Seepex BN 5-12 Series, Руководство по эксплуатации и техническому обслуживанию

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Manual of Electric Motors 95
E
N
G
LI
S
H
L
D
Figure 7.1 - Minimum clearance to the wall
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:
g
If the nameplate data (voltage, current, connection diagram, degree of protection, cooling system, service
factor, etc.) meet the application requirements;
g
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
in Table 6.10;
g
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,
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;
g
Check if the motor wiring connections, including grounding and auxiliary equipment connection, have been
carried out properly and are in accordance with the recommendations in item 6.9;
g
Check the operating conditions of the installed auxiliary devices (brake, encoder, thermal protection device,
forced cooling system, etc.);
g
Check bearing operating conditions. If signs of oxidation are detected, replace the bearings. If no sign of
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;
g
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
before starting the motor.
g
Inspect the capacitor operating condition, if any. If motors are installed for more than two years, but were
never commissioned, it is recommended to change the start capacitors since they lose their operating
characteristics;
g
Ensure that the air inlet and outlet opening are not blocked. The minimum clearance to the nearest wall (L)
should be at least ¼ of the fan cover diameter (D), see Figure 7.1. The intake air temperature must be at
ambient temperature.
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