MTS Series 311 Load Frame - Manual (Page 51)

Maintenance Intervals
Series 311 Load Frame Maintenance 51
Maintenance Intervals
The following table lists the recommended interval for each of these procedures.
What to Do When to Do It
How to Do It
*
*
For maintenance items listed that do not have a corresponding procedure in this manual, call the MTS
HELPLine.
Making daily inspections Before the start of each day’s testing. See “Making Daily Inspections” on
page 52.
Cleaning the load frame
columns When the columns become greasy or
dirty. See “Cleaning the Columns” on page
53.
Preventing rust Depends on the operating environment;
more often in humid environments. See “Preventing Rust” on page 54.
Checking the
accumulators’ precharge
pressures At least once a month; more often as
required by operating conditions. See “Checking the Accumulators’
Precharge” on page 55.
Bleeding the hydraulic
lift cylinders When the crosshead begins to move
roughly; if the sealed side of the
hydraulic supply is opened to air. See “Bleeding the Hydraulic Lift
Cylinders” on page 56 .
Replacing the hydraulic
lift cylinder seals †
† This cannot be repaired by the customer; call the MTS HELPLine.
When hydraulic fluid begins leaking out
of the lift cylinders. Contact MTS Systems Corporation to
schedule service.
Adjusting the hydraulic
locks When the crosshead sticks or moves
jerkily on the column. See “Adjusting the Hydraulic Locks”
on page 59.
Replacing the hydraulic
lock seals
†
When hydraulic fluid begins leaking
from the locks. Contact MTS Systems Corporation to
schedule service.
Aligning the force
transducer After installing the actuator or force
transducer; when a better alignment
between the two is desired. See “Aligning the Force Transducer”
on page 61.
Servicing the actuator † When the actuator begins leaking
hydraulic fluid or its performance
becomes poor. (see your actuator manual)