M/S

Manual Instruction

For

Anti-Fouling System

(M.G.P.S.)

Supplied by: Pacific Ships Plants & Industries Pte Ltd.

Job No: JS-11-114.

Project: H1470.

Reference No: KM38694/E.

EQUIPMENT SUPPLIED BY

For sales enquiry: chong.wk@pacificglobal.com.sg

For technical enquiry: samuel.ng@pacificglobal.com.sg

For spare parts enquiry: mark@pacificglobal.com.sg

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- 2 -

INTRODUCTION FOR M.G.P.S

The system is based on the electrolytic principle consisting of copper and aluminium anodes which are fed with a fixed impressed electrical current from control panel.

The System is designed to give continuous protection with the minimum maintenance against marine growth and corrosion caused by marine growth in seawater service line. It will provide complete protection through the full designated anode life.

Excessive anode current will result in an excessive rate of consumption of the anodes, and then reducing their life and possibly leaving the water system unprotected if the anodes are worn out.

SYSTEM PRINCIPLE

The system produces anti-fouling ion using specially alloyed anodes. There are two types known as the CU(copper) anodes and AL(aluminium) anodes.

CU Anodes are manufactured from copper as major part for system. The copper anode produces ions which are transported by the seawater and carried into the pipework system to prevent marine growth.They release ions during electrolysis as following reactions.

Anodic reaction Cu Cu2+ + 2e Cathodic reaction 2H2O + 2e H2 + 2OH

AL Anodes are manufactured from aluminium as supplementary part for system. The slow dissolution of the aluminium anode produces ions which spread throughout the system and produce an anti-corrosive layer on the internal surface of sea water cooling lines. They release ions during electrolysis as following reactions.

Anodic reaction Al Al3+ + 3e Cathodic reaction 3H2O + 3e 3/2H2 + 3OHProduct of Al(OH)3 Al3+ + 3OH Al(OH)3

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INSTRUCTION FOR CONTROL PANEL(KCAF/NM TYPE)

DISPLAY

The panel contains digital display according to the quantity of anode. Current setting for each anode can be easily adjusted by up-down button and is shown in the digital display. The alarm lamp will be ON when improper current to each anode is set and any failure of system operation. This alarm can be connected to vessels alarm system externally.

FIXING

Two mounting bars with four holes for M10 are incorporated on the back plate of the panel. We recommend a bulkhead mounting in close proximity to the anodes to avoid voltage drop and cutting cable run costs.

MAIN POWER SUPPLY CABLE

Run cable from available power source .... via gland to terminal marked 'Mains In'. Be sure to connect correct cable to terminal.

SETTING UP

Once the cables have been run and connected, the System is ready to be switched on. NOTE - the following procedure can only be carried out with the anodes in seawater.

1. Switch on the main power.

2. Set all anodes currents by pressing the buttons unless the readings of digital display correspond to each current specified in Operation Manual.

3. Switch off until ship starts engine(s) up and switch on when sea water pumps are running.

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(JIS 5K-100A FLANGE WITH PIPE UPSTAND TYPE)

Before work, make sure of anode overhaul height by the length of anode & mounting sleeve over the sea chest top.

1. Pipe upstand (100A #80) to be supplied and fitted by client. Pipe to have minimum bore of 95mm inside after coating or lining to ensure clearance of anode mounting assembly. Flange to be JIS 5K-100A.

B 1,2$ %0))7($6 6',?(+-% B' %)$&(B(& %5%*$>Burn a hole in the sea chest top plate to suit outside diameter of pipe in position stated on drawing.

B 1,2$ +* %0))7($6 6',?(+-%Determine the position of the pipe upstand and burn a hole in the top plate of the sea chest to suit pipe outside diameter. The anodes must be positioned between the sea water inlet grid and suction pipes in the sea chest in case anode are installed in sea chest. Recommended minimum dimensions for anode positioning 220mm between anode centers and 120mm between anode center and the nearest steel works.

1.1$76 )()$ 0)%*,+6 (+ )%(*(+3 $+%0'(+-9Pipe is welded to the sea chest top plate on both top and bottom surfaces.

1.2 Flange top surfaces must be horizontal unless otherwise stated. 1.3 We recommend that any special paint or coating applied to the sea chest be also applied to the

pipe upstand.

2. Bolt flange mounting complete with anode to mating flange on pipe upstand. Remember to fit gasket between flanges and ensure no mechanical load is applied to cable.

1$&@ ,B*$' ,+6$ (+%*,77,*(+Measure the readings of megger value between each anode cable end(tester "+") and hull(tester "-") by megger tester.

> If the megger value is above "0", the installation of anode is O.K. > If the megger value is "0", please check if the anode gets in touch with any steel works(hull)

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WIRING OF SYSTEM

Client to supply all cables and connection boxes between :-

1. Power isolation switch and control panel. 2. Control panel and anodes including earth return leads.

Minimum Recommended Cable Specification

Marine rubber double insulated. Use one core per anode and one core per earth return. The minimum core size for all cable is as follows : -

0 2550

---

25 50 100

metre cable run metre cable run metre cable run

Use 2.5 sq mm core. Use 4.0 sq mm core. Use 6.0 sq mm core.

Each anode is assembled with different cable color for easy identification as follows;

CU (Copper) Anode Cable - Red

AL (Aluminium) Anode Cable - Blue

WIRING UP

An earth (-ve) return must be installed at each separate anode location i.e. if the system supplied is designed for 2 sea chests/strainers then 2 earth returns must be used. Use a min of 1 earth return for every 4 Anodes. Ensure that a separate core of a multicore cable or a completely separate cable is used for this purpose. Use cable as specified above. Connect to the terminals available in the rear of the control unit marked 'earth returns'. We suggest the cable connections are made by welding a bolt on to the strainer or sea chest close to the anodes (but no nearer than 250mm). Fit junction box close to anodes and wire to control panel using recommended cable as per attached wiring diagram and control box drawing.

After switching on, check the polarity of the anodes in relation to the hull. All anodes are to be positive, relative to a negative hull.

Anti-fouling System (M.G.P.S) TROUBLE SHOOTING (NEWMO)

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NO. FAILURE POSSIBLE REASON REQUIRED ACTION

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