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Old 25-03-2016, 01:00 AM   #6968
carlover76
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Join Date: Oct 2002
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The spray oni clean the surface only 15%... only chemical overhaul can do the cleaning job 99%...
Yes, you are right. This spray only used for general servicing and chemical overhaul cannot be done too frequent, probably once a year which they will dismantle the whole coil down to use chemical to wash the coil.
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