Manual
14
7.2 Start-up
Please proceed as follows:
1. First of all, check the hydraulic uid level of the unit.
Depending on the unit model, the uid level is indicated
by a uid sight glass (maximum = centre of sight glass;
rell required if uid level no longer visible in the sight
glass) or a dipstick (usually attached to a ller screw). If
necessary, you should top up the uid to the maximum
level.
2. Now connect the external control unit, if this is not already permanently connected to the
hydraulic unit.
3. For hydraulic units with an electric motor, you should now connect the plug to the power
supply.
4. Then vent the hydraulic unit. Make sure that the control unit is switched to depressurised
circulation. If you cannot be absolutely sure that this is the case, take appropriate measures
to enforce depressurised circulation, e.g. by connecting the supply and pressure lines
together (observe the separate operating instructions for the control unit concerned).
The actual venting is carried out in the units in a different manner, depending on the drive
motor:
a) Gasoline / petrol engine:
- Remove plug connector from the spark plug.
- Slowly turn the starter rope several times.
For a motor with electric starter, activate the starter several times.
- Then replace the plug connector.
b) Diesel engine:
- Slowly turn the starter rope several times in such a way that the engine
does not start.
c) Electric motor (power and accumulator operation):
- Switch on the motor and switch it off again after approximately 10 seconds.
Repeat this procedure several times. (Before switching back on,
the motor must be at a standstill.)
This procedure means that the pump can slowly extract and be well vented. The hydraulic
uid reservoir is equipped with automatic venting, which means no further venting
measures are required.
5. Check the level of the uid in the reservoir once more. If necessary, top up the uid.
6. Return the control unit to operational condition, i.e. reconnect the control unit correctly.
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