NOCO Recommendations

CLEANING, FLUSHING AND CONVERTING HEAT TRANSFER OIL
 
 

• Completely drain heat transfer system of current product paying special attention to elbows and the expansion tank.

• Use a flushing oil, close in viscosity to the new heat transfer oil.

• Circulate flushing oil for minimum of 3 hours at a moderate temperature.

• If the heat transfer system is suspected of carbon deposits, it is suggested you flush with a high quality detergent-type product such as NOCO Heat Transfer Flush Oil.

• When flushing a system, the flush oil should be heated, not to exceed 250ºF and circulated for several days to allow for complete dispersion of the deposits.

• It may be necessary to provide a clean-out trap to physically remove the sludge that is deposited in the expansion tank and heating unit. If there are any appreciable amounts of deposits, line strainers should be installed at several points in order to prevent overloading the system filters.

• After the flushing procedure is finished, completely drain the entire system and recharge with a high quality heat transfer oil.

Please call your NOCO representative for product recommendations and information on our oil analysis program for heat transfer systems.

          rev. 06/01/2008