Acceptance and Results

Typically 1–3 months; special conditions may be agreed separately.

Take photos of the heat exchanger or return water pipe before installation for records, then capture monthly images from the same location after commissioning.

Log cooling medium temperature, terminal difference, pressure, flow rate, and heat exchange efficiency; compare changes before and after commissioning.

Pre-installation Agreement: Existing hard scale at the original location will soften, thin, or reduce; no new scale will form in areas that were previously free of scale.

DeWihan does not alter water quality; hardness and conductivity do not decrease during operation, so water quality metrics cannot serve as proof of effectiveness.

Place standard coupons in the circulating water, then weigh and inspect them after a period of operation to evaluate scaling and corrosion rates.

Yes. Both parties may agree to have a third-party agency test the scale samples, coupons, or energy efficiency data.

First, verify the installation location, operational status, and process changes; then adjust the plan or add measures as stipulated in the contract.

Clogging residue typically softens within 10 days after operation, with more noticeable results in 1–3 months.

About 10 days after commissioning, scale begins to soften and peel off; it is typically removed within about 3 months.

Remove or increase discharge via filter; periodically clean settled material from the pool.

Slight cloudiness may occur temporarily as the scale layer detaches. If cloudiness persists, check the drainage and filtration systems.