widos 4900 - 4 Operating and Indicating Elements; Elements on the Hydraulic Aggregate

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W. Dommer Söhne GmbH D-71254 Ditzingen-Heimerdingen Fax +49 7152 9939 - 40
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02.11.11 Working instructions WIDOS 4900 Page 16 of 46
4. Operating and indicating elements
4.1. Elements on the hydraulic aggregate
No. Denomination Function
7 Pressure gauge Digital display of the hydraulic pressure
8 Valve lever Opening/closing the slide. There are 4 different positions:
- to the left side: slide closes
- in the middle (usual position): the pressure is currently
achieved is kept (also by means of the hydraulic
accumulator)
- slightly to the right side (position pressureless): a
possibly existing pressure is released without moving the
slide. Due to the hydraulic accumulator it takes about 10 s
until the pressure is completely released.
- to the right side: slide opens
9 Adjusting screw for pressure
relief valve
- For the limitation of the hydraulic pressure to the
desired value
10 Hydraulic connection for
closing
- Non-dropping quick-action hose coupling
11 Hydraulic connection for
opening
- Non-dropping quick-action hose coupling
12 Screw with oil level stick - Checking the oil-level
- Filling in oil
7
8
10
11
9
12
Mains cable
230V / 50HZ
power supply
for hydraulic
aggregate
Label
„opening/
closing“
Indicating label
setting the
pressure relief
valve