Fouling mechanics
Coal dust combined with high humidity forms an adhesive layer on wet coils that dry cleaning cannot remove. Left in place it insulates the coil and progressively strangles airflow.
Cleaning regime
Wet chemical coil cleaning at shortened intervals, matched to a filtration stage that captures the bulk load upstream, restores and sustains design capacity.
Condensate management
High latent load produces significant condensate volume. Drain routing, trapping and inspection must be part of the service scope or water damage becomes the secondary failure.
Applied context
This document reflects our field experience on excavators in surface environments across national mining operations. Site conditions vary — we recommend verification against your own measured data.