Operation
68 MTS Landmark™ Tabletop Load Units - Product Information
Position the Crosshead Manually
This procedure describes how to position a crosshead for a load unit with no hydraulic crosshead lifts
or locks.
Warning:
The crosshead is very heavy.
A dropping crosshead can crush hands, damage grips, and smash specimens.
Observe the following precautions to reduce the possibility of unexpected crosshead movement:
Ensure that the crosshead is locked.
The overhead crane and lifting chains must be able to support the weight of the crosshead.
Center the crane directly over the load unit.
Remove any slack in the lifting chains before unlocking the crosshead.
Completely loosen all crosshead locking bolts before attempting to move the crosshead.
Keep the columns clean and dry. The crosshead cannot be securely clamped to greasy or
damp columns.
The following procedure describes using an overhead crane to position the crosshead. You can use
any device that can lift the weight of the load unit.
Model 370.02 Model 370.10 Model 370.25 Model 370.50
84–114kg (186–252 lb) 57 kg (125 lb) 102 kg (225 lb) 193 kg (425 lb)
Crosshead Weights
1. Center the overhead crane directly over the load unit.
2. Wrap lifting slings around the crosshead. Remove any slack in the lifting chains or slings while
keeping tension to a minimum.
3. Attach the lifting chains to the lifting rings, or wrap lifting slings around the crosshead. Remove
any slack in the lifting chains or slings while keeping tension to a minimum.
4. Remove the covers on the ends of the crosshead. The crosshead covers must be removed to
access the manual locking bolts and to clean and lubricate the bolts. Six 1/4-20 screws (three
top, three bottom) on each cover need 5/32 hex (not included). Hand-tighten when reinstalling
the covers.
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