Owner manual

AnnuallyMonthlyWeeklyDailyCalendar Time using 8 hour
Running Time rate per day
10,0005,0002,0001,5001000500160408Running Time-Hours
MTSDetermine if replacement or
rebuild of pump
requiredFootnote.
MTSDetermine if replacement or
rewind of motor is
requiredFootnote.
MTSRecommend hydraulic fluid
change & clean pump inlet
strainer
Models 505.60/.90/.120/.150/.180 HPU
Maintenance Schedule
The following table lists the recommended interval for each maintenance procedure.
Maintenance Schedule
How to Do ItWhen to Do ItWhat to Do
Check electronic enclosure ventilation.Before the start of each
day’s testing.
Make daily visual inspections
Check dirty filter indicators.
Look for signs of fluid leakage.
Check the fluid level in the sight gage
and replenish as required.
Check system operating pressure and
adjust as required.
Compare the condition of the fluid to that
of your sample, including odor and color.
Every 40 hours or 1
week (whichever occurs
first).
Check fluid quality and condition
Depress Emergency Stop button(s) to
verify that warning and interlock devices
are functioning properly.
Every 40 hours or 1
week (whichever occurs
first).
Check functionality of warning
and interlock devices
*
Generally, an inspection would be done every 10,000 hours. Replacement/repair is typically done at 30,000
hours.
74 Series 505G2 SilentFlo™ Hydraulic Power Unit Product Information
Maintenance