Dry Walnut Shell/TURBO CLEANER TURBO CLEANER DRY is blown by compressed air into the exhaust pipes before the turbocharger. This method of cleaning should be employed every 24 -48 hours of full-load operation. The interval between cleaning operations depends on the degree of contamination and on the increase in exhaust gas temperature after the turbine. Cleaning must be repeated if the gas temperature after the turbine on full load rises to 20°C (20 K) above the mean temperature. For a turbocharger with several gas inlets, the inlets should be cleaned one after the other. On engines with several turbochargers, these should be cleaned one after the other. The gas inlet temperature before the turbine must not exceed 580-590°C (853-863 K) in order to prevent severe burning of the TURBO CLEANER DRY before the turbine. Since it is not possible to remove thick coatings with relatively small quantities of TURBO CLEANER DRY, this method must be used more frequently. Injection of the TURBO CLEANER DRY into the turbine is best performed at high turbocharger speed, to ensure efficient mechanical cleaning