Installation manual & user guide
Contents
1. N 135mm 5 31 2 options for hose connector on pump outlet Water inlet assembly 210 mm 8 27 440 mm 17 32 190 mm 3 54 76mm 3 280 mm 11 M 100x100mm 3 94 x 3 94 100x220mm 3 94 x 8 66 P 242 00 Straight pump outlet P 222 00 90 pump outlet Connect with flexible hose to inlet on pump unit Max hose length 1 m 3 3 ft a 344 52 13 15 370 14 6 ss al 201 7 9 i 165 5 6 5 356 5 14 196 7 7 144 5 7 10 5 1 2 100 3 94 110 4 3 Holland Marine Parts 19 wl Technical Specifications JT 90 Pump head in position II 76mm 3 76mm 3 o N N 135mm 5 31 eo 100x220mm 3 94 x 8 66 P 242 00 Straight pump outlet P 222 00 90 pump outlet 2 options for hose connector on pump outlet Water inlet assembly Connect with flexible hose to inlet on pump unit Max hose length 1 m 3 3 ft 280 mm 11 210 mm 8 27 190 mm 3 54 440 mm 17 32 Inlet 100 3 94 5 300 11 8 ea 201 7 9 _ 356 5 14 196 7 7 144 5 7 30 5 1 2 20 Holland Marine Parts 2 Technical Specifications 3 way valve JT 30 JT 50 Holland N Marine Parts D 153 5mm 62. Make sure all parts of the clamp slide into place when tightening the nuts Make sure clamps are well placed and thoroughly fastened To avoid corrosion apply e g Protective spray to the clamp Vasaline After first operation of the system check that clamps are tight Annually inspect the clamps for their integrity Holland Marine Parts 25 A Position of pump unit and water inlet combination It is important to select a position for the pump unit at which it is located under the waterline The centrifugal pump does not self prime If the pump is placed close to the waterline or in case of fast moving vessels is can be necessary to install the optional Electrical air valve that will help to rapidly prime the pump See page 45 46 In addition to select the optimum position of the pump unit Holland Marine Parts advises to place suitable battery s directly next to the pump unit in order to keep the battery cabling as short as possible The jet thruster uses a lot of electrical energy in a short period of time Short and correct battery cabling is preferred in this situation e Place the water inlet in the hull of the vessel Diameter in hull 90mm 3 hole saw e Exterior of hull Flange of water inlet I 302 00 e Interior of hull PP sliding ring nut Water inlet SS 316 Please note Keep a maximum distance of 1 metre 3 3 ft between the bushing of the pump and bushing on the ball valve side 1 metre 3 3 ft hose is provided for
3. 189mm 7 44 160mm 6 29 114mm 4 49 10mm 0 4 140mm 5 51 D 9mm 0 35 55mm 2 16 Holland Marine Parts 21 Technical Specifications 3 way valve JT 70 JT 90 275mm 10 83 7 o QR NE 3 E NN Nl 22 mm 8 94 ae 188mm 7 4 10mm 0 4 D 9mm 0 35 166mm 6 54 oF 22 Holland Marine Parts Installing the Jet Thruster Single All orifices are located below the water line Extra attention needs to be given to securing and installing the included hose clamps around the pressure hoses The included hose clamps are robust and of high quality Holland Marine Parts recommends using the included hose clamps The installation of different hose clamps than the ones included with the system is at your own risk Mechanical Installation Keep the following points in mind during the mechanical installation A position of pump unit and water inlet combination see page 26 B position of 3 way valve see page 28 C position of nozzles see page 29 33 Note The Jet Thruster is most efficient when the connections between system components made with the included pressure hoses are as short as possible Place the pump unit and the 3 way valve as close to the nozzles as possible to achieve this Hose clamps Installation kit provides 1 hose clamp per bushing Pay attention when installing the provided M llenbach two shell hose clamps
4. Do not remove any parts of the system before all valves have been closed Close all valves when you are not aboard Leave system maintenance to specialists Disconnect the battery cables when conducting maintenance and in the event of long term absence e g when the vessel is not being used in winter The hoses are under pressure in an active system high pressure hoses are to be attached to the vessel to prevent movement along e g sharp edges Protect the high pressure hoses from heat penetration sunlight chemicals Avoid physical contact with the water inlet when the system is active Avoid physical contact swimmers with the nozzles and the water expelled by an active system Danger Protect pump unit and 3 way valve from petrol fumes Provide sufficient ventilation Ignition proof covers are available 6 Holland Marine Parts 4 T User Guide Jet Thruster Holland Marine Parts JT 30 JT 50 JT 70 JT 90 Your vessel is equipped with a Holland Marine Parts electric Jet Thruster For the safe and correct operation of this system Holland Marine Parts recommends every user to carefully study this operating guide Familiarise yourself with the system by trying it out in various weather conditions The windage and draught as well as the weight of your vessel are factors contribut ing to how well the system operates Warnings e The Jet Thruster is not a replacement of the main controls but assists with the
5. 44 Holland Marine Parts em Installing the electrical air valve Operation The pump head of the Jet Thruster system must be installed under the water line in order to prime this centrifugal pump In some limited cases of fast moving vessels a vacuum can be produced when the nozzles rise above the waterline and the in take remains in the water The suction under the fast moving hull will retract the present water from the Jet Thruster system When the boat slows down or stops the water will automatically flow into the system due to the fact that the pump head and nozzles are under the waterline However it is possible that an air pocket can be trapped in the pump head preventing the pump from self priming In this unique situation an Electrical Air valve can be installed this will release the present air from the pump head allowing the pump to rapidly prime Giving the operator immediate thrust pressure for maneuvering i ji ul ny fi Hose connector for 8 mm hose A 12v 100 mm 4 90 mm 3 How to install the Electrical Air Valve A Remove the winterization plug located on the pump outlet fitting Install the provided hose connector Make sure to install the Electrical Air Valve above the waterline Apply the supplied flexible hose and hose clamps between the pump unit and Electrical Air Valve mo S Apply the supplied flexible hose from the Air valve to outside of
