User manual RAYMARINE LINEAR DRIVE INSTALLATION GUIDE

[. . . ] © Raymarine Ltd 2001. Linear Drive - Installation Guide 3 Introduction Product description Welcome to the installation guide for the Raymarine linear drive. This product is intended to operate the boat's steering mechanism as part of a Raymarine autopilot system. It is designed for boats with existing mechanical steering systems CAUTION: This drive moves the rudder directly from the tiller arm or rudder quadrant. Before installing the drive, check that the boat's steering system can be backdriven from the rudder. [. . . ] Cutting and rejoining these cables can compromise EMC performance and must be avoided unless doing so is detailed in the installation manual. If a suppression ferrite is attached to a cable, this ferrite should not be removed. If the ferrite needs to be removed during installation it must be reassembled in the same position. Suppression ferrites The following illustration shows typical cable suppression ferrites used with Raymarine equipment. This product has ferrites mounted internally. D3548-2 Figure 3: Typical suppression ferrites Connections to other equipment If your Raymarine equipment is to be connected to other equipment using a cable not supplied by Raymarine, a suppression ferrite MUST always be attached to the cable near to the Raymarine unit. 8 Linear Drive - Installation Guide 2. Mounting the drive Mounting the drive unit involves four main steps: · · · · ensuring correct drive alignment securing the drive to the boat connecting the drive to the steering system completing a steering check Drive alignment When mounting the linear drive unit, check that it is aligned correctly: · · The main drive assembly must be at right angles to the mounting surface (see Figure 4). The drive unit must be at right angles to the tiller arm when the rudder is amidships (see Figure 4). Side view A (mid stroke) 90º Drive Type 1 Type 2 short Type 2 long Top view A (mid stroke) 700 mm (27. 5 in) 700 mm (27. 5 in) 850 mm (33. 5 in) B (tiller arm radius) 250 mm (10 in) 250 mm (10 in) 355 mm (14 in) 90º B (tiller arm radius) D5077-1 Figure 4: Drive unit alignment · The push rod must be accurately aligned with the tiller arm plane of rotation. The ball end fitting only allows up to 5 degrees misalignment between the push rod and tiller arm plane of rotation (see Figure 5). CAUTION: Accurate angular alignment is extremely important. You must not exceed this +/- 5 degree limit under any circumstances. Linear Drive - Installation Guide 9 5º Max. 5º Max. D5078-1 Figure 5: Alignment between push rod and tiller arm plane of rotation Securing the drive Mounting location Before you secure the drive to your boat, you must first check the suitability of the mounting location. CAUTION: Consult the boat manufacturer if you have any doubt about the strength or suitability of the mounting location. · Structural strength: · This drive produces a considerable amount of force, so you must mount it on a solid structure (i. e. In some cases you may need to build a special frame to mount the drive unit. · To prevent excess noise and vibration, do not attach this drive to any structures that support cabins. Drive orientation: · You can attach the drive unit mounting foot to any suitable horizontal or vertical surface. General position: · Refer to the EMC installation guidelines (page 6) · Make sure the drive will be accessible for future servicing. Environment: · This drive is not waterproof, so you should mount it in a dry location, clear of any bilge water. · · · 10 Securing bolts Linear Drive - Installation Guide Attach the mounting foot with four stainless steel M10 (3/8 inch) bolts and lock nuts/lock washers. Note: Always mount the drive as securely as possible to make sure it performs reliably and remains correctly aligned. Connecting to the steering system CAUTION: Consult the steering gear manufacturer if you have any doubt about the strength of the existing tiller arm or rudder quadrant. This drive produces a considerable amount of force, so you must ensure that your tiller arm or rudder quadrant can cope with the peak thrust specified in the Table 1, Drive specifications. Use one of these methods to attach the push rod to the rudder stock: 1. Independent tiller arm: we recommend that you attach the linear drive unit to the rudder stock via an independent tiller arm (the Edson and Whitlock companies offer standard fittings for their steering systems). Steering linkage tiller arm or rudder quadrant: in certain cases, you may be able to attach the push rod to the same tiller arm or rudder quadrant used by the main steering linkage. [. . . ] They will ensure that service procedures and replacement parts used will not affect performance. Some products generate high voltages, so never handle the cables/connectors when power is being supplied to the equipment. · Linear Drive - Installation Guide 15 · · · When powered up, all electrical equipment produces electromagnetic fields. These can cause adjacent pieces of electrical equipment to interact with one another, with a consequent adverse effect on operation. In order to minimize these effects and enable you to get the best possible performance from your Raymarine equipment, guidelines are given in the installation instructions, to enable you to ensure minimum interaction between different items of equipment, i. e. [. . . ]