2222
-22-
10.3. GREASE LUBRICATION POINTS
Regrease all lubrication points after every 800 hours of operation. Recommended greases are
given in lubricants table. (page 23)
For longer lubrication intervals: consult HANSEN.
10.4. MAINTENANCE FREE OIL-LOCK
TM
SEAL
The high speed shaft is equipped as standard with an OIL-LOCK
TM
oil seal. The high and low
speed shaft of the Hansen P4 single stage gear units are equipped with an OIL-LOCK
TM
seal.
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 skilled personnel.
10.5. EXTENDED PERIODS OF STANDSTILL
When gear units are at standstill for an extended period, the protective oil film containing anti
corrosion additives gradually disappears and the unprotected internal parts become subject to
corrosion. Adverse ambient conditions such as humid, marine, tropical and chemically
aggressive environments will accelerate the process.
A periodic visual inspection through the inspection cover is required.
Corrosion of the internals can be avoided by letting run the gear unit for a few minutes every two
weeks (depending on the ambient conditions) thus allowing the formation of a new oil film.
Install a special breather (marked with the label shown below) to prevent moisture from entering
the gear unit.
If it is not possible to run the unit regularly and the risk for corrosion is imminent, during
extended periods of standstill the unit must be protected as follows:
- an oil soluble concentrate including corrosion inhibitors which are active both in the liquid and
in the vapour phase has to be added. A 2% volume concentration is considered to be normal.
Consult your oil supplier about lifetime, compatibility with the actual oil and about volume
concentration.
- seal all gear unit openings (dipstick, breather etc.) hermetically .
10.6 SERVICE AFTER SALES
For technical assistance or additional information, the HANSEN sales centres are at your
disposal. When you contact them, please specify the complete type code and the manufacturing
number mentioned on the gear unit's nameplate.
10.7. REPAIRS
Any repair should only be carried out by skilled personnel.
Only original HANSEN spares should be used.
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