User's Manual
GM550 v1043 FCC-IC.doc Revision 2 29
Load Cell
WARNING! Capacity and safety factor for load cells and adapter plate assemblies are
calculated for load along the intended axis of load (vertical with the assembly hanging
free); side loading may cause load cell and adapter plate assembly to fail, causing load
to drop. Lifts must be rigged such that the load cell and adapter plate assembly hang
free and not be subjected to side loading.
Important! The load cell antenna must not be in contact with metal.
Important! The load cell antenna must have a clear line of sight to the GS550 display.
Important! The load cell antenna must point to the left or to the right of the boom; it
must not point directly to, or away from, the GS550 display.
Step 1. Install load cell bushings. Assembly of the
load cell and adapter plates must be
configured to the pin size required by the
specific dead end or hook to which it is to
be attached. In all cases, the bushings
must be used where possible to adapt the
holes in the load cell to the pins. Bushings
must be secured with the hex screws
provided, one on each side of the load
cell.
Step 2. Place at least one washer between
adapter plate and pin head or nut on each
end of the pin that links the adapter plates
to the load cell. Additional washers should
be added equally to each end of the pin as
required to inhibit excessive lateral
movement of load cell and adapter plates
along the pin.
Step 3. If the dead end or hook to be connected to
the adapter plates requires a larger
opening, washers may be placed between
the load cell and the adapter plates
equally on both sides of the load cell.
Important! On the smaller of the two pins, the
space between the link and the plates should
not exceed ΒΌ inch either side of the centred
link regardless of washer placement.
Step 4. In all cases the washers must be placed
symmetrically such that the load cell is
centred on the pins.
Step 5. Secure the pins with the nuts and cotter
pins provided.
Step 6. A qualified person must verify every lift assembly before first use and periodically
thereafter, including before any new, difficult or otherwise different lift.
Figure: Typical load cell and adapter
plate assembly installed