Table 12 Device Component Replacement Recommendations - Beckhoff CP22 Series Manual

Maintenance
Nevertheless, some components of the devices may be subject to a limited service life if they are operated
under certain conditions, such as at increased ambient temperatures during operation or during storage or
during long periods of storage out of operation.
Beckhoff therefore recommends replacing some of the components of the devices after the time after which
predictions of the remaining service life of such components can no longer be reliably calculated.
These are the following components:
• Storage media
• Battery and battery pack
• Fan
The following table provides recommendations for the regular, precautionary replacement of the device
components:
Table 12: Device component replacement recommendations
Component
UPS battery pack
2.5-inch hard disk
3.5-inch hard disk
Fan
Compact Flash, CFast or SSD
Motherboard battery
Beckhoff is excluded from liability in the event of possible damage occurring during maintenance work. In
order to avoid damage caused by electrostatic discharge when replacing device components, protective
measures are recommended. Below are some suggestions.
ESD protection
Electrostatic discharge
The replacement of device components without ESD protection can lead to functional impairment and
destruction of the device.
• If possible, apply ESD protection measures during maintenance work.
When working on electronic devices, there is a risk of damage due to ESD (electrostatic discharge), which
can impair the function or destroy the device.
Protect the device and create an ESD-protected environment in which existing electrostatic charges are
safely discharged to ground and charging is prevented.
An ESD-protected environment can best be created by setting up ESD protection zones. The following
measures serve this purpose:
• ESD-compliant floors with sufficient conductivity to the reference potential PE;
• ESD-compatible work surfaces such as tables and shelves;
• Wrist grounding strap, especially for sedentary activities;
• grounded and electrostatically dissipating equipment and operating materials (e.g. tools) within the
ESD protection zone.
If it is not possible to create an ESD protection zone, you can still protect the device against ESD damage.
For example, the following measures can be used:
• Use conductive mats connected to the ground potential as underlays.
• Dissipate possible charges from your own body by touching grounded metal (e.g. control cabinet door).
• Wear a wrist grounding strap.
40
Recommendation for replacement intervals (years)
5 years
5 years or after 20,000 operating hours at more than 40
°C or after 30,000 operating hours at less than 40 °C
5 years, irrespective of the operating hours
7 years
10 years
5 years
NOTICE
Version: 2.9 CP22xx