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OWNER'S MANUAL

Specifications, dimensions, hull and hatch installation, PPC wiring, cable and fuse sizing, operation and seasonal maintenance for Sleipner Side-Power SR Pro (SRP and SRP-IP) DC electric proportional retractable thrusters, SRP80 to SRVP300.

DocumentSleipner SR Pro (SRP) Retractable Thrusters Installation & User Manual
FormatPDF · 16 pages · 1.7 MB
LanguageEnglish
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Owner's ManualPDF · 16 p.Installation manual – SRL/V-P80, SRL/V-P100PDF · 36 p.Installation manual – SRL/V-P130, SRL/V-P170, SRL/V-P210, SRL/V-P250PDF · 36 p.Installation manual – SRP-V300PDF · 28 p.
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Sleipner SR Pro (SRP) Retractable Thrusters — Installation & User Manual

Product Specifications

Model Voltage Thrust at 12V / 24V Thrust at 10.5V / 21V Power Weight
SRP80, SR L&V P 80 12V or 24V 96 kg / 212 lbs 80 kg / 176 lbs 4.4kw / 6hp 31 kg / 68 lbs
SRP100, SR L&V P 100 12V or 24V 116 kg / 256 lbs 100 kg / 220 lbs 6.3kw / 8.4hp 44 kg / 97 lbs
SR L&V P 130 12V or 24V 160 kg / 352 lbs 130 kg / 284 lbs 6.5kw / 8.7hp 82 kg / 181 lbs
SR L&V P 170 24V 210 kg / 462 lbs 170 kg / 374 lbs 8kw / 11.8hp 88 kg / 194 lbs
SRVP 210 24V 250 kg / 550 lbs 210 kg / 462 lbs 10kw / 13.15hp 112 kg / 247 lbs
SRVP 250 24V 300 kg / 661 lbs 250 kg / 551 lbs 11.4kw / 15.5hp 117 kg / 257 lbs
SRVP 300 24V or 48V 350 kg / 749 lbs 300 kg / 661 lbs 15kw / 20hp 120 kg / 265 lbs
  • All are S2 motors rated for a 2 - 3 min. duty cycle at 20°C ambient; the maximum continuous run time is approximately 3 minutes and a built-in thermal cut-off stops an overheating motor (auto-reset when it cools). Plan your manoeuvres accordingly.
  • Thrust ratings are at the voltage measured at the motor terminals while running.
  • DC motors produce some carbon dust (IP versions are enclosed): keep storage separate from the thruster compartment.
  • Lithium batteries can supply a higher voltage than ON/OFF thrusters are rated for, which shortens run time and damages the thruster; operating outside the ratings voids the warranty.
  • SRP-V300 (2021 manual): typical boat size 22m - 30m / 72ft - 100ft, 5-blade skewback "Q-prop" propeller, panels shut off automatically 6 minutes after last use and the thruster retracts when the panel is turned off.

The SRP-L&V80 installation manual prints the weight as "31 kg / 61 lbs" (as printed); the user manual gives 31 kg / 68 lbs.

Installation Dimensions

Model Tunnel ID Housing L W (flange & housing) H (+H motor) Min. flange height MH Twist ring depth RD Tunnel / flange width RW / MW
SRL80 12V / 24V 185 mm 561 mm (+L 230 / 245) 359 mm 243 (+93 / +96) mm 62 mm 276 mm 195 / 257 mm
SRL100 12V / 24V 185 mm 561 mm (+L 287 / 281) 359 mm 243 (+129 / +128) mm 62 mm 276 mm 195 / 257 mm
SRV80 12V / 24V 185 mm 561 mm 359 mm 244 / 243 (+193 / +184) mm 62 mm 276 mm 195 / 257 mm
SRV100 12V / 24V 185 mm 561 mm 359 mm 243 (+226 / +221) mm 62 mm 276 mm 195 / 257 mm
SRL130 12V / 24V 250 mm 688 mm (+L 264 / 269) 480 mm 389 (+49 / +30) mm 97 mm 374 mm 348 / 420 mm
SRL170 24V 250 mm 688 mm (+L 289) 480 mm 389 (+58) mm 97 mm 374 mm 348 / 420 mm
SRV130 12V / 24V 250 mm 688 mm 480 mm 389 (+104 / +110) mm 97 mm 374 mm 348 / 420 mm
SRV170 / SRV210 24V 250 mm 688 mm 480 mm 389 (+128 / +211) mm 97 mm 374 mm 348 / 420 mm
SRV250 24V 300 mm 843 mm 580 mm 452 (+172) mm 115 mm 454 mm 415 / 480 mm
SRV300 24V 300 mm 843 mm 580 mm 452 (+172) mm 115 mm 445 mm 415 / 480 mm

Minimum depth of the tunnel below the waterline: 185mm for SR 80 & 100, 250mm for SR 130 & 210, 300mm for SR 250 & 300 (water depth WD 185 mm in the SRP-L&V80/100 tables). Allow 100mm clear space round the unit.

Position, Flange and Cut-out

  • Hatch opens towards the bow. Bow units on the keel centre line, as far forward as the depth requirement allows; stern units may be offset to clear stern drives, propellers, trim tabs and rudders.
  • Sandwich hulls: remove the inner laminate and core at least 100mm round the flange and reinforce with bonding layers.
  • Trim the SRF flange to the hull curvature without cutting the length edge; cut the hatch at 45º on three sides and 30º on the bow face after drilling corner holes at 45º.
  • Keep the red spacer block in place until the hatch installation tells you to remove it (older SRP-V300: wooden safety part above the propeller).
  • Pre-check with DIP switch 4 ON (service mode): DOWN/UP to confirm the hatch opens clear of the hull and closes flush with pressure on the contact edges; grind the flange or wedge up its aft end as needed. The hatch/hull contact edges are the mechanical end stop.

