6.3Adjustment of Pressure Switches for Lock Pressure.

1.Adjust pressure to 115 bar.

Use horizontal adjusting screw on pump pressure compensatory valve.

2.Adjust pressure switch until green lamp on control panel comes on. Use alternative voltmeter and measure on cables for pressure switches.

7.Test Program – Periodical Control

Triplex Shark Jaw Type H-700

Triplex Guide Pins Type S-300

7.1The Triplex system is installed and used under rough conditions. Due to mechanical stress, vibrations and aggressive atmosphere and the equipment needs to be maintained carefully for safe operation.

A functional dry run test is recommended before every anchor handling operation.

The owner is responsible for all maintenance on the Triplex equipment. He must perform his own routines and schedules after the following guidelines.

7.2Checking List – Periodic Control Mechanical / Hydraulic.

Procedure for Personal Safety See Section 1; Have to be Followed!

1.Dismantle manhole cowers on Shark Jaw and Guide Pins.

2.Check H.P. hoses, pipes and fittings. Poor H.P. hoses to be changed.

3.Check that all bolts are properly tightened.

4.Check that link joints are over centre when jaws are in locked position. See drawing B-2209.

5.Check wears on jaws, rollers and bearings. Repair and change where necessary.

6.Movement of bolts and link joints to be controlled under the function test. Look carefully for cracks and deformations.

7.Check sea water drain pipes from Shark Jaw and Guide Pins.

8.Check oil lever in hydraulic oil tank.

9.Starts pump and check that hydraulic pressure raise to max. working pressure (175 bar).

10.Check accumulator nitrogen pressure: 35 Bar.

It’s important first to empty the accumulators for oil by opening the ball valve on the power unit. Then connect gas-filling equipment according to accumulator precharging procedure.

11.Auxiliary equipment as lubrication system to be checked according to the grease system manual. (LINCOLN)

12.Check that gaskets for manhole covers are in good condition.

13.Fit all manhole covers.

7.3Checking List – Periodic Control Electrical

Procedures for Personal Safety see Section 1. Have to be followed!

1.Switch power off.

2.Perform Visual inspection for mechanical damage on:

-Junction boxes, control panels and cabinets.

-Cables.

-Indicators and switches.

-Electrical components mounted on the entire Triplex equipment / delivery.

3.Open every electrical cabinet, panel and boxes one by one, inspect for damage and heat exposure.

4.Control that all components are firm fastened, and relays are firm in their sockets.

5.Screw connections for every electrical termination to be carefully tightened.

6.Damages and other un-regularities must corrected immediately.

7.Power on, and perform complete functional test programs:

-Normal operation of all functions.

-Quick release.

-Emergency release.

8.Check emergency power (24 V) to junction box.

9.Remount all panels and doors / covers.

7.4 Testing without Load – Yearly Testing.

5Pump lamp auto flicker

6Emergency stop

7Wire lift pin up

8Wire lift pin down

9Starboard jaw close

10Starboard jaw open

11Port jaw close

12Port jaw open

13Jaws close simultaneously

14Jaws open simultaneously

19Jaws locked light

20Guide pins up

21Guide pins down

22Towing pins up

23Towing pins down

24Emergency release

25Quick release (Jaws only)

26Reset Quick release buttons

27Oil temperature high alarm light

28Oil level alarm light

29Emergency power supply junction box connection (193-194)

30Emergency power supply control panel bridge connection (77-78)

31Jaw in lock position marks in line check, starboard

32Jaw in lock position marks in line check, port

7.5 Load Test – Emergency Release – 5 Year Control.

Wire with required strength to be locked in the Shark Jaw. Make emergency release with a load of 90 tons on the wire (Jaws).

Anchor Handling Course, chapter 6