MTS Series 505 SilentFlo Hydraulic Power Unit Model 505-30 - Manual (Page 59)

505.20/.30 HPU Maintenance Schedule
Model 505.20 - 505.30 SilentFlo™ HPU Maintenance 59
Check auto-cooling
circuit functionality Every 1000 hours or 6 months
(whichever occurs first) Perform “Adjusting the Auto-Cooling”
procedure.
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.
Check motor overload
functionality
‡
Every 1000 hours or 6 months
(whichever occurs first). Contact MTS Systems Corporation.
Verify proper operation of
hydraulic valves
‡
Every 1000 hours or 6 months
(whichever occurs first). Contact MTS Systems Corporation.
Conduct a hydraulic fluid
analysis Every 1000 hours or 6 months
(whichever occurs first), or sooner
if duty is severe
§
.
Obtain a sample and submit it for analysis.
MTS recommends that the sample be
analyzed by our contracted service. Ask
your Field Service Engineer for
information.
Refer to the “Sampling the Hydraulic Fluid”
procedure.
Replace hydraulic fluid
§ If fluid analysis is not to
specifications. Refer to the “Replacing the Hydraulic
Fluid” procedure.
Conduct internal
inspection of heat
exchanger
†,‡
Every 2000 hours or yearly
(whichever occurs first). Look for signs of fouling or corrosion,
conduct chemical or mechanical internal
cleaning as inspection warrants.
Refer to the “Inspecting the Heat
Exchanger” procedure.
Consult the Heat Exchanger Care and
Water Quality Guide for more information.
Check case drain flow of
hydraulic pump Every 2000 hours or yearly
(whichever occurs first). Contact MTS Systems Corporation.
Replace heat
exchanger
†,‡
Every 5000 hours or 3 years
(whichever occurs first) Replace as inspection warrants. Contact
MTS Systems Corporation for special
training.
Inspect the motor and
pump. Replace motor
bearings ‡
Every 30,000 hours or 5 years
(whichever occurs first). Motors may be rewound or replaced as
required by inspection.
Hydraulic pumps may be rebuilt or replaced
as required by inspection.
Contact MTS Systems Corporation for
special training
Replace hydraulic hoses
‡ Every 10,000 hours or 5 years
(whichever occurs first) Contact MTS Systems Corporation for
special training.
Maintenance Schedule (Continued)
What to Do When to Do It How to Do It