{"title":"Selden Hydraulic Assembly (Power Pack) — Owner's Manual","description":"\u003clink rel=\"stylesheet\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/om-manual-v2.css\"\u003e\u003cstyle\u003e.mpom .om-tbl.nw td+td{white-space:nowrap}.mpom details.om-dd{position:relative;margin:0}.mpom details.om-dd\u003esummary{list-style:none;cursor:pointer}.mpom details.om-dd\u003esummary::-webkit-details-marker{display:none}.mpom .om-dd-menu{position:absolute;left:0;top:calc(100% + 6px);min-width:100%;width:max-content;max-width:360px;background:#fff;border:1px solid #e3e5e8;border-radius:6px;box-shadow:0 8px 24px rgba(0,0,0,.14);z-index:30;padding:6px}.mpom .om-dd-menu a{display:flex;justify-content:space-between;align-items:center;gap:14px;padding:10px 12px;border-radius:4px;font-size:14px;font-weight:600;color:#2a2b2a!important;text-decoration:none!important}.mpom .om-dd-menu a:hover{background:#f5f6f8}.mpom .om-dd-menu small{font-weight:400;color:#5f6368;white-space:nowrap}\u003c\/style\u003e\u003cdiv class=\"mpom\"\u003e\n\u003cdiv class=\"om-head\"\u003e\n\u003cdiv\u003e\n\u003cspan class=\"om-tag\"\u003eOWNER'S MANUAL\u003c\/span\u003e\u003cp class=\"om-lead\"\u003eSelden hydraulic assemblies (power pacs) for hydraulic furling masts, hydraulic Furlex and the hydraulic boom outhaul: assembly numbers by installation, cable sizing, oil, filters, pressure settings and valve adjustment.\u003c\/p\u003e\n\u003cdiv class=\"om-box\"\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eDocument\u003c\/span\u003e\u003cb\u003eSelden Hydraulic Assembly (Power Pack) Owner's Manual\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\"\u003e\n\u003cspan\u003eFormat\u003c\/span\u003e\u003cb\u003ePDF · 60 pages · 16.9 MB\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-row\" style=\"border-bottom:0\"\u003e\n\u003cspan\u003eLanguage\u003c\/span\u003e\u003cb\u003eEnglish\u003c\/b\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-acts\"\u003e\u003cdetails class=\"om-dd\"\u003e\u003csummary class=\"om-btn dl\"\u003e\u003csvg viewbox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2.4\" stroke-linecap=\"round\" stroke-linejoin=\"round\"\u003e\u003cpath d=\"M12 4v11\"\u003e\u003c\/path\u003e\u003cpath d=\"m7 10 5 5 5-5\"\u003e\u003c\/path\u003e\u003cpath d=\"M5 20h14\"\u003e\u003c\/path\u003e\u003c\/svg\u003e Download PDF ▾\u003c\/summary\u003e\u003cdiv class=\"om-dd-menu\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Hydraulic-Assembly-Power-Pac-Owners-Manual.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003eOwner's Manual\u003c\/span\u003e\u003csmall\u003ePDF · 60 p.\u003c\/small\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Hydraulic-System-12-or-24-Volts.pdf\" target=\"_blank\" rel=\"noopener\"\u003e\u003cspan\u003e12 or 24 volts on board?\u003c\/span\u003e\u003csmall\u003ePDF · 1 p.\u003c\/small\u003e\u003c\/a\u003e\n\u003c\/div\u003e\u003c\/details\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-toc\"\u003e\n\u003ca href=\"#om-system\"\u003eSystem\u003c\/a\u003e\u003ca href=\"#om-select\"\u003eAssembly Numbers\u003c\/a\u003e\u003ca href=\"#om-install\"\u003eInstallation\u003c\/a\u003e\u003ca href=\"#om-oil\"\u003eOil \u0026amp; Filters\u003c\/a\u003e\u003ca href=\"#om-pressure\"\u003ePressure \u0026amp; Valves\u003c\/a\u003e\u003ca href=\"#om-volts\"\u003e12 or 24 V?\u003c\/a\u003e\u003ca href=\"#om-products\"\u003eProducts\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-img\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/files\/Selden-Hydraulic-Assembly-Power-Pac-Owners-Manual-Cover.png\" alt=\"Selden Hydraulic Assembly (Power Pack) — Owner's Manual\" loading=\"lazy\"\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-system\"\u003e\n\u003ch2 class=\"om-h\"\u003ePower Pacs \u0026amp; Valve Blocks\u003c\/h2\u003e\n\u003cp class=\"om-note\"\u003eDiscontinued model — documents and spare parts as printed.