NEXUS. Instruction Book and Parts List NEXUS NEXUS PRO.

Transcription

1 Instruction Book and Parts List NEXUS NEXUS NEXUS PRO NEXUS PRO Solid or Flexible Drive, Standard fit or QR (Quick Release), Pin or Worm Drive

2 Warning ELECTRICITY CAN BE DANGEROUS IF ABUSED The set is supplied with a moulded on plug. Should this plug ever need replacing, the leads in the mains lead are coloured in accordance with the following code: green/ yellow - earth, blue - neutral, brown - live The motor must be protected by a 13A fuse The electricity supply must conform to the standards prescribed by the Institute of Electrical Engineers (UK only) or other approved standards (Other markets) Maintain mains cable and shearing set in good condition and have tested regularly by a qualified electrical engineer. The mains cable must include an earth lead - ensure it is in good condition. For added safety include either a portable earth leakage trip or an earth leakage trip in the mains circuit. Hang cable clear of working area. The electrical equipment is not waterproofed. Always keep and use in dry conditions. To ensure no strain is imposed on the mains cable, restrain the shearing set to stop it rotating. Disconnect from mains supply before dismantling set. To protect shearers feet when handpiece is left unattended during shearing, place handpiece underside flat on the floor SEE ALSO : ELECTRICAL & SAFETY INSTRUCTIONS LEAFLET

3 CONTENTS SAFETY Page No: Inside Front Cover INTRODUCTION 2 GETTING STARTED / SETTING UP Connecting Flexible Drive 2 Working Height (Flexible Drive) 3 SOLID DRIVE Connecting Solid Drive 4-5 Working Height (Solid Drive) 6 CHANGING SPEED 6 SENSOR OVERLOAD CUT-OUT 6 MAINTENANCE & LUBRICATION 7 PARTS LISTS Motor Unit 8-9 Switch & Sensor Ordering Spares 10 Flexible Drive & Hanging Bracket Solid Drive WARRANTY & REPAIR Wiring Diagrams 16 SERVICE EQUIPMENT AVAILABLE Inside Back Cover 1

4 INTRODUCTION The Nexus shearing set is a mains operated machine with three speed settings. Standard pulleys give 2800, 3200 & 3500 RPM. The optional Lo-Range pulley set gives speeds of 2000, 2800 & 3500 RPM. The fastest speed setting is on the lower grooves (i.e. next to the top plate). The drive belt is automatically tensioned correctly by a compression spring, and will not require adjustment. The machine is operated by a pull switch, pull once for on, pull again to switch off. Before connecting your drive, ensure the motor is in the off position. Drive connection is explained later. Make sure to read and understand the instruction book supplied with your handpiece. Always have a good supply of sharp, clean combs and cutters when shearing, and change them when necessary. With proper care, maintenance and lubrication your Nexus set should give years of trouble free shearing. GETTING STARTED / SETTING UP CONNECTING A STANDARD FLEXIBLE DRIVE (Fig.1a) 1. Slacken top sleeve nuts and expose the bayonet joint attached to the inner. 2. Push bayonet joint onto the machine drive spindle against the spring. Hold the drive spindle still and rotate the bayonet joint so that the drive spindle pin engages into the L-shaped slot in the bayonet joint. 3. Push the top sleeve right up over the spindle bearing and tighten the top nut. 4. With the drive hanging straight, adjust the flexible outer up or down until the bottom joint projects through the end ferrule by about 20mm (3/4 ) as shown in Figure 3. Tighten the lower top sleeve nut. CONNECTING A QUICK RELEASE FLEXIBLE DRIVE (Fig.1b) 1. Open the quick release clamp and push the top sleeve right up over the spindle bearing until it hits the end stop. Twist it as it goes up if necessary to encourage the spline drive spindle to engage with the quick release joint. 2. Close the quick release clamp and check that the drive is hanging securely. If it is not secure, re-open the clamp and tighten the adjusting nut to increase the clamping force before closing the clamp again. Repeat as necessary. 3. The sheath assembly position is preset so that the top end of the sheath assembly is 118mm (4 5/8 ) from the top end of the top sleeve. This ensures that the spline drive spindle engages correctly with the quick release joint and causes the bottom joint to project from the end ferrule by about 20mm (3/4 ) as in Fig. 3. 2

5 Fig. 1a Spindle Bearing Drive Spindle Flexible Drive Bayonet Joint Top Wingnut or Tommy Nut Top Sleeve Bottom Wingnut or Tommy Nut Flexible Drive Fig. 1b Spindle Bearing Spline Drive Spindle Adjusting Nut Flexible Drive Quick Release Clamp Flexible Drive WORKING HEIGHT - FLEXIBLE DRIVE (Fig.2) Fig. 2 The set should be suspended, with the flexible drive hanging straight down, so there is 25mm (1 ) between the end of the flexible drive inner and the floor or working area. To make sure there is no undue strain on the mains lead or flexible drive, the machine should be securely fixed to a wall, beam or shearing trailer to prevent it rotating when operating the pull switch. Fig. 3 3

