Wednesday, 10 December 2014

Chemical washing of evaporators coils 2.

When the washing and cleaning were done, engineer Mr. Teo Leong Kock admired his well done job.
We covered back all panels and test run the air-con. There are no more water condensate dripping into the compartments and underfoor. The work took us almost a day to complete successfully.

The Dragon Lim engineers carried the blower and motor assemblies back to the compartment carefully.

Mr. Teo Leong Kock tightening the bolts and nuts of the blower assembly.

When all evaporators coils were washed, MD Dragon Lim and his engineers carried the blower and motor assembly back to the compartment one by one. He aligned the assembly position correctly.

Mr. Lim Chin Sun helping Mr. Teo Leong Kock to go into the blower compartment to wash the next set of coils and fins.

MD Dragon Lim removing motors cables from contactor for the second blower.

MD Dragon Lim was pressurising the solution in the hand pump. The pressure of the solution need to pressurise when the solution is not spraying from the nozzle.

Mr. Ng Yee Peow made sure that he took a nice picture.

Our customer, Mr. Ng Yee Peow taking picture of how to wash the evaporator coils.

This photo shows engineer Mr. Teo Leong Kock spraying degreasing solution at the coils and fins. He had to cover his nose to prevent inhalation of sprayed vapour. It had to be spayed row by row to ensure all areas were covered with degreasing solution.

This photo shows a oil stained evaporator coils.

This photo shows the empty compartment with a built-in duct for down throw.

The first blower and motor assembly removed from unit and placed on the floor.


  1. Very professionally done.. great job!

  2. Is it worth to buy used aircon and refurbish instead of buying a new unit?

  3. Very detailed sharing indeed. Also very informative on the steps and procedures.Thanks for the sharing.