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA complete system: pump with motor and reservoir, valve block with a directional valve per function, and a control box. 12 and 24 volt versions. Designed for intermittent use, not continuous operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSingle power pac:\u003c\/b\u003e cylindrical tank, one function at a time, own return-line filter. Boom outhaul together with a furling motor needs two single units.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDouble power pac\u003c\/b\u003e (24 V only): two pumps in a rectangular tank with a built-in common return filter. Runs two functions at once, or both pumps in parallel for double flow to one large function (then add a single unit for a boom outhaul). Run individually, the left pump (1) drives the boom outhaul and the right pump (2) the Furlex etc.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eValve block for motors:\u003c\/b\u003e 2- or 3-function, aluminium with cartridge valves; blocks can be combined for more functions. \u003cb\u003eValve block for the boom outhaul:\u003c\/b\u003e adds an overcentre valve that holds outhaul pressure after the pump stops.\u003c\/li\u003e\n\u003cli\u003eBelow-deck hoses are optional; hoses from the application (e.g. furling mast motor) to the deck gland come with that application.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-select\"\u003e\n\u003ch2 class=\"om-h\"\u003eAssembly by Installation\u003c\/h2\u003e\n\u003cp\u003eOML 12.5, OMM20 etc. give the hydraulic motor size. Hose set: keel-stepped \/ deck-stepped mast. XXX = not available.\u003c\/p\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMast system \/ Furlex\u003c\/th\u003e\n\u003cth\u003eBoom outhaul\u003c\/th\u003e\n\u003cth\u003e12 V assy\u003c\/th\u003e\n\u003cth\u003e24 V assy\u003c\/th\u003e\n\u003cth\u003eHose set (keel \/ deck)\u003c\/th\u003e\n\u003cth\u003eCircuit diagram\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNo mast motor or Furlex\u003c\/td\u003e\n\u003ctd\u003eOuthaul only\u003c\/td\u003e\n\u003ctd\u003e550-139-41, 1.6 kW\u003c\/td\u003e\n\u003ctd\u003e550-141-41, 2 kW\u003c\/td\u003e\n\u003ctd\u003eX \/ Y\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFurling mast RB\/RC (OML12.5), Furlex 300 or 400 (OML12.5)\u003c\/td\u003e\n\u003ctd\u003eNo outhaul\u003c\/td\u003e\n\u003ctd\u003e550-140-01, 3 kW\u003c\/td\u003e\n\u003ctd\u003e550-141-01, 2 kW\u003c\/td\u003e\n\u003ctd\u003eA \/ B\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWith outhaul\u003c\/td\u003e\n\u003ctd\u003e550-140-11, 3+1.6 kw\u003c\/td\u003e\n\u003ctd\u003e550-141-11, 2+2 kW\u003c\/td\u003e\n\u003ctd\u003eA+X \/ B+Y\u003c\/td\u003e\n\u003ctd\u003e1+2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWith outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-143-11, (2+2) kW\u003c\/td\u003e\n\u003ctd\u003eC \/ D\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFurling mast RB\/RC (OML12.5), Furlex 300 and 400 (OML12.5)\u003c\/td\u003e\n\u003ctd\u003eNo outhaul\u003c\/td\u003e\n\u003ctd\u003e550-140-21, 3 kW\u003c\/td\u003e\n\u003ctd\u003e550-141-21, 2 kW\u003c\/td\u003e\n\u003ctd\u003eA \/ B\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWith outhaul\u003c\/td\u003e\n\u003ctd\u003e550-140-31, 3+1.6 kW\u003c\/td\u003e\n\u003ctd\u003e550-141-31, 2+2 kW\u003c\/td\u003e\n\u003ctd\u003eA+X \/ B+Y\u003c\/td\u003e\n\u003ctd\u003e1+2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWith outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-143-31, (2+2) kW\u003c\/td\u003e\n\u003ctd\u003eC \/ D\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFurling mast RD (OML12.5), Furlex 