5. Observe the information in the operating instructions of the backup pump or pumping station when
connecting and operating it.
6. Tighten the cylinder screws on the clamp lock evenly.
– Tightening torque:
2 Nm
.
5.4 Cooling water connection
The HiPace 450 turbopumps are water-cooled as an option.
WARNING
Risk of scalding from suddenly escaping hot cooling water
The turbopump water connections are open to both sides. When connecting the cooling water supply,
there is a risk of scalding from suddenly escaping, hot cooling water at over pressure.
► Prior to installation, ensure that pressure is discharged from the cooling water system, and that it
is cooled down.
► Wear protective equipment, e.g., safety goggles and gloves.
Recommendations for cooling the turbopump
► Use additional cooling in the event of increased fore-vacuum pressure (> 0.1 hPa).
► Use additional cooling if operating with high gas throughput.
► Always use water cooling at ambient temperatures > 35 °C.
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 CaC0
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
see "Technical data"
Cooling water flow
see "Technical data"
Cooling water pressure, max.
6000 hPa
Tbl. 7:
Requirements on the cooling water composition
Connection to the turbopump
External cooling water supply
Banjo fitting with insertion system
Hose cable
External hose diameter 8 mm
Internal hose diameter 6 mm
Tbl. 8:
Requirements on the cooling water connection
Prerequisites
● The cooling system provided by the customer is closed and depressurized.
● The provided hose connections correspond to the turbopump connections.
Installation
30/64
