Edwards A34310940, Инструкция по эксплуатации

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We recommend that you connect the electrical supply to the motor through a starter or
circuit breaker which has thermal over
‑
current protection which can be adjusted to suit
the full load current ratings shown in Table: Electrical data: three-phase motors on page
17 . The fuse ratings in Table: Electrical data: three-phase motors on page 17 are
provided for guidance only. The supplier of the thermal over-current protection device
may specify different values to ensure correct operation of the fuse and the over-current
protection device. Ensure that the fuse used is suitable for the starting currents given in
Table: Electrical data: three-phase motors on page 17 .
Refer to Figure: Three-phase motors: 200-220 V 50 Hz and 200-230 V 60 Hz on page 28
or Figure: Three-phase motors: 380-415 V 50 Hz and 460 V 60 Hz on page 29 as
appropriate for the correct electrical supply connection diagram for the motor.
The diameter of the outer sheath of the electrical cable must be in the range 10
‑
14 mm.
The cable must conform in size and colour coding with the local and national electrical
installation regulations. The temperature rating of the cable must be 70 °C or greater.
1. Remove the cover from the motor terminal-box.
2. Remove the cable-gland from the inside of the terminal-box and fit the cable-gland
to the cable lead-through hole in the side of the terminal-box. Using a tool this
should be tightened to a torque of 3.75 Nm.
3. Refer to the electrical supply connection diagram for the pump. Make sure that the
metal links are connected as shown; if they are not, move the links to the positions
shown.
4. Pass the electrical supply cable through the cable-gland and connect to the
appropriate terminals. Tighten the earth (ground) terminal connection to a torque
of 2.13 to 2.87 Nm.
5. Tighten the dome shaped nut on the cable gland until the outer sheath of the
cable is firmly gripped. Using a tool this should be tightened to a torque of 2.5 Nm,
do not overtighten.
6. Ensure that the gasket seal for the terminal box cover is correctly positioned, then
refit the cover to the terminal-box and secure with the screws.
4.7.2 Check the direction of rotation
CAUTION:
Ensure that the pump
‑
motor rotates in the correct direction. If it does not, the pump
and your vacuum system can become pressurised.
1. With the pump inlet still unconnected, watch the motor cooling
‑
fan through the
motor fan
‑
cover.
2. Switch
‑
on the electrical supply to the motor for a few seconds and switch off.
3. Check that the motor cooling
‑
fan rotates in the direction shown by the arrow on
the motor mounting
‑
plate. If the direction of rotation is incorrect:
▪ Isolate the pump from the electrical supply
▪ Remove the terminal
‑
box cover and swap wires L1 and L3. Refer to the wiring
diagram supplied in the motor terminal box
▪ Refit the cover to the terminal
‑
box
▪ Connect the pump to the electrical supply
Page 27
A34310880_T - Installation