KHIA headerKnow-How in Action

VOL XXX, NO 20

Belzona® Repairs Cui On A Trane Chiller

 
 

Industry:

Heating, Ventilation & Air Conditioning (HVAC)

 
 

Application:

Valves, Pipes and Fittings (VPF)

 
 

Customer Location:

Governmental Office Building, Indiana, USA

 
 

Application Date:

April 2015

 
 

Application Situation:

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.

 
 

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.

 
 

Products:

Belzona 1212

Belzona 1321 (Ceramic S-Metal)

 

Substrate:

Carbon steel cleaned to SSPC-SP 3

 
 

Application Method:

This application was performed using a modified version of Belzona Know-How System Leaflet VPF-1 & VPF-2.

 
 

Belzona Facts:

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.

 
 

Photographs Description

  1. The application area after the insulation has been removed.
  2. The corrosion was concentrated along a linear trough formed by the rubber insulation.
  3. The shell fared back out with Belzona 1212.
  4. The finished repair ready for insulation.
 
Case study pic one

 

 
 Case study pic two

 

 
 Case study pic three

 

 
 Case study pic four

 

 
 
For more information about Belzona visit: www.belzona.com