MTS Landmark Floor Standing - Manual (Page 66)

Manually Clamp the Crosshead
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.
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.
Caution:
The crosshead can slowly drift down the columns if the locks are turned off and when hydraulic
pressure is turned off.
The crosshead can damage any test fixtures, grips, and specimen in its path.
Unlock the crosshead only to reposition it. Always lock the crosshead after you have repositioned
it and never leave the crosshead unlocked.
The manual clamping procedure is a four step process. The four steps allow the crosshead to be clamped
evenly.
Before clamping the crosshead in place, you must have determined the proper crosshead position and moved
the crosshead to that position.
Tighten the crosshead clamping bolts according to the torque settings shown in the Crosshead Clamping
Bolts Torque Values table found in the next section.
1. Torque the crosshead bolts to the value in Step 1.
2. Torque the crosshead bolts to the value in Step 2.
3. Torque the crosshead bolts to the value in Step 3.
4. Torque the crosshead bolts to the value in Step 4.
66 MTS Landmark™ Floor Standing Load Units Product Information
Operation