MTS Landmark Floor Standing - Manual (Page 105)

Caution:
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™ Floor Standing Load Units Product Information 105
Maintenance