Seakeeper 26 Operation Manual
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Seakeeper 26 Operation Manual

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OPERATION MANUAL
*THIS MANUAL ALSO COVERS THE SEAKEEPER 20HD MODEL*
Rev 7 MAR 2021

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  • Page 1 OPERATION MANUAL *THIS MANUAL ALSO COVERS THE SEAKEEPER 20HD MODEL* Rev 7 MAR 2021...
  • Page 2 Product: Document #: Rev: OPERATION MANUAL SEAKEEPER 26 / 20HD 90266 SEAKEEPER 26 / 20HD OPERATION MANUAL MARCH 2021 Contents: Section 1 – System Overview Section 2 – System Operation Section 3 – Power Failures, Alarms, and Troubleshooting Section 4 – Maintenance Section 5 –...

  • Page 3: System Overview

    Seakeeper’s web site at www.seakeeper.com. The Seakeeper web site also contains videos of Seakeeper operation and videos of several different boats operating in waves with the Seakeeper on and off. It is recommended that the reader play these videos prior to reading the remainder of this manual.
  • Page 4 +/- 60 degrees about this position. The amount of torque that the Seakeeper exerts on a boat’s hull to counter the wave induced roll is directly proportional to the precession rate. The further the Seakeeper is from vertical (zero degrees) the lower the anti-roll torque.
  • Page 5 3 of 8 Section 1: SYSTEM OVERVIEW There is a large torque about the gimbal axis when the Seakeeper is precessing. Seakeeper cover panels are provided to prevent personnel or equipment from contacting the Seakeeper while it is in operation. These covers should not be stood on or have anything placed on top.
  • Page 6 This foundation transfers the loads that the Seakeeper produces to the hull structure. An active hydraulic brake mechanism is located on the Seakeeper assembly to regulate the Seakeeper’s precession motions about the gimbal shaft. It includes four hydraulic cylinders and a hydraulic manifold.
  • Page 7 Section 1: SYSTEM OVERVIEW 1.2 Display The display shown below is the user interface to the Seakeeper 26 and should be mounted at the primary helm station, unless the vessel has compatible Multi-Function Display, in which case the Seakeeper Display can be mounted elsewhere. It is used to start, operate, monitor and shutdown the Seakeeper.
  • Page 8 Section 1: SYSTEM OVERVIEW 1.3 Drive Box The glycol/water mix that cools the Seakeeper is also circulated through a cold plate inside the Drive Box to remove heat from high-power electronic components. The Motor Drive Box contains hazardous voltage. The cover should not be removed while the flywheel is spinning and the AC input voltage is present.

  • Page 9: Electronic Control Module

    Locking solenoids are installed in the circuit to lock the Seakeeper so it cannot precess if there is a leak in the circuit or a mechanical problem with the Seakeeper.
  • Page 10 Product: Document #: Rev: Page: OPERATION MANUAL SEAKEEPER 26 / 20HD 90266 8 of 8 Section 1: SYSTEM OVERVIEW 1.7 Cooling The cooling circuit is a closed loop that supplies a glycol/water (50% distilled water and 50% glycol) mix to: •...

  • Page 11: Display Screens: Overview

    This section describes operation of the Seakeeper 26 system. Display Screens: Overview 1) When 24 VDC is applied to the Seakeeper the DISPLAY will power up and initialize. The SPLASH screen will be displayed. 2) After the DISPLAY has initialized the HOME screen will be displayed.
  • Page 12 Document #: Rev: Page: OPERATION MANUAL SEAKEEPER 26 / 20HD 90266 2 of 11 Section 2: SYSTEM OPERATION 3) The display uses a touch screen to allow users to select functions. POWER button: The button will change from grey (Power Off) to blue (Power On).
  • Page 13 Product: Document #: Rev: Page: OPERATION MANUAL SEAKEEPER 26 / 20HD 90266 3 of 11 Section 2: SYSTEM OPERATION 4) When the MENU button is pressed, the menu bar will appear or disappear at the bottom of the screen. The menu bar is used to navigate between pages. From left to right, the available pages are home, settings, information, service, and alarm history.
  • Page 14 Product: Document #: Rev: Page: OPERATION MANUAL SEAKEEPER 26 / 20HD 90266 4 of 11 Section 2: SYSTEM OPERATION 5) The settings page allows the user to adjust the following: Increase or decrease the brightness of the display with the brightness slider.
  • Page 15 Low power mode consumes less power and should generate less noise. The selected speed is colored blue. When power is cycled (or Seakeeper turned Off), this speed will default back to the normal operating speed. Speed selection buttons shown below are examples and may not match operating speed of installed Seakeeper.
  • Page 16 3) Turn on the boat’s AC circuit breaker that supplies power to the Seakeeper. 4) In most cases, the seawater pump will be wired directly to the Seakeeper and turn on when the Seakeeper is turned on. However, in some cases the seawater pump is on a separate AC or DC circuit breaker and it is necessary to turn it on.
  • Page 17 7 of 11 Section 2: SYSTEM OPERATION To turn the Seakeeper on, press the POWER button; the button will turn blue. The progress bar will appear and indicate how soon the Seakeeper will be available for stabilization. When the Seakeeper is initialized and up to minimum operating speed the STABILIZE button will appear.
  • Page 18 To stabilize the boat after Seakeeper is on and above the minimum operating speed: 1) Press the STABILIZE button. The button will turn blue indicating that the Seakeeper is stabilizing the roll motion. The stabilization mode starts gradually; it takes 5-10 seconds to reach full effectiveness.

