GE GEH-5304A - Manual (Page 7)

GEH-5304A
7
Table 1
Typical Weights**
Motor (Less
Accessories) Armature
CD2512AT 500 120
CD2513AT 550 135
CD2812AT 650 160
CD2813AT 750 190
**Typical weights. For specific weight, see certified outline.
III. INSTALLATION
Installation should be in accordance with the National Electrical Code and consistent with all local codes. Cou-
pling, belt and chain guards should be installed as needed to protect against accidental contact with moving parts.
Machines accessible to the public should be further guarded by screening, guard rails, etc. to prevent personnel
from coming in contact with the equipment. Fully guarded covers are supplied on motors and generators. Shaft
guards are supplied on motor generator sets.
Totally enclosed and waterproof motors must have all covers securely in place with gaskets intact in order to ex-
clude dirt, oil and water. It is generally preferred to remove plugs from drain holes at the bottom of the frame to
ensure that no condensation will collect inside the motor. However, if the installation requires plugs to be installed,
they must be removed periodically to make certain that all water is eliminated.
A. Location
Motors and generators should be installed so that they will be readily accessible for routine inspection and
maintenance. They are suitable for use in ambient temperatures from 0
°
C (32
°
F) to 40
°
C (104
°
F). An ade-
quate supply of clean, dry room air is required for self-ventilated, separately ventilated and blown motors.
Where motors must operate in dirty, wet or contaminated environments, protection in the form of filters or
totally enclosed construction must be used to obtain long life with normal maintenance.
Do not obstruct ventilating openings.
When filters are supplied, service them regularly. Dirty filters shut off ventilating air.
Beware of recirculation. Install motors so that hot exhaust air will not re-enter the motor.
The use of electrical equipment in hazardous locations is restricted by the Na-
tional Electrical Code, Article 500. Original equipment manufacturers and user
customers must read, understand and apply these rules for installation and use
of all equipment in such locations and consult local code inspection and en-
forcement agencies, as necessary, to ensure compliance. Motors listed by
Underwriters Laboratories, Inc. for use in specific locations have been designed, tested and ap-
proved for use in such locations only.
Sections 501-8 and 502-8 now permit the use of totally enclosed motors with positive pressure
ventilation or totally enclosed inert-gas-filled motors (Class I locations only), when installation
and operation conform to certain requirements.
Motors for Class I locations must have leads sealed at the frame exit and an explosion-proof
conduit box. See Sections 501-4 and 501-5.
Motors for Class II locations must have leads sealed at the frame exit and a dust-ignition-proof
conduit box. See Sections 502-4 and 502-5.