28 The GS550 System
Load Cell
W
ARNING
! 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.
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 bush-
ings 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.
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.
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 ¼ inch either side of the centred
link regardless of washer placement.
4. In all cases the washers must be placed symmet-
rically such that the load cell is centred on the
pins.
5. Secure the pins with the nuts and cotter pins
provided.
6. A qualified person must verify every lift assembly
before first use and periodically thereafter, includ-
ing before any new, difficult or otherwise different
lift.
Figure: Typical load cell and adapter
plate assembly installed
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