Yamaha YK250XGC, Installation Manual

Page: 79 / 96

4
Periodic inspecition
4-1
1. List of inspection items
Only qUalIfIED EngInEERS WhO havE RECEIvED ThE RObOT TRaInIng COURSE COnDUCTED by yOUR
DISTRIbUTOR aRE allOWED TO InSPECT ThE ITEMS nEEDIng ThE COvER REMOval WORk WhIlE REfERRIng TO ThE
SEPaRaTE MaInTEnanCE ManUal fOR yk-xg SERIES.
: Conduct. : Conduct if trouble is found as a result of inspection. : Contact your distributor.
Location Contents Daily 6-month Cleaning Adjustment Replacement
■
Inspection with the controller turned off
Machine harness
Robot cable
• Check for scratch, dent, or excessive bend.
• Check for damage.
Bellows • Check for breakage.
Cables prepared by user • Check for scratch, dent, or excessive bend.
Regulator
Joint
Air tube
Solenoid valve
Air cylinder
• Check that the air pressure level is correct.
• Check for air leak.
• Check that the drain is discharged.
• Check the air filter for contamination or damage.
Exterior of robot • Check for damage.
Major bolts and screws of robot
main body (those exposed to
the outside)
• Check for looseness. (*1)
Controller
• Check the terminal on the outside of the
controller for looseness.
• Check the connection connector for looseness. (*2)
Application of grease to Z-axis
spline and Z-axis ball screw (*3)
• Remove the old grease with a cloth rag and
apply the grease.
YK-XG(L)C: LG2(NSK)
YK-XG(L)P: Alvania grease S2 (Showa Shell)
Z-axis ball screw and ball spline • Check for play.
■
Inspection with the controller turned on
Safeguard enclosure
• Check that the safeguard enclosure is located
at its specified position.
• Check that the emergency stop turns on when
the safeguard enclosure is open.
• Check that the warning label is affixed to the
entrance.
Emergency stop switch
• Check that the emergency stop turns on when
pressed.
Robot operation • Check for unusual operation, vibration, or noise.
Functional check of Z-axis
brake (*4)
• Drop amount from the Z-axis rest state is 3mm
or less.
Air cooling fan on the rear of
the controller
• Check that the fan rotates.
• Check for object blocking the fan.
• Check for noise during rotation. (*5)
• Check the fan cover for contamination.
*1: If any bolt or screw is loose, retighten it. (For details about tightening torque, see the table below.)
*2: For details, see "4. Robot cable connection" in Chapter 2.
*3: For detail about how to apply the grease, see the separate Maintenance Manual.
*4: When the emergency stop switch is pressed outside the safeguard enclosure or when the controller power is turned
off, visually inspect the Z-axis brake.
*5: If any object is found through the visual inspection, remove it. If noise is heard even when no object is found,
contact your distributor.