Operating manual 17.410+411
Pos.: 20
Dateiname
Firma
Datum
Rev
BK-DH 700 x 1000 eng.doc
BRUKS-KLÖCKNER
27.02.09
00
Seite 45 von
61
Warning:
The hydraulic pump should run only as long as necessary as extended running will
heat up the hydraulic fluid. Oil temperature over 60 deg. C is damaging to the oil; the
temperature can be checked on the combined level indicator/thermometer.
8.4.1.2 Gas pressure p1
The gas (nitrogen) pressure in the accumulator must be checked after start-up and
after repairs at least once in the first week. If no pressure loss has occurred it must
be checked again after 3 months and if that check shows no pressure loss the
checks can be done at yearly intervals.
Gas pressure is checked as follows:
- Move lever of ball valve slowly into the position „empty accumulator“.
-
Slowly
let the oil escape from the accumulator, while observing the oil pressure on
the pressure gauge of the accumulator.
- When the gas pressure p1 is reached, the needle of the pressure gauge drops
suddenly down to zero.
The pressure noted just before the drop is the gas
pressure p1.
This must correspond with the value noted on the hydraulic diagram.
Following the check of p1, the oil pressure p3 must be set again as described pre-
viously (see 8.3.1.1)
Is the accumulator gas pressure too low, it will be necessary to refill the accumulator
with nitrogen. This can be done with a special fitting, which is not part of the supply. If
the user has such a fitting, the filling must be done according to the enclosed manual
for the filling of accumulators.
We recommend that this work be done at a properly equipped service centre by
qualified personnel (for instance at a Bosch service centre).
