Pfeiffer Vacuum HENA 201, Руководство по эксплуатации

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5.6.4 Checking the direction of rotation
NOTICE
Equipment damage from incorrect direction of rotation
The direction of rotation must be checked on vacuum pumps with three phase motors. If the vacuum
pump has an incorrect direction of rotation, damage may be caused to the pumping system after a
short time.
► Determine the intended direction of rotation based on the arrow sticker.
► Fill in the operating fluid only after that.
Procedure
1. Switch on the vacuum pump briefly (2 to 3 seconds).
– The motor and motor fan must rotate counter-clockwise (see the arrow on the fan cover).
2. If the direction of rotation is incorrect, exchange the 2 phases on the connection cable.
5.6.5 Setting the motor protection switch
Motor protection switches are current-dependent protective devices for the drive motors. Protection
switches with slow tripping characteristics are suitable.
An increase of 1.5 times the rated current over a 2 minute period is permissible for the drive motors (in
accordance with EN 60034-1), without tripping the motor protection switch.
Procedure
1. Take the settings for the motor protection switch from the following table.
2. Take into consideration that certain operating conditions (for example, cold vacuum pump start)
can cause short-term increases in current consumption.
3. Set the desired value on the contactor.
Voltage [V] Frequency [Hz] Motor rating [kW] I
N
[A] I
max
[A]
190 – 200 50 5.5 24.2 204
220 – 230 50 5.5 20.9 176
380 – 400 50 5.5 12.1 102
208 60 6.6 25.6 213
220 60 6.6 24.2 201
230 60 6.6 24.2 201
440 60 6.6 12.1 101
460 60 6.6 12.1 101
Tbl. 6: Motor protection switch setting values for Hena 201 (from index "A")
Voltage [V] Frequency [Hz] Motor rating [kW] I
N
[A] I
max
[A]
190 – 200 50 7.5 32.6 297
220 – 230 50 7.5 28.2 257
380 – 400 50 7.5 16.3 149
208 60 9.2 33.0 314
220 60 9.2 32.2 306
230 60 9.2 32.0 304
440 60 9.2 16.1 153
460 60 9.2 16.0 152
400
690 50 8.3 16.7 122
50 8.3 9.6 71
Tbl. 7: Motor protection switch setting values for Hena 251 | Hena 301 (from index "A")
Installation
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