What to Do When a Delivered Machine Performs Differently from the Approved Sample

When a delivered machine does not achieve the same performance as the approved sample, the difference should be recorded and submitted for technical evaluation. For the YT-JCH-3 Bonnel Spring Unit Production Line, the review should compare the approved operating conditions with the delivered machine’s configuration, settings, installation environment, output, and test results. YUANTIAN supports this process through production traceability, component inspection, complete-machine testing, remote diagnosis, and its stated global warranty policy.

Recommended Response to a Performance Difference

A structured investigation can help identify whether the variance is related to machine configuration, operating parameters, installation, production materials, working conditions, or an equipment fault. The following information should be collected before a final service decision is made:

• Approved sample details and the agreed technical specifications.
• Delivered-machine configuration, operating parameters, output records, and alarm history.
• Installation conditions, power supply, air pressure, raw materials, and operator procedures.
• Production batch information, inspection results, and available commissioning or acceptance records.
• Videos, photos, test data, and a clear description of the observed performance difference.

YUANTIAN’s technical team can then use remote diagnosis to review alarms, assess operating conditions, adjust parameters, and determine whether an on-site inspection or replacement part is required.

YT-JCH-3 Machine Specifications for Comparison

The YT-JCH-3 Bonnel Spring Unit Production Line is intended for mass-production mattress factories, automated production-line projects, and upgrades for overseas mattress manufacturers. Its stated productivity is 7–17 units per hour, while maximum coiling productivity is listed at 93 pieces per minute. These figures should be evaluated under comparable materials, settings, staffing, and production conditions.

Key Technical Reference Points

The supplied technical information lists a three-phase 380 V, 50 Hz power supply, with customization available according to customer requirements. The required air pressure is 0.6–0.8 MPa, total power is 38 kW, the spring end-coil diameter is 65–90 mm, and the applicable wire diameter is 2.0–2.4 mm. The specified installation area is 8,700 × 6,600 mm.

These specifications provide measurable checkpoints when the delivered line is compared with the approved sample. Any difference should be assessed together with the actual raw material, production speed, machine setup, utility conditions, and operator instructions.

Quality Control, Traceability, and Service

YUANTIAN describes inspections covering raw materials, electrical components, transmission systems, and other critical parts. Completed machines undergo 24-hour no-load and load testing to assess stability, precision, noise, and safety. Export equipment also receives checks for corrosion protection, moisture resistance, and shipping suitability, and international orders are packed in fumigated wooden cases.

Production traceability records contain batch information and inspection data, allowing the technical team to review how the machine was manufactured and tested. YUANTIAN also cites ISO 9001 quality management certification and uses ERP, PDM, and MES systems to support production management.

When a confirmed failure is determined to be unrelated to human operation, the stated policy may provide free repair or replacement of parts for complete machines during the one-year global warranty period. Wearing parts are excluded. Professional engineers can assist with installation, commissioning, acceptance, and operator training, while multilingual remote service is available for diagnosis, parameter adjustment, and system upgrades.

Comparison of Investigation and Support Options

Frequently Asked Questions

What information is needed to report a difference from the approved sample?

Provide the approved sample specifications, delivered-machine details, operating parameters, output records, installation conditions, raw-material information, and any available test, batch, photo, or video evidence. This gives the technical team a clear basis for comparison.

Can YUANTIAN investigate the issue remotely?

Yes. The stated global service program includes remote diagnosis, alarm analysis, parameter adjustment, and system upgrades. Remote support can be used to check the operating condition and identify the next service step before an on-site visit is arranged.

Will the warranty cover a machine that performs differently?

The policy states that complete machines receive a one-year free global warranty, excluding wearing parts. Free repair or replacement applies to failures confirmed to be non-human-caused during the warranty period. The final decision depends on the verified technical cause.

Conclusion

A performance difference between an approved sample and a delivered machine should be handled through documented comparison and technical diagnosis. For the YT-JCH-3 line, productivity, electrical supply, air pressure, power consumption, wire diameter, spring dimensions, installation space, testing records, and traceability data provide practical reference points. YUANTIAN offers manufacturing, installation, commissioning, training, spare-parts service, remote support, and a stated one-year global warranty. For technical assistance or a detailed solution, contact yuantian@yuantian.com.

About Us

Foshan Yuantian Mattress Machinery Co.,Ltd was founded in 1982 and focuses on the research, development, manufacturing, sales, and service of mattress machinery and spring mattresses. The company operates a 150,000-square-meter production facility and supplies complete digital production-line solutions for mattress manufacturers. Its portfolio covers eight major machinery series and 146 specifications, with 2–3 new products introduced annually. The company cites ISO 9001 certification and serves customers across multiple industries.