VL303 Challenger Needle Scaler Operation and Maintenance Manual www.trelawnyspt.co.
OPERATION General Information Safety Local safety regulations must be followed at all times. Failure to follow these instructions could result in damage to the Scaler and/or personal injury. Operators should be familiar with the data given in the specification section. Please keep these instructions in a safe and accessible place. Do Be aware that this tool is not electrically insulated. Be aware that the tool can create dust and flying debris. Keep hands and clothing away from moving parts.
MAINTENANCE Excessive operator pressure will not improve the tool efficiency but could cause premature tool failure and operator fatigue. Never allow the tool to run continuously whilst not in contact with the surface being prepared. To operate the tool, pull the throttle lever towards the handle and then apply the needles to the surface to be worked. Do not place needles on the surface, and then pull the throttle lever as this will result in the tool bouncing off the surface.
MAINTENANCE Cylinder Ball Valve replacement This is a consumable item and will require replacing after approximately 120 -160 hours use; this is dependant on the cleanliness of the air supply and frequency of lubrication. Do not replace this plastic ball with a steel version, as it will damage the cylinder valve seat and piston valve pin. Remove the ball retaining O’Ring (18) from its groove just inside the bore of the stem using a suitable pointed implement.
EXPLODED VIEW EXPLODED VIEW
PARTS LIST ITEM No. PART No. DESCRIPTION 1 615.3021 Valve Cap 3 712.3022 Valve Spring VL303 Components 2 4 5 6 809.0139 618.3022 809.0089 616.3021 423.3021 323.3521 Valve Cap O’Ring Valve Stem Valve Seat O’Ring Valve Body Valve Body Assembly BSP Thread (inc items 1-8) Valve Body Assembly NPT Thread (inc items 1-8) 7 716.3000 Throttle Lever 8 813.0108 Roll Pin 9 10 12 13 14 15 17 18 716.1000 717.3050 425.3003 Safety Throttle Lever 809.0299 Guide Plate O’Ring 816.3003 809.
TECHNICAL SPECIFICATION TROUBLE SHOOTING CAUSE Poor performance or lack of Low air pressure. power. If tool has been left for some time without use, the oil may dry out slightly, causing a sticky residue. Needles worn or some missing. Piston seal worn. Tool continues to run with trigger released. High vibration. Tool stopped working. Piston Diameter Piston Stroke (approximate) BPM Air Consumption @ 6.
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Trelawny SPT Ltd 13 Highdown Road, Sydenham Industrial Estate, Leamington Spa, Warwickshire, CV31 1XT, United Kingdom Telephone: +44 (0)1926 883781 - Fax: +44 (0)1926 450352 Email: sales@trelawny.co.uk © TSPT UK 2009 Part No: 735.3003 issue 13.02.17 www.trelawnyspt.co.
