
AnnuallyBiweeklyWeeklyDailyCalendar Time using 8 hour Running
Time rate per day
2,0001,500100050080408Running Time-Hours
MTSMTSMTSMTSCheck response to full stroke waveform,
visual and audible.
MTSMTSMTSMTSCheck displacement control valve balance.
MTSMTSMTSMTSCheck valve dither response.
Maintenance Intervals
The following table lists the recommended interval for each of these procedures.
Load Unit Maintenance Intervals
When to Do ItWhat to Do
Before the start of each day’s testing.Make daily inspections.
Depends on the operating environment; more often
in humid environments.
Take rust prevention precautions.
At least once a month.Perform label inspection.
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 HSM filter.
When servovalve performance has deteriorated.Perform Model 252 Servovalve maintenance:
change filter.
120 | MTS TestLine Test System Operation
Maintenance
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