6. Preface Holland Marine Parts keeps you moving Thank you very much for your purchase of the Jet Thruster This electric system greatly simplifies the manoeuvring of your vessel The extensive development process of the Jet Thruster guarantees a complete and innovative system that will make operating your boat a breeze The Jet Thruster systems by Holland Marine Parts are made of quality materials For the correct and safe operation of the Jet Thruster you have purchased we recommend having it professionally installed A professional installation taking into account the recommendations in this installation user manual guarantees a well working system This installation manual has been prepared with the utmost care If you experience installation trouble please contact your Jet Thruster dealer We point out that some vessels require adjustments to assure their integrity For all your questions about this please contact your shipbuilder Holland Marine Parts 4 Holland Marine Parts 4 en e e Warranty provisions On all its newly manufactured products Holland Marine Parts provides quality assurance regarding their proper operation both with regard to the material and the work done including latent defects for a period of 24 months after the invoice date to the first receiver In case of defects in material and or defects caused by inadequate work done as covered under warranty by Holland Ma rine Parts the relevant part or th
7. V 101 00 Do not disconnect remove or change the standard provided cables from the 3 way valve and the relays unit This will void the warranty Step 1 Select position for valve and relays unit Protect the electrical components from water It is preferred to place the 3 way valve relay unit to be accessible for inspection Step 2 Pull the provided neoprene cable 5 x 1 5mm from the position where the valve is located to the actuator support on top of the pump unit If necessary the cable can be extended with similar cable Cable type HO7RNF Please note do not combine different colors in the pairs This can damage the system Step 3 Pull a cable 5 x 2 5mm 14 AWG from the joystick to the actuator support on to connect the joy stick with the AB AB screw connectors on the joystick and on the Actuator support Step 4 Attach 1 circuit of this at step 3 mentioned 5 x 2 5 mm 14 AWG cable 1 x 2 5mm 14 AWG from the primary side of Joystick to the screw connector on the actuator support Holland Marine Parts 53 qi Connection on the contactor support See appendices at page 59 63 for detailed information to connect the valves to the contactor support Combine the following wires from both valves and connect to the screw connectors on the contactor support Brown pair to position 18 on relay Green pair to E on screw connector Black pair to G minus on screw connector Blue and grey from valve A Blue
8. in N i e e EN E E x Ig MM S M E eo Inlet _ 603 23 7 100 3 94 Be mo e Y oO in gt e T o oo co amp i i BEN mn co o 2 lt i ZO S9 e CN I 188 7 4 115 4 53 175 6 9 Holland Marine Parts 17 qi Technical Specifications JT 70 76mm 3 76mm 3 Pump head in position II o N N 135mm 5 31 eo 100x100mm 3 94 x 3 94 100x220mm 3 94 x 8 66 P 242 00 Straight pump outlet P 222 00 90 pump outlet 2 options for hose connector Water inlet assembly on pump outlet Connect with flexible hose to inlet on pump unit Max hose length 1 m 3 3 ft LN e in O e _ E ES x O z N Ss m9 lt N E E E o O pou EEE A 440 mm 17 32 Inlet 603 23 7 tit gt li ml o g diuo o y d m in ai HH Y e Lr Ti oO co a LA 188 7 4 115 45 gt x 334 13 15 100 3 9 i si LA S e Y o om T EN e T y eo _ 175 69 ES eo oO Cv 18 Holland Marine Parts 2 Technical Specifications JT 90 Pump head in position I 76mm 3 o N E
9. on the unit into place The front of the IP Cover points towards the pump outlet as stipulated in this picture Continue with the electrical installation according to diagram See appendix of this installation manual to correctly install the cabeling There are special recesses casted in the IP Cover Use the recesses in the base of the cover to place glands and create an airtight connection at all times Drill a 76mm or 3 inch hole in both recesses One in the base and one in the top cover and install the plastic hose connector Make absolutely sure you create a airtight connection Apply suitable hose on both hose connectors to enable cooling air run in and out The JT 30 does not have a built in ventilator Use a 12v external engine room ventilator to enable cool air running thru the IP Cover The JT50 is equipped with an internal ventilator This ventilator will create an airflow during operation The ventilator will suck in cool air The air intake has to be installed at the bottom 76mm 3inch hose connector en will expel the air from the top hose connector Do not remove the layer of foam from the inside of the top IP Cover This foam enables airflow in side the cover After all installation is finished place the top cover the gasket and thoroughly connect the top cover with the base cover by tightening the provides screws Holland Marine Parts 39 wi e es 40 Holland Marine Parts 4 e e e e m Electric
10. the vessel In case of a technical failure water that comes from the pump unit when the Jet Thruster system is engaged will be pumped outside the vessel Follow diagram complete the electrical installation Holland Marine Parts 45 wl Water to 3 way valve nozzle Look for F amp G label air leading out of vessel Example of a contactor support on pump unit Blue ground Brown 12V F Yellow green not in use Position of electrical valve must be above water line Flexible hose 8mm Picture of contactor support is example Select applied contactor support and position of F 12V and G Ground according to the pump unit the installation is applied for See appendices for additional information Pump unit Remove plug from pump outlet to connect flexible hose 46 Holland Marine Parts 4 e em Electrical diagram for connecting Single and Dual joystick control Step 1 For the installation of the joystick front plate drill a hole 70 mm 2 3 4 in diameter 2x for combi joystick overlapping Step 2 Connect the cable red of the joystick with fuse 15A to the 12V ignition switch or a control panel and connect the ground wire green yellow to the ground of the ship s circuit Do not use the dedicated battery that powers the electrical motor of the pump unit to power the control circuit of the Jet Thruster A The joystick operates on 12V f
11. this purpose 1 312 00 Please note Exterior of hull Apply a polymer Marine Sealant on the flange of Water Inlet See page 34 for more information about installing the thru hull parts Correct installation Water intake with Polymer marine sealant or Water intake only with provided rubber sealing Preferable do not use the rubber sealing in combination with polymer adhesive If the nut of the Water inlet is tightened this rubber seal can slide away from its position causing a bad sealing of the Water Inlet See Exploded views in this manual for correct installation order of all components ii Danger Protect pump unit and 3 way valve s from petrol fumes Provide sufficient ventilation Ignition proof covers are available for JT 30 JT 50 Vertical In rare conditions it might be possible that the pump unit of the Jet Thruster does not prime If you notice a high rpm from the pump unit and no thrust force do not attempt to prime the pump unit by continuous activating the system In this situation the Electrical air valve from Holland Marine Parts should be installed to release the air from the pump head This will prime the pump Do not run the pump unit without the presence of water Standard configuration 3 90 degree elbow BSP SS 316 provided in installation kit Option in case of steep hull or problems with alignment Available as option Female Female 3 BSP 45 elbow I 354 00 Male Female 3 BSP 45 elbow I 36
