Pfeiffer Vacuum HENA 202, Руководство по эксплуатации

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Filling up operating fluid
1. Unscrew the filler screw.
2. Fill the operating fluid according to the sight glass.
– The correct fill level is between the MIN/MAX markings or within the ring mark on the sight
glass.
3. Screw in the filler screw.
– Be careful with the o-ring.
4. Shut off the vacuum connection or the intake port valve, if fitted.
5. Start the vacuum pump.
6. Operate the vacuum pump for approx. 5 minutes.
7. Switch off the vacuum pump.
8. Wait approx. 1 minute until the operating fluid has accumulated in the operating fluid separator.
9. Check the fill level on the sight glass.
– The correct fill level is between the MIN/MAX markings or within the ring mark on the sight
glass.
10. If necessary, fill more operating fluid in case the fill level is incorrect.
11. Open the intake port valve, if fitted.
5.5 Connecting the oil/water heat exchanger
NOTICE
Vacuum pump damage caused by different cooling characteristics
For applications with short switching cycles or increased ambient temperature, there is a risk of dam-
aging the rotor after switching off temporarily.
► Always switch the oil / water cooling off together with the vacuum pump.
► For checking the cooling water flow, use a solenoid valve that only opens when the vacuum
pump is switched on.
Parameter Cooling water
Appearance ● filtered
● mechanically clear
● visually clear
● no turbidity
● no sediment
● free from grease and oil
pH value 7 to 9
Carbonate hardness, max. 10 °dH
12.53 °e
17.8 °fH
178 ppm CaCO
3
Chloride content, max. 100 mg/l
Sulfate content, max. 240 mg/l
Carbonic acid content, max. not detectable
Ammonia content, max. not detectable
Electrical conductivity, max. 500 µS/cm
Particle size, max. 150 µm
Cooling water temperature 5 – 35 °C
Cooling water flow 150 l/h
Feed line overpressure, max. 2000 – 6000 hPa
Tbl. 5: Requirements on the cooling water composition
Required material
● Cooling water hose, ID 19 mm
● Hose clamps
Installation
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