300 or 400 (OML12.5)\u003c\/td\u003e\n\u003ctd\u003eNo outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-142-01, 3 kW\u003c\/td\u003e\n\u003ctd\u003eA \/ B\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWith outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-142-11, 3+2 kW\u003c\/td\u003e\n\u003ctd\u003eA+X \/ B+Y\u003c\/td\u003e\n\u003ctd\u003e1+2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWith outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-149-11, (3+2) kW\u003c\/td\u003e\n\u003ctd\u003eC \/ D\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFurling mast RD (OML12.5), Furlex 300 and 400 (OML12.5)\u003c\/td\u003e\n\u003ctd\u003eNo outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-142-21, 3 kW\u003c\/td\u003e\n\u003ctd\u003eA \/ B\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWith outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-142-31, 3+2 kW\u003c\/td\u003e\n\u003ctd\u003eA+X \/ B+Y\u003c\/td\u003e\n\u003ctd\u003e1+2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWith outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-149-31, (3+2) kW\u003c\/td\u003e\n\u003ctd\u003eC \/ D\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFurling mast RD (OML20), Furlex 500 (OMM20)\u003c\/td\u003e\n\u003ctd\u003eNo outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-143-01, (2+2) kW\u003c\/td\u003e\n\u003ctd\u003eE \/ F\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWith outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-143-41, (2+2)+2 kW\u003c\/td\u003e\n\u003ctd\u003eE+X \/ F+Y\u003c\/td\u003e\n\u003ctd\u003e1+4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFurling mast RD (OML20), Furlex 400 and 500 (OMM20)\u003c\/td\u003e\n\u003ctd\u003eNo outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-143-21, (2+2) kW\u003c\/td\u003e\n\u003ctd\u003eE \/ F\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eWith outhaul\u003c\/td\u003e\n\u003ctd\u003eXXX\u003c\/td\u003e\n\u003ctd\u003e550-143-51, (2+2)+2 kW\u003c\/td\u003e\n\u003ctd\u003eE+X \/ F+Y\u003c\/td\u003e\n\u003ctd\u003e1+4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cdiv style=\"height:16px\"\u003e\u003c\/div\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eMotor \/ tank\u003c\/th\u003e\n\u003cth\u003eWeight excl. oil (kg)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12V 1,6 kW \/ 9l\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e12V 3 kW \/ 9l\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e24V 2 kW \/ 9l\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e24V 3 kW \/ 9l\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e24V 2+2 kW \/ 16l\u003c\/td\u003e\n\u003ctd\u003e37\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e24V 2+3 kW \/ 16l\u003c\/td\u003e\n\u003ctd\u003e43\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003eChecklist per installation: power pac(s) (check 12\/24V; one filter unit per single pac, built-in filter on the double), valve unit(s) for motors and \/ or boom outhaul, four dampers per power pac incl. 8 M8 nuts \u0026amp; washers, control box with 2 relays per function, manual 595-922-E.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-install\"\u003e\n\u003ch2 class=\"om-h\"\u003eInstallation\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBoth electrical and hydraulic systems should be professionally installed. Protect all units from moisture and physical damage; give the power pac ventilation (the motor gets hot) and access for oil, filter and pressure valve.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eButtons:\u003c\/b\u003e mount the two OUT buttons together and the two IN buttons together (e.g. pedestal: OUT starboard, IN port) – outhaul and furling mast are separate systems run together.