Tbl. 6:
Motor protection switch settings for Uno 35 | Duo 35
Voltage [V]
Frequency [Hz]
Motor rating [kW]
I
N
[A]
I
max
[A]
230
400
265
460
50
1.5
6.1
41
50
1.5
3.5
24
60
1.8
6.1
41
60
1.8
3.5
24
220
380
60
1.8
6.7
51
60
1.8
3.85
29
230
400
60
1.8
6.44
55
60
1.8
3.72
36
200
200
50
1.5
6.35
43
60
1.8
6.95
47
200
400
200
400
50
1.8
7.6
56
50
1.8
3.8
32
60
2.2
8.8
82
60
2.2
4.4
46
Tbl. 7:
Motor protection switch settings for Uno 65 | Duo 65
5.4.5 Motor control
Frequency converter (applies to 3-phase motor)
Rotary vane pumps with variable rotation speed can be operated within a mains frequency range of 35
to 60 Hz. Start-up can be achieved via a ramp (run-up time: max. 30 sec), shutdown can take place
immediately.
Soft start
Starting the pump with an upstream soft start relay limits power input during run-up, thus preventing
mains-side load peaks. At the same time, the starting torque of the motor is limited, thus reducing the
mechanical load on the motor and pump.
Recommended setting:
● Startup voltage: >70%
● Ramp time: max. 5 s
5.5 Refilling operating fluid
WARNING
Danger of poisoning from toxic vapors
Igniting and heating synthetic operating fluid generates toxic vapors. Danger of poisoning if inhaled.
► Observe the application instructions and precautions.
► Do not allow tobacco products to come into contact with the operating fluid.
NOTICE
Risk of damage from the use of non-approved operating fluid!
Product-specific performance data are not achieved. All liability and warranty claims against Pfeiffer
Vacuum are also excluded.
► Use approved operating fluid only.
► Use other application-specific operating fluid only following consultation with Pfeiffer Vacuum.
Installation
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