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INSTALLATION MANUAL

Install the Sleipner automatic main switch 897612 (12V) / 897624 (24V) for ON/OFF and proportional thruster systems: placement, dimensions, fuse and cable fitting, wiring for single and dual thrusters, service and troubleshooting.

DocumentSleipner Automatic Main Switch 897612, 897624 Installation Manual
FormatPDF · 16 pages · 1.1 MB
LanguageEnglish
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Sleipner Automatic Main Switch 897612, 897624 — Installation Manual

Considerations

  • Install the AMS as close to the battery bank as possible, in a location that stays dry at all times, with quick access to the shut-off button and short power cables.
  • Only connect it to compatible original Sleipner control panels or control devices.
  • Do NOT fit it in spaces requiring ignition protected equipment.
  • Use the correct fuse for the installed thruster model (see the thruster installation manual). This manual is used in addition to the thruster manual and is intended for professionals.

Product Dimensions

Code Description mm inch
H Height 194.3 7.6
L Length 205 8.1
W Width 79 3.11
+W Width including fasteners 90 3.54
(a) Attachment hole from the top 51.5 2.03
(b) Attachment hole from the bottom 92.8 3.65
(c) Attachment hole from the side 37.5 1.5
(d) Distance between attachment holes 121.8 4.8
(e) Attachment hole from the side 45.7 1.8

Mounting, Fuse and Cables

  1. Remove the cover screws and cover; secure the AMS with the two mounting holes on each side.
  2. Remove the nuts and washers, install the fuse (type and rating per the thruster installation manual).
  3. Assemble washers, battery cable(s), end washer and nuts; tighten to 20 Nm (14.5 lb/ft). The bolts are brass: excessive torque damages the threads.
  4. Fit the thruster cable(s) the same way and tighten to the recommended torque.
  5. Manual override: pulled out = remote controlled ON/OFF (default); pushed in = OFF. Leave it OFF when leaving the boat for long periods or when installing or servicing the thruster system.

Do NOT use washers between lugs: it can cause overheating and a thermal event. Spring washers go in the outer position before tightening the nut. For dual cables, leave one washer on each bolt as shown in the PDF.

Electrical Installation

  • ON/OFF configuration: 4-lead control cable between thruster and AMS (only 3 leads used – the red wire is not connected into the AMS).
  • Proportional configuration: 5-lead control cables between the AMS and the control panels, with 5-lead Y-connectors to branch to every control.
  • Main cable sizes: see the table in the thruster manual.
  • The solenoid supply is taken from the thruster battery positive through a 5A fuse; the ON/OFF panel connects to the AMS and thruster through the 4-lead cable (a Y-connector branches it to both systems in a dual installation).
  • Dual thrusters with dedicated batteries: connect the negative poles of both batteries with a 10A fuse in between.

With the main switch off, check with an ohmmeter that there is no connection between the electro-motor flange and either the positive or the negative terminal of the motor. If unsure, contact skilled personnel.

Service and Troubleshooting

Service

  • Keep the equipment clean and dry.
  • Check all cable and other connections are tight, without signs of excessive heat or corrosion.

Panel Will Not Activate

  • Check the AMS gets positive feed on its thin red lead (and any other main switch in that feed is ON).
  • Check the internal overheat (bi-metal) switch on the circuit board has not opened – it resets when cold.
  • Check the 5A fuse on the red positive cable to the AMS.
  • Check the thermal switch in the electric motor has not tripped from heat, and all control cable connections against the thruster wiring diagrams.

Panel On, Thruster Will Not Run

  • Manual override knob in ON (pulled out).
  • Main power fuse in the AMS not blown – and of the right size; if a correct fuse keeps blowing, find the cause.
  • The AMS activates with the panel: if not, check wiring, especially the constant separate negative (thin black lead) and the panel feeding positive into the yellow lead.
  • Power at the thruster: measure voltage at the thruster main terminals while running. Below 8,5V (12V system) or 16V (24V system): check batteries and main cables.

Need a part that isn't listed? Ask us to source it and quote the part number from the PDF.

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