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. 5:
Requirements on the cooling water composition
The HiLobe roots pumps are water cooled as standard.
There are two possible versions for the design of the cooling water circuit:
Connection to HiLobe
Type of cooling water circuit
Quick fitting coupling for hose lines 6 × 8 (included in
scope of delivery)
Connecting line switched in series
Quick fitting coupling for hose lines 6 × 8 (included in
scope of delivery)
Connecting line switched parallel (option-
al)
Tbl. 6:
Version of the cooling water circuit
Pressure test
Perform a pressure test following installation and all subsequent work on the cooling water
connections:
● Test pressure: 1×10
4
hPa
Prerequisites
● The cooling system provided by the customer is closed and depressurized.
● The provided hose connections correspond to the HiLobe connections.
Consumable
● Cooling water hoses 6/8
● Hose clamps 6×
Required tool
● Screwdriver
Installation
29/68
