# VSH400PLC090909
- 26 -
Oils available from ERKO: package of 1dm
3
- order code OLEJ_HYDR_1,
package of 5 dm
3
– order code OLEJ_HYDR_5.
A tank cleanliness check, tank washing, oil change and hydraulic system
inspections are recommended. Every 12 months by service personnel.
Maintaining oil purity and periodical oil changes have a great effect on the
durability of the hydraulic unit and considerably prolong their performance
and reliability. Required oil purity: class 9 (recommended class 8) according
to the NAS 1638 norm.
Remove air from the pump after an oil refill. To do so, start up the pump with
short cycles (2 sec.) until the equipment servomotor sticks out to the
maximum position. First, with no system load. Then, gradually increase the
load until the maximum working pressure is obtained (oil overflows over the
overflow valve) and the pump is working evenly and quietly. In the case of a
power unit loud and uneven work and no power, the air removal operation
should be repeated. Skipping this procedure will prevent obtaining proper
working pressure level and in extreme situations will result in pump seizure.
When operating the station, check the system tightness every day and
regularly remove any leaks of oil and check its level in the tank.
In the case of a power unit failure, switch off electrical power supply and
contact your specialized service. Repairs within the guarantee period can
only be carried out by the manufacturer or authorized representatives.
Protect the equipment against the influence of weather factors, corrosion,
contamination
and
mechanical
damage.
If the power unit becomes wet, it should be dried; when it becomes dirty, it
should be cleaned without using water. When not used for longer periods,
store
the
equipment
in
a
clean
and
possibly
dry
place.
Proper maintenance and operation considerably extends the life of the power
unit.