Bonding and Assembly

  • Grind gelcoat back round the opening and on the flange, glue the flange in position, laminate inside and out with compatible resin, coat. SRF flanges and SR(P)80/100 housings are polyester.
  • Housing on the flange with MS polymer on the flange surface; bolts 4Nm - 2,9lb/ft in a cross pattern (on SR L&V 80/100 some bolts go in from underneath to clear the position sensor and actuator bracket).
  • Hatch: drill four 11mm holes, countersink, glue on the twist rings, bolt up with lock nuts, fill the hull/hatch gap and coat.
  • Motor to housing: 33Nm (24lb/ft). More than 30 degrees off vertical needs separate motor support (never support on the motor cap). Shaft coupling halves approx. 2mm apart.
  • Do not gel-coat the tunnel inside (room only for primer and two coats of anti-fouling); anti-foul the inside of the retract housing but not the drive shaft.

PPC, Cables and Fuses

  • Circuit: battery → fuse → main switch → Proportional Power Controller (PPC) → motor. Fuse and an easily accessible manual or automatic main switch close to the positive battery terminal; slow-blow fuse able to hold the current draw for at least 5 minutes.
  • The PPC (SRP-V300 manual) is bulkhead mounted in a dry, ventilated space with at least 200mm head clearance, 150mm below and 100mm round the rest of the casing.
  • Motor lugs: M8 nut max 13Nm (9.59lb/ft), M10 nut max 23Nm (16.96lb/ft); lug faces back to back, spring washer on the outside, never washers between lugs. SRP-V300 manual: 18Nm (13.28lb/ft).
  • With the main switch off, check with an ohmmeter that neither motor terminal connects to the motor flange.
  • Retract controller: 7-31 VDC, less than 1.5 Watt standby, 40 Amp fuse, minimum 11.7 Volt (12 Volt thruster) or 23.4 Volt (24 Volt thruster) at B+/B- to deploy, -10°C to 60°C.
Model size System Nominal current Min. battery CCA Rec. fuse Rec. cable <7m / 15-21m total + & -
80/185T 12 V 530 A DIN: 550, SAE: 1045, EN: 940 ANL 400 70 / 2 x 95 mm²
80/185T 24 V 280 A DIN: 300, SAE:570, EN: 520 ANL 250 35 / 70 mm²
100/185T 12 V 740 A DIN: 750, SAE: 1425, EN: 1320 ANL 500 95 / NA
100/185T 24 V 340 A DIN: 400, SAE: 760, EN: 680 ANL 325 50 / 95 mm²
130 12V 800 A DIN: 750, SAE: 760, EN: 680 ANL 500 95 / 2 x 120 mm²
130 24V 350 A DIN: 400, SAE: 760, EN: 680 ANL 325 50 / 95 mm²
170 24V 550 A DIN: 560, SAE: 1064, EN: 940 ANL 400 70 / 120 mm²
210 24V 500 A DIN: 560, SAE: 1064, EN: 940 ANL 400-500 70 / 120 mm²
250 24V 610-670 A DIN: 700, SAE: 1330, EN: 1170 ANL 500 70 / 2 x 95 mm²
300/300 48V 400-450A DIN: 400, SAE: 760, EN: 680 ANL 325 70 / 95 mm²

Values from the installation manuals; full min./recommended cable tables in mm² and AWG up to 36-45m total length are in the PDFs. The actual voltage at the motor sets rpm and thrust: bigger cables and stronger batteries give better results. Some CCA figures differ between manuals (as printed).

Retract Controller Set-up

  • Drive shaft alignment: deploy from the panel and check the actuator lever arm pointer lines up with the red mark on the nut. If not, use Service Mode and UP/DOWN to align with the calibration mark, then Sensor Calibration Mode and hold UP and DOWN until STATUS turns green, then Operation Mode.
  • DIP 1 OFF with two actuators, ON with one; DIP 2 ON only for P8 type actuators (a rattling noise when the hatch closes means it should be OFF).
  • LEDs: continuous red = over-temp, communication, relay, low voltage, position sensor, actuator power or unit failure; red fast blinking = invalid DIP setting; red short flash every 2 seconds = shaft not calibrated; continuous green = normal or service mode; flashing green = no S-Link communication.

Operation and Troubleshooting

  • Know where the main battery switch is and keep the engine running while using the thruster. Never store sails, ropes or gear in the thruster compartment. Never open an Ignition Protected assembly.
  • Main power on, then the panel; proportional thrust follows joystick travel. For manoeuvring and docking only, at no more than 4 knots.
  • The retract hatch closes with high force: take care when working around it.
  • Will not start or runs one way only: main switch on, fuses, batteries and connections. Does not stop when released, or pulsing action (solenoid failure or lock-in): hit the main switch and contact a Sleipner distributor.
  • Reduced thrust: clean growth from propeller, gear house and tunnel; check battery condition, cable size and connections.

Seasonal Maintenance

  • In the water: cables and area clean and dry, connections tight, batteries good, bolts secure, no leaks.
  • Out of the water: propellers and tunnel undamaged and secure; anti-foul propeller and gear leg (never anodes, seals or shaft); replace anodes every season or at half corroded, with thread glue on the screw.
  • Lubricate the retract drive shaft and check for excess movement; check the hatch is firmly secured.
  • Not SR80/SR100: replace the break-away rings if the actuator moves more than 3 mm by hand (keep the factory spares on board) and check the twist rings for cracks.
  • Not 300mm models: check the rubber element yearly and replace it every 2nd year. Older SRV300 models (before year 2020): check the oil reservoir.
  • Do not anti-foul or clean the SR80/SR100 retract mechanism area with chemicals, hot water or a pressure washer.

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

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