MTC
Anchor Handling Course
2. OPERATION:
2.1OPERATION OF THE SHARK JAW CONTROL PANEL BUTTON AND SWITCHES.
PUMP START:
Starts hydraulic pump.
The pump works at constant high pressure. It is equipped with a time relay which will let the PUMP START LAMP start flashing if it has been switched on but not used for a set period of time.
NOTE! |
Ensure that valves on suction line are opened before starting up. |
PUMP STOP: |
Stops hydraulic pump. |
WIRE LIFT UP: |
Raises the wire lift pin. |
WIRE LIFT DOWN: Lowers the wire lift pin.
The following controls of the panel are arranged so that those on the right side of the panel are connected to port and those on the left side to starboard.
LOCK-O-OPEN:
Each of these two switches raises locks and opens one Jaw of the Shark Jaw respectively. These switches can be operated simultaneously or individually.
When in the central "0" position each switch stops its respective Jaw of the Shark Jaw in whatever position it has reached. This is the normal off position for the switches when the Shark Jaw is not in use.
When turned to the LOCK position each switch raises and locks its respective Jaw of the Shark Jaw. When turned to the OPEN position each switch lowers its respective Jaw of the Shark Jaw.
M:\ANCHOR HANDLING\Course Material\Training Manual New\Chapter 06\1.0 TRIPLEX-Shark Jaws.doc
Chapter 06 |
Page 5 |
MTC
Anchor Handling Course
LOCK-O-OPEN:
When full lock pressure is obtained the LOCK PRESSURE lamps comes on, and when the locking cylinders are in the extended position, the JAW IN POS. lamps comes on. The work deck-operator inspects the marks on the link joints, and if the marks indicate that the jaws are locked, he turns the lever located in the JAW POS. ACCEPT box to JAW LOCK POSITION ACCEPTED.
On the control panel the ALARM light goes out and the JAWS LOCKED light comes on.
The jaws are completely locked when the link joints passes 180 degrees, and marks on link joints are on line.
When the Shark Jaw is locked, both switches remain at the LOCK position. If the lock pressure falls on either one or both jaws or the locking cylinders are not in the extended position the respective LED goes out. Then the JAWS LOCKED -right goes out and the ALARM LIGHT comes on. Under JAWS LOCKED conditions the PUMP STOP cannot be operated.
QUICK RELEASE: Before operating the QUICK RELEASE, Guide Pins and Wire Lift Pin must be in level with the deck.
Two push buttons.
To operate the QUICK RELEASE with only the jaws in raised position both OPEN-O-LOCK switches must first be moved to the central "0" position and the JAW LOCK POSITION ACCEPT lever turned to JAW READY FOR OPERATION. The alarm light goes out and the buzzer and alarm on deck comes on when the QUICK RELEASE button cover is opened. Then both QUICK RELEASE buttons must be pressed at the same time.
The system is reset by pressing and reset the E-STOP button.
EMERGENCY RELEASE: Two push buttons on the emergency release panel. For retracting of Guide Pins, wire lift pin first and then the jaws.
To operate the EMERGENCY RELEASE the both buttons must be pressed at the same time. The buzzer comes on when the EMERGENCY RELEASE button cover is opened. When the buttons are pressed the lights above them will come on. The system is reset by pressing the E-STOP button.
GUIDE PIN UP: GUIDE PIN DOWN: EMERGENCY STOP:
Two buttons, which when pressed raise the respective guide pins.
Two buttons, which when pressed lower the respective guide pins.
E-STOP button. When pressed the current to all functions of the control panel is cut.
M:\ANCHOR HANDLING\Course Material\Training Manual New\Chapter 06\1.0 TRIPLEX-Shark Jaws.doc
Chapter 06 |
Page 6 |
MTC
Anchor Handling Course
OIL LEVEL LOW -TEMP HIGH:
LAMP TEST:
If the oil level in the hydraulic oil tank becomes too low
or the oil temperature gets too high, the OIL LEVEL LOW / TEMP HIGH lamp comes on.
When the lamp test button is activated, all lamps on the panel will light up.
CONTROL PANEL
M:\ANCHOR HANDLING\Course Material\Training Manual New\Chapter 06\1.0 TRIPLEX-Shark Jaws.doc
Chapter 06 |
Page 7 |
MTC
Anchor Handling Course
Marks for Locked on Hinge Link
The marks welded on the links indicate whether the Jaws are locked or not. The links MUST pass 180 degrees to achieve “Locked Position”.
M:\ANCHOR HANDLING\Course Material\Training Manual New\Chapter 06\1.0 TRIPLEX-Shark Jaws.doc
Chapter 06 |
Page 8 |