RB-568-00_Bow Thruster Tech Man Sect 2.pdf

SECTION TWO PAGE 1

OPERATING AND

MAINTENANCE

INSTRUCTIONS

SECTION TWO

BAUER ELECTRIC STEERING

GEAR MOTOR AND BRAKE,

THRUSTER ELECTRICAL

ANCILLARIES

HALTER MARINE INC, MOSS POINT SHIPYARD, MOSS POINT, MS

"AGOR" CLASS OCEANOGRAPHIC RESEARCH VESSELS

NUMBER

'AGOR24'

'AGOR25'

'AGORNOAA'

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NAME HULL NO.

'ROGER REVELLE' M250

'ATLANTIS' M251

'RESEARCHER' M252

ELLIOTT UNIT SERIAL OPERATOR

CONTRACT NO.

CG12666 G653W SCRIPPS I.O.

CG14734 G656W WOODSHOLE O.I.

CG14735 G657W N.O.A.A

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SECTION TWO PAGE 2

SECTION TWO - INDEX OF CONTENTS

BAUER ELECTRIC STEERING GEAR MOTOR AND BRAKE,

THRUSTER ELECTRICAL ANCILLARIES

B 1 GENERAL TECHNICAL SPECIFICATION

(i) Bauer Electric Steering Gear Motor And Brake

(ii) Thruster Electrical Ancillaries

B2 STEERING GEAR MOTOR INSTALLATION INSTRUCTIONS

B3 STEERING GEAR MOTOR DETAILS

B4 STEERING GEAR MOTOR BRAKE UNIT DETAILS

BS STEERING GEAR MOTOR FAN UNIT DETAILS

B6 STEERING CONTROLS MAINTENANCE INSTRUCTIONS

(i) Steering Gear Motor

(ii) Steering Gear High Reduction Right Angle Gearbox

(iii) Steering Gear Motor Brake

B7 THRUSTER ELECTRICAL ANCILLARIES

(i) Dropsa Electric Lubrication Oil Pump Unit

(ii) Danfoss Lubrication Oil Pressure Switch

(iii) Thrust Bearing K Type Thermocouples

(iv) Thrust Deflector Position Potentiometer/Transmitter

B8 SPARE PARTS IDENTIFICATION

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SECTION TWO PAGE 3

INDEX OF CONTENTS Contd.

B9 STEERING MOTOR ASSEMBLY DRG. NO. 4640 WG REV. "A"

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TRANSMITTER ASSEMBLY DRG. NO. 5259 EGS REV. "B"

APPENDIX "A" BAUER STEERING GEAR MOTOR/GEARBOX MANUAL

KD-CFG88 DEF

APPENDIX "B" BAUER STEERING GEAR MOTOR BRAKE UNIT

MANUAL BA8791E

APPENDIX "C" BAUER STEERING GEAR MOTOR FAN UNIT

MANUAL E69-DKN5

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Bl GENERAL TECHNICAL SPECIFICATION

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(i) BAUER ELECTRIC STEERING GEAR MOTOR AND BRAKE

The thruster is fitted with an electric steering gear, comprising a reversible AC electric motor, coupled to the thruster deflector steering shaft through a motor mounted, high reduction, beveVhelical, right angle gearbox and pin type coupling.

Manual control of the thrust direction (deflector steering) is possible from the thruster room mounted starter and control box or from the remote Bridge Control panel position located in the Wheelhouse. The position selection is effected by a control position selector switch on the starter and control box.

An appropriate signal from either of these positions, or from an input signal from the ship's joystick or future dynamic positioning system, will, through the steering motor start contactors in the starter and control box, rotate the steering motor clockwise or counterclockwise and so turn the thruster deflector in the desired direction.

When the required direction of vessel movement is reached, ( 180° opposite to the direction of the jet output from the thruster), release of the motor turning signal will stop rotation of the motor and lock the thruster deflector shaft into position, by means of an electromagnetic disc brake unit mounted to the free end of the steering motor rotor shaft.

Mounted also to the end casing of the motor is an integral electric motor driven fan unit, for force cooling of the steering motor during periods of heavy duty. The motor driven fan is powered directly from the starter and control box and is running constantly whenever the thruster is activated.

