Initial Start-Up; Coupled Start-Up - Baldor Reliance CDX7150 Installation & Operating Manual

Table 2−5 Minimum Blower CFM for DPBV Motors (Drip Proof Blower Ventilated)
Blower Size
LM2
LM3
LM3
LM3
LM4
LM6
LM6
LM6
LM8
LM9
Each motor nameplate is stamped with the above data for DPBV (less Blower),
DPSV and TEPV enclosures.
Caution: Motors designed for forced ventilation must have cooling air when fields are excited at rated
voltage. Installations having the air supply interrupted when the motor is not operating must have
field disconnected or field voltage reduced to 67% rated by means of field economizing resistor
and relay or motor insulation life will be significantly reduced.

Initial Start-Up

If driven equipment can be damaged by rotating in the wrong direction, uncouple the motor from the
load before checking for rotation.
Caution: Series wound motors must never be allowed to run with no load (broken belt etc.)
An unloaded motor may reach destructive high speeds.
If the direction of rotation needs to be corrected, disconnect the input power supply and interchange the
appropriate leads. Refer to the motor connection diagrams in Section 4 of this manual.
1. The first start-up and running of the motor should be with the motor uncoupled from the load.
2. Check the direction of rotation by momentarily applying power to the motor.
3. With the motor running, make sure it's running smoothly without too much noise or vibration. If either
are present, shut down the motor immediately and find the cause of the problem.

Coupled Start-Up

1. After the first successful no load start-up, stop the motor and assemble the coupling.
2. Align the coupling and be sure it is not binding in any way.
3. The first coupled start-up should be without load. Check to see that the driven equipment is not
transmitting any vibration back to the motor through the coupling or the base. Vibrations (if any)
should be within acceptable levels.
4. Run about 1 hour with driven equipment unloaded.
5. After completing these steps, the motor can now be loaded.
6. Do not exceed the value of armature nameplate amperes under steady continuous loads.
MN605
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Motor Frame Size
180
180
210
250
280
320
360
400
504-506
508-5012
Blower CFM Blower Static Pressure
55
150
175
215
350
780
780
820
1120
2000
(In H O)
2
0.50
1.45
1.45
0.78
0.88
2.80
2.80
2.50
1.58
5.00
Installation & Operation 2-5