Actuator; Weekly; Monthly; Yearly - MTS Systems Landmark 370 Series Product Information

Rapid flow rates with pressure differentials of more than 2.1 MPa (300 psi) across the
input check valve can damage the valve seal(s).
Avoid rapid and extreme pressure transitions.
Do not allow rapid flow rates. Open the regulator shut-off valve only far enough to
permit a gradual transfer of gas.
6. Slowly open the regulator shut-off valve until gas is heard escaping from the accumulator
charging kit bleed valve. Allow gas to slowly escape for approximately ten seconds, and then
close the bleed valve. Immediately close the regulator shut-off valve before the pressure
reading on either the high or low charging kit pressure gage exceeds the pressure level of the
accumulator.
7. Open the locknut (or open the chuck valve for a core-type valve). Slowly open the regulator
shut-off valve until the pressure indicator on either the high or low charging kit pressure gage
begins to rise. When the pressure is at the required pressure level (recorded on the
accumulator), close the regulator shut-off valve.
8. Close the locknut (or close the chuck valve for a core type valve).
9. Open the bleed valve on the accumulator charging kit and remove the chuck valve from
the accumulator.
10. Install the valve stem cap and protective cover. Close the valve on the nitrogen bottle.

Actuator

The actuator is designed for extended periods of operation without extensive maintenance
requirements.
A summary of the routine maintenance procedures is listed below:

Weekly

Clean exposed areas of the actuator piston rod with a clean, dry, lint-free rag. If the actuator is
continually exposed to a dirty operating environment, clean the piston rod on a daily basis.

Monthly

Inspect the actuator piston rod and seals for excessive wear or leakage. Small scratches in the axial
direction of the piston rod or polishing of the rod surface is considered normal operating wear.

Yearly

Change actuator seals if necessary. Actuator assemblies can require more or less frequent seal
changes depending on usage. External oil leakage and/or decreased performance are indicators of
seal wear. Seal replacement is considered a service procedure; contact your MTS Service Engineer
for additional information.
MTS Landmark™ Tabletop Load Units - Product Information
Maintenance
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