Schwing SP 1800, Оригинальная инструкция по эксплуатации

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3.21 Difficult operating conditions
Erschwerter-Betrieb-EN.fm - 01.08.01 201
Information
Water offset with antifreeze may not come into contact with concrete!
• After the assignment, drain the entire water system (water pipes and pump, wa-
ter box, water case). Switch on the concrete pump briefly to remove the water
from the pumping cylinders.
3.21.1.4 Hydraulic system
SCHWING recommends appropriate hydraulic fluids for different climates and ap-
plications, see (
“Recommended lubricants and fuels” on page 227).
The multi-purpose hydraulic oil filled in at the Herne factory can remain in the sys-
tem, as long as the starting temperature does not drop below -10 °C.
Should work be performed at temperatures ranging between -10 °C and -15 °C,
switching over to winter oil (VG 32) is required.
Otherwise, the great oil viscosity can cause a risk of damage during a cold start.
The hydraulic pumps suck in air (oil foams) and will be damaged.
When changing the oil, also replace the filters.
Make sure that the optimum operating viscosity (16 to 36 mm²/s) is also at an oil
temperature between approx. 35 and 65 °C for hydraulic oil with viscosity class*
VG 32.
Information
The system may only be fully loaded in the area of the optimum operating viscosity.
However, the highest permissible temperature for VG 32 is below that of VG 46 or
VG 68.
See diagram in (Table 1 Comparison of viscosity classes).
a) Cold-start limit in °C
b) Oil temperature in °C
c) Viscosity in mm²/s
d) Operating temperature and viscosity
* Viscosity = Resistance to flow