Preliminary Pages
4
M47-17035-EN
Warnings
Hazard - Press the Emergency Stop button whenever you consider that an unsafe
condition exists.
The Emergency Stop button removes hydraulic power or electrical drive from the testing
system and brings the hazardous elements of the system to a stop as quickly as
possible. It does not isolate the system from electrical power, other means are provided
to disconnect the electrical supply. Whenever you consider that safety may be
compromised, stop the test using the Emergency Stop button. Investigate and resolve
the situation that caused the use of the Emergency Stop button before you reset it.
Flying Debris Hazard - Make sure that test specimens are installed correctly in grips
or fixtures in order to eliminate stresses that can cause breakage of grip jaws or
fixture components.
Incorrect installation of test specimens creates stresses in grip jaws or fixture
components that can result in breakage of these components. The high energies
involved can cause the broken parts to be projected forcefully some distance from the
test area. Install specimens in the center of the grip jaws in line with the load path.
Insert specimens into the jaws by at least the amount recommended in your grip
documentation. This amount can vary between 66% to 100% insertion depth; refer to
supplied instructions for your specific grips. Use any centering and alignment devices
provided.
Hazard - Protect electrical cables from damage and inadvertent disconnection.
The loss of controlling and feedback signals that can result from a disconnected or
damaged cable causes an open loop condition that may drive the actuator or crosshead
rapidly to its extremes of motion. Protect all electrical cables, particularly transducer
cables, from damage. Never route cables across the floor without protection, nor
suspend cables overhead under excessive strain. Use padding to avoid chafing where
cables are routed around corners or through wall openings.
High/Low Temperature Hazard - Wear protective clothing when handling equipment
at extremes of temperature.
Materials testing is often carried out at non-ambient temperatures using ovens,
furnaces or cryogenic chambers. Extreme temperature means an operating
temperature exceeding 60 °C (140 °F) or below 0 °C (32 °F). You must use protective
clothing, such as gloves, when handling equipment at these temperatures. Display a
warning notice concerning low or high temperature operation whenever temperature
control equipment is in use. You should note that the hazard from extreme temperature
can extend beyond the immediate area of the test.