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eControl box:\u003c\/b\u003e close to the valve unit, fed from the panel via switch and fuses; height including lid = 100 mm; changeover switch set to separate on installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSingle pac:\u003c\/b\u003e steel tank, horizontal (fore and aft) or vertical; max recommended fill 9 litres (9.5 litres horizontal); drain plug diagonally opposite the filler. \u003cb\u003eDouble pac:\u003c\/b\u003e aluminium tank on four rubber pads with M8 screws, max 14 litres; filter, filler, dipstick and venting-hose connection on top.\u003c\/li\u003e\n\u003cli\u003eFit the venting hose (roughly 0.6 m) to discharge as high above the tank as possible, with no water trap. Use the rubber pads to cut noise.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMotor cable:\u003c\/b\u003e crimp terminals for M8 screws. Minimum cable area 50 mm2 (12V) \/ 35 mm2 (24V).\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eSingle-pac filter:\u003c\/b\u003e spin-on, on the return line; two M8 holes (cc40mm); note the flow arrows.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eHoses below deck (optional):\u003c\/b\u003e min bend radius 125 mm for 3\/8\" hose, 175 mm for ½\". Never twist a hose – 25° of twist cuts its life by 90%. Clip hoses every 400-500 mm with rubber clips, keep them off sharp edges, plug all open ends. If buying hoses elsewhere, use SAE 100R7\/DIN 24951. If a length is hard to measure, order the hose slightly long with one end open and have it crimped locally.\u003c\/li\u003e\n\u003cli\u003eNever run the assembly without oil in the tank.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"om-h3\"\u003eCable sizing\u003c\/h3\u003e\n\u003cp\u003eLmax = (cable area × voltage drop) \/ (0.017 × current), where Lmax = positive + negative cable length battery – pump (m), voltage drop 0.6V (12V) \/ 1.2V (24V) = 5%, 0.017 for copper.\u003c\/p\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003eUnit\u003c\/th\u003e\n\u003cth\u003eMax working pressure (bar)\u003c\/th\u003e\n\u003cth\u003eMax current (A)\u003c\/th\u003e\n\u003cth\u003eCable area (mm²) → Lmax 2 × (battery – pump) (m)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1,6 kW 12V\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e250\u003c\/td\u003e\n\u003ctd\u003e50 → 7 · 70 → 10 · 90 → 12,5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1,6 kW 12V\u003c\/td\u003e\n\u003ctd\u003e130\u003c\/td\u003e\n\u003ctd\u003e300\u003c\/td\u003e\n\u003ctd\u003e50 → 6 · 70 → 8 · 90 → 10,5 · 120 → 14\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e1,6 kW 12V\u003c\/td\u003e\n\u003ctd\u003e160\u003c\/td\u003e\n\u003ctd\u003e350\u003c\/td\u003e\n\u003ctd\u003e50 → 5 · 70 → 7 · 90 → 10 · 120 → 12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3 kW 12V\u003c\/td\u003e\n\u003ctd\u003e140\u003c\/td\u003e\n\u003ctd\u003e320\u003c\/td\u003e\n\u003ctd\u003e50 → 5,5 · 70 → 7,5 · 90 → 10 · 120 → 13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 kW 24V\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e120\u003c\/td\u003e\n\u003ctd\u003e35 → 20,5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 kW 24V\u003c\/td\u003e\n\u003ctd\u003e130\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e35 → 16,5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 kW 24V\u003c\/td\u003e\n\u003ctd\u003e140\u003c\/td\u003e\n\u003ctd\u003e160\u003c\/td\u003e\n\u003ctd\u003e35 → 15 · 50 → 22\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e2 kW 24V\u003c\/td\u003e\n\u003ctd\u003e160\u003c\/td\u003e\n\u003ctd\u003e175\u003c\/td\u003e\n\u003ctd\u003e35 → 14 · 50 → 20 · 70 → 28\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3 kW 24V\u003c\/td\u003e\n\u003ctd\u003e140\u003c\/td\u003e\n\u003ctd\u003e150\u003c\/td\u003e\n\u003ctd\u003e35 → 16,5 · 50 → 23,5\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block om-grid2\" id=\"om-oil\"\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eHydraulic Oil\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eHigh-quality mineral hydraulic oil (same type as in the boom outhaul cylinder, see manual 595-091). Never mix oil types, e.g. mineral with bio-oil.