Repair service for Bircher ESR3 / ESD3 safety relays – send-in overhaul with warranty – HOMAG 4-008-32-0456

What does “overhauled like new” mean? An overhauled Bircher safety relay is more than a simply tested used unit – it is a completely reconditioned device that internally matches new condition. All wear parts and defective components are systematically renewed; only the housing remains as the single used part.

The result: a relay that matches a new unit in performance, reliability and long-term stability – at a considerably lower cost and with a 14-month warranty.

The overhaul process, step by step:

1. Receipt & visual inspection – the unit is opened and fully inspected; damaged housing parts, corrosion, burn marks or mechanical defects are documented.
2. Cleaning of all components – board, contacts and housing interior; dust, oil residue and deposits from operation are completely removed.
3. Diagnosis & fault analysis – every component is measured electrically and assessed; defective parts such as capacitors, relay coils and contact elements are identified and marked.
4. Replacement of wear parts – all wear-prone components are renewed preventively, whether or not they have failed, to prevent follow-up failures shortly after installation.
5. Renewal of defective components – all parts found defective are replaced with equivalent or higher-grade components; only approved quality replacement parts are used.
6. Full electrical test – after reassembly, all inputs and outputs, response times, switching behavior and signaling contacts are tested under operating conditions.
7. Final inspection & release – the unit is checked against its type label data and released as “overhauled like new” with a 14-month warranty.
8. Shipping in padded packaging – on request with test report and documentation of the renewed components.

This service corresponds to HOMAG part number 4-008-32-0456 (new HOMAG notation without hyphens: 4008320456), replacement parts list designation STEUERGERAET 2 KANAL ESR-3-KO67 230VAC STECKBAR. Used in the HOMAG Optimat BOF 41/30/K (BOF 41 machining center). Many positions from the BOF 41 replacement parts list that are not listed in the shop are often in stock as well – just ask.

Complete overhaul of your sent-in Bircher safety relay as described above, including the 14-month warranty. Your unit is returned in padded packaging; test report and documentation of renewed components on request.

Send your relay to us in Germany; the overhaul takes 1–2 weeks. The overhauled unit is returned via FedEx or UPS. Transit to the US typically takes 2–5 business days with full tracking. Import duties and fees follow the US regulations in force on the import date and are settled by the importer. More background on availability and pricing of legacy CNC electronics: read our guide for US customers.

Shipping, duties and warranty at a glance: Shipping to the USA.