Chapter 4: Maintenance & Fault Finding 314 Maintenance & Fault FindingControl unitRoutine checksThe control unit is a sealed unit. As a result, user maintenance islimited to the following routine checks:• make sure all cable connectors are firmly attached• examine the cables for signs of wear or damage – replace anydamaged cablesCleaning the displayCAUTION:Take care when cleaning the display. Do not wipe the displayscreen with a dry cloth as this could scratch the screen coating.Do not use acid, ammonia based or abrasive products.• Never use chemical or abrasive materials to clean the control unit.If the control unit is dirty, wipe it with a clean, damp cloth.• In certain conditions, condensation may appear inside the displayscreen. This will not harm the unit, and you can clear it byswitching on the illumination for a short time.EMC advice• When powered up, all electrical equipment produceselectromagnetic fields. These can cause adjacent pieces ofelectrical equipment to interact with one another, with aconsequent adverse effect on operation.• To minimize these effects and enable you to get the best possibleperformance from your Raymarine equipment, guidelines aregiven in the installation instructions, to enable you to ensurePedestal bracket (torque restraint) A18080Drive belt A18083Clutch kit (clutch eccentric and clutch roller) A18084Single spoke clamp, screws and inserts A18089Part description Part number81131_7.book Page 31 Wednesday, March 17, 2004 3:59 PM