6 CONNECTING & DISCONNECTING THE HANDPIECE Set the comb and cutter as explained in the handpiece instruction book, and tension correctly. Screw the ferrule onto the backjoint tightly. Holding the handpiece in one hand and the end of the drive in the other, insert the drive into the ferrule. Press the handpiece firmly onto the drive and rotate the handpiece clockwise to engage the drive pin (or worm drive). Make sure there is enough tension on the handpiece to prevent the cutter moving easily during engagement. To remove handpiece from the drive, switch off the machine. Push the handpiece onto drive and, maintaining pressure, rotate anti-clockwise until pin (or worm drive) is disengaged. Handpiece will now disconnect. SOLID DRIVE ASSEMBLY OF SOLID DRIVE (Fig.4a) 1. Slide ferrule onto bottom (plain) end of the long tube. 2. Hook the tube joint assembly, (either spindle eye) onto the hook at the bottom end of the long inner core (inside the long tube). 3. Slide the ferrule down the long tube and screw onto the threaded end of the tube joint assembly. Tighten securely. 4. Hook the other end of the tube joint assembly onto the short inner core. 5. Slide the short tube over the short inner core and tighten the nut onto the tube joint assembly so that the end of the bayonet joint protrudes 3mm (1/8 ). CONNECTING A STANDARD SOLID DRIVE (Fig.4b) 1. Slacken top sleeve nuts. Push exposed bayonet joint onto the machine drive spindle against the spring. Hold the drive spindle still and rotate the bayonet joint so that the drive spindle pin engages into the L-shaped slot in the bayonet joint. 2. Push the top sleeve right up over the spindle bearing and tighten the top nut. 3. Slide the long tube/spring assembly up inside the top sleeve until approx 216mm (8½ ) of spring is exposed, then tighten the lower top sleeve nut. This ensures correct clearance at the end of the long tube inside the ferrule. CONNECTING A QUICK RELEASE SOLID DRIVE (Fig.4c) 1. Open the quick release clamp and push the top sleeve right up over the spindle bearing until it hits the end stop. Twist it as it goes up if necessary to encourage the spline drive spindle to engage with the quick release joint. 2. Close the quick release clamp and check that the drive is hanging securely. If it is not secure, re-open the clamp and tighten the adjusting nut to increase the clamping force before closing the clamp again. Repeat as necessary. 3. The tube spring position is preset so that the top end of the top spring is mm (4 5/8 ) from the top end of the top sleeve. This ensures that the spline drive spindle engages correctly with the quick release joint and ensures correct clearance at the end of the long tube inside the ferrule. 4

7 Fig. 4a Spindle Eye Ferrule Gut Hook Long Tube End Of Long Tube Must Not Bottom Out Here Tube Joint Assembly 3mm (1/8 ) Tube Joint Assembly Short Tube Bayonet Joint Nut Fig. 4b Spindle Bearing Drive Spindle Bayonet Joint Oil Hole Must Not Be Blocked Top Wingnut or Tommy Nut Tube Spring Top Sleeve Bottom Wingnut or Tommy Nut Fig. 4c Spindle Bearing Spline Drive Spindle Adjusting Nut Quick Release Clamp Tube Spring 5

8 WORKING HEIGHT - SOLID DRIVE (Fig5.) With the handpiece removed, the set should be suspended so that when the solid drive hangs down freely, there is just 1mm between the end of the drive joint and the working surface. The machine should be securely & rigidly fixed to a wall, beam or shearing trailer so that it does not move during operation. This allows the tube spring to function properly. Fig. 5 CHANGING SPEED (Fig.6) 1. Remove top cover screws and top cover with allen key provided. 2. Move the drive belt to the required position by pushing the spindle bearing towards the motor to reduce belt tension, then move the belt to required grooves. 3. Ensure the belt is correctly positioned in both pulley grooves to eliminate belt/pulley wear. 4. Replace top cover and screws. Fig. 6 SENSOR OVERLOAD CUT-OUT The NEXUS SENSOR and NEXUS PRO SENSOR are fitted with an automatic cut-out which will operate if an overload situation arises. This Sensor will automatically switch off the power to the motor, and the handpiece may also disconnect. This is normal. If this happens, check the handpiece and comb & cutter for faults or obstructions before resuming shearing. The pull switch will need to be pulled once to reset the Sensor and a second time to restart the motor. Note: Under certain circumstances, when an obstruction is hit, the drive may disengage from the machine before the Sensor cut-out can operate. This is normal and does not signify a faulty Sensor. 6

