Commissioning; Initial Start-Up - Lamb LABA-WDMO-0814 Betriebsanleitung

7. COMMISSIONING

7.1. INITIAL START-UP

After finishing the installation procedures and before starting the motor for the first time or after a long period
without operation, the following items must be checked:
If the nameplate data (voltage, current, connection diagram, degree of protection, cooling system, service
g
factor, etc.) meet the application requirements;
If the machine set (motor + driven machine) has been mounted and aligned correctly;
g
If the motor driving system ensures that the motor speed does not exceed the max. allowed speed indicated
g
in Table 6.10;
Measure the winding insulation resistance, making sure it complies with the specified values in item 5.4;
g
Check the motor rotation direction;
g
Inspect the motor terminal box for damage and ensure that it is clean and dry and all contacts are rust-free,
g
the seals are in perfect operating conditions and all unused threaded holes are properly closed thus ensuring
the degree of protection indicated on the motor nameplate;
Check if the motor wiring connections, including grounding and auxiliary equipment connection, have been
g
carried out properly and are in accordance with the recommendations in item 6.9;
Check the operating conditions of the installed auxiliary devices (brake, encoder, thermal protection device,
g
forced cooling system, etc.);
Check bearing operating conditions. If signs of oxidation are detected, replace the bearings. If no sign of
g
oxidation is detected, relubricate the bearings as described in item 8.2. If the motors are stored for more than
two years, the bearings must be replaced before starting the motor;
When motors are fitted with sleeve bearings, ensure:
g
Correct oil level for the sleeve bearing. The oil level should be in the center of the sight glass (see Figure 6.8);
g
That the motor is not started or operated with axial or radial loads;
g
That if the motor is stored for a period equal or longer than the oil change interval, the oil must be changed
g
before starting the motor.
Inspect the capacitor operating condition, if any. If motors are installed for more than two years, but were
g
never commissioned, it is recommended to change the start capacitors since they lose their operating
characteristics;
Ensure that the air inlet and outlet opening are not blocked. The minimum clearance to the nearest wall (L)
g
should be at least ¼ of the fan cover diameter (D), see Figure 7.1. The intake air temperature must be at
ambient temperature.
D
L
Figure 7.1- Minimum clearance to the wall
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Manual of Electric Motors 95