\u003c\/li\u003e\n\u003cli\u003eWith a boom outhaul, check the level with the cylinder compressed (BOOM OUT); the rod volume is 0.8 to 1.3 litres depending on stroke (1800-2600 mm).\u003c\/li\u003e\n\u003cli\u003eRemove the venting hose first. Double pac dipstick marked at 14 litres; single pac separate dipstick marked at 9 litres – don't screw the dipstick down.\u003c\/li\u003e\n\u003cli\u003eSingle pac horizontal: oil to the top of the pump housing (a drop on the dipstick tip, or check with a torch) = 9.5 litres.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch2 class=\"om-h\"\u003eOil Filters\u003c\/h2\u003e\n\u003cdiv class=\"om-tbl nw\"\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003cth\u003ePart No.\u003c\/th\u003e\n\u003cth\u003eReplacement element\u003c\/th\u003e\n\u003cth\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e550-135\u003c\/td\u003e\n\u003ctd\u003eSingle power pac, return-line spin-on (original IKRON HE K45-20.135-AS-FG 010)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e550-152\u003c\/td\u003e\n\u003ctd\u003eDouble power pac, tank-mounted (original IKRON HE K02-10.129-AS-FG 010)\u003c\/td\u003e\n\u003ctd\u003e\u003ca class=\"om-ask\" href=\"\/pages\/contact\"\u003eAsk us to source it →\u003c\/a\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cul\u003e\n\u003cli\u003eBoth: micro-fibre glass, 10 µm absolute, bypass opens at 1.7 bar pressure drop. Single max 7 bar, double max 8 bar working pressure.\u003c\/li\u003e\n\u003cli\u003eReplace every fourth year (double pac also when its manometer reads more than 1.5 bar). Double pac: undo the three Allen screws, lift the spring-loaded lid (1) and keep the bypass valve (2) for the new element (3).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-pressure\"\u003e\n\u003ch2 class=\"om-h\"\u003ePressure Relief \u0026amp; Valve Settings\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eEach manifold carries a manometer and a pressure relief (system \/ working pressure) valve. If load rises too far (e.g. furling the genoa without easing the sheet) it opens and returns oil to the tank.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eBoom outhaul unit:\u003c\/b\u003e relief valve set to between 100 and 160 bar depending on boom size; adjustment is in the boom outhaul manual 595-091.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMotor unit (Furlex etc):\u003c\/b\u003e must always be set to 140 bar. At 140 bar the pac runs 3-5 minutes before the motor thermal cut-out trips (resets automatically when cool); in heavy weather furling can reach 130-140 bar. Let the motor cool between furling operations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFurling-mast port relief valve (5):\u003c\/b\u003e RC and RD set to max (140 bar working pressure); RB set to 120 bar. To change it: hold screw (b), loosen nut (a); anti-clockwise reduces, clockwise increases; re-lock. There is no manometer on this valve – check at the A- or B-port, e.g. with a gauge on the mast-motor quick coupling.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFlow control valves\u003c\/b\u003e (motor block, 1–4): delivered at maximum. Hold screw (b), loosen nut (a); clockwise reduces flow, counter-clockwise increases. Heavy restriction causes high power losses. Built-in check valve lets oil return freely.