Oerlikon 10926, Operating Instructions Manual

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20 GAET02307_002_10 - 06/2008 - © Œrlikon Leybold Vacuum
3.2 Electrical Connections
Ensure that incoming power to the pump is off before wiring the motor
or altering the wiring. Electrical connections must be done by a qualified
electrician in accordance with the applicable safety regulations.
Wire the motor for the correct supply voltage via connections in the junction
box. See the wiring diagram on the motor or in the junction box.
For proper connection, a suitable motor protection switch must be used. Set
the switch in accordance with the rating on the motor nameplate.
After connecting the motor and after every time you alter the wiring, check
the direction of rotation. Observe the direction arrow on the motor hood.
When checking, the intake port should be open. If the direction of rotation is
wrong, oil may be ejected out the intake port. The vacuum system may be
pressurised.
Don’t use the motor fan for checking the rotation direction. The motor fan
rotates too fast to clearly check during operation; when it slows during
shutdown, it reserves its direction.
Briefly switch ON the pump, check if you can feel suction at the inlet port,
and immediately turn off the pump. When the pump is rotating correctly, you
should feel suction at the inlet port.
Turn off the power supply, and interchange two phases of the connection, if
you need to correct the direction of rotation.
We recommend checking the direction of rotation with a phase-sequence
indicator.
Warning
fig. 5
Installation
Caution
L1 L2 L3 L1 L2 L3
W2 U2 V2
U1 V1 W1
U1 W1 V1
W2 U2 V2
L1 L2 L3
U1 V1 W1
T4 T5 T6
T7 T8 T9
T1 T2 T3
L1 L2 L3 L1 L2 L3
230V;50Hz
CAT NR 955 --
(JAPAN)
CAT NR 950 --
(USA)
T4 T5 T6
T7 T8 T9
T1 T2 T3
400V;50Hz
230V ; 60Hz 460V ; 60Hz
200V;50/60Hz 200-230V;60Hz 460V;60Hz
400V;50Hz
LOW VOLTAGE HIGH VOLTAGE
CAT NR 109 --
(EUROPE)
W2 U2 V2