36 / 109
BA 5846 en 05/2015
5.8.2 Cooling coil
The gear unit can be fitted with a cooling coil in the oil sump. Cooling water is supplied to the cooling coil
by way of a 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, a certain amount of heat is transferred from the gearunit
oil to the water and thereby removed from the system.
1, 2
3
33
X
X
X
21
K..H K..M
Fig. 16: Cooling coil on gear units of types K..H and K..M
1 Cooling-water connection
2 Reducing screw
3 Output shaft
Note
Complete immersion of the cooling coil must be ensured, because otherwise water condensation may
occur.
NOTICE
Material damage
Damage to the cooling coil possible.
The pressure of the cooling water must not exceed 8 bar. The ends of the cooling coil must not be
twisted nor must the reducing screws be removed.
If there is a danger of freezing, the cooling water must be drained off. Remaining water must be blown
out using compressed air.
The water can flow through the gear unit in either direction.
To avoid excessive water pressure, the coolingwater inlet must be fitted with a suitable coolingwater
quantitycontrol device (e.g. a pressure reducer or suitable stop valve).
WARNING
Risk of eye injury through compressed air
Remains of water and/or dirt particles may be harmful to the eyes.
Wear suitable protective glasses.
Note
For connection dimensions, refer to the dimensioned drawing of the gear unit. The required
coolingwater quantity and the maximum permissible inlet temperature are given on the data sheet
and/or in the list of equipment.
For a detailed illustration of the gear unit and the position of the addon parts, refer to the drawings in the
gearunit documentation.