Seepex BN 5-12 Series, Operation & Maintenance Manual

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Manual of Electric Motors 85
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If alignment is made by a laser instrument, please consider the instructions and recommendations provided by
the laser instrument manufacturer.
The alignment should be checked at ambient temperature with machine at operating temperature.
Pulley and belt couplings must be so aligned that the driver pulley center lies in the same plane of the driven
pulley center and the motor shaft and the shaft of the driven machine are perfectly parallel.
After completing the alignment procedures, ensure that mounting devices do not change the motor and
machine alignment and leveling resulting into machine damage during operation.
It is recommended to record the maximum alignment deviation in the Installation Report.
The coupling alignment must be checked periodically.
6.7. CONNECTION OF OIL LUBRICATED OR OIL MIST LUBRICATED MOTORS
When oil lubricated or oil mist lubricated motors are installed, connect the existing lubricant tubes (oil inlet and
oil outlet tubes and motor drain tube), as shown in Figure 6.12. The lubrication system must ensure continuous
oil flow through the bearings as specified by the manufacturer of the installed lubrication system.
Inlet
Drain
Outlet
Figure 6.12 - Oil supply and drain system of oil lubricated or oil mist lubricated motors
6.8. CONNECTION OF THE COOLING WATER SySTEM
When water cooled motors are installed, connect the water inlet and outlet tubes to ensure proper motor
cooling. According to item 7.2, ensure correct cooling water flow rate and water temperature in the motor
cooling system.
6.9. ELECTRICAL CONNECTION
Consider the rated motor current, service factor, starting current, environmental and installation conditions,
maximum voltage drop, etc. to select appropriate power supply cables and switching and protection devices.
All motors must be installed with overload protection systems. Three-phase motors should be fitted with phase
fault protection systems.
Before connecting the motor, check if the power supply voltage and the frequency comply with the
motor nameplate data. All wiring must be made according to the connection diagram on the motor
nameplate. Please consider the connection diagrams in the Table 6.2 as reference value.
To prevent accidents, check if motor has been solidly grounded in accordance with the applicable standards.
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