19. Boom extension 1 and boom extension 2 move simultaneously. The winch
rope is fully compensated for boom extension when boom extensions 1 & 2 are
being telescoped. Boom extension 3 is powered on the MAC 25 however there
is no compensation of the winch rope as the third extension is being extended.
Operator to take care to extend rope as required while boom extension 3 is
being telescoped.
20. Do not allow the winch rope to unwind fully. Always ensure a minimum of
2 wraps of rope remain on the winch drum.
21. Rated Capacity depends on tyre rating, tyre condition and tyre inflation
pressure. All tyres must be in good condition and must be inflated to the
recommended pressure before attempting a lift.
22. Pick & carry operation is permitted through the full Articulation range, however,
Rated Capacity is reduced when articulating. On the series 4 MAC 25, the LMI
dynamically calculates rated capacity taking crane tilt and articulation into
account.
23. The maximum speed for pick & carry operation is 0.4m/s (1.44km/h). The
transfer case shall be set to low range.
24. Operation of this crane in excess of the Rated Capacity and disregard of the
instructions is hazardous.
LIFT AND CARRY OPERATION
Observe the following during travel with load on the crane:
Keep the boom tip as close to the ground as possible by using:
The MINIMUM practical boom length
The MINIMUM practical Boom Angle.
Keep the load as CLOSE to the ground as possible.
Keep the load as CLOSE to the front of crane as possible
Use the MINIMUM Articulation angle practical - REMEMBER the crane will side tilt
when articulated and hence the hook will move towards the direction of Articulation
whilst steering.
Load swing greatly reduces stability – REMEMBER to tagline loads to prevent
pendulum motion of the load. Travel and crane motions should be applied gently
to minimise this effect.
Always REMEMBER:
On flat ground - Increased articulation reduces load capacity
On sloping ground – Downhill articulation reduces load capacity.
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