The thrust direction indicated and feedback to the control positions is provided by a transmitter assembly mounted to the top of the steering motor. The two transmitters providing the direction indication are directly coupled by means of a gear train to the steering gear motor output shaft/thruster steering shaft.

For full technical details regarding the steering gear motor, refer to the relevant following Sections B3, B4 and B5 and the STEERING GEAR MOTOR INSTRUCTION MANUAL in Section B9.

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(ii) THRUSTER ELECTRICAL ANCILLARIES

Included in this section of the manual are details relating to the following thruster mounted electrical ancillaries:

1) Drop sa electric motor driven lubricating oil pump for thruster rotor shaft external bearing assembly.

2) Danfoss pressure switch units for thruster rotor shaft external bearing assembly.

3) Wainwright 'K' type thermocouple probe for thruster rotor shaft external bearing assembly.

4) Sakae thrust deflector position potentiometer/transmitter units.

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B2 STEERING GEAR MOTOR INSTALLATION INSTRUCTIONS

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Examine the steering gear unit and pedestal for any mechanical damage, prior to installation on the thruster.

After ensuring that the machined surfaces on the thruster mounting bracket and steering motor pedestal are cleaned of applied anti-corrosion agent, the steering motor unit can be mounted on the bracket, aligned in accordance with the Elliott project drawing 4639 WG included in manual SECTION ONE and drawing 4640 WG in this section.

The steering motor assembly should be bolted down to the thruster mounting bracket, after aligning the pin type coupling fitted between the thruster steering shaft and the steering motor output shaft. The two halves of this coupling, type Wellman Eflex FPB, size 240/Fl2, can be simply aligned by placing a straight edge across the two halves of the coupling.

After the steering motor assembly has been bolted down and all components electrically connected, the steering gear mounted thrust direction indicating equipment should be aligned, as detailed in SECTION ONE, heading AS (v) .

DO NOT ATTEMPT TO START MOTOR UNDER POWER UNTIL ALL

NATIONAL AND LOCAL REGULATIONS REGARDING CONNECTION,

INSULATION TESTING AND GROUNDING OF ELECTRIC MOTORS HAVE

BEEN COMPLIED WITH.

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B3 STEERING GEAR MOTOR DETAILS

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The steering motor/gearbox/brake/fan motor combination was supplied to the following specification.

TECHNICAL DATA

MANUFACTURER

MOTOR MODEL NO.

DESIGN TYPE

SERIAL NUMBERS

YEAR BUILT

POWER

FULL LOAD MOTOR SPEED

GEARBOX FULL LOAD

OUTPUT SPEED

OUTPUT TORQUE

VOLTS/PHASE/HZ

ENCLOSURE

INSULATION CLASS

ANTI-CONDENSATION HEATER:

WINDING OVER TEMPERATURE:

CONNECTIONS

BRAKE UNIT

WEIGHT (APPROX.) INCL.

MOUNTING BRACKET

Bauer

CFGll-216/DSAS-429-BR-FB

CFG 11

1649020-1

7.5 kW

870 rpm

52 rpm

1257 Nm

480/3/60

Totally enclosed, fan cooled to IP 65

F

230 V/1 phase/60Hz

Thermistors, 2 per phase, 140°C warning, 160°C cut off

Direct on line

Type GBZ (S) 1 OOOWS, rated at 100 Nm, with l70V, DC coils

530 kgs.

FOR MORE DETAILS, REFER TO SECTION B9 - APPENDIX 'A' - BAUER

MANUAL KD-CFG88 DEF

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B4 STEERING GEAR MOTOR BRAKE UNIT DETAILS

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The spring loaded motor shaft disc brake, with AC/DC electromagnetic release, was supplied as an integral part of the steering motor unit, to the following specification.

