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6.3.2 Open circulation cooling
▶ Switch on the aggregate.
▶ Set the pressure in the operating liquid pipe to max. 0.2
bar overpressure (→ Diagram Fig. 10, 11, 12)
Fig. 10 Open circulation cooling
Fig. 11 Open circulation cooling with temperature control
Fig. 12 Open circulation cooling with controlled liquid feed
▶ Observe the permissible operating liquid temperature
(→ Operating limits, page 28)
6.3.3 Closed circulation cooling
▶ Switch on the aggregate.
▶ Set the pressure in the operating liquid pipe to a value
which is 0.1 bar smaller than the compression pressure
(→ Diagram Fig. 13)
Fig. 13 Closed circulation cooling
▶ Observe the permissible operating liquid temperature
(→ Operating limits, page 28)
Pos.
S
L
D
A
U
F
VK
RK
TIC
PIC
LIC
Tab. 8 Legend of symbols
6.4 Decommissioning
Risk of injuries caused by vacuum or harmful media to be
pumped and operating liquid!
▶ Use protective equipment when carrying out any works
on the aggregate.
▶ Reliably collect escaping media to be pumped and
dispose of in an environmentally-friendly way.
19
255548 Rev.1
Meaning
Suction connection
Ventilation port
Pressure connection
Overfl ow
Circulation liquid
Fresh liquid
Feed-in cooling agent
Return cooling agent
Temperature
Pressure
Filling level
WA R N I N G
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