ROTA MASTER RM3000 User Manual

Automatic rotary blade grinder

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ROTA MASTER

RM3000 Automatic Rotary Blade Grinder

Please read this manual carefully before using the Rota Master.

This manual should be kept in a safe place so that it can be used for future reference.

User

s Guide &

Instruction Manual

ROTA MASTER • RM3000

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Page 1 User s Guide & ’ Instruction Manual Please read this manual carefully before using the Rota Master. This manual should be kept in a safe place so that it can be used for future reference. © Bernhard and Company Limited...
Page 2: Table Of Contents
You are now the owner/operator of a Bernhard’s Rota Master (RM3000) which, if cared for and operated correctly, will give you years of good service. This manual will enable you to obtain the best results from your RM3000 so please read it thoroughly before using your machine.
Page 3: Overview
ROTA MASTER • RM3000 Adjusts mist coolant flow rate Spark/debris scoop mount point Spark/debris scoop mount Spark/debris point scoop ‘Quick’ nut Adjusts motor height and angle Locating cone Anti-rotate stop Blade balancer Traverse stop Index stop Adjusts blade angle to stone...
Page 4: Safety
ROTA MASTER • RM3000 1. Safety This machine is primarily designed for safe and accurate grinding of rotary mower blades. It should not be used for any other purpose. This machine should be installed, operated and maintained by only competent personnel.
Page 5: Installation
ROTA MASTER • RM3000 2. Installation Having removed the Rota-Master from its packing, the unit should be positioned in a well lit area, with good ventilation, on a flat and solid floor. If required the unit can be bolted to the floor for added stability.
Page 6 ROTA MASTER • RM3000 2. Installation (Continued) Connect to the workshop air supply, set regulator (on right hand side control panel) to 85 – 90 psi (~ 6 bar) regulator Air supply connector Cross (in-feed) of carriage Fig: 2.4 Fill the coolant reservoir with clean water (or water with a 1⁄4 capful of rust inhibitor...
Page 7: Setting Up
ROTA MASTER • RM3000 3. Setting Up Blade Preparation 3.1.1 Clean the blade. Remove dirt, debris and surface rust from the cutting area of the blade. Typically use a stiff wire brush. 3.1.2 Carefully examine the blade for cracks. If any cracks are observed SCRAP THE BLADE –...
Page 8 ROTA MASTER • RM3000 Setting Up (Continued) 3.2.4 If not yet done, mount the spark/debris scoop on the side of the grind stone guard where blade grinding is to take place. The spark/debris scoop is symmetrical and the end bung and vacuum hose are a push fit.
Page 9 ROTA MASTER • RM3000 Setting Up (Continued) 3.2.5 Place the front of the blade on the front pillow block, as close to the tip as practical (this may be determined by the shape of the blade – an overhang can be tolerated).
Page 10 ROTA MASTER • RM3000 Setting Up (Continued) 3.2.6 The “quick” nut looks as though it has been badly made! Slide it over the central cone pin’ thread. When it rests on top of the blade tighten, as a normal nut, lightly.
Page 11 ROTA MASTER • RM3000 Setting Up (Continued) 3.2.10 Loosen the locking knob and rotate pivoting top tray (complete with support and blade assembly), to approximately align the edge to be ground with the carriage axis and lightly tighten the locking knob.
Page 12 ROTA MASTER • RM3000 Setting Up (Continued) 3.2.11 Slide the carriage in and wind it across with the feed handwheel on the right hand side of the machine, until the blade edge is close to the grind stone. Loosen locking knob on the left hand side of the grinding head and adjust the height of the grind stone so that it contacts the blade at the angle to be ground.
Page 13: Grinding The Blade
