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OPERATION

MANUAL

Product:

Document #:

Rev:

Page:

SEAKEEPER 26 / 20HD

90266

3 of 3

Section 4: MAINTENANCE

SYSTEM / COMPONENT

TASK

INTERVAL

PARTS / SPECIAL TOOLS

Mechanical / Hydraulic
Brake

Replace brake bushings,
hydraulic accumulators, and
check valves

Inspect at 12

Months or 1000

Hours

– Replace

as needed or at

2000 Hours

Hydraulic hand pump kit,
Brake bushing replacement
tool kit, Hydraulic brake
parts kit

Mechanical / Hydraulic
Brake

Flush Hydraulic Oil

12 Months or

1000 Hours

Hydraulic Hand Pump Kit
Oil: AW46

Mechanical / Foundation

Inspect all four mounts on
Seakeeper foundation frame
for excess wear and play in
operation

– contact

Seakeeper service if any slop
in pin joint is detected.

12 Months or

1000 Hours

Cooling / System

Cooling system flush

12 Months or

1000 Hours

Fill reservoir, antifreeze

–

50/50 Ethylene Glycol mix

Содержание 20HD

Страница 1: ...Rev 7 MAR 2021 OPERATION MANUAL THIS MANUAL ALSO COVERS THE SEAKEEPER 20HD MODEL ...

Страница 2: ...System Overview Section 2 System Operation Section 3 Power Failures Alarms and Troubleshooting Section 4 Maintenance Section 5 Warranty Limit of Liability Property Rights Section 6 Specs and Summary 45310 ABELL HOUSE LANE SUITE 350 CALIFORNIA MD 20619 U S A PHONE 410 326 1590 FAX 410 326 1199 E MAIL customerservice seakeeper com ...

Страница 3: ...ns cable and a Display Figure 1 illustrates the interconnection of these components and their interface with the boat FIGURE 1 SEAKEEPER 26 STABILIZATION SYSTEM COMPONENTS Technical specifications provided in Section 6 list the power consumption total weight and dimensions of the major components Gyroscopic principals that apply to boat roll control are discussed on Seakeeper s web site at www sea...

Страница 4: ...s 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 The vertical arrows in Figure 2 illustrate the direction of the forces that the Seakeeper exerts on the boat s hull to damp roll motion FIGURE 2 SEAKEEPER PRECESSION Seakeeper precession is actively controlled by ...

Страница 5: ... from contacting the Seakeeper while it is in operation These covers should not be stood on or have anything placed on top The covers should always be in place during operation If it is ever necessary to touch the Seakeeper while the flywheel is spinning the Seakeeper must be locked at the display to stop the Seakeeper from precessing Seakeeper maintenance should not be attempted unless the Seakee...

Страница 6: ...xis about which the flywheel and enclosure precess or rotate up to 60 degrees during operation The gimbal bearings are supported by a foundation which is attached to the hull structure 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...

Страница 7: ...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 Sensors alarms and shutdowns are provided to allow unattended operation The display provides information in the event of an alarm Alarms cause precession to stop Stabilize Off and the Seakeeper to start coasting down Pow...

Страница 8: ...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 This high voltage exists even if the flywheel is coasting down and the supply voltage has been shut off The flywheel must be at Zero 0000 RPM and AC input power disconnected for at least 10 minutes prior to any service wo...

Страница 9: ...rough the Seakeeper s wire harness 1 6 Brake The brake mechanism consists of four hydraulic cylinders that attach to crank arms on the gimbal shafts The Seakeeper controller modulates how fast the oil can flow through the control valve thus controlling the precession rate of the Seakeeper The brake hydraulic circuit is a pre charged closed loop system that is there is no pump motor or reservoir in...

Страница 10: ...raulic circuit The flywheel enclosure water jackets to remove heat from the flywheel bearings The heated fluid then passes through a thermostat before bypassing or flowing through a heat exchanger that has sea water on the cold side The circuit also contains a coolant reservoir for coolant expansion and to make filling easy The reservoir contains a 7 psi 0 5 bar pressure cap The heat exchanger con...

Страница 11: ...ATION 2 0 Introduction This section describes operation of the Seakeeper 26 system 2 1 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 ...

Страница 12: ... touch screen to allow users to select functions POWER button The button will change from grey Power Off to blue Power On STABILIZE button The button will change from grey Stabilize Off to blue Stabilize On Home screen view These buttons toggle home screen between the Roll Angle Gauge and the Roll Angle Graph as shown below ...

Страница 13: ...ION 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 The selected page is highlighted in blue on the menu bar ...

Страница 14: ...htness slider Adjust the sleep timer from 1 minutes to 60 minutes or on all the time using sleep time slider Touching the screen will wake the display up after it has gone to sleep Change the sign of the roll angle value displayed in the roll angle gauge so the gauge matches the motion of the boat This will depend on installation orientation and will only need to be adjusted once Seakeeper facing ...

Страница 15: ...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 Change the display between day and night mode The selected mode is colored blue Change the units of the temperatures displayed on the service page between degrees Celsius and degrees Fahrenheit The selected units are colored blue 6 The info...

Страница 16: ... AC and DC power supplies 2 Turn on the boat s DC circuit breaker that supplies power to the Seakeeper 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 ...

Страница 17: ...ndicate 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 At this point the Seakeeper is available for stabilization 6 When the Seakeeper reaches its maximum operating speed where maximum stabilization is available the progress bar will disappear and the Seakeeper is available for maximum ...

Страница 18: ...the flywheel motor and slow the flywheel for any reason press the Seakeeper POWER button the button will turn grey and the stabilize button will disappear indicating the command has been accepted It takes approximately 6 hours for the speed to drop to zero rpm If it is necessary to stop Seakeeper motion for any reason press the STABILIZE button The stabilize button will turn grey indicating that t...

