Condenser
Since this water circuit is usually an open-type system, the tubes may be subject to
contamination and scale. Clean the condenser tubes with a rotary tube cleaning system at least
once per year, and more of te n if the water is contami nat ed. Inspect the enter ing and leaving
condenser water s ensors for si gns of slime, co rrosion, or scal e. Replace the sensor if corrod ed
or remove any scale if found.
Higher than normal condenser press ures, together wi th the inability to reach full refri geration
load, usually indicat e di rty tubes or air in the mach ine. If the refrigerat io n log indicates a rise
above normal condense r pressures, check the co nde nser refrigerant tem pe rature against the
leaving condenser wa te r temperature. If this read ing is more than what the desi gn difference is
supposed to be, then the co nde nser tubes may be dirty, or water flow may be incorre ct.
Because HFC134-a is a hi gh- p ressure refrigera nt, air usually does not ent er the machine,
rather, the refriger ant leaks out.
During the tube cleaning process, use brushes especially designed to avoid scraping and
scratching the tube wall. Contact your Carrier representative to obtain these brushes.

Do not

use wire brushes.