Cleaning Utility Transformer Cans

Remove Heavy Oils and Build-up from the Interior and Exteriors of 200 Transformer Cans Per Day

Background

This customer is a state-owned public utility. They needed to wash, rinse and dry transformer “cans” in large quantities for re-manufacture. They were steam cleaning, which was labor intensive and caused various environmental hazards.

Problem

These transformer “cans” must be cleaned inside and out of heavy oils (almost tar-like) in preparation for a painting process. This tar-like substance is extremely difficult to remove from the inside of the can and from the interior bottom seal. Another challenge was the minimal requirement to clean 200 "cans" per day. 

Solution

Engineer a turntable that in essence is a rotating spray manifold with five (5) “drum” nozzles that go up inside the transformer “cans”. The parts are sprayed inside and outside while the turntable is rotating . A nine (9) minute wash/rinse/dry cycle produces meticulously clean parts; the drum nozzles can be quick disconnected so other types of parts can be cleaned (i.e., transformer insulators.)

System

A Stainless Steel F-6000LX-P-SS with recirculated rinse cycle and regenerative air blow down with heat. Several options were also included such as: PLC Control with touch screen, conductivity meter, end-of-cycle beacon light, and a Detergent Injection System.