1. Complaint department
If WIKA recognises a deviation of the bought-in products, WIKA complains about the deliveries (in isolated cases also parts of the delivery) and sends them back to the supplier. If it may be necessary to rework or sort out the products at WIKA for reasons of meeting deadlines, the supplier must agree upon the activities required prior to reworking or sorting out the products and the costs incurred are passed on. Each complaint is reported to the supplier by means of a test report and has effect on the supplier evaluation.
2. Comment / 8D report
If WIKA requests a written comment from the supplier in case of a complaint, the request is clearly recorded in the test report with indication of the deadline. The supplier must send the comment as 8D report within the deadline to the e-mail address 8Demail@example.com. If it may not be possible to send the comment within the required deadline, the supplier must inform WIKA by sending a short message, including the new deadline, to the same e-mail address. If the comment is not sent to WIKA in time, a reminder will be sent.
3. Technical changes
Technical modifications of the product or the manufacturing process at the supplier must be reported, planned and carried out early in agreement with WIKA. After each modification, WIKA reserves the right to re-sample the product or to revaluate the process on the basis of a process sign-off.
Modification on the initiative of the supplier
The supplier must request the modification of an approved component from the responsible WIKA Lead Buyer. WIKA decides internally if the modification can be carried out. The modification may be carried out only after approval. An advance plan guaranteeing the supply until the modification is authorised must be presented in agreement with the WIKA Supplier Quality Engineer.
The following modifications require a new first article inspection:
- Modification of the product design
- Modification of the material or substance
- Modification of the product manufacturing process
- Application of new or modified machines, tools or equipment
- Assignment of new subsuppliers
- Relocation of the production
If a new/second sample inspection of the product is required due to technical modifications, WIKA will order samples and provide the first article inspection file (EMPB report) to the supplier. The responsible WIKA Supplier Quality Engineer must agree upon the extent of the first article inspection.
Modification on the initiative of WIKA
After a modification, WIKA will provide the technical documentation, such as drawings and/or specifications, with a new index and provide it to the suppliers. On request, WIKA gets an offer (costs and deadlines) and a producibility evaluation of the requested modification. The drawings will be modified only after accepting the offer and confirming the producibility.
The extent of the first article inspection will be defined by the responsible WIKA Commodity Team.
4. Deviation Request
If a supplier recognises that the product differs from the technical documentation, the supplier can inform WIKA by means of a Deviation Request. The supplier must send the filled-in request, including the WIKA subject number and order number, to the responsible Supplier Quality Engineer. Note: The supplier must fill in the complete form sheet! Particularly important are the failure cause and the remedy.
WIKA checks internally the usability of the product and informs the supplier about the decision by sending the filled-in deviation request to the supplier. Products delivered due to an authorised deviation permission are not considered negatively in the supplier evaluation.
5. Process audit
WIKA reserves the right to audit the manufacturing process and all processes relevant for supplying WIKA at any time and after agreement with the supplier. Reasons for an audit may be: qualification of a new supplier, conclusion of a quality assurance agreement, considerable deterioration of the quality performance of a supplier, approval of new/modified processes and tools. WIKA performs process audits based on VDA6.3. The audit is planned in agreement with the responsible body of the supplier. After carrying out the audit, the supplier is informed about the result within one workweek but normally the same day. If improvement measures are required due to the audit result, the supplier must elaborate an action plan and send it within the deadline to the WIKA Lead Auditor. If a re-audit may be required due to the occurred deviations, the re-audit must be agreed upon with the responsible body of the supplier.