Epson LS20, Manipulator Manual, Page: 75 / 176

Maintenance 2. General Maintenance
LS20 Rev.4 63
2.1.2 Inspection Point
Inspection While the Power is OFF (Manipulator is not operating)
Inspection Point Inspection Place Daily Monthly Quarterly Biannual Annual
Check looseness or backlash of
bolts, screws.
Tighten them if necessary.
(For the tightening torque, refer to
Maintenance: 2.4 Tightening
Hexagon Socket Head Cap Bolts
.)
End effector mounting bolts √ √ √ √ √
Manipulator mounting bolts √ √ √ √ √
Each arm locking bolts √ √ √ √ √
Bolts, screws around shaft √
Bolts, screws securing motors,
reduction gear units, etc.
√
Check looseness of connectors.
If the connectors are loosen, push it
securely or tighten.
External connectors on
Manipulator (on the connector
plates etc.)
√ √ √ √ √
Manipulator cable unit √ √ √ √
Visually check for external defects.
Clean up if necessary.
External appearance of
Manipulator
√ √ √ √ √
External cables √ √ √ √
Check for bends or improper
location. Repair or place it properly
if necessary.
Safeguard etc. √ √ √ √ √
Check tension of timing belts.
Tighten it if necessary.
Inside of Arm #2 √ √
Grease conditions Refer to Maintenance: 2.3 Greasing .
Battery Refer to Maintenance:11. Lithium Battery and Boards
Inspection While the Power is ON (Manipulator is operating)
Inspection Point Inspection Place Daily Monthly Quarterly Biannual Annual
Check motion range Each joint √
Move the cables back and forth
lightly to check whether the cables
are disconnected. External cables
(including cable unit of the
Manipulator)
√ √
Push each arm in MOTOR ON
status to check whether backlash
exists.
Each arm √
Check whether unusual sound or
vibration occurs.
Whole √ √ √ √ √
Measure the accuracy repeatedly by
a gauge.
Whole √
Turn ON and OFF the brake release
switch and check the sound of the
electromagnetic brake. If there is
no sound, replace the brake.
Brake √ √ √ √ √