VL203 Challenger Needle & Chisel Scalers Operation and Maintenance Manual www.trelawnyspt.co.
OPERATION General Information Safety Before operating, performing maintenance or repairing the VL203 Needle/Chisel Scalers, this manual must be read and understood. If in any doubt, ask your supervisor before using this equipment. Always, read instructions first before use. 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.
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.
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PARTS LIST VL203 ITEM No. PART No. DESCRIPTION Common Parts DESCRIPTION VL203 Components 1 615.3021 Valve Cap 2 809.0139 Valve Cap O’Ring 3 712.3022 Valve Spring 4 618.3022 5 6 7 ITEM PART No. No. 10 425.2003 VL203 Cover Assembly (Pistol Grip) Valve Stem 12 652.2003 Guide Plate 809.0089 Valve Seat O’Ring 13 829.2003 Guide Plate Seal 616.3021 Valve Body 14 809.0299 Guide Plate O’Ring 423.3021 Valve Body Assembly BSP Thread (incl items 1-8) 15 428.2003 Cylinder 423.
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. Replace with new set of needles and new needle holder. Remove seal from piston and fit into bore of cylinder.
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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: 735.3002 issue 26.6.17 www.trelawnyspt.co.