12. to 1 A combined with A from Joystick Grey to 1 B combined with B from Joystick Blue and grey from valve B Blue to 2 A combined with A from Joystick Grey to 2 B combined with B from Joystick Please note If the thrust force is to the opposite side than selected with the joystick switch A and B pairs to alter the direction Please note Only switch the A and B within this pair Make sure To protect the relay unit from water Close lit of the unit 54 Holland Marine Parts e se Jet Thruster Combi How to adjust the Valve time relays Note Any valve that closes rapidly at the end of a pipeline will cause fluid hamer To avoid this fluid hammer in the Jet Thruster Combi system both valves are equipped with a time relay that keeps the valve open after the operator let go of the joystick Built up water pressure and the velocity of the water will be released before the valve will be automatically closed by the system Every Jet Thruster Combi installation is different and therefore the timer relays in the valve relay unit have to be custom adjusted The factory preset is 2 seconds Use a small screwdriver to make adjustments to the time relay that is in the Relay Unit Box which is attached to the Valve Note there has to be a minimum of 1 second Do not adjust between the bow and stern valve Factory Valve closing delay preset One valve 2 seconds other valve 3 seconds If adjustments are made make sure to ext
13. 4 00 Can be ordered additionally water intake side Cw D SS 316 26 Holland Marine Parts 2 a To avoid resonance e Do not bring pump unit into contact with the interior e The engine must be attached to the vessel by means of the engine bracket To do this use the three recesses in the engine bracket m8 5 16 Lateral placement For lateral placement attach a straight hose connector rubber seal to the pump head P 140 00 gt ve 2 7 51 mm 3 76 mm For longitudinal placement attach the 90 hose connector rubber seal to the pump head Longitudinal placement 3 76 mm Holland Marine Parts 27 B Position of 3 way valve CAUTION Prevent physical injury When electrically turning the plunger present in the valve body considerable force occurs Prevent any body parts from getting trapped during installation Please note By opening the lit of the valve the watertight seal and bearing is broken Opening the valve will void your warranty e Place of the 3 way valve as close to the nozzles as possible e Mount the 3 way valve to the vessel Use the recesses at the bottom of the valve body for this m8 Possition not necessary horizontal e Allways use the protective cover to protect the electricalparts e See page 43 48 for the Jet Thruster Single electrical installation e See page 51 55 for the Jet Thruster Combi electrical installation Jet T
14. A from the pump unit to the negative pole of battery 1 Step 2 Place the series parallel circuit Make a bridge Connect the ground cable at the bottom pole on the two pole side to the bottom pole on the four pole side This cable diameter should be sufficient for a 12V charging current two pole side four pole side Holland Marine Parts 65 Step 3 Connect the other bottom pole four pole side with the negative pole of battery 1 This cable diameter should be sufficient for a 12V charging current Step 4 Connect the ground cable negative battery 1 with the ground cable of the vessel This cable diameter should be sufficient for a 12V charging current Step 5 Connect the bottom pole two pole side with the ground cable of battery 2 Use a cable type of a sufficient diameter This cable conducts 24V and needs to be able to handle the motor power Step 6 Make a bridge Connect the positive cable to the two pole side top pole to the top pole on the four pole side This cable diameter should be sufficient for a 12V charging current 66 Holland Marine Parts 4 Step 7 Connect the top pole two pole side to the positive of battery 1 Use a cable type of a sufficient diameter This cable conducts 24V and needs to be able to handle the motor power Step 8 Connect the top pole four pole side to the positive of battery 2 This cable diameter should be sufficient for a 12V char
15. BOW shifted position possible as seen in diagram to increase leverage arm Top side of nozzle 10cm 4 below waterline Keep in mind that when the nozzles rise above the waterline it is possible by the powerful Jet of water expelled by the Jet Thruster inconvenience or damage may occur Theoretically After correct installation one can look through the nozzles from port to starboard Use the included 45 degree elbows in order to place the nozzles as far as possible to the front In case of application as a stern Jet or in case of Jet Thruster Combi place the system as far as possible to the stern If 90 Transom nozzles are installed in the stern the system will be most efficient gm lt 90 flanged treaded transom nozzle e g under swiming platform i Flanged treaded outlet or weldeable nozzle Principle for optimum installation e Nozzles at 90 angle to the centre line of the vessel e Nozzles horizontal e Top side of nozzle no less than 10cm 4 below the waterline deeper is possible but consider to place the nozzles further to the front Shifted position possible in case of narrow bow In case of a blund bow concider an increased nozzle angle Choose the correct nozzle angle 09 259 359 459 559 Nozzle can be rotated to achieve optimum position Illustration of shifted and crossed nozzle position Venturi in nozzle do not damage 30 Holland Marin
16. Manufactured by Holland Marine Parts B V Jet Thruster EM DOCK YOUR BOAT EASILY Installation manual amp user guide www jetthruster com JET THRUSTER Bow HOLLAND MARINE PARTS Jet Thrusters JT 30 JT 50 JT 70 JT 90 All our products are manufactured according to CE regulations HOLLAND We keep the rights to change descriptions graphs or statements MARINE PARTS which are required for technical development of our Jet Thruster systems AA ean J Alo Moon den taina We leep you Moving N el vc X A m d 2 Holland Marine Parts 4 m e e Table of Contents Preface 4 Warranty Provisions 5 Safety 6 User Guide Jet Thruster Holland Marine Parts 7 Troubleshooting 8 Winterising 9 Jet Thruster pump units 10 Technical Specifications 13 Installing the Jet Thruster Single 25 Nozzle positions and installation options 31 Installing the Jet Thruster vertical 36 IP protective cover for gasoline engine areas 39 Electrical Installation Jet Thruster Single 43 Installing the electrical air valve 45 Installing the Jet Thruster Combi 51 Electrical Installation Jet Thruster Combi 53 Jet Thrusters Appendix A Electrical diagram 59 Appendix B Exploded view 60 Appendix C Electrical installation 62 Series parallel switch 64 Connecting the series parallel circuit 65 Test rapport information about installation 69 Notes 70 Project info 71 k Holland Marine Parts 3 b
