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When should the RAYEX S be returned for repair?

This article explains when the RAYEX® S measuring unit must be taken out of service and returned for repair to ensure safe and reliable operation.

Situations requiring return for repair

The RAYEX® S must be returned for repair whenever safe or correct operation can no longer be guaranteed. This includes, but is not limited to, the following situations.

Failed safety checks

The RAYEX® S must be returned for repair if any mandatory safety check does not proceed correctly, including:

  • Warning lamp test

  • Internal safety switch test

  • External emergency shut-off test

  • Scattered radiation measurement

If one of these tests fails, the device must not be used anymore and must be taken out of service immediately by disconnecting the mains power.

Electrical or radiation safety concerns

Return the RAYEX® S for repair if:

  • There is suspected hazardous voltage exposure inside the unit

  • The housing or protective components are damaged

  • There is a risk of excessive stray or scattered radiation

  • The unit does not switch to a safe state when required

Any damage that could lead to unsafe operation requires immediate removal from service.

Malfunctions that cannot be resolved

The RAYEX® S must be returned for repair if:

  • The malfunction cannot be resolved using the troubleshooting guidelines

  • The issue persists after replacing user-replaceable spare parts

  • Measurement values remain incorrect despite proper reference measurements and calibration

In these cases, further operation is not permitted.

Repairs not permitted by the user

The following situations always require return for repair:

  • Repairs involving components not listed as customer-replaceable

  • Internal electronic or high-voltage components

  • X-ray sources (which contain no serviceable parts)

Such repairs must only be performed by Zumbach service engineers or authorized personnel.

After incidents or abnormal events

The RAYEX® S must be returned for repair after:

  • A breakdown or incident affecting operation or safety

  • Physical damage due to impact or transport

  • Any situation where safe operation is uncertain

Before reuse, the device must be inspected and approved by authorized service personnel.

How to return the RAYEX S for repair

When returning the device for repair, always:

  • Include a clear and detailed description of the failure

  • Specify the operational mode in which the issue occurred

  • Provide contact details of a responsible person

  • Use the original packaging, if available

  • Return the complete unit with all relevant cables and accessories when required

Service and sales contact details can be found in the instruction manual.