Warning
Shut off the supply of compressed gas and
discharge residual gas pressure before dis-
connecting any compressed gas coupling
Do not release gas connections without first disconnect-
ing the gas supply and discharging any residual pressure
to zero.
Use protective shields or screens if any pos-
sibility exists of a hazard from the failure of
a specimen, assembly or structure under
test.
Use protective shields whenever a risk of injury to opera-
tors and observers exists from the failure of a test speci-
men, assembly or structure, particularly where explosive
disintegration may occur. Due to the wide range of speci-
men materials, assemblies or structures that may be tested,
any hazard resulting from the failure of a test specimen, as-
sembly or structure is entirely the responsibility of the
owner and the user of the equipment.
Protect electrical cables from damage and
inadvertent disconnection.
The sudden loss of controlling and feedback signals
which can result from a disconnected or damaged cable
causes an open loop condition which may drive the ac-
tuator or crosshead rapidly to its extremes of motion.
Protect all electrical cables, particularly transducer ca-
bles, from damage. Never route cables across the floor
without protection, nor suspend cables overhead under
excessive strain. Use padding to avoid chafing where ca-
bles are routed around corners or through wall openings.
Preliminary Pages
vii
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