MTS Series 505 SilentFlo Hydraulic Power Unit Model 505-180 - Manual (Page 90)

Model 505.60 - 505.180 SilentFlo™ HPU 90
Models 505.60/.90/.120/.150/.180 HPU Maintenance
Maintenance
Models 505.60/.90/.120/.150/.180 HPU Maintenance Schedule
The following table lists the recommended interval for each maintenance
procedure.
Maintenance Schedule
What to Do When to Do It How to Do It
Make daily visual
inspections Before the start of each day’s
testing. Check electronic enclosure ventilation.
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.
Check fluid quality and
condition Every 40 hours or 1 week
(whichever occurs first). Compare the condition of the fluid to that of
your sample, including odor and color.
Check functionality of
warning and interlock
devices Every 40 hours or 1 week
(whichever occurs first). Depress Emergency Stop button(s) to verify
that warning and interlock devices are
functioning properly.
Check the precharge
pressure in optional
accumulator
*
Every 160 hours or 1 month
(whichever occurs first). Refer to the accumulator product
information manual for complete
instructions.
If installed, check the
precharge pressure in the
surge suppressor Every 160 hours or 1 month
(whichever occurs first). Refer to the procedure for precharging the
surge suppressor accumulator.
Conduct external
inspection of the heat
exchanger †
Every 500 hours or 3 months
(whichever occurs first). Look for dents, bulges, leaks, damaged
gaskets, corrosion, and worn, frayed, or
leaking hoses.
Inspect hydraulic hoses,
replace as required Every 1000 hours or 6 months
(whichever occurs first). Look for signs of wear, check for fluid
leaks, tighten connections as needed.
Inspect incoming power
lines for loose
connections or defects Every 1000 hours or 6 months
(whichever occurs first), or when
electric power is disconnected. Have inspection preformed by a qualified
electrician. Observe all local codes and
safety precautions. Ensure all connections
are secure. Screws should be torqued to
values specified on associated labeling.
Replace fluid filter Every 1000 hours or 6 months
(whichever occurs first), or when
the dirty-filter indicator is
displayed. Refer to procedure for replacing the Return
Line Filter.
Check for hydraulic fluid
leakage across piston
style accumulators
*
Every 1000 hours or 6 months
(whichever occurs first). Refer to the accumulator product
information manual for complete
instructions.
Verify functionality of
HPU interlocks ‡
Every 1000 hours or 6 months
(whichever occurs first). Contact MTS Systems Corporation.