ROTA MASTER • RM3000 4. Grinding the Blade Ensure that the blade is positioned correctly, clear of the grind stone and that the support assembly is securely clamped in place. Ensure that the debris/spark catcher is correctly positioned (just clearing the blade as low as possible to ensure any mist coolant drips into the pivoting tray).
Page 14 ROTA MASTER • RM3000 4. Grinding the Blade (Continued) Position the infeed stop close to the side of the carriage (on the side in which in-feed is to occur). Estimate the amount of infeed travel required to finish sharpen the edge and set the gap between stop and carriage the same.
Page 15 ROTA MASTER • RM3000 4. Grinding the Blade (Continued) 4.16 Place the magnetically retained “hot guard” over the edge just completed. 4.17 Grind the opposite end of the blade as before, until the infeed stop is reached. 4.18 Both ends should now be ground the same, post grind’ balancing should be minimised.
Page 16: Blade Balancing
ROTA MASTER • RM3000 Blade Balancing (The balancer can be bolted to the left hand side of the unit as shown, tapped holes are provided in the chassis, or to some other suitable rigid location in the workshop) Position the blade centre over...
Page 17: Cleaning
ROTA MASTER • RM3000 Cleaning DO NOT SWITCH ON THE GRIND STONE MOTOR WHEN THE GRINDER HOOD IS TILTED BACK (OPEN). Loosen the two securing knobs and tilt back the hub. Remove the vacuum hose from the transfer pipe on top of the grinding head. Attach the cleaning pipe/nozzle.
Page 18: Part Numbers And Reference Diagrams
ROTA MASTER • RM3000 Parts List Ref # Name of Part Qty. Part # ROTAMASTER BASE ______________________________________________________ Rotormaster Cabinet ..............1 A6381 Door..................1 A6358 Vacuum..................1 A6027 Vacuum Hose 2.2m..............1 A6782 Vacuum Extension ..............1 A6796 Vacuum Bag ................2 A6797 Cabinet Aperture Trim 800mm..........1 A4207 Door Magnet................2...
Page 19 ROTA MASTER • RM3000 Parts List (Continued) Ref # Name of Part Qty. Part # ROTAMASTER CHASSIS __________________________________________________ Rotor Chassis................... 1 A4100 M12 x 80mm dia Lobed Knob ..............1 A6140 M6 x 40mm dia Lobed Knob..............2 A6141 Lateral Traverse Stop Rod ............... 1 A9131 Push on Fix Washer .................
Page 21 ROTA MASTER • RM3000 Parts List (Continued) Ref # Name of Part Qty. Part # MOTOR AND GUARD ______________________________________________________ Main Motor 220v, 50Hz / 60Hz ............. 1 A6025 Socket Grub Screw ............... 2 Motor Shaft Extension..............1 A9184 Grinding Stone Washer ..............1 A9185 200mm dia Grinding Stone ............
Page 22 ROTA MASTER • RM3000 Parts List (Continued) Ref # Name of Part Qty. Part # PNEUMATICS _______________________________________________________________ Pressure Regulator ..............1 A6866 Gauge 40mm dia..............1 A6867 Pressure Regulator Bracket ............ 1 A6868 Flow Control Valve ..............2 A6869 5/3 Valve, Lever Control............1 A6871 3/2 Valve, on/off ..............
Page 23 ROTA MASTER • RM3000 Parts List (Continued) Ref # Name of Part Qty. Part # ELECTRICS _________________________________________________________________ Push-button Clear B4D11 ............2 A8040 Contact Block B3T10............... 2 A8039 Lamp Holder B3F ..............2 A8036 Neon Lamp 230v..............2 A8022 Connector B3M ............... 3 A8037 Terminal Block.................
Page 25: Bernhard And Company Ltd
ROTA MASTER • RM3000 If you have any service or operational problems contact your distributor, or phone our Technical Helpline (USA only) – 1-888 474 6348 (+44) 1788 811600 Bernhard and Company Ltd, England – or email techsupport@bernhard.co.uk use the technical support feedback form on our web site www.expressdual.com or www.bernhard.co.uk...

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Summary of Contents for ROTA MASTER RM3000

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