Instruction manual

Oct 04 Issue H
GV Dry Vacuum Pumps
PAGE
13
13
INSTALLATION
3.6.3 Connect the electrical supply to the
pump: 230/460 V, 60 Hz supplies
Note: You must make the wiring connections to the
pump-motor in accordance with the US
National Electrical Code and with approved
local and site practices.
Connect the electrical supply from the contactor to
the pump-motor as described below.
Refer to Figure 5. Note that the 230/460 V 60 Hz
pumps may be supplied with the motor wires (3)
fitted to a terminal block (4), or with the terminal
wires (3) unterminated.
WARNING
Ensure that the electrical installation
of the pump conforms with your
local and national safety
requirements. It must be connected
to a suitably fused and protected
electrical supply and a suitable earth
(ground) point.
CAUTION
Ensure that the motor is correctly configured for
your electrical supply voltage and frequency. If you
do not, you can damage the motor.
If your pump is supplied with the motor wires
unterminated, use a suitable method to link the
motor wires and to connect the phase wires of your
electrical supply cable; we recommend that you fit a
terminal block, as shown in Figure 5. The following
procedure assumes that you have fitted a terminal
block to the motor wires.
1. Remove the cover from the pump-motor
terminal-box (Figure 1, item 17).
2. Remove the plug from one of the electrical
supply cable entry holes on the terminal-box.
3. Fit a suitable cable-gland and nut to the entry
hole, then pass the supply cable through the
cable-gland and tighten the cable-gland. The
cable-gland you use must be rated to provide
seal protection of IP66 (in IEC 529) or better to
the terminal-box.
4. Refer to Figure 5 (page 14). Ensure that the
links (6) are correctly configured for your
electrical supply voltage; note that the links
required are shown in the table on Figure 5:
• If you have a 230 V electrical supply, configure
the links as shown in detail A.
• If you have a 460 V electrical supply, configure
the links as shown in detail B.
(Continued on page 15)
Figure 4 - Electrical connections: 380/400/415 V, 50 Hz electrical supplies
1. Links
2. Terminal-box
3. Earth (ground) terminal
4. Electrical supply cable