9 MAINTENANCE & LUBRICATION (Fig. 7) The NEXUS, when properly cared for, should give years of trouble-free shearing. To keep machine and drive in the best possible condition, follow these simple instructions: 1. Make sure machine is fixed securely when shearing to prevent strain on the electric cable. 2. Keep air vents clear form blockages. 3. Ensure the drive spindle is regularly oiled through the oil hole in the spindle bearing during shearing. DO NOT over-oil as this can lead to oil getting onto the drive belt and causing slip and loss of drive. 4. Periodically check the pulley drive belt for signs of wear, and change if required. Make sure the top plate is clean and free from oil. A worn or oily belt can make the pulleys slip. 5. When shearing make sure the flexible or solid drive is regularly oiled at all the correct places (See Fig.7). 6. When not shearing, store flexible drives straight or with minimum bending. Flexible inners should be lightly greased and solid cores oiled at the end of the season before storing. Fig. 7 7

10 PARTS LIST - MOTOR UNIT (Fig 8.) Item Part Number Description No. per Set W Motor & Capacitor 240V 50Hz 1 or W Motor & Capacitor 110V 60Hz 1 or W PRO Motor & Capacitor 240V 50Hz Top Plate Top Plate Stud Spring Abutment Split Pin Spring Bar Split Pin Spring Spindle Bearing Assy (Includes Items 10 & 11) Ball Bearing Bush Drive Spindle Assy (Includes items 13 & 14) 1 or 12a Spline Drive Spindle (for Quick Release ) Spring Drive Pin Driving Pulley 240V 50HZ 1 or Driving Pulley 110V 60Hz Grubscrew M5 (W-cup Point) Driven Pulley Grubscrew M5 (Dog Point) Poly-V Belt Green Top Cover 1 or Green Sensor Top Cover 1 or /ORA Orange Top Cover 1 or Orange Sensor Top Cover Screw M8 x 25 (Hex Socket Button Head) Washer (Fan Disc Type) Screw M6 x 16 (C sk Head) Grey Bottom Cover 1 or /CEN Black Bottom Cover Screw M5 x 10 (Hex Socket Button Head) Washer Capacitor to Switch Lead Speed Change Label Piggyback Terminal (if required) Spring Clip for Spindle Bearing Rubber Foot (NEXUS PRO / PRO SENSOR) Barbed Rivet (NEXUS PRO / PRO SENSOR) 7 OPTIONAL EXTRA FOR 240V ONLY - (See Fig 13.): Lo-Range Pulley Kit for 2000, 2800 & 3500 RPM 8

11 Fig. 8 9

12 PARTS LIST - SWITCH & SENSOR (Fig.9) Item Part Number Description No. Per Set Mains Lead 3-core UK Plug 1 or Mains Lead 3-core USA Plug 1 or Mains Lead 3-core AUS Plug 1 or Mains Lead 3-core EURO Plug Grommet Cable Clamp & Bridge Screw No.4 x 9.5mm Screw No.4 x 16mm Switch Assembly 1 or Amp Switch Assembly 1 (use for NEXUS 110V and NEXUS PRO / PRO SENSOR 240V) Arrow Label Ratchet Wheel Ratchet Spring Switch Lever Assembly 1 (Comprising items 12-17) Ratchet Shaft Ratchet Housing Return Spring Switch Lever Grubscrew M5 x 8 (Full Dog-Point) Grubscrew M5 x 6 (Cone Point) Grubscrew M5 x 10 (Cone Point) Split Ring Rope Assembly 1 (Includes item 19) Sensor Cut-out PCB 240V 1 (for NEXUS SENSOR 240V) or PRO Sensor Cut-out PCB 240V 1 (for NEXUS PRO SENSOR 240V) ORDERING SPARES Should you ever need to order spares for your machine or drive, always quote the PART NUMBER and DESCRIPTION. Where possible state the MACHINE or DRIVE TYPE and SERIAL NUMBER of the machine which will be found on the specification plate attached to the bottom cover. This will help us speed up your order, and overcome any confusion by ordering the wrong spares. 10

