3.Natural/Sour Gas. For air powered products that use natural/sour gas as the power source, pipe away exhaust from the product. Exhaust system shall provide safe removal or recirculation of gas and meet all applicable federal, state, and local safety rules, codes and regulations.
nElectrical Disconnect
Refer to the latest edition of the National Electrical Code (NFPA 70), Article
Conductor Disconnecting Means
A disconnecting means that has a continuous ampere rating not less than that computed in Sections
1.Readily accessible and operable from the ground or floor level.
2.Arranged to be locked in the open position.
3.Open all ungrounded conductors simultaneously.
4.Placed within view of the products contact conductors.
nShut-off Valve
On all air winch installations an emergency
Valve shall be installed within easy range of the operator and positioned so that activation can occur quickly, and any person in the area of the winch can also activate the valve. Train people to its location and use.
Refer to typical air powered winch installation Dwg. MHP2459 on page 11.
A. Air Flow; B. Open; C. Closed; D. Ball Valve; E. Fitting Nipple.
nGuards
Ensure guards are in place and secure prior to operating winch. Ensure they do not interfere with wire rope spooling or winch control operation.
Drum guards are available and recommended by Ingersoll Rand for all winch installations. Guarding moving parts of a winch from accidental contact with personnel shall be a prime consideration.
Additional guards, not provided by Ingersoll Rand, may be required to protect hazardous areas around the winch. Guards should be used to protect against any accidental contact with the winch and other system components.
Guards shall not cause an operator to work in a
nConstruction Cage
WARNING
•Flame cutting or welding cage will produce toxic vapors which could cause death or serious injury.
•Do not stack cages.
•Do not remove or cover warning labels.
•Mounting surface must be flat within 1/16 inch (2.9 mm) and sufficient strength to prevent deflection on product.
•Refer to warning labels for fastener information.
WIRE ROPE SPOOLING
Read “WINCH OPERATION” section prior to operating winch.
WARNING
•Never allow personnel to grab or touch the wire rope when the winch is being operated.
•Immediately stop winch operation if anyone enters an area 3 ft. (1 m) in front of the winch or the area behind the winch that is in line with the load path. Refer to Dwg. MHP2451 on page 11. A.
nWire Rope
All Ingersoll Rand winches use wire rope to connect the load to the winch. Wire rope consists of individual wires which form strands that wrap around the core. Wire rope is attached to the winch drum and as the drum rotates it provides wire rope movement. Wire rope sizes are stated as the diameter of a circle that would enclose the wire rope strands, i.e. 3/8 in., 10 mm, etc. Each wire rope size is available in various rope constructions and material. The construction and size requirements are specified in the Product Information Manuals provided with the winch and are in accordance with the designed capacity of the winch. Only use wire rope with specifications that meet or exceed the rated winch and load capacity.
nInitial Wire Rope Installation
DANGER
•Do not attempt to repair or use damaged wire rope.
•Do not modify wire rope diameter or anchor pocket to accommodate wire rope anchor hardware.
WARNING
•Failure to match wire rope diameter with the correct wire rope anchor hardware can cause wire rope to release from drum and drop the load.
•Ensure wire rope is installed in the proper over/under wound position, refer to the data (name) plate and “Product Information Manual".
CAUTION
•To avoid air winch disc brake damage when installing wire rope, pressurize brake with a minimum of 60 psi (4.1 bar) air from an auxiliary source.
The most important part of wire rope spooling is attaching wire rope to the drum. Different methods are used to fasten the wire rope to the drum. Refer to the Product Information Manuals for the specific method. Ensure wire rope anchor pocket guard is installed when provided with the winch. Check wire rope length is sufficient for task and does not exceed the top layer diameter, approved for the application.
Use only factory approved hardware to attach wire rope to drum.
When initially spooling wire rope onto the winch drum make certain that it bends in the same direction.
on page 11. A. Correct; B. Overwound; C. Winch Drum; D. Wire Rope Spooling; E. Spool; F. Underwound; G. Incorrect. It is also necessary to apply a tensioning load to the wire rope to achieve good spooling. It is recommended that a local professional rigging company be used to initially spool wire rope onto the drum.
When installing new wire rope it is important that all wraps of the first layer be tight on the drum and adjoining the previous wrap. Open or wavy winding will result in wire rope damage when multiple layers are used. Adjacent turns should be tight against each other. If gaps occur between wraps, STOP winch and tap wire rope with a composite or wooden mallet, so that the strands are snug but not interlocked. Do not restart drum rotation until everyone is clear. The succeeding layers of wire rope should wind across the preceding layer of wire rope without gaping or bunching.
Ensure that the correct length of wire rope is fitted. This is particularly important as it may be necessary to fit specific lengths of wire rope for particular applications and wire rope reeving combinations.
-Too short a wire rope could result in the wire rope completely paying out and the wire rope anchorage on the drum having to carry the full load.
-Too long a wire rope could exceed the drum’s spooling capacity, causing the wire rope to ride over the drum flange resulting in the load dropping, severe damage, wire rope crushing or complete winch failure.
It is good practice to check the wire rope length whenever the structure is changed, wire rope is changed or reeving altered.
To be certain that wire rope spools evenly on drum, use a spooling device to keep tension on wire rope, approximately 10% of the working load is recommended.
Maintain a fleet angle between the lead sheave and winch of no more then
Tight Winding:
The entire length of wire rope should be wound on the drum tightly and correctly as this will facilitate good winding during operation. Poor or incorrect spooling can:
-shorten wire rope life cause erratic winch operation.
-cause wire rope to drop.
-cause wire rope to bunch.
-be less than distance to flange dimension.
Refer to Dwg. MHP2453 on page 11 for spooling conditions to be avoided. A. Sheave Flange and Wire Rope Wear; B. Wire Rope Wear; C. Wire Rope Wound too Tightly Compressed; D. Uneven Spooling Bunched Wire Rope; E. or; F. When the Fleet Angle is too Small the Result is Poor Winding.
Spooling area should be clean and free of debris. Care should be taken to ensure that wire rope is clean and properly lubricated as it is spooled onto drum. Wire rope should not be allowed to drag or touch the ground during spooling.
Use only clean serviceable wire rope on winches. Inspect wire rope carefully as it is being spooled onto drum. Watch for broken or loose strands or other signs of damage or unserviceable wire rope. Refer to this manual and the Product Information Manuals for wire rope inspection requirements.
WARNING
•Use of wire rope sizes other than recommended will greatly decrease the life of the wire rope.
CAUTION
•Upon completion of spooling and prior to final installation, secure wire rope to drum. This will prevent wire rope from loosening on the drum.
•Keep all
Form MHD56250 Edition 5 | 7 |