17. S 50 00 I JTC 50 00 a JTS 70 00 5 JTC 70 00 U JTS 90 00 1 NEO mos I Lj E E JT 30 JT 50 JT 30 JT 50 JT 70 JT 90 JT 70 JT 90 pos 1 pos 2 pos 1 pos 2 Serial No Serial No Serial No Serial No Holland Marine Parts 69 w 70 Holland Marine Parts 4 o e om Project info DE NER RETE T E T T T T ee ee eee eee BON A D D avs a Cd No de BE a O E a D DR D oo eee Date of installation de e a a ect co oc de ses Date of system activation 33 39 29 4 95 5 i Ba Marne a ERR A ad d ded dod PR RR OEE tease Date OK Name Signature stamp Holland Marine Parts 71 All our products are manufactured according to CE regulations HOLLAND We keep the rights to change descriptions graphs or statements MARINE PARTS which are required for technical development of our Jet Thruster systems
18. Specifications JT 30 Pump head in position I N O W P 142 00 Straight pump outlet P 122 00 90 pump outlet 2 options for hose connector on pump outlet Water inlet assembly Connect with flexible hose to inlet on pump unit Max hose length 1 m 3 3 ft Dis me es mme mm 250 mm 9 84 180 mm 7 08 Inlet 304A 12 80 mm 3 14 440 mm 17 71 21242 175 767 146 5 75 115 4 53 578 69 3 1 D11 0 43 110 4 33 01254 12 92 s Holland Marine Parts 13 wi 51mm 2 51mm 2 Technical Specifications JT 30 Pump head in position II to N W CO 105mm 4 13 2 options for hose connector P 142 00 Straight pump outlet P 122 00 90 pump outlet on pump outlet Water inlet assembly Connect with flexible hose to inlet on pump unit Max hose length 1 m 3 3 ft Le me mm o 250 mm 9 84 180 mm 7 08 Inlet 80 mm 3 14 D 304 11 97 440 mm 17 71 140 15 5 312 12 3 302 5 11 9 367 14 45 146 5 75 56 2 2 442 17 4 115 45 D11 0 43 367 14 45 110 4 33 14 Holland Marine Parts 51mm 2 Technical Specifications JT 50 Pump head in position I to N W CO P 142 00 Straight pump outlet P 122 00 90 pump outlet Water inlet assembly 2 options for h
19. al Installation Jet Thruster Single Holland Marine Parts recomments Optima Batteries O P T I MAR BATTERIES THE ULTIMATE POWER SOURCE LOVE lt MMOLE O P T 1 M A Optima battery YT S 4 2L Optima battery YT S 5 5L JT 30 12V 1x YTS 4 2L 55Ah JT 50 12V 1xYTS5 5L 75Ah Veit our website JT 50 24V 2xYTS5 5L 75Ah www jetthruster com JT 70 24V 2x TS 5 0L 75Ah for additional information JT 90 24V 4 x YT S 5 5L 75Ah Holland Marine Parts 43 The electrical installation of the Jet Thruster is very simple In the appendices you will find the schematic diagrams of the wiring to be applied The electric motor of the Jet Thruster generates a lot of power in a short period of time It is recommended you connect a separate battery to the system It is necessary to make the connection between this battery and the system as short as possible Use appropriate battery cables and connecting material for this at all times The system must be equipped with the included main fuse which must be installed in the battery positive cable You can use the power supply for the joystick from an existing dashboard or ignition switch This needs to be secured with the included 15A fuse For safety reasons the Jet Thruster should be provided with a suitable main switch not included The joystick operates on 12V For vessels with a 24V installation a DC DC converter must be applied Cabling Jet Thruster Single Preferably a neoprene cable
20. atically the connection will break if the Jet Thruster stops running Connect F and G from the Series Parallel Switch with F and G at the pump unit Use a 2x 2 5mm2 cable Contactor support on pump unit Note If the Series Parallel Switch does not engages the Jet Thruster will run at 12V This implicates that less thrust force will be provided by the pump unit 2x 2 5mm 14 AWG Contactor Batt 1 Alternator Batt 1 Alternator i att 2 Alternator Alternator Battery1 Battery1 Battery2 Battery2 Series parallel switch 7 64 Holland Marine Parts Connecting the series parallel circuit A Attention Calculate the correct diameter for the battery cables to be applied Use a circuit that is AS SHORT AS POSSIBLE to prevent significant voltage loss The voltage drop should be no more than 5 This means the batteries are to be placed as close as possible to the pump unit of the Jet Thruster Holland Marine Parts advises the use of the Optima YellowTop battery This battery has a sizeable cold cranking amperage CCA and is suitable for deep discharge Please visit our website for more information about this battery Slide the battery pole caps along the cables Two pole side before attaching the battery terminals to the cables This is no longer possible afterwards Four pole side Step 1 Connect the ground cable marked
21. ave to be installed Remove spilled sealant immediately Use acetone to remove Sikaflex 291i stains 10 Installing the water intake The position of the pump unit that has to be installed under the water line determines the location of the water intake Make sure the position of the water intake and the components like the ball valve elbow hose connector hoses and hose clamp are not in conflict with available space before a hole is made Drill a 90mm 3 hole smoothen edges 11 Repeat installation 12 Thoroughly secure process like suggested the flange treaded at point 7 water intake by fasten the provided 3 nut Holland Marine Parts 35 qi Installing the Jet Thruster Vertical The setup of the vertial Jet Thruster pump unit is ideal for engine rooms with less draft and few space available The pumpunit is mounted directly on the water intake The intake itself can be shut and if necessary the pumpunit can be removed for maintanence or other purposes cover optional P 263 00 I 605 00 I 606 00 I 607 00 1 608 00 1 609 00 Pump head Flange withangle position 0 I 605 00 pre assambled at factory Butterfly valve 1 603 00 Guide ring I 601 00 Waterintake I 600 00 Procedure to install the water intake combination A Be sure to apply the IP protective cover in gasoline areas Make sure there is enough space available to place this cover See page 39 Sel
22. ball valve Step 7 Remove the compressed air nipple A Step 8 Replace the blind plug or airvalve In addition you can drain the pumphouse therefore remove draining plug for draining the pumphouse JT 30 JT 50 JT 70 JT 90 Holland Marine Parts 9 Jet Thruster pump units Note Thread sizes of all Jet Thruster com ponents in Whitworth Pipe Thread DIN ISO 228 BSP DIN 259 British Standard Pipe JT 30 66 thrust LBS Force 30 Kgf Voltage DC 12V E motor capacity kW 3kW Current 376A Master fuse 425A Recommended battery capacity 12V Battery cable Water inlet Water outlet 1 x Optima Yellow Top 55Ah 1m gt 50mm 3ft gt 1 0 AWG 1x 90 mm 3 Nozzle 36mm 1 26 Pressure hose diameter 2 51 mm Weight pump 29kg 64LB Pump unit LxWxH 442x425x330 340 mm Ixwxh 17 4x16 73x13 13 38 inch 3 Way valve LxWxH 240x160x189 mm LxWxH 9 44x6 29x7 44 inch JT 50 88 thrust LBS Force 40 Kgf Voltage DC 12V E motor capacity kW 6kw Current 730A Master fuse 850A Recommended battery capacity 12V 1 x Optima Yellow Top 75Ah Battery cable 1m 70mm 3ft gt 2 0 AWG Water inlet 1x 90 mm 3 Water outlet Nozzle 36mm 1 26 Pressure hose diameter 2 51 mm Weight pump 36 kg 80 LB Pump unit LxWxH 495 5x425x330 360 mm LxWxH 19 x16 73x13 14 17 inch 3 Way valve LxWxH 240x160x189 mm LxWxH 9 44x6 29x7 44 inch JT 70 154 thrust LBS Force 70 Kgf Volta
