MTS Series 646 Hydraulic Collet Grips - Manual (Page 30)

Series 646 Hydraulic Collet Grips 30 Safety Information
hydraulic pressure to dissipate before you remove and replace the hose or any
pressurized component.
Stay clear of moving
equipment/avoid crush
points
Stay clear of mechanical linkages, connecting cables, and hoses that move
because you can get pinched, crushed, tangled, or dragged along with the
equipment. High forces generated by the system can pinch, cut, or crush anything
in the path of the equipment and cause serious injury. Stay clear of any potential
crush points. Most test systems can produce sudden, high-force motion. Never
assume that your reactions are fast enough to allow you to escape injury when a
system fails.
Know the causes of
unexpected actuator
motions
The high force and velocity capabilities of MTS actuators can be destructive and
dangerous (especially if actuator motion is unexpected). The most likely causes
of unexpected actuator response are operator error and equipment failure due to
damage or abuse (such as broken, cut, or crushed cables and hoses; shorted wires;
overstressed feedback devices; and damaged components within the servocontrol
loop). Eliminate any condition that could cause unexpected actuator motion.
General Precautions for Environmental Components
Observe the following precautions when operating the grips:
• Make sure controller detectors are set to minimize the chance of the grip
contacting the furnace. Generally this involves setting displacement limits
to restrict actuator rod travel.
• When positioning the crosshead during specimen installation, be careful not
to allow contact of machine components with the environmental chamber or
furnace. Machine components can include grips, attachment kits, the
crosshead, pullrods, etc.
• Be sure to read and understand the safety data sheets of the materials,
chemicals, and fluids used regarding any combustibility and toxicity
characteristics.
• After operation at elevated temperature, be sure to allow components to cool
before handling. Components can include grips, specimen, environmental
chamber or furnace surfaces.
• Use protective gear (such as gloves) if it is necessary to handle hot objects.
Hot objects can include specimens tested at elevated temperatures or
furnace surfaces.
• When using an environmental chamber or furnace, be aware of possible
crush points between the grip and any attachment fixture and the chamber or
furnace.
Hazard Placard Placement
Hazard placards contain specific safety information and are affixed directly to the
system so they are plainly visible.
Each placard describes a system-related hazard. When possible, international
symbols (icons) are used to graphically indicate the type of hazard and the
placard label indicates its severity. In some instances, the placard may contain