MTS Hydraulic Service Manifold Model 293-12B - Manual (Page 29)

Be aware of component movement with hydraulics off
The actuator rod can also drift down when hydraulics are turned off hitting anything in its path. This
uncommanded movement is because of oil movement between the pressure/return ports and oil blow by
across the piston hub. Be aware that this can happen and clear the area around the actuator rod when
hydraulics are turned off.
Know electrical hazards
When the system electrical power is turned on, minimize the potential for electrical shock hazards. Wear
clothing and use tools that are properly insulated for electrical work. Avoid contact with exposed wiring or
switch contacts.
Whenever possible, turn off electrical power when you work on or in proximity to any electrical system
component. Observe the same precautions as those given for any other high-voltage machinery.
Make sure that all electrical components are adequately grounded. Grounds must remain connected and
undisturbed at all times.
Keep bystanders safely away
Keep bystanders at a safe distance from all equipment. Never allow bystanders to touch specimens or
equipment while the test is running.
Wear proper clothing
Do not wear neckties, shop aprons, loose clothing or jewelry, or long hair that could get caught in equipment
and result in an injury. Remove loose clothing or jewelry and restrain long hair.
Remove flammable fluids
Remove flammable fluids from their containers or from components before you install the container or
component. If desired, you can replace the flammable fluid with a non-flammable fluid to maintain the
proper proportion of weight and balance.
Check bolt ratings and torques
To ensure a reliable product, fasteners (such as bolts and tie rods) used in MTS-manufactured systems
are torqued to specific requirements. If a fastener is loosened or the configuration of a component within
the system is modified, refer to information in this product manual to determine the correct fastener, fastener
rating, and torque. Over torquing or under torquing a fastener can create a hazardous situation due to the
high forces and pressures present in MTS test systems.
On rare occasions, a fastener can fail even when it is correctly installed. Failure usually occurs during
torquing, but it can occur several days later. Failure of a fastener can result in a high velocity projectile.
Therefore, it is a good practice to avoid stationing personnel in line with or below assemblies that contain
large or long fasteners.
Series 293 Hydraulic Service Manifold Product Information | 29
Safety