23. bout the complete installation of the Jet Thruster Remarks about safety are accompanied by this symbol In rare conditions it might be possible that the pump unit of the Jet Thruster does not prime If you notice a high rpm from the pump unit and no thrust force do not attempt to prime the pump unit by continuous activating the system In this situ ation the Electrical air valve from Holland Marine Parts should be installed to release the air from the pump head This will prime the pump Do not run the pump unit without the presence of water Follow all instructions in this manual All users of the system must be aware of the mandatory safety regulations as explained in this manual Preferably leave installation and maintenance of the system to a dealer authorised by Holland Marine Parts Use appropriate tools for the installation and maintenance of the Jet Thruster Provide the Jet Thruster seperate battery s Place the battery s as close to the pump unit of the Jet Thruster as possible Always use a Holland Marine Parts control panel Do not touch any moving parts of an active system Parts such as the DC pump motor may become hot do not touch them and do not cover them under any circumstances Avoid having flammable products near the DC pump motor Do not conduct any inspection or maintenance of the system when it is active Do not close any valves of an active system The system is located beneath the water line
24. d and makes a good contact with the vessel plating Inside the vessel Make sure the vessel plating has a leveled smooth and clean surface where the guide ring 1 601 00 is placed over the flange and bolds of the water intake Check strength of the vessel plating If necessary locally reinforce the position of the Water Intake to ensure the strength and integrity of the vessels hull In case of doubt consult a professional boat builder Slide the PVC guide ring on the part of the flange and bolds that are in the boat If necessary thoroughly smoothen the inside of the hull to create a flat surface on to which the PVC flange will be placed Apply Sikaflex 291i or 3M 5200 Marine Sealant on the side that contacts the vessel plating flange and bolds Make sure to provide an excellent waterproof connection Holland Marine Parts 37 Install the buttefly valve on top of the pvc ring Make sure to check the opening direction of the lever is not obstructed The valve has to be opened fully for a correctly functioning system Apply the provided SS316 support flanges 1 602 00 in a pattern accord ing to this picture Connect the butterfly valve with the parts that lay beneath it by fastening the 4 nuts DO NOT OVERTIGHTEN THE NUTS THIS WILL DAMANGE THE VALVE Only when the 4 flanges are correctly installed in the receses of the valve the pump unit can be removed when the boat is in the water Apply Sikaflex 291i or 3M 5200 marine sealan
25. e Parts 4 en em Nozzle positions and installation options Note The standard installation kit provides 1 x 2 45 elbow Additional points must be ordered separately I 361 00 1x 2 BSP 45 elbow to each nozzle 2 BSP m f SS316 1 Crossed nozzle position edes A 2 Horizontal shifted nozzle position 437 17 2 366 14 41 105 4 13 3 Vertical shifted and crossed nozzle position 323 12 72 100 3 94 s Holland Marine Parts 31 m 2 x 2 BSP 45 elbow to each nozzle 1 Crossed nozzle position 425 16 73 2 Horizontal shifted nozzle position 292 115 m N in ES 00 gt x 00 CN 280 11 3 Vertical shifted and crossed nozzle position 183 7 2 Y G e oo e o A col x 535 21 06 4 Inline direct opposite position 88 3 46 225 8 86 t El 32 Holland Marine Parts a Note Applying a 90 elbow results in 1096 loss of thrust force I 316 00 90 2 BSP m f elbow SS316 1x 2 BSP 90 elbow to each nozzle 1 Inline direct opposite position 445 17 52 _98 3 86 175 6 89 2 Horizontal shifted and crossed nozzle position 297 11 69 50 1 57 276 10 86 450 3 Vertical shifted and crossed
26. e whole device will be either repaired or replaced at the discretion Holland Marine Parts free of charge The warranty periods specified in the first paragraph are not extended by the implementation of repairs under warranty Any costs associated with travel transportation and installation and or disassembly with regard to repairs covered under warranty will be borne by the owner of that device Damage to the product caused by improper installation by intentional or unintentional misuse lack of maintenance normal wear and or repair by third parties without the written permission of Holland Marine Parts are not covered by warranty Holland Marine Parts shall under no circumstances be liable for any consequential damages of any nature whatsoever or howsoever caused by the part or the whole product covered by warranty by Holland Marine Parts Please note Exclusion of warranty The pump head of the pump unit and the gaskets on the 3 way valve are tested to be waterproof If they are opened removed damaged this will void all liability towards Holland Marine Parts in the occur rence of damage as a result of these actions In this manual the installation of the JT 30 JT 50 JT 70 and JT 90 in Single and Combi setup is explained Choose the installation procedure that applies to the system you have purchased Holland Marine Parts 5 wl Safety read this prior to installation or operation This installation manual provides advice a
27. ect optimum position for water intake 1 600 00 Make sure at least the pump head is below the waterline If this is not possible at the selected place of choice do not continue Outside of the vessel Before any holes are drilled make sure there is sufficient space inside the vessel to fit in all components Make sure the handle of the butterfly valve can be fully opened and closed The drill pattern of the water intake part is responsible for the final position and angle of the vertical mounted motor It s advisable to pre assemble all parts and fit the complete set in on the inside of the vessel Drilling pilot holes for the water intake flange in this particular case will ensure the motor is placed vertical after the water intake is correctly placed according to the pilot holes and the drill pattern of the water intake flange 36 Holland Marine Parts 4 Drill a 102mm 4inch hole in the vessel plating Drill 8x 12 5mm 1 2inch holes 600 00 Use the provided Drill pattern to correctly drill the required holes 604 00 Apply Sikaflex 291i of 3M 5200 polymer sealant to securely mount the Water intake I 600 00 and flange into the hole make sure to apply enough sealant on each part of the flange The polymer sealant provides if applied correctly a very strong seal If necessary smoothen the surface of vessel plating in order to provide a flat spot on which the flange will attach Make sure the Water Intake is well installe
