Furuno autopilot installation
manual, the fold-out on the last page)
-- Blue lead, Bypass/Clutch +, is connected to connector TB3 pin 1, B/C_Power.
--Brown lead, Bypass/Clutch -, is conected to connector TB3 pin 2, B/C.
-- Yellow/Green lead, Gnd, is connected to connector TB3 pin 3, Shield.
- I put the original plug in a zip-lock bag to prevent loss of the rubber seal and bolt. And tied it up with a tie-wrap.
- See the paper coming with the new plug.
- Remove the main fuse of the autopilot before starting work on this.
- The polarity of the original clutch
may be reverse, you can swap this. Do not swap the polarity of the new plug.
- Work neatly on the autopilot side. The wires are very close together on plug TB3. If you have some stray wires making contact between the connections, you will damage a relay in the autopilot. Especially between pins 1 and 2.
- The Gnd wire is not essential. It will give some reduction of RF interference
. It would be nice to use a 2-lead wire with shield instead. However this causes more risk of short-circuit on the plug side by stray wires.
- Power reduction is around 1.25 Amps. I confirmed this using our Nasa battery monitor