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Operating Instructions
10/2010
1096.0799 | VU / VH Series
19
6.2.2 Switch-off
WARNING
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.
1.
Operating liquid: close fitting.
2.
Switch off the motor.
3.
Ventilation port (if available): open the fitting.
4.
Check all connecting screws and tighten them if required
(only after initial commissioning).
CAUTION
Risk of aggregate damage resulting from vacuum condition!
►
Aerate the aggregate during switch-off.
►
Do not leave the aggregate under vacuum.
If the aggregate is not aerated, the mechanical seals will be
subject to damage.
6.3 Setting the operating liquid flow
rate
6.3.1 Continuous-flow
cooling
►
Switch on the aggregate.
►
Set the pressure in the operating liquid pipe to max. 0.2 bar
overpressure (
Diagram Fig. 13)
L
PIC
01
F
A
D
S
Fig. 13 Continuous-flow cooling
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. 14, 15, 16)
L
PIC
01
F
A
U
D
S
Fig. 14 Open circulation cooling
L
F
A
U
D
S
PIC
01
TIC
02
Fig. 15 Open circulation cooling with temperature control
L
A
D
S
LIC
03
U
F
Fig. 16 Open circulation cooling with controlled liquid feed
►
Observe the permissible operating liquid temperature
(
Operating liquid, page 39)