28. eller System operates inverted Low battery voltage Series parallel does not activate system runs at 12V Press the switch Check fuse 15A behind joystick Check replace fuse Contact your dealer Leave engine to cool Check whether or not valves are closed Place pump unit inlet below water line Run engine in deep water until clean Contact your dealer Cabling fault Exchange A and B on the pump unit Charge batteries see electrical installation page 22 Check actual voltage at meter Check connections series parallel switch 8 Holland Marine Parts en e e Winterising Preferably have the system winterised by a specialist 2 51 mm Please note Frost can do a lot of damage if you fail to drain the system Use a compressor to remove the water present in the system by means of air pressure Please note Excessive pressure may damage the system Check the operating A pressure you use to pressurise the system with This operating pressure must not exceed 2 bar 30 psi 3 76 mm Step 1 Disconnect the cable from the battery Step 2 Close all valves Step 3 Remove the blind plug or air valve in the outlet A of the pumpunit Step 4 Screw a compressed air nipple in the outlet Step 5 Pressurise the system MAX 2 BAR 30 psi 3 76 mm Step 6 Open the ball valves one by one and close them the instant you hear a bubbling sound Repeat this procedure for every
29. end by increasing the delay for every valve by Adjust in steps ONE second accordingly of ONE second Note Do NOT make adjustments to the similar relay on the pump unit Do not adjust Valve relay unit time relay Note Rapidly changing the thrust force from port to starboard or vice versa will cause fluid hammer in the Jet Thruster Combi system The possible time to switch thrust to order side without fluid hammer will be different in every installation The operator of the Jet Thruster system has to be familiarized with the actual time to switch without hearing the fluid hammer When dual operated Bow and Stern Thruster at the same time a fluid hammer can occur if one of the joysticks will be let go or during the operation one valve is turned in opposite direction The fluid hammer will be less because the water pres sure is divided between bow and stern The operator has to familiarize himself with this phenomena Holland Marine Parts 55 si 56 Holland Marine Parts 2 e e m e si 58 Holland Marine Parts e e m Series parallel switch The Series Parallel Switch creates a temporary 24V environment out of two 12V batteries to power the DC motor from the pump unit The switch itself operates at 12V The moment the Jet Thruster system activates 12V power activates the coil that makes the switch connects the battery cables Autom
30. execution of difficult manoeuvres e Familiarise yourself with the way your vessel responds to your operation of the system e The electric motor produces heat The thermal protection limits continuous operation to about 4 minutes e The water inlet is located on the bottom of your vessel Inquire about the exact location of the water inlet grating e Prevent the system from sucking in large amounts of sand and dirt Do not activate it when you have less than 30cm 12 of ground clearance e The nozzles of the Jet Thruster are located beneath the water line Do not activate the system and do not operate the Jet Thruster when there are people animals or vulnerable items in the vicinity of your vessel and the inlet and orifices e Close all the valves when you are not aboard Inquire about the local regulations in ports with regard to closing the valves Operation You operate the Jet Thruster by activating the system on the front plate of the control panel by pressing the button A This switch is illuminated in blue when the system is active Operate the Jet Thruster by moving the joystick s B left or right moving the bow or stern to port or starboard respectively When equipped with push buttons the same procedure applies the push buttons being illuminated in green or red light JET c THOSE TER Duration of activation Prevent the use of many short pulses Instead move your vessel by means of pulses that last a few seconds The e
31. fficiency of the system is determined in part by the battery capacity present The overheating protection will activate when the system is active for an extended period of time After the engine has cooled sufficiently this protection is removed The cooling time is determined in part by the ambient temperature Jet Thruster Combi The control panel is equipped with two joysticks or push buttons You can move sideways by operating both push buttons for bow and stern at the same time You can manoeuvre the vessel around the centre of rotation by manoeuvring the bow to port and the stern to starboard or the other way around s Holland Marine Parts 7 wi Troubleshooting If the system is not functioning IT C KE CON T 12 24 2 2 3 1 32 32 3 4 4 1 4 2 4 3 System is not working power indicator off System is not working power indicator off System is not working power indicator on System is not working power indicator on Engine running no activity Engine running no activity Engine running no activity Engine running no activity Engine running no activity System is not efficient enough Not enough power JT 50 24V JT 70 and JT 90 Joystick not receiving power Joystick not receiving power Battery dead or main fuse broken Damaged relay Overheating protection activated Valves closed Engine does not draw water Polluted system shallow water Damaged imp
32. ge DC 24V E motor capacity kW 11kW Current 655A Master fuse 710A 2x 355A Recommended battery capacity 12V 2 x Optima Yellow Top 75Ah Battery cable 1m gt 95mm 3ft gt 3 0 AWG Water inlet 1x0 4 Water outlet Nozzle 50mm Pressure hose diameter 3 76 mm Weight pump 43 kg 95 LB Pump unit LxWxH 540x405x355 mm LxWxH 21 25x15 95x14 inch 3 Way valve LxWxH 280x235x230 mm LxWxH 11x9 25x9 inch Force Voltage DC E motor capacity kW Current Master fuse Recommended battery capacity 12V Battery cable Water inlet Water outlet Pressure hose diameter Weight pump Pump unit 3 Way valve JT 90 Force Voltage DC E motor capacity kW Current Master fuse Recommended battery capacity 12V Battery cable Water inlet Water outlet Pressure hose diameter Weight pump Pump unit 3 Way valve 198 thrust LBS JT 50 110 thrust LBS 24V 50 Kgf 24V 6kW 380A 425A 2 x Optima Yellow Top 75Ah 1m gt 50mm 3ft gt 1 0 AWG 1 x 90 mm 3 Nozzle 36mm 1 26 2 51 mm 34 kg 75 LB LxWxH 495 5x425x330 360 mm LxWxH 19 x16 73x13 14 17 inch LxWxH 240x160x189 mm LxWxH 9 44x6 29x7 44 inch 90 Kgf 24V 15 5kW 980A 1000A 4 x Optima Yellow Top 75Ah 1m gt 120mm 3ft gt 4 0 AWG 1x 4 Nozzle 50mm 3 76 mm 49 kg 130 LB LxWxH 675x381x365 mm LxWxH 26 57x15x14 37 inch LxWxH 280x235x230 mm LxWxH 11x9 25x9 inch 51mm 2 Technical
33. ging current Step 9 Place a reliable master switch as close between the batteries and the pump unit as possible Use a cable type of a sufficient diameter This cable conducts 24V and needs to be able to handle the motor power Step 10 Connect the master switch to the pump unit with as short a cable as possible and place this cable in the main fuse box Do not place the fuse yet Holland Marine Parts 67 gt Step 11 Connect the charging cable sufficient diameter from alternator battery charger charging current distributor to the positive pole of battery 1 Step 12 Check if all connections are firmly fixed and the battery poles are equipped with battery pole caps and have been greased Step 13 Place the fuse and attach the fuse holder s protective cover Step 14 Connect the control cable of the series parallel circuit to the F and G ports Screw connectors at the pump unit contactor support Step 15 Check if the series parallel circuit is switched on when controlling the Jet Thruster and measure the voltage at the ground cable of the motor cable A and the positive pole at the contactor of the pump unit Fs This should be 24V 68 Holland Marine Parts 2 Jet Thruster valve test rapport 3 way valve serial number V 100 00 I V 200 00 I V 101 00 I V 202 00 I Jet Thruster test rapport A OK Testdate HMP No Name Signature JTS 30 00 JTC 30 00 JT