TECHNICAL DATA

MANUFACTURER

BRAKE MODEL NUMBER

YEAR BUILT

HOLDING TORQUE

VOLTS/PHASE/HZ

Bauer

Type GBZ (S) 1 OOOWS lOONm

415/3/50 via rectifier to 170 VDC solenoid

FOR MORE DETAILS, REFER TO SECTION B9 - APPENDIX 'B' - BAUER

MANUAL BA 8791E

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B5 STEERING GEAR MOTOR FAN UNIT DETAILS

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A continuously running, electric motor driven cooling air fan was supplied as an integral part of the steering motor unit, providing forced cooling air through the body of the steering motor unit. The fan motor unit was supplied to the following specification.

TECHNICAL DATA

MANUFACTURER Bauer

MOTOR MODEL DNFK54/143L-BR-FB-D6A

DESIGN TYPE DNFK5

SERIAL NUMBERS 1649021-1

YEAR BUILT 1993

POWER 0.11 kW

FULL LOAD ROTOR SPEED 1600 RPM

VOLTS/PHASE/HZ 480/3/60

RATING 0.375 amps

POWER FACTOR 0.71

ENCLOSURE Totally enclosed, fan cooled to IP 65

INSULATION CLASS F

CONNECTIONS Direct on line

FOR MORE DETAILS, REFER TO SECTION B9 - APPENDIX 'C' - BAUER

MANUAL E69-DKN5

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B6 STEERING CONTROLS MAINTENANCE INSTRUCTIONS

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WARNING

DO NOT ATTEMPT TO START ANY MAINTENANCE WORK ON ANY

ELECTRICAL COMPONENT OF THE STEERING GEAR AND THRUSTER

ANCILLARIES UNTIL THE THRUSTER HAS BEEN LOCKED OUT FROM

REMOTE STARTING AND CONTROL, THE REQUIRED COMPONENT HAS

BEEN ISOLATED FROM THE POWER SUPPLY AND ALL NATIONAL AND

LOCAL REGULATIONS REGARDING WORK ON HIGH VOLTAGE

ELECTRICAL SYSTEMS HAVE BEEN COMPLIED WITH.

(i) STEERING GEAR MOTOR

The steering gear motor is fitted with "sealed for life" grease lubricated bearings and does not require further maintenance. The motor should be kept clean, with all terminal box covers in place and all cable connections tight. Should the motor require electrical repair or the motor end seals begin to leak, the motor must be split away from its gearbox and cleaned and re-greased in accordance with the instructions given in heading 6.2 of the STEERING MOTOR INSTRUCTION

MANUAL KD-CFG88 DEF.

(ii) STEERING GEAR HIGH REDUCTION RIGHT ANGLE GEARBOX

The steering gear right angle gearbox was supplied with its initial fill of 12 litres of VG 220 extreme pressure (AGMA 5EP) gear oil. The level of oil in this gearbox should be checked at not more than six monthly intervals, with the oil being changed after approximately 10,000 operating hours or three years, whichever is the sooner. The gearbox should be inspected and oil changed in accordance with the instructions given in heading 6.1 ofthe STEERING MOTOR INSTRUCTION

MANUAL KD-CFG88 DEF.

(iii) STEERING GEAR MOTOR BRAKE

For reliable operation, particularly where the brake is being used on a high frequency basis, of more than sixty braking operations per hour, it is essential that the brake unit be inspected and overhauled regularly, at not more than six monthly intervals. Regular inspection of the brake unit will give prior indication of the necessity of replacing the friction plates. The inspection and friction plate replacement should be carried out in accordance with the instructions given in heading 11 ofthe STEERING MOTOR BRAKE UNIT DETAILS BA 8791E.

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B7 THRUSTER ELECTRICAL ANCILLARIES

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The thruster is fitted with a pressure lubrication system for the rotor shaft external bearing assembly with an electric motor driven gear type lubricating oil pump, low and low low oil pressure switches and a 'K' type thermocouple for temperature protection of the upper thrust bearing. For full details regarding the lubrication system, refer to manual SECTION ONE heading A6.

