Related Manuals for Nexus TH 52
Summary of Contents for Nexus TH 52
- Page 1 Log TH 52 - Transducer - Installation and Operation Manual Installation and Operation Manual English English...
- Page 2 LOG TH52...
- Page 3 LOG TH52...
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Page 4: Table Of Contents
LOG TH52 Mounting instruction log/temp transducer General ..................3 Applications ....................3 Tools and Materials ..................4 Pre-Installation Test..................4 Antifouling Paint..................... 4 Mounting Location ..................5 Installation ..................6 Bedding......................6 Installing......................6 Checking for Leaks ..................8 Installation in a Cored Fiberglass Hull............8 Operation, Maintenance............10 How the Valve Works................... -
Page 5: Tools And Materials
LOG TH52 • Stainless steel housing recommended for metal hulls to prevent electrolytic corrosion. Tools and Materials Water-based or mineral spirits based antifouling paint (mandatory in salt water) Safety goggles Dust mask Electric drill with 10mm (3/8") or larger chuck capacity Drill bit 3mm or 1/8"... -
Page 6: Mounting Location
LOG TH52 Mounting Location Turbulence-free water must flow over the paddlewheel at all speeds. Choose an accessible spot inside the vessel. Allow a minimum of 280mm (11") of headroom for the height of the housing, tightening the nuts, and removing the insert. •... -
Page 7: Installation
LOG TH52 Installation Cored fiberglass hull—Follow separate instructions on page 3. Hole Drilling Warning: Always wear safety goggles and a dust mask. Drill a 3 mm or 1/8" pilot hole from inside the hull. If there is a rib, strut or other hull irregularity near the selected mounting location, drill from the outside. - Page 8 LOG TH52 After the sealant cures, inspect the O-rings on the valve assembly (replace if necessary) and lubricate them with the silicone lubricant supplied (see Figure 3). Slide the valve assembly into the housing being sure to engage the key in the notch. Screw the plastic cap nut in place and hand-tighten only.
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Page 9: Checking For Leaks
LOG TH52 the insert from backing out in the unlikely event that the cap nut fails or is screwed on incorrectly. 12. Attach the safety wire to one eye in the hull nut. Thread the short emergency plug onto the wire. Lead the wire in a counterclockwise direction and thread it through one eye in the cap nut. - Page 10 LOG TH52 drilled in the wrong location, drill a second hole in a better location. Apply masking tape to the outside of the hull over the incorrect hole and fill it with epoxy.) Using the 51mm or 2" hole saw, cut the hole from outside the hull through the outer skin only (see Figure 4).
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Page 11: Operation, Maintenance
LOG TH52 Operation, Maintenance How the Valve Works The sensor incorporates a self-closing valve which minimizes the flow of water into the vessel when the paddlewheel insert is removed. The curved flap valve is activated by both a spring and water pressure. Water pushes the flap valve upward to block the opening so there is no gush of water into the boat. -
Page 12: Servicing The Valve Assembly
LOG TH52 Using the new paddlewheel shaft, push the old shaft out about 6mm (1/4"). With pliers, remove the old shaft (see Figure 5). Place the new paddlewheel in the cavity with the flat side of the blade facing the same direction as the arrows on the top of the insert. - Page 13 LOG TH52 Warning: The O-rings must be intact and well lubricated to make a watertight seal. To reinstall the valve assembly and paddlewheel insert, inspect (replace if necessary) and lubricate the O-rings on the valve assembly and the paddlewheel insert with silicone lubricant or petroleum jelly. Remove the safety wire and cap nut from the emergency plug.
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Page 14: Connection To Instrument/Contacts
LOG TH52 CONNECTION TO INSTRUMENT/CONTACTS The log/temp transducer connects to the FI-30 Server or directly to the FI-30 Speed Log. The transducer cable is clearly marked with No 1 and the colours will correspond to input screw terminal on the Server. If the 8 m transducer cable needs to be cut, use the extra cable protectors supplied. - Page 15 LOG TH52...
- Page 16 LOG TH52 Copyright ©: Nexus Marine AB Kuskvägen 4, 191 62 Sollentuna, Sweden Tel: +46 -(0) 8 – 506 939 00. Fax: +46 -(0) 8 -506 939 01 www.nexusmarine.se...
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