34. he pump to connect the series parallel switch page 64 Step 7 Connect the insulated battery cables of the right type and place the main fuse and a suitable main switch 254 00 255 00 JT 30 JT 50 24V JT 50 12V JT 70 JT 90 JT 30 JT 50 gt 1x 425A JT 50 gt 2 x 425A JT 70 gt 2x 355A JT 90 gt 2 x 500A 48 Holland Marine Parts 4 d Installing the Jet Thruster Combi The Jet Thruster Combi works with one centrally placed pump unit and two 3 way valves for steering the bow and stern of your vessel What is distinctive about the Combi is that the water pressure from the pump unit is divided in the direction of the bow and stern The manifold that is placed on the pump unit ensures this division In contrast to the 3 way valves of the Single edition of the Jet Thruster the 3 way valves of the Dual are turned to a closed position whenever the system is not active When the system is activated water flows under pressure to the selected and opened 3 way valve The advantage of the Jet Thruster Dual is that both 3 way valves can be operated simultaneously and in different positions This offers you the capability of operating the bow and stern independently of each other with one system See appendices at page 59 63 for a schematic view of installation Keep the following points in mind during the mechanical installation A Position of pump unit and water inlet combination B Position of 3 way valves
35. hruster Combi Dirt that builds up in the system will be flushed out during use The function of the 3 way valve allows for an amount of water flowing through even when the valve is not in use In a system that is in operation water flowing out will be observed in all of the nozzles This is normal and indicates that the system is functioning correctly 28 Holland Marine Parts 4 C Position of the nozzles e Based on the type of hull you have chosen a certain nozzle type Select this nozzle type and the corresponding installation instructions from the below scheme Please note Nozzles are equipped with an internal Venturi Do not damage or remove this constriction Steel 318 00 65 mm 2 59 cut off remaining length SS316 I 320 00 60 mm 2 36 cut off remaining length Aluminium I 322 00 60 mm 2 36 cut off remaining length ETT NNNNNN E L7 7 RM nn 324 00 60 mm 2 36 no finishing needed 25 l 330 00 60mm 2 36 nofinishing needed 35 333 00 60 mm 2 36 nofinishing needed 459 l 336 00 60 mm 2 36 nofinishing needed 5o 339 00 60 mm 2 36 nofinishing needed Flange threaded 90 transom l 342 00 60mm 2 36 nofinishing needed nozzle 0 nozzle 25 nozzle 35 nozzle 45 nozzle 55 transom 90 nozzle aluminium nozzle SS316 nozzle steel s Holland Marine Parts 29 The Jet Thruster will be most effective when the nozzles are placed AS FAR AS POSSIBLE TO THE FRONT OF THE
36. ion of the bow and stern the thrust generated by the pump unit is divided over the bow and stern Partly due to this you can manoeuvre the ship laterally or around the ship s pivot point However the thrust per opened outlet is reduced during the simultaneous operation of the two 3 way valves present Familiarise yourself with the reaction speed of the system 52 Holland Marine Parts 4 Electrical installation Jet Thruster Combi See appendices at page 59 63 for a schematic representation of the electrical connections The electrical connection of the Jet Thruster Dual includes two different phases A 12V or 24V power supply for the electric motor of the pump unit depending on specific Jet Thruster system In the case of a 12 Volt vessel s circuit the 24 Volt Jet Thruster systems JT 50 JT 70 and JT 90 should be provided with 2 batteries and a series parallel switch see p 64 See pages 64 68 for the correct connection method of this switch B Connection and power supply of the control and operation of the Combi system Take note the power supply for the relay unit is 12V Do not use a battery that powers the motor of the pump unit to power the control circuit of the Jet Thruster The battery that powers the Jet Thruster should be used for this purpose only The 3 way valves for the Jet Thruster Combi are standard equipped with a relays unit and 10m 31 ft neoprene cable 5 x 1 5mm 16 AWG Valve relay unit
37. nozzle position 247 972 _ 99 5 3 92 7713 03 175 6 89 Holland Marine Parts 33 d Installing the nozzles and water intake In case of steel or aluminum vessel plating weldable nozzles are available For polyester and wooden vessel plating flange treaded nozzles are available 1 Place vessel horizontal Select optimum position for nozzle As far to the front of bow or stern as possible top side of nozzle 10cm 4 below water line Nozzle horizontal and in 90 angle to the heart line of the vessel Note Not placing the nozzles as far to the front or aft as possible reduces the overall effectiveness of the system Laser equipment can assist selecting optimum position and determine if vessel is placed perfectly horizontal 2 Make sure the position of both nozzles and the components like the ball valves elbows hose connector hoses and hose clamp are not in conflict with available space before a hole is made Drill a pilot hole Keep drill horizontal Nozzles can be positioned shifted horizontal and vertical in case of a narrow bow Hoses can be crossed in order to place the nozzles further to the front of the bow See image at point 8 for visible explanation 3 4 Use a 60mm 2 hole saw to drill the holes for the nozzle Keep drill horizontal and in 90 position to the vessel s heart line see illustration page 30 5 Smoothen edges 6 Fi
38. or vessels with a 24V installation a dc dc converter must be applied Step 3 JT Single Pull one cable 3x2 5mm 14 AWG from the joystick to the actuator support on the pump unit Connect this cable with the screw connectors on both the actuator support on the joystick and the pump unit marked A and B Jet Thruster Combi 5x2 5mm 14 AWG Connect the primary side of the green Elfin joystick contact with the srew connector marked with at the contactor support on the pump unit Note Incase of Dual helm setup repeat step 1 3 to install a second Joystick control gt The wire pairs AB from Joystick 1 and AB from Joystick 2 have to be connected with the AB connection to Contactor support at the Pump unit Primary side of joystick Connect with positive screw at pump unit screw terminal marked with Primary side of joystick Connect with positive screw g gt mm 3 37 at pump unit screw terminal 4 7 e marked with YET THRUS TER 128 mm 5 85 mm 3 3 Holland Marine Parts 47 wi Step 4 Install the joystick in the recess with the included bracket and assembly nuts Screw installation nuts on hand tight Step 5 JT Single Pull one cable 3x2 5mm 14 AWG from the pump unit to the 3 way valve and connect it to the screw connectors marked C D and E 3 way valve Jet Thruster Single Step 6 JT 50 24V JT 70 and JT 90 Use the connectors F and G on t