(i) DROPS A ELECTRIC LUBRICATION OIL PUMP UNIT

The electrical motor driven gear type lubricating oil pump was supplied to the following specification:

TECHNICAL DATA

MANUFACTURER Drop sa

PUMP/MOTOR TYPE 3410111

CAPACITY 2 ltrs/min

YEAR BUILT 1993

MOTOR TYPE M63B4-A92

POWER 0.185 kW

VOL TS/PHASEIHZ 440/3/60

ENCLOSURE IP55

INSULATION CLASS F

SPEED 1728 rpm

POWER FACTOR 0.77

WEIGHT (APPROX.) 8.7 kgs.

(ii) DANFOSS LUBRICATION OIL PRESSURE SWITCH

The lubricating oil system pressure switches were supplied with factory preset pressure levels, to the following specification:

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TECHNICAL DATA

MANUFACTURER

TYPE

CODE NO.

SETTING RANGE

CONNECTIONS

SETTINGS

SECTION TWO PAGE 12

Danfoss

KPS 33

060-3104

0-3.5 bar

1/4 BSP internal

Low (switch 993/2) 1.5 bar for warning Low low (switch 993/3) 1.0 bar for optional shutdown

(iii) THRUST BEARING K TYPE THERMOCOUPLES

The lubricating oil system temperature protection is supplied by a 'K' type thermocouple probe, registering at the rotor shaft thrust bearing (Item 169) and supplied to the following specification:

MANUFACTURER

TYPE

Wainwright

'K' type thermocouple probe 1/8 BSP- HH 3/16" pocket type, to abutment 60 mm, stainless steel

(iv) THRUST DEFLECTOR POSITION POTENTIOMETER/TRANSMITTER

All thrust deflector position (THRUST DIRECTION) indications are provided by dual transmitter/ potentiometer units mounted to the top face of the steering gear motor and direct driven by a gear train assembly. The transmitter/potentiometers were supplied to the following specification.

MANUFACTURER

TYPE

SAKAE TSUSHIN KOGYO CO.

SFCP50A- 4517 single turn potentionrneter, film element, value 10 Kohm, 2 x 180° electrical connection.

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B8 SPARE PARTS IDENTIFICATION

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For precise identification of spare parts requirements, please refer to the following for a comprehensive spare parts listing.

(i) STEERING GEAR MOTOR AND REDUCTION GEARBOX

Pages 8 and 9 of BAUER STEERING MOTOR INSTRUCTION MANUAL -

APPENDIX 'A' .

(ii) STEERING GEAR MOTOR BRAKE UNIT

Page 2 ofBAUER DISC BRAKE OPERATING INSTRUCTIONS- APPENDIX 'B'.

(iii) STEERING GEAR MOTOR FAN UNIT

Pages 2 and 3 of BAUER STEERING GEAR MOTOR FAN UNIT DETAILS -

APPENDIX 'C' .

(v) STEERING GEAR ASSEMBLY. TRANSMITTER ASSEMBLY

Drg. Nos 4640WG and 5259 EGS.

ORDERING OF SPARE PARTS

Comprehensive constructional records are held of all equipment supplied.

Please quote thruster unit SERIAL NUMBER in all correspondence and, when ordering spare parts, please quote:

Equipment Description and Serial Number Drawing Number Part Number Modification Number Description ofltem Including Dimensions and Materials Quantity Required

DEVELOPMENT

Due to manufacturer's policy of continuous research and development, the Specification, Part Numbers, Drawings, Materials and Manufacturers of all components fitted in this section may be liable to alteration without notice.

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B9 DRAWINGS AND MANUALS

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STEERING MOTOR ASSEMBLY 4640WG

TRANSMITTER ASSEMBLY 5259EGS

APPENDIX 'A'

APPENDIX 'B'

APPENDIX 'C'

STEERING GEAR MOTOR/GEARBOX MANUAL

KD-CFG88 DEF

STEERING GEAR MOTOR BRAKE UNIT MANUAL

BA879IE

STEERING GEAR MOTOR FAN UNIT MANUAL

E69-DKN5

ELLIOTT TURBOMACIDNER Y LIMITED,

120 Thornycroft Industrial Estate, Worting Road, Basingstoke, Hampshire, RG21 1SD, ENGLAND.

Telephone No.

Telefax No.

Telex No.

(44) 1256 54334

(44) 1256 22464 858565