13 Fig. 9 11

14 PARTS LIST - FLEXIBLE DRIVE & HANGING BRACKET (Fig.10) Item Part Number Description No. Per Set Standard Top Sleeve Assembly 1 (Comprising items 2, 3, 4) 1a Quick Release Top Sleeve Assembly 1 (Comprising items 2, 3, 4a, 4b) Sleeve Assembly Nib Head Bolt M8 x 32mm Tommy Nut M8 2 4a Quick Release Clamp Assembly 1 4b Security Nut M Standard Shaft & Sheath Complete (Pin Drive) 1 (Comprising items 6, 8, 9 at top, 9 at bottom) or Standard Shaft & Sheath Complete (Worm) 1 (Comprising items 6, 8, 9 at top, 9b at bottom) or Quick Release Shaft & Sheath Complete (Pin) 1 (Comprising 1a, 6, 8, 9a at top, 9 at bottom) or Quick Release Shaft & Sheath Complete (Worm) 1 (Comprising 1a, 6, 8, 9a at top, 9b at bottom) Sheath Assembly Standard Shaft Assembly with Joints (Pin Drive) 1 (Comprising items 8, 9 at top, 9 at bottom) Shaft Inner Less Joints Bayonet Joint Assembly (Comprising 10 & 11) 1-2 9a Quick Release Joint (for top end only) 1 9b Worm Drive Joint (for bottom end only) Spring Bayonet Joint Ferrule for Flexible Drive 1 HANGING BRACKET - OPTIONAL EXTRA Universal Hanging Bracket Complete (Includes items 14-17) Bracket Bolt M6 x Nut Spring Washer 2 Note: Hanging bracket is suitable for either solid or flexible drive machines 12

15 Fig

16 PARTS LIST - SOLID DRIVE (Fig 11) Item Part Number Description No. Per Set Standard Downtube Complete (Pin Drive) 1 or Standard Downtube Complete (Worm Drive) 1 or Quick Release Downtube Complete (Pin Drive) 1 or Quick Release Downtube Complete (Worm) Standard Long Tube Assembly 1 (Comprising items 3, 5, 7, 8 & 10) 2a Quick Release Long Tube Assembly 1 (Comprising items 3a, 5, 7, 8 & 10) Standard Top Sleeve Assembly (Comprising items 4, 5, 6) 1 3a Quick Release Top Sleeve Assembly 1 (Comprising items 4, 5, 6a, 10) Sleeve Assembly Nib Head Bolt M8 x Tommy Nut M8 2 6a Quick Release Clamp Assembly Tube Spring Long Tube Assembly Security Nut M Hexagon Nut M Standard Long Core Assy (Includes 12 & 13) 1 11a Quick Release Long Core Assy (Includes 12a & 13) Bayonet Joint (3-slot) 1 12a Quick Release Joint Gut Hook Ferrule for Solid Drive Tube Joint Assy Complete (Comprising 16-21) Tube Joint Bearings Matched Pair (Includes 17) Tube Joint Screw Tube Joint Spindle Cog for Solid Downtube Tube Joint Guard Tube Joint Push Rivet Short Tube Assembly Complete 1 (Comprising items 5, 10, 23) Short Tube Assembly Short Core Assy - Pin Drive (Includes 27 & 28) 1 26a SC Short Core Assy - Worm Drive (Includes 27 & 29) Gut Hook T Bayonet Joint (2-slot) Worm Drive Joint Optional Rope Guide Kit (Comprising 10, 31, 32) Rope Guide Extended Hexagon Nut M8 1 14

17 Fig

18 WARRANTY & REPAIR Items requiring repair or attention under warranty should be returned to the dealer from whom it was purchased. In case of difficulty contact the Lister Shearing factory. See back cover for contact details. WIRING DIAGRAMS WARNING! Electrical Repairs must only be undertaken by qualified persons! Fig. 12a - Nexus / Nexus Pro Fig. 12b - Nexus Sensor / Nexus Pro Sensor 16

19 Fig Available Service Equipment 17

20 TECHNICAL DATA MOTOR RATED VOLTAGE (check rating plate) V 50Hz - Single Phase or V 60 Hz - Single Phase MOTOR POWER Nexus: 250W (1/3 HP) Nexus Pro: 700W (1 HP) DRIVE SPEEDS Standard Pulleys - Low RPM - Top Grooves - Medium RPM - Middle Grooves - High RPM - Lower Grooves Lo-Range Pulleys - Low RPM - Top Grooves ( for 240V - Medium RPM - Middle Grooves ONLY) - High RPM - Lower Grooves WORKING HEIGHT ABOVE GROUND Hang set so that end of drive is 25mm (1 ) above ground or working surface FLEXIBLE DRIVE SETTING Lower bayonet joint projection 20mm (3/4 ) SOLID DRIVE SETTING Lower bayonet joint projection 3mm (1/8 ) LUBRICATION Drive shafts - General purpose grease Oil Holes - Lister R30 oil or SAE 30 or Multigrade Lister Shearing Equipment Ltd Dursley, Gloucestershire, GL11 4HR Tel: +44 (0) info@lister-shearing.com A Subsidiary of Clipper Corporation LS B-A