Страница 19: ... 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 1 Press the Seakeeper POWER button The POWER button will turn grey The Seakeeper will start coasting 2 Once the vessel is secured in the slip and the crew has shut down the generator and engines switch the...

Страница 20: ...r to start the coast down cycle before cooling is shutoff Once the vessel is secured in the slip and the crew has shut down the generator and engines the AC and DC breakers that control the Seakeeper should be switched to the OFF position The Seakeeper will continue to spool down to zero rpm No cooling is required during this time Note Seakeeper 26 will take approximately 6 hours to coast down to ...

Страница 21: ...will turn blue a Seakeeper 26 Normal operational speed is 5000 RPM 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 After a 24V ...

Страница 22: ...f the flywheel is coasting down and the supply voltage has been shut off The flywheel must be at Zero 0000 RPM and AC input power disconnected for at least 10 minutes prior to any service work on the motor drive box 3 1 24VDC Failure The display will be blank Flywheel speed will decrease The brake is locked no precession Verify the boat s circuit breaker supplying 24 VDC has not tripped and the AC...

Страница 23: ...e both acceptable cases of voltage fluctuation and should not cause an alarm unless the change in AC voltage is prolonged 3 3 230 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 s...

Страница 24: ...RATION MANUAL Product Document Rev Page SEAKEEPER 26 20HD 90266 7 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 ...

Страница 25: ...G 3 5 Alarm and Warning History 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 then select the alarm history screen ...

Страница 26: ...o environmental temperatures where winterization is necessary for storage reference Seakeeper service bulletin 90405 The Seakeeper comes standard with sealant and thread locker on applicable fasteners When reinstalling all fasteners use thread locker and sealant unless otherwise specified 4 1 REFERENCES Seakeeper 90025 Service Bulletin Brake Bleeding Seakeeper 90026 Service Bulletin Paint Informat...

Страница 27: ...tion interval accordingly 3 Months or 150 Hours Replacement Zincs are available from Seakeeper Cooling Hoses Check for cracks or chafing If damaged replace hose Fill cooling system and purge air 12 Months or 1000 Hours Anti freeze 50 50 Ethylene Glycol mix Cooling Seawater side Inspect heat exchanger for signs of leaks 3 Months or 150 Hours Cooling Seawater side Fill with environmentally safe mari...

Страница 28: ...ours Hydraulic hand pump kit Brake bushing replacement tool kit Hydraulic brake parts kit Mechanical Hydraulic Brake Flush Hydraulic Oil 12 Months or 1000 Hours Hydraulic Hand Pump Kit Oil AW46 Mechanical Foundation Inspect all four mounts on Seakeeper foundation frame for excess wear and play in operation contact Seakeeper service if any slop in pin joint is detected 12 Months or 1000 Hours Cooli...

Страница 29: ...ect to verification and confirmation by SEAKEEPER INC Seakeeper Heavy Duty Models Seakeeper warrants that the Goods sold hereunder are free from defects in material and workmanship This warranty is for the following period whichever occurs first MAJOR COMPONENTS SPHERE a 48 months 4 years from date the product put into service which shall conclusively be presumed to be the date of sale of a vessel...

Страница 30: ...UENTIAL DAMAGES FOR BREACH OF ANY WARRANTY OR OTHER OBLIGATION ARISING OUT OF THE SALE OF THE PRODUCTS OR FROM THE USE OF THE PRODUCTS OR ANY INABILITY TO USE THE PRODUCTS Written notice of claimed defects shall have been given to Seakeeper within the Warranty Period and within thirty 30 days from the date any such defect is first discovered The Goods or parts claimed to be defective must be retur...

Страница 31: ... ANY GOODS OR PARTS WHICH PROVE TO SEAKEEPER S SATISFACTION TO BE DEFECTIVE AS A RESULT OF DEFECTIVE MATERIALS OR WORKMANSHIP IN ACCORDANCE WITH SEAKEEPER S STATED WARRANTY IN NO EVENT SHALL SEAKEEPER S LIABILITY EXCEED THE TOTAL PURCHASE PRICE SET FORTH IN THIS ORDER 5 3 PROPERTY RIGHTS Except where otherwise expressly agreed all patterns tools jigs and fixtures drawings designs software and othe...

Страница 32: ... Watts 240 Watts Voltage AC Input DC Input 208 230 VAC 10 50 60 Hz Single Phase 24 VDC 10 Amps 208 230 VAC 10 50 60 Hz Single Phase 24 VDC 10 Amps Sea Water Supply to Heat Exchanger 30 LPM 8 GPM maximum 15 LPM 4 GPM minimum 30 LPM 8 GPM maximum 15 LPM 4 GPM minimum Ambient Air Temperature 0 60 C 32 140 F 0 60 C 32 140 F Weight 1431 kg 3 155 lbs bolt in installation 1431 kg 3 155 lbs bolt in instal...

Страница 33: ... from the frame to the adjacent hull structure Loads that the Seakeeper imposes on the hull structure are explained on Seakeeper Drawings 90271 and 90272 these loads do NOT include vessel motion accelerations such as vertical slam loads which can be high for higher speed vessels Cooling The Seakeeper bearings Motor Drive Box and hydraulic manifold are cooled by a closed water glycol mix cooling lo...

Страница 34: ...tions Alarm and Monitoring Sensors alarms and shutdowns are provided to allow unattended operation Sensors measure Seakeeper and drive temperatures vacuum pressure gimbal angle brake pressure and ship motion 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...

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