Raymarine M81166 User Manual

Constant Running Hydraulic Pump

Installation Guide

Drives covered:

M81125 Type CR1 (3 L) Constant Running Pump 12 V M81127 Type CR1 (3 L) Constant Running Pump 24 V M81126 Type CR2 (4.5 L) Constant Ru nning Pump 12 V M81128 Type CR2 (4.5 L) Constant Ru nning Pump 24 V

Document number: 81179-3 March 2001

2 Constant Running Hydraulic Pump - Installation Guide

Important information

Safety notices

WARNING: Product installation

This equipment must be installed and operated in accordance with the instructions contained in this handbook. Failure to do so could result in poor pr oduct performance, personal injury and/ or damage to your boat.

Because correct performance of the boat’s steering is critical for safety , we STRONGLY RECOMME ND that an Authori zed Raymarine Service Representative fits this product.

WARNING: Navigation aid

Although we have designed this pr oduct to be accurate and reliable, many factors can affect its performance. As a result, it should only be used as an aid to n avigation and should never replace commons ense and navigational judgement. A lways maintain a permanent watch so you can respond t o situations as they develop.

EMC conformance

All Raymarine equipment and accessories are designed to the best industry standards for use in the recreational marine environment. The design and manufacture of Raymarine equipment and accessories conform to the appropriate Electromagnetic Compatibility (EMC) standards, but correct installation is required to ensure that performance is not compromised.

Handbook information

T o the best of our knowledge, the information in this han dbook was correct when it went to press. However, Raymarine cannot accept liability for any inaccuracies or omissions it may contain. In addition, our policy of continuous product improvement may change specifications without notice. As a result, Raymarine cannot accept liability for any differences between the product and the hand book.

Constant Running Hydraulic Pump - Installation Guide 3

Introduction

Product description

W elcome to the installation guide for the Raymarine constant running (CR) hydraulic pump. This product is intended to operate the boat ’s steering mechanism as part of a Raymarine autopilot system.

The pump provides an ideal drive system for large boats and heavy duty steering applications. It is primarily designed for use on boats with an existing hydraulic steering system. Alternatively , you can use this pump on a boat with mechanical steering in conjunction with a secondary steering ram and bypass valve.

The pump contains a built-in reservoir that holds hydraulic fl uid and an integral solenoid valve that controls the flow of hydraulic fluid t o the steering ram. The autopilot system steers the boat by using the solenoid control valves to control the flow of h ydraulic fluid to the steering ram.

Ram ports

Reservoir port

Reservoir

Figure 1: Main parts of the CR pump

This guide contains:

Motor cables

Motor

Product specifications page 4

Installation instructions page 5

Maintenance information page 17

Solenoid control valve x2

Power connector x2

(for solenoid control valve)

Mounting foot

D5176-1

4 Constant Running Hydraulic Pump - Installation Guide

Specifications

Pump specifications

Table 1: Pump specifications

Performance

(at nominal voltage)

Ram capacity 350-500 cc

Ram single or double ended

Maximum stall pressure (at 12 V)

Peak flo w rat e (no load)

Other information (applies to Types CR1 and CR2)

Pump dimensions

Typ e CR1

M81125 (12 V) M81127 (24 V)

(21-30 in

)

50 bar (750 psi)

3000 cc/min

/min)

(180 in

Type CR 2

M81126 (12 V) M81128 (24 V)

500-1200 cc (30-73 in3)

50 bar (750 psi)

4500 cc/min (270 in3/min)

protected for use in engine compartments

CE approvals - conforms to: 89/336/EC (EMC), EN60945:1997 94/25/EC (RCD), EN28846:1993

356 mm (14 in)

Figure 2: Pump dimensions

262 mm (10.3 in)

224 mm (8.8 in)

D5178-1

Constant Running Hydraulic Pump - Installation Guide 5

Installation instructions

Parts required

T o install this drive you will need:

• Parts supplied:

• CR hydraulic pump

• if required: BSP to NP T adaptors (x3)

• Additional parts:

• suitable hydraulic pipes, hydraulic fluid, T -pieces, pipe

fittings and thread-sealing compound (see page8)

• suitable securing bolts, lock washers/lock nuts (see page 7)

• suitable cable and electrical connectors for the drive motor

and solenoid control valves (see page 13)

• CR interface (to connect to Ty pe 100/300 course computer)

• bypass valve (if connecting to a secondary steering ram)

Note: Obt ain these additional parts before you sta rt installation.

Installation steps

WARNING: Electrical safety

Make sure y ou have switched off the power su pply befor e you start installing this product.

Follow these steps to install your CR pump:

Consult the EMC installation guidelines. page 6

Mount the pump. page 7

Connect to the hydraulic steering system. page 8

Connect to the course computer. page 13

Complete the post-installation checks. page 16

6 Constant Running Hydraulic Pump - Installation Guide

1. EMC installation guidelines

All Raymarine equipment and accessories are designed to the best industry standards for use in the recreational marine environment.

Their design and manufacture conforms to the appropriate Electromagnetic Compatibility (EMC) standards, but correct installation is required to ensure that performance is not compromised. Although every effort has been ta ken to ensure that they will perform under all conditions, it is importa nt to understand what factors could affect the operation of the product.

The guidelines given here describe the conditions for opti mum EMC performance, but it is recognized that it may not be possible to meet all of these conditions in all situations. T o ensure the best possible conditions for EMC performance within the constraints imposed by any location, always ensure the maximum separation possible between different items of electrical equipment.

For optimum EMC perform ance, it is recommended that wherever possible:

• Raymarine equipment and cables connected to it are:

• At least 3 ft (1 m) from any equipment transmitting or cable s

carrying radio signals e.g. VHF radios, cables and antennas. In the case of SSB radios, the distance should be increased to 7ft (2m).

• More than 7 ft (2 m) from the path of a radar beam. A radar beam can normally be assumed to spread 20 degrees above and below the radiating element.

• The equipment is supplied from a separate battery from that used for engine start. Voltage drops below 10 V , and starter motor transients, can cause the equipment to reset. This will not damage the equipment, but may cause the loss of some information and may change the operating mode.

• Raymarine specified cables are used. Cutting and rejoining these cables can compromise EMC performance and must be avoided unless doing so is detailed in the installation manu al.

• If a suppression ferrite is attached to a cable, this ferrite should no t be removed. If the ferrite needs to be removed d uring installation it must be reassembled in the same position.

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