MTS Series 505 SilentFlo Hydraulic Power Unit Model 505-30 - Manual (Page 58)

Model 505.20 - 505.30 SilentFlo™ HPU 58
505.20/.30 HPU Maintenance Schedule
Maintenance
505.20/.30 HPU Maintenance Schedule
Scheduling
maintenance
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 status of dirty filter indicator.
Look for signs of fluid leakage.
Check the fluid level in the sight gage.
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.
Depress fault indicator light bezel to test
bulb.
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.
Check the precharge
pressure in the surge
suppressor Every 160 hours or 1 month
(whichever occurs first). See “Precharging the Surge Supressor
Accumulator.”
Conduct external
inspection of the heat
exchanger
†
Every 500 hours or 3 months
(whichever occurs first). Look for dents, bulges, and leaks, damaged
gaskets, corrosion, and worn, frayed, or
leaking hoses.
See “Inspecting the Heat Exchanger.”
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 lights. Refer to “Replacing the Return Line Filter.”
If your HPU has an optional high pressure
filter, perform “Replacing the Return Line
Filter.”