MTS Landmark Floor Standing - Manual (Page 80)

When to Do It What to Do
When the columns become greasy or dirty. Clean the load unit columns.
Depends on the operating environment; more often in
humid environments. Prevent rust.
When the load unit sits unevenly. Maintain airmount pressures.
When the crosshead sticks or moves jerkily on the
column. Adjust the hydraulic locks.
Whenever they begin to be hard to tighten or sticky
when loosened. Lubricate the crosshead locking bolts.
When the bolts begin to loosen or tighten stiffly (manual
locking crossheads only).
After actuator or force transducer installation; when a
better alignment between the two is desired. Align the force transducer.
At least once a month; more often as required by
operating conditions. Check the accumulators’ precharge pressures. Adjust
if necessary.
Weekly; more often as required by operating conditions. Clean exposed actuator piston rod.
When the indicator is in bypass position or when
hydraulic fluid is changed. Change the HSM filter.
When servovalve performance has deteriorated. Change the filter in the servovalve.
After the valve balancing procedure (electrical
compensation) has been completed and the results
are judged unsatisfactory. Adjust mechanical null in the servovalve.
Calibration intervals depend on system requirements
and are typically performed during scheduled Perform sensor calibration.
maintenance by MTS trained personnel. Sensors can
include LVDT, load cell, and extensometer.
Daily Inspections
Before the start of each day’s testing, do a quick inspection of the load unit. Following are typical things that
should be checked daily:
• Ensure that there are no leaks from lifts or locks.
• Check the drip pan and ensure that there are no leaks from the actuator, hydraulic service manifold,
servovalve, or accumulators.
• Ensure that electrical connections are tight, with no frayed or poorly routed cables.
• Ensure that hoses are routed properly, not wearing, and the fittings are not leaking.
80 MTS Landmark™ Floor Standing Load Units Product Information
Maintenance