BELZONA REPAIRS CUI ON A TRANE CHILLER
Industry: Heating, Ventilation & Air Conditioning (HVAC)
Application: VPF-Valves, Pipes and Fittings (VPF)
Substrate: Carbon steel cleaned to SSPC-SP 3
Customer Location: Governmental Office Building, Indiana, USA
Application Date: April 2015
Belzona 1321 (Ceramic S-Metal)
Problem: 0.2 inch (5 mm) deep corrosion under insulation threatened to perforate the shell of this chiller. Condensation was traveling through an ineffective seam and pooling in a trough between two sections of foam insulation. This section of the shell experienced almost continual immersion and the attendant corrosion rates.
- The application area after the insulation has been removed.
- The corrosion was concentrated along a linear trough formed by the rubber insulation.
- The shell fared back out with Belzona 1212.
- The finished repair ready for insulation.
A 50-year-old Trane chiller located on the fifth floor of an office building in downtown Indianapolis. Not only would a replacement unit be extremely costly but a crane in a dense metropolitan area would further complicate the task.
This application was performed using a modified version of Belzona Know-How System Leaflet VPF-1 & VPF-2.
The Belzona repair was significantly faster and less expensive than replacement, did not require any down time, and most importantly actually prevents a reoccurrence of the same problem. This chiller is now better than new.