5.1
Generating pressure
After the commissioning with ventilation, pressure can be created with the hand pump. With
increasing back-pressure in the system, the pumping process becomes more and more diffi-
cult.
WARNING! There is a risk of injury if the maximum pressure is exceeded!
Note the maximum permitted pressures of the individual components in the measure-
ment device. If the limit values are exceeded, it may lead to material damage and inju-
ries.
Do not continue to pump under any circumstances if the maximum permitted pressure
has been reached or an exceeded measuring range is displayed.
CAUTION! Material damage to test item!
Adhere to the maximum pressure of the test item!
Only create an admission pressure with the hand grips that is lesser than the necessary test-
ing pressure. Following this carefully increase the pressure using the fine adjustment valve.
Notes on operation
Please observe the following notes concerning the operation of the hand pump:
•
Ensure that no air is suctioned during the pumping
process.
To ensure that this does not occur, hold the hand
pump at a slight angle so that the suction nozzles
are always surrounded by hydraulic liquid.
•
Ensure that there is sufficient hydraulic liquid in
the reservoir.
If necessary, refill the hydraulic liquid. This must
also be ensured during depressurisation
(
§ 5.3).
•
For small hydraulic volumes and well-ventilated
systems, a higher pressure is already built up with
a few movements of the pump.
Ensure that the maximum permitted pressure is
not exceeded.
•
From approximately 400...500 bar, a lot of strength
is required for pumping from the initial position of
the handles.
Increase the pressure using the fine adjustment
valve and note the following tip.
TIP! At high pressures, open the handle only lightly.
The handles can be compressed more easily the further the handles are closed. In this
way, you can create high pressures more easily and meter the pressure better.
The higher the pressure is, the less you should open the handles. In the event of high
pressures, avoid the initial position of the handles.
