Installation
29
130000761_002_A0 - 08/2008 - © Oerlikon Leybold Vacuum
Fig. 2.11 Pump with water cooling
G1/8” threads
Cooling water specifications
Feed temperature
15 - 35
°
C
Feed pressure
3 to 7 bar absolute
Cooling water requirement
See Fig. 2.9
Appearance
colourless, clear, free of oils and greases
Sediments
< 250 mg/l
Particle size
< 150 µm
pH value
7 to 8.5
Overall hardness (total alkaline earths)
max. 20
°
German hardness scale
(= 3.57 mmol/l)
Connecting the cooling water
Screw on the cooling water lines. Cooling water connection: G 1/8“.
The cooling water may be connected radially or axially to the connecting
piece of the cooling coil. Blank off the unused G 1/8” threads using the
screw-in stoppers and gaskets supplied.
Adjust the cooling water temperature so that the formation of condensate is
avoided.
When switching the cooling water supply on and off by means of an electric-
ally actuated valve, connect the valve so that it will be switched on and off
together with the pump.
