10
WingMan
5. Use (continued)
b) Operation
4:1
Anchor
Load
4:1 mechanical advantage.
If the operator is the load,
the system becomes a 5:1.
5:1
Load
5:1 mechanical
advantage.
Anchor
Function test -
Before each use, verify that the device is working properly. Always use a
backup safety system. Anchor one end and gradually apply load to the WingMan. Make
sure the rope is locked in the double pulley with releasing handle. Grip the running end
of rope with one hand and then with the other hand slowly open the handle to allow
the rope to pass through and load to begin lowering. Ease pressure on the handle so
it closes and make sure the rope locks. With a moderate load on the system, open the
handle and make sure the handle snaps closed. Pull on the haul/tailing rope and make
sure the sheaves turn freely and you hear a clicking sound.
Setup -
Secure one end to an anchor or appropriate full strength anchor point on
harness. Keep the releasing handle within reach of the operator.
Depending on orientation the WingMan can be used as a 4:1 mechanical advantage
system or a 5:1 mechanical advantage system.
4:1 Mechanical advantage -
If the double pulley with becket is attached to the anchor
so the double with releasing handle is the movable load, and if the operator is not the
moveable load, the system provides a 4:1 mechanical advantage. If the operator is the
moveable load, the system becomes a 5:1.
5:1 Mechanical advantage
- If the double pulley with releasing handle is attached to
the anchor and the double with becket is the movable load, the system provides a 5:1
mechanical advantage. Note: the handle must be within reach of the operator.