> For the complete documentation index, see [llms.txt](https://hyundai-robotics.gitbook.io/cobot-maintenance/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://hyundai-robotics.gitbook.io/cobot-maintenance/mt-english/4-maintenance/4-1-check-sheet.md).

# 4.1 Checking of the collaborative robot

This section describes the types, intervals, and methods of checking the collaborative robot.

The types of checks include routine checks and time-based checks according to intervals and check categories. In addition to the checks, overhaul checks should be carried out at the intervals of 35,000 operating hours.

| **Type of checks** |    **Interval**   |          **Division**         |
| :----------------: | :---------------: | :---------------------------: |
|   Routine checks   | From time to time | Devices, motors, and reducers |
|  Time-based checks |    Three months   |        Wires, and bolts       |
|                    |      One year     |             Brakes            |

{% hint style="info" %}
The check intervals vary depending on operations carried out by the robot; if the robot carries out severe handling operations, it is recommended to carry out checks at 1/2 of the specified intervals
{% endhint %}