12.2.2. Oil change and regreasing
The first oil change
After 100 hours and not later than 800 hours of service:
- First regrease the lubrication points, if present.
The lubrication points have to be regreased while the gear unit is warm.
- Change the oil. Use new oil or reuse the removed oil after filtering. Don't use the filter of the lubrication
system (if available).
Filter the removed oil volume at least 10 times. Use a 10 μm filter or smaller with a beta ratio of 200 or
higher. The filter must be compatible with the used oil.
- After changing the oil, replace the filter cartridge of the lubrication system of the gear unit, if present.
Filter (if present)
Replace the filter cartridge after every 800 hours of operation unless the filter has a contamination indicator.
Before replacing the filter cartridge, run the gear unit a while after regreasing if this applies.
Grease lubrication (if lubrication points are present)
- Bearings: regrease all lubrication points after every 800 hours of operation.
- Labyrinth seals: regrease all lubrication points after every 3000 hours of operation. The lubrication interval
should eventually be reduced depending on the application and the working conditions. In any case, the
outer grease chamber may never be dry.
For longer lubrication intervals: consult Hansen Industrial Transmissions nv.
See paragraph 7.6 (page 30) for the greases to be used
Grease quantity for bearings: see page 36
Grease quantity for labyrinth seal: see page 38
Subsequent oil changes
After 4000 to 8000 hours or max. 18 months of operation depending on working conditions:
- First regrease the lubrication points (if present) while the gear unit is warm.
- Change the oil. Use clean oil from clean barrels. Avoid any penetration of abrasive particles and water.
- Replace the filter cartridge, if present.
12.3. OIL SAMPLE
When the oil sump temperature is frequently 80° to 95°C (175° to 200°F), or in the event of a dusty or humid
atmosphere, it is recommended to have an oil analysis performed (by a laboratory acknowledged) by the oil
brand name owner after every 4000 hours of service in order to determine the expected lifetime of the oil.
Oil sump temperature must never be higher than 95°C (200°F), since oil then will degenerate very fast.
A representative oil sample should be taken directly out of the oil sump. Drain a certain amount of oil
(recommended oil volume 2 litres) before taking the oil sample. Make sure to use only appropriate and clean
sample bottles. For the characteristics, the chemical properties and the grade of cleanliness of the sample bottle:
refer to the laboratory acknowledged by the oil brand name owner.
Be careful while draining the hot oil. Use an appropriate hot oil recipient, heat resistent clothing and
gloves to avoid burns.
Before start up, check the oil level with the dipstick and add oil when required.
12.4. CLEAN THE HEATER
If the gear unit is provided with a heater, it is recommended to clean regularly (at every oil change) the heater
and to eliminate the deposition, in order to improve the life span of the heater.
12.5. OIL-LOCK
TM
OIL-GUARD
TM
(as an option)
Oil-Lock
TM
The high speed shaft is equipped as standard with an OIL-LOCK
TM
system.
For the Hansen P4 single stage gear units also the low speed shaft is equipped with an OIL-LOCK
TM
system.
This oil seal is wear resistant and maintenance free due to its centrifugal operating principle. The dual purpose
labyrinth seal also prevents the entrance of dirt and moisture.
Disassembly of the OIL-LOCK
TM
seal should only be carried out by qualified personnel.
ENGLISH
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