\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eDirectional valves\u003c\/b\u003e have LED-lit solenoids and manual buttons at each end to release residual pressure. Boom outhaul valves: overcentre 33.2, flow control 34.1 \u0026amp; 34.2 (optional), emergency 35 (red knob, clockwise closed, hand-tight), non-return 33.1 (do not adjust).\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 class=\"om-h3\"\u003eSetting the 140 bar relief valve (motor unit)\u003c\/h3\u003e\n\u003col\u003e\n\u003cli\u003eDisconnect the Furlex1 hose quick couplings at the deck gland and cap them.\u003c\/li\u003e\n\u003cli\u003ePress FURLEX IN for 2 to 3 seconds – all oil goes over the relief valve.\u003c\/li\u003e\n\u003cli\u003eOne person reads the manometer while another presses the button.\u003c\/li\u003e\n\u003cli\u003eRemove cap nut (1) of adjusting screw (2) (a little oil may leak; sealing washer 3) and loosen locking nut (4).\u003c\/li\u003e\n\u003cli\u003eAdjust: clockwise (+) increases, anti-clockwise (-) decreases. If too high from the start, back off a few turns, re-test, then come up to the value.\u003c\/li\u003e\n\u003cli\u003eTighten locking nut (4), refit sealing washer (3) and cap nut (1) to seal.\u003c\/li\u003e\n\u003cli\u003eRe-check on the manometer.\u003c\/li\u003e\n\u003cli\u003eReconnect Furlex1 at the deck gland.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp class=\"om-note\"\u003eA higher relief setting means a higher maximum current, which sets the cable size.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"om-block\" id=\"om-volts\"\u003e\n\u003ch2 class=\"om-h\"\u003e12 or 24 Volts on Board?\u003c\/h2\u003e\n\u003cp\u003eSelden recommends 24 volt DC for hydraulic rig systems because reefing large sails needs a lot of power. Example: a 40 to 50-foot boat's hydraulic pump has a 3-kilowatt motor; P = U x I, so at 3,000W the current is 250 amperes at 12 volts but 125 amperes at 24 volts. High current is a safety risk – have a trained technician install it.\u003c\/p\u003e\n\u003cdiv class=\"om-grid2\"\u003e\n\u003cdiv\u003e\n\u003ch3 class=\"om-h3\"\u003e24 V advantages\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eGreater safety.\u003c\/li\u003e\n\u003cli\u003eThinner cables.\u003c\/li\u003e\n\u003cli\u003eMuch lower power loss through poor connections.\u003c\/li\u003e\n\u003cli\u003eHydraulic, starter and generator motors more efficient, with longer operating periods.\u003c\/li\u003e\n\u003cli\u003eLess brush wear.\u003c\/li\u003e\n\u003cli\u003eLess sensitive to voltage drop.\u003c\/li\u003e\n\u003cli\u003eFridges, water pumps, heat exchangers, chargers etc. usually available in 24 volts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv\u003e\n\u003ch3 class=\"om-h3\"\u003eDisadvantages\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e24 volt starters and generators are not usually standard on smaller diesels.\u003c\/li\u003e\n\u003cli\u003eInstruments are often 12 volt only: use a 24\/12 volts DC converter – never take 12V from just one battery of a 24V bank (uneven loading).\u003c\/li\u003e\n\u003cli\u003eBattery size doesn't change: the energy requirement is the same.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp class=\"om-note\"\u003eNeed a part that isn't listed? \u003ca href=\"\/pages\/contact\"\u003eAsk us to source it\u003c\/a\u003e and quote the part number from the PDF.\u003c\/p\u003e\n\u003ch2 class=\"om-h\" id=\"om-products\"\u003eProducts in this Manual\u003c\/h2\u003e\n\u003c\/div\u003e","products":[],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0879\/4908\/2930\/collections\/Selden-Hydraulic-Assembly-Power-Pac-Owners-Manual-Cover.png?v=1792517394","url":"https:\/\/www.mauripro.com\/collections\/owners-manuals-selden-hydraulic-power-pack.oembed","provider":"MAURIPRO Sailing","version":"1.0","type":"link"}