19
0
10
20
30
40
50
60
70
80
90
100
110
0
0,3
0,4 0,5 0,6
0,7 0,8 0,9
1,0 1,1 1,2
1,3 1,4 1,5 1,6
0
1000
2000
3000
4000
5000
6000
0,2
≤
25 ˚C Cooling water t
emperature
Gas throughput
[mbar l/s]
Fore vacuum pressure [mbar]
Gas throughput
[sccm]
Cooling water flow rate 100 l/h
0
5
10
15
20
25
30
35
40
0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1
1,1 1,2 1,3 1,4 1,5 1,6
0
500
1000
1500
2000
≤
25 ˚C Coo
ling water t
empe
rature
0
Gas throughput [mbar l/s]
Fore vacuum pressure [mbar]
Gas throughput [sccm]
Cooling water flow rate 100 l/h
Gas type characteristics lines “Gas Mode 0”
Gas type characteristics lines “Gas Mode 1”
Operation with cooling water
temperature
≠≠
25°C
This chapter does only apply to the TPH version. As the auto-
matic power reduction is designed for a cooling water tempe-
rature of 25 °C, at higher temperatures you must adjust the
power yourself. If the cooling water temperature is to high for
the current power, the rotor can overheat and being damaged
that way. A cooling water temperature < 25 °C has no influen-
ce – the pump acts as with a cooling water temperature of 25
°C.
To reduce power, either the gas throughput or the fore vacu-
um pressure has to be changed.
➡
Specify one of the values. Draw a straight line to the gas
type characteristics line of the cooling water temperature
used.
➡
Read off the other value from the adequate axis.
Example how to adjust the power:
1. The gas throughput is 12 mbar l/s, the Gas Mode is “0”, the
cooling water temperature is 35 °C.
2. The fore vacuum pressure has to be
≤
0,3 mbar.
0
5
10
15
20
25
30
35
40
0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1
1,1 1,2 1,3 1,4 1,5 1,6
0
500
1000
1500
2000
Gas throughput [mbar l/s]
Gas throughput [sccm]
Fore vacuum pressure [mbar]
≤
25 ˚C Coo
ling water t
empe
rature
0
Gas Mode "0"
1.
2.
Example how to adjust the power
The following gas type characteristics lines enable you to
adjust the power properly. At a cooling water temperature
between 25 °C and 35 °C you have to draw your own gas type
characteristics line.
