Pfeiffer Vacuum Hena 26, Руководство по эксплуатации

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5.5.4 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.
5.5.5 Setting the motor protection switch
Motor protection switches are current-dependent protective devices for the drive motors. Motor protec-
tion 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 motor protection switch.
Voltage [V] Frequency [Hz] Motor rating [kW] I
N
[A] I
max
[A]
190 – 200 50 1.0 5.0 43
380 – 400 50 1.0 2.5 22
208 60 1.2 5.0 50
220 60 1.2 4.9 49
230 60 1.2 4.9 49
440 60 1.2 2.4 24
460 60 1.2 2.4 24
Tbl. 5: Motor protection switch settings for Hena 26 global motor
Voltage [V] Frequency [Hz] Motor rating [kW] I
N
[A] I
max
[A]
200 50 1.0 4.9 41
346 50 1.0 2.8 24
220 60 1.2 4.8 40
380 60 1.2 2.8 24
220-240 50 1.1 7.0 20
Tbl. 6: Motor protection switch settings for Hena 26 Asian motor
Voltage [V] Frequency [Hz] Motor rating [kW] I
N
[A] I
max
[A]
190 – 200 50 1.4 7.6 61
380 – 400 50 1.4 3.8 31
208 60 1.7 7.4 60
220 60 1.7 7.4 60
230 60 1.7 7.4 60
Installation
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