H4-CH-28-D for cooling tower applications EAC certificate MA Helical speed reduction gearbox H4

Flender/Flender Gear Units/Helical speed reduction gearbox H4

haft sealing rings. Oil foaming in the gear unit. Preservative agent not completely drained. Gear unit too cold in operation. Water in oil. Oil too old (defoaming agent used up). Unsuitable oils mixed up. Oil supply system has been operated for too long at lowtemperatures.Change oil. Shut down gear unit and have oil degassed. Restart without coolingwater. Check state of oil by the test-tube method for water contamination.Have oil analysed by chemicallaboratory.Change oil if necessary. Test the oil; change the oil, if necessary. Test the oil; change the oil, if necessary. Stop oil supply system. Allow the oil to degas. 8 / 9BA 5 en 0/2Faults Remedy Causes Water in oil. Oil foams in oil sump. Gear unit exposed to cold air from machine-room ventilator: Watercondensing. Climatic conditions. Defective oil supply system or cooling coil.Check state of oil by the test-tube method for water contamination. Have oil analysed by chemicallaboratory. Protect gear unit with suitable heat insulation. Close air outlet or alter itsdirection by structural measures. Contact Customer Service. If necessary, use wet air filter. Check the oil supply system or cooling coil; replace any defectiveparts, if necessary. Consult operating instructions for oil supply system. Increased operating temperature.Oil level in gear unit housingtoo high. Oil too old. Oil badly contaminated. Defective oil supply system or cooling coil. Gear unit with cooling coil: Deposits in the cooling coil. Gear unit with fan: Suction opening and/or gear unithousing heavily soiled.Check the oil level. Drain oil if necessary. Check when the last oil change was done. If necessary, change oil,see section 1. Change oil, see section 1.Check oil supply system or cooling coil. If necessary replace defectivecomponents. Consult operatinginstructions for oil supply system. If necessary, clean or replace cooling coil, see section 1. Clean fan and/or gear unit. Temperature at backstop too high. Locking function fails.Damage to bac