flender usa H2DV-23-C Helical gear reducers H2

Flender/Flender Gear Units/Helical gear reducers H2

and is protected from accidental contact by an air-guide cover. The fan sucks air through the grid of the air-guide cover and blows it along the air ducts on the side of the gear unit housing. It thereby dissipates certain amount of heat from the housing. Fig. 1: Fan on gear units of types .. and .. 1 Fan 2 Air-guide cover For detailed illustration of the gear unit and the position of the add-on parts, please refer to the drawings in the gear unit documentation. NOTICE Property damage Overheating of the drive unit is possible by inadequate air supply. For gear units fitted with fan, sufficient space must be allowed as suction opening for cooling air intakewhen mounting the safeguards for the coupling or similar. The correct distance is given in the dimensioned drawing in the gear unit documentation. It must be ensured that the air-guide cover is correctly fastened. The air-guide cover must be protectedagainst damage from outside. The fan must not come into contact with the air-guide cover. NOTICE Property damage Overheating of the gear unit by dirt layer with insulating effect on the gear unit or by soiled fan ispossible.The cooling effect is considerably reduced if the the fan or the housing surface is soiled. Information on cleaning are contained in section 1. "Maintenance and repair". 3 / 9BA 5 en 0/2.9.2 Cooling coil The gear unit can be fitted with cooling coil in the oil sump. Cooling water is supplied to the cooling coil through water connection. The operator must ensure this. Either fresh water, sea water or brackish water can be used for cooling purposes. When water is flowing through the cooling coil, certain amount of heat is transferred from the oil to the water and thereby removed from the system. 1, 2 3 3XX 2 1 .. .. Fig. 1: Cooling coil on gear units of types .. and .. 1 Cooling water connection 2 Reducer screw3 Output shaft Note Complete imm ersion of the cooling coil must be ensured, because otherwise water condensation may occur. NOTICE