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using a lintfree cloth). If the oil flowing out of
the pump cylinder is bubble-free, the cylinder
has been aired properly. After that, move the
consumer(s) back and forth several times until
most of the air has been drained here as well
and the movement is smooth. If the consumer
have air bleeds, loosen the locking elements and
do not tighten them again until bubble-free oil is
oozing out of these spots.
3.1.1 Oil Filler
„ The hydraulic oil needs to be fine filtered before
it can be filled in through the designated filler
opening. Filling Volume: approx. 8 litres.
„ Hydraulic oil in accordance with DIN 51524 T1.
1 and 2; ISO VG 10 through VG 68 according to
DIN 51519 or synthetic ester (HEES) according
to VDMA 24568 and 24569. Use only brand
name products. For a selection of approved
qualities, see Oil Recommendation D 5488.
„ Viscosity range for optimal operation approx. 10
2
... 500 mm
/s
„ Viscosity limits (start viscosity) min. approx. 4;
max. approx. 1,500 mm
„ Hydraulic oils ISO VG 22, 32, and 46 possess
the widest temperature range within the optimal
operating viscosity range.
„ Ensure cleanliness when filling in the oil! A sieve
plate with a mesh width of 0.4 mm is built into
the pump below the filling plug, which will retain
any crude contamination from the oil tank.
Nevertheless, using a filler plug with a fine mesh
sieve of similar mesh width is recommended.
Fill in hydraulic
oil
Figure 3: Filling with hydraulic oil
Schmid & Wezel
D 75433 Maulbronn
2
/s
Reattach screw cap
when filling is complete
Ring Mark
max. oil level
3.1.2 Electrical Connection
The pump power pack may only be
installed and wired by a qualified
specialist, who is familiar and
complies with the generally
applicable rules of engineering as
well as the corresponding rules
and regulations.
Table 1: Electrical Connection
Parameters
Engine
Operating
Voltage (V)
Frequency (Hz)
-1
Speed (min
)
Power Output
(kW)
Current (A)
Starting current
ratio (I
/I
)
A
N
Power factor
(cos M )
Protection relay
type
Protection class I: We
recommend using a FI circuit
breakers for protection against
Permissible voltage ranges:
50 Hz grids: ± 10% U
60 Hz grids: ± 5% U
For low voltages a decreased power output (low
p
) must be tolerated..
max.
Point of reference: p
Example: U
act.
U
= 460 V 60 Hz
N
p
Operation max.
Page
11/32
10/ 17
Identification Numbers
Rotary current, four-phase,
stator shrunken into the
pump case
400/
460/
230Y'
265Y'
50
60
1405
1700
2,2
2,6
4,8/8,3
4,9/8,5
5,4
5,0
0,85
0,8
IP54
IP54
(according to IEC 38)
N
N
U
act
| 0.85p
operation
U
N
= 400 V 60 Hz
400V
0.85p
| 0.7p
max.
°
460V
09/14
500Y
50
1405
2,2
3,8/6,6
5,4
0,85
IP54
max.
°
max
Version
10.2013
03.2005
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