MTS Material Test Systems - Manual (Page 71)

As a guideline, for a test system that operates eight hours per day, one week will equal 40 hours, and one
month will equal 160 hours. For a test system that operates up to 24 hours per day, one week will equal 160
hours and one month will equal 720 hours.
When to perform visual checks
Routine maintenance procedures that are scheduled on a daily or weekly basis usually involve visual checks
only, and should not interfere with the operation of your test system. These checks will help you assess which
procedures must be performed before running the next test. For example, the dirty filter indicator on the HPU
signals that it is time to clean or change the filter.
You can perform these visual checks at the start of each day and incorporate them into your preparations to
run a test.
Note:
It is highly unlikely (unless you are running an extremely long durability type of test) that you should
need to stop a test simply to perform a routine maintenance procedure.
Changing the intervals
You can change the time interval for performing maintenance checks, based on the operating conditions for
your system. Operating conditions that affect the maintenance schedule include air quality, temperature,
humidity, how often you run tests, and whether you use a pump room or a hydraulic power unit to supply
hydraulic fluid to the system. Keep a log to observe trends in your system, then adjust your maintenance
schedule as needed. For example, you might find that you do not have to perform daily checks of the hydraulic
fluid, and decide to check it once a week instead.
Additional maintenance
Because of the variations in system configurations, the maintenance schedule table lists the typical procedures
for the associated products. Additional maintenance procedures might be required depending on the specific
product model. Refer to the product manuals for complete maintenance information.
Additional maintenance procedures can be required whenever you notice decreased system performance.
An example of this type of maintenance is servovalve filter replacement. Many of these procedures require
additional training and should be performed by MTS service personnel.
Information about analyzing hydraulic fluid is contained in the MTS Fluid Care Guide that accompanies each
hydraulic power unit, and in the appendices of maintenance manuals
Table 12: Routine Maintenance
5 +
Years 2 Year 1 Year 6
months 3
months 2
months 1
Month 1
Week Daily Calendar time
10,000 4,000 2,000 1000 500 320 160 40 8 Running time - Hours
Hazard labels
X Inspect for legibility
- Replace as required
Hydraulic Hoses
MTS Material Test System Operation 71
8.0 Routine Maintenance