Operating instructions

Section 1
General Information
2-2 Installation & Operation MN400
Doweling & Bolting After proper alignment is verified, dowel pins should be inserted through the motor feet into the
foundation. This will maintain the correct motor position should motor removal be required.
(Baldor motors are designed for doweling.)
1. Drill dowel holes in diagonally opposite motor feet in the locations provided.
2. Drill corresponding holes in the foundation.
3. Ream all holes.
4. Install proper fitting dowels.
5. Mounting bolts must be carefully tightened to prevent changes in alignment. Use a flat washer and
lock washer under each nut or bolt head to hold the motor feet secure. Flanged nuts or bolts may be
used as an alternative to washers.
WARNING: Guards must be installed for rotating parts such as couplings, pulleys, external fans, and unused
shaft extensions, should be permanently guarded to prevent accidental contact by personnel.
Accidental contact with body parts or clothing can cause serious or fatal injury.
Guarding Guards must be installed for rotating parts such as couplings, pulleys, external fans, and unused shaft
extensions. This is particularly important where the parts have surface irregularities such as keys, key
ways or set screws. Some satisfactory methods of guarding are:
1. Covering the machine and associated rotating parts with structural or decorative parts of the driven
equipment.
2. Providing covers for the rotating parts. Covers should be sufficiently rigid to maintain adequate
guarding during normal service.
Power Connection
Motor and control wiring, overload protection, disconnects, accessories and grounding should
conform to the National Electrical Code and local codes and practices. Flying leads must be insulated with
two full wraps of electrical grade insulating tape or heat shrink tubing.
Conduit Box For ease of making connections, an oversize conduit box is provided.
The box can be rotated 360° in 90° increments.
Auxiliary conduit boxes are provided on some motors for accessories such as space heaters, RTD’s etc.
AC Power Connect the motor leads as shown on the connection diagram located on the name plate or inside the
cover on the conduit box. Be sure the following guidelines are met:
1. AC power is within ±10% of rated voltage with rated frequency. (See motor name plate for ratings).
OR
2. AC power is within ±5% of rated frequency with rated voltage.
OR
3. A combined variation in voltage and frequency of ±10% (sum of absolute values) of rated values,
provided the frequency variation does not exceed ±5% of rated frequency.
Performance within these voltage and frequency variations are shown in Figure 2-2.
Figure 2-1 Accessory Connections
One heater is installed in each end of motor.
Leads for each heater are labeled H1 & H2.
(Like numbers should be tied together).
Three thermistors are installed in windings and tied in series.
Leads are labeled T1 & T2.
Winding RTDs are installed in windings (2) per phase.
Each set of leads is labeled W1, W2, W3, W4, W5, & W6.
* One bearing RTD is installed in Drive endplate (PUEP), leads
are labeled RTDDE.
* One bearing RTD is installed in Opposite Drive endplate (FREP), leads
are labeled RTDODE.
* Note RTD may have 2−Red/1−White leads; or 2−White/1−Red Lead.