  • Page 19: Normal Shut-Down

    OFF. The Seakeeper will continue to spool down to zero rpm. No cooling is required during this time. Note: The seawater pump may run for 5 minutes after the Seakeeper is switched off and is coasting (with AC power applied).
  • Page 20 10 of 11 Section 2: SYSTEM OPERATION The circuit breakers should be left on as long as possible while the Seakeeper is spinning to remove heat from the Seakeeper. During normal operation, the Seakeeper should be stopped when pulling into port and stabilization is no longer required.

  • Page 21: Speed Adjustment

    Low power mode operates at 4000 RPM, which allows stabilization at a reduced flywheel speed. After a 24V power cycle to the Seakeeper, the speed selection will revert to 5000 RPM. b. Seakeeper 20HD: Normal operational speed is 3850 RPM. Low power mode operates at 3100 RPM, which allows stabilization at a reduced flywheel speed.

  • Page 22: Power Failures

    24 Volts DC powers the Seakeeper control electronics. • 208 - 230 Volts AC powers the Motor Drive Box to drive the motor inside the Seakeeper and seawater pump. These are supplied on Cables 1 and 2 which are shown on Seakeeper drawing 90310, Cable Block Diagram.
  • Page 23 230 VAC Fluctuation, Spike or Momentary Failure If the AC voltage to the Motor Drive Box is outside Seakeeper’s specified range (208 – 230 VAC), the Motor Drive Box will briefly shut down for protection. The Motor Drive Box will continue operation when the voltage returns to the specified range.
  • Page 24 Product: Document #: Rev: Page: OPERATION MANUAL SEAKEEPER 26 / 20HD 90266 3 of 4 Section 3: POWER FAILURES, ALARMS, AND TROUBLESHOOTING • A view of a typical Alarm screen. • To reset the Alarm, press the RESET ALARM button...
  • Page 25 The alarm history page on the Display shows the recent alarms and warnings. The alarms are in chronological order starting with the most recent. Warnings included in the history page are for issues that do not affect Seakeeper operation. 1) Press the MENU button...

  • Page 26: Maintenance

    Scheduled Maintenance to keep the Seakeeper running trouble-free. If the Seakeeper is installed in a wet space, efforts should be made to keep the Seakeeper free of salt residue from either condensation or direct exposure to salt spray. If exposed, a regular wipe down with mild soap and water with a rinse will help limit corrosion and keep the Seakeeper assembly in good cosmetic condition.

  • Page 27: Scheduled Maintenance Table

    Product: Document #: Rev: Page: OPERATION MANUAL SEAKEEPER 26 / 20HD 90266 2 of 3 Section 4: MAINTENANCE SCHEDULED MAINTENANCE TABLE • The following pages contain the scheduled maintenance table organized by systems: Mechanical, Hydraulic, Cooling, and Electrical. Scheduled maintenance is not covered under warranty.
  • Page 28 Product: Document #: Rev: Page: OPERATION MANUAL SEAKEEPER 26 / 20HD 90266 3 of 3 Section 4: MAINTENANCE SYSTEM / COMPONENT TASK INTERVAL PARTS / SPECIAL TOOLS Inspect at 12 Hydraulic hand pump kit, Replace brake bushings, Months or 1000...

  • Page 29: Warranty

    24 months from date the product put into service, which shall conclusively be presumed to be the date of sale of a vessel, on which a SEAKEEPER product is installed, to a retail customer or date put into service on an existing vessel (refit).
  • Page 30 Buyer/User, with written specifications of the claimed defect. If a warranty claim is valid, SEAKEEPER, INC. will repair or replace the Product, or part of the Product, proven to be defective, at its sole discretion, in a timeframe provided by SEAKEEPER, INC., on a reasonable best effort...

  • Page 31: Limitation Of Liability

    Except where otherwise expressly agreed, all patterns, tools, jigs and fixtures, drawings, designs, software and other materials and data developed, fabricated by Seakeeper shall be and shall remain Seakeeper's property. Except as specifically provided for in the order, Buyer shall have no right in any technical data, Intellectual Property Rights, and computer software associated with the order.
  • Page 32 Rev: Page: OPERATION MANUAL SEAKEEPER 26 / 20HD 90266 1 of 3 Section 6: SEAKEEPER SPECIFICATIONS Seakeeper 26 / 20HD Specifications & Summary Seakeeper 26 Seakeeper 20HD Rated RPM 5,000 RPM 3,850 RPM Angular Momentum at Rated RPM 26,000 N-M-S...
  • Page 33 Cover Subsystems. Installation Location The Seakeeper is a torque device and does not have to be installed in a specific hull location or on the centerline. However, the Seakeeper should not be installed forward of the longitudinal center of gravity in a planing vessel.
  • Page 34 The Seakeeper controller sends sensor values and alarm information to the display and also locks the brake and shuts down the motor drive in the event of an alarm condition. Seakeeper operating history during faults or alarms is recorded in the controller’s memory for subsequent recall if service is needed.

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