MTS Acumen Electrodynamic Test System Load Frame User Guide - Manual (Page 21)

Crosshead Emergency Operation
The load frame has a manual lift actuation feature. It consists of manual method to turn the lift drive system
if the load frame or lift system lose power. In such an event, an external 10mm hex bolt can be accessed
from the underside of the crosshead. A 10mm socket wrench is required to actuate the lift system. The label
shows which direction to turn the wrench to either raise or lower the crosshead.
There are several scenarios in which the manual lift actuation system would be useful.
• In the event of a loss of facility power, a specimen can be removed from the system.
• If there is a system malfunction that prevents running the lifts via typical electrical means, the manual
approach can be used to remove specimens.
• In the event of a user, tool, fixture or specimen becoming entrapped in the load frame, and power is
removed either via E-stop activation, power switch activation or power cord removal, the entrapped person
or tool can be removed using the manual mechanism.
The following figure shows a close-up of the system load cell mounted on the actuator and a red arrow pointing
to the location of the hex bolt.
The manual locks must be unlocked for the system to move the crosshead.
Location of Manual Crosshead Adjustment in Relationship to Actuator Rod
MTS Acumen™ Electrodynamic Test System 21
Safety