Maintenance and Repair

Description

Any maintenance work, inspection and calibration shall be conducted in compliance with all safety instructions in this manual, the UR Service Manual, and according to local requirements.

Repair work shall be done by Universal Robots. Client designated, trained individuals can do repair work, provided they follow the Service Manual.

Safety for Maintenance

The purpose of maintenance and repair is to ensure the system is kept functioning as expected.

When working on the robot arm or control box, you must observe the procedures and warnings below.

Failure to adhere to any of the safety practices, listed below, can result in injury.

  • Unplug the main power cable from the bottom of the Control Box to ensure that it is completely unpowered. Power off any other source of energy connected to the robot arm or Control Box. Take necessary precautions to prevent other persons from powering on the system during the repair period.

  • Check the earth connection before re-powering the system.

  • Observe ESD regulations when parts of the robot arm or Control Box are disassembled.

  • Prevent water and dust from entering the robot arm or Control Box.
Safety for Maintenance

Failure to leave space to accommodate the Control Box with the door fully open can lead to injury.

  • Provide at least 915 mm of space to enable the Control Box door to open fully, providing access for servicing.

Disassembling the Control Box power supply too quickly after switching off, can result in injury due to electrical hazards.

  • Avoid disassembling the power supply inside the Control Box, as high voltages (up to 600 V) can be present inside these power supplies for several hours after the Control Box has been switched off.

After troubleshooting, maintenance, and repair work, ensure that safety requirements are fulfilled. Adhere to national or regional work safety regulations. The correct functioning of all safety function settings shall also be tested and validated.

 
Lockout Tagout

UR robots can be de-energized and locked in the de-energized state. This is to control hazardous energy due to tasks associated with installation, maintenance or repair of the robot, robot application or robot cell.

To perform "Lockout" or "control of hazardous energy" of the power to the robot, you can use a power plug lock to prevent the power cord from being reattached to the Control Box, for example Brady 148081 Plug Lockout for IEC.

Exposure to hazardous energy or the release of contained hazardous energy can result in electrical shock and serious injury.

  • Use a power plug lockout to prevent the power cord from being reattached to the control box. For example see Brady 148081 Plug Lockout for IEC plug or equivalent.

 

After troubleshooting, maintenance, and repair work, ensure that safety requirements are fulfilled. Adhere to national or regional work safety regulations. The correct functioning of all safety function settings shall also be tested and validated.