39. ose connector Connect with flexible hose to inlet on pump unit Max hose length 1 m 3 3 ft on pump outlet 250 mm 9 84 180 mm 7 08 lt gt 80 mm 3 14 440 mm 17 71 Inlet H 349 13 7 160 6 3 D 304 12 0 d T PN 109 5 4 3 240 9 4 _ 146 5 7 80 3 1 115 45 Holland Marine Parts 15 51mm 2 Technical Specifications JT 50 Pump head in position II to N W CO P 142 00 Straight pump outlet P 122 00 90 pump outlet Water inlet assembly Connect with flexible hose to inlet on pump unit Max hose length 1 m 3 3 ft 2 options for hose connector on pump outlet a uem mm om 250 mm 9 84 90 mm 2 54 80 mm 3 14 gt 440 mm 17 71 Inlet O mM _ 9 OX NO CN o o no 109 5 4 3 240 9 4 146 59 7 64 5 2 5 60 2 4 367 14 4 co 00 N e 115 4 5 16 Holland Marine Parts 4 gt Technical Specifications JT 70 76mm 3 76mm 3 Pump head in position I o N E N 135mm 5 31 M 100x100mm 3 94 x 3 94 100x220mm 3 94 x 8 66 P 242 00 Straight pump outlet P 222 00 90 pump outlet 2 options for hose connector on pump outlet Water inlet assembly Connect with flexible hose to inlet on pump unit Max hose length 1 m 3 3 ft
40. see page 28 C Position of nozzles see page 29 33 Holland Marine Parts 51 A Position of pump unit and water inlet combination Choose a central position for the pump unit for example in the midship where you need to take the water inlet combination into account Very important Pump head must be installed under the waterline From the pump outlet you connect a pressure hose to the 3 way valve in the stern To make the most efficient use of the system it is best to use the shortest possible hose lengths If you need to make bends these should be as fluid as possible Prevent sharp bends Every bend increases resistance and reduces efficiency 2 way 90 Hose connector mounted on pump unit Two positions possible e g Stern Four directional positions possible on pump unit Water intake Pump outlet 90 degrees in combination with 3 way hose connector Four directional positions possible on pump unit Water intake e g Bow e g Stern The flexible hoses should be attached adequately to prevent vibrations and chafing You should prevent the hose coming e into contact with sharp parts or other elements present that could damage or pierce the hose The Jet Thruster should preferably be provided with its own battery To make the most efficient use of the system you should place the battery as close to the pump unit as possible and keep the battery cables as short as possible During simultaneous operat
41. t in the nozzle and check if nozzle is placed horizontal and in 90 angle to the heart line of the vessel e g by inserting the nozzle from the inside out to determine if hole is drilled correct e 34 Holland Marine Parts 7 Outside of vessel Weldable nozzle Weld in the nozzle and cut of remaining length Smoothen surface Note Do not cut into or cut away the internal restriction within the nozzle Flange treaded nozzle In case of an rough or not entire flat surface Apply sealant for maritime purposes Sikaflex 291i 3M 5200 adhesive sealant on the side of the flange of the nozzle that contacts the vessel plating In case of a smooth and flat surface Apply the provided rubber seal Do not use additional sealant in combination with the rubber seal Inside vessel Place the PVC guide ring white nylon ring and the 2 nut apply sealant Tightly fasten the nut Make sure the nozzle remains horizontal and in 90 heart line of the vessel 8 Connect the ball valve 45 elbow and the hose connector All connections are BSP treaded Apply Sealant for maritime purposes e g Sikaflex 291i 3M 5200 adhesive sealant at every tread to connect and seal the parts Do NOT use teflon tape 9 Thoroughly clean and degrease every tread that has to be connected Make sure to use sufficient sealant on the tread At least 6 threads and smoothen with e g finger over en tire thread Apply sealant on both parts that h
42. t on the rubber gasket on the butterfly flange that contacts the PVC guide ring 1 601 00 Remove spilled sealant to prevent inner parts of the valve from jamming Do not apply sealant on the top rubber gasket of the valve Place the pump unit with the pre assembled angled flange on top of the butterfly valve Thoroughly fasten all 8 nuts to create a watertight connection of all parts Angled flange to assure vertical position of pump unit on a sloped hull See page 36 for available flanges Note pre assambled at factory Continue with the installation procedure as stipulated at page 25 38 Holland Marine Parts 4 IP protective cover for gasoline engine areas All electrical DC Jet Thruster motors are thermally protected from overheating If there is no sufficient cooling provided by means of fresh air this thermal protection will limit operating time of the system Provide sufficient cooling at any time In case the pump unit is installed in a gasoline engine area the special designed IP Cover has to be applied on the motor of the pumpunit to avoid possible explosion that may occur in case of spilled fuel fuel leakage or locally present fuel vapor Remove the 8 nuts from the SS316 flange on which the blue plastic pump house is attached This will not disconnect the pump house from the flange a Place the rubber gasket apply sufficient polymer sealant on the rubber gasket and slide the base section
43. with 3 x 2 5 mm 14 AWG pump gt valve 3 x 2 5 mm 14 AWG joystick gt pump Neoprene cables for Jet Thruster Single not included in installation kit Please note Place batteries directly next to the pump unit Keep battery cables as short as possible to avoid voltage drop and loss of energy Please note For a 12 Volts ship s circuit you need to install a series parallel switch to be able to charge the system on 12V and use it on 24V The JT 50 JT 70 and JT 90 come with a connection wire F and G as a standard accessory for this switch For 24V Series parallel see page 92 Recommended battery cabling at a length of max 1m 3ft JT 30 12V 50 mm 1 0 AWG for 1m 3ft JT 50 12V 70 mm 2 0 AWG for 1m 3ft JT 50 24V 50 mm 1 0 AWG for 1m 3ft JT 70 24V 70 mm 2 0 AWG for 1m 3ft JT 90 24V 95 mm 3 0 AWG for 1m 3ft To avoid long cable length Batteries must be placed directly next to pump unit For optimum performance keep battery cables as short as possible Charging the batteries In order to keep the ship s circuit separate from the Jet Thruster battery batteries it is recommended to divide the charging current with a diode bridge or MosFet battery separator from the alternator Please note More electricity will be required as a result of the installation of the Jet Thruster That is why in some cases it is recommended for the alternator to be converted to high yield or to place a separate alternator
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