or D. NEMA Type 8 enclosures are suitable for
indoor or outdoor use in Class 1, Groups A, B, C, or
D. NEMA Type 9 enclosures are suitable for indoor
use in Class II, Groups E, F, or G.
**************************************************************************
Heavy-duty type designed to operate door at 0.3 meters one foot per second
with air pressure of [_____] kPa psi. Operator shall open, close, start,
and stop the door smoothly. Control equipment shall be [electrical
conforming to NEMA ICS 1 and NEMA ICS 2; enclosures shall be NEMA ICS 6,
Type 12,] [pneumatic] [pushbutton wall switches] [ceiling pull switches]
[roll-over floor treadle] [as indicated] [except that for enclosures for
use in the hazardous space indicated as [_____] shall conform to Article
500 of NFPA 70]. [Pushbuttons shall be the full-guarded type to prevent
accidental operation.]]
[Electric Operators
**************************************************************************
NOTE: Modify the paragraph to suit the type of
controls required. Insert the electrical
characteristics that will be available for the door
operation. Motors provided for operation on
480-volt circuits should have a voltage rating of
460 volts. Motors provided for operation on
208-volt circuits should have a voltage rating of
200 volts.
**************************************************************************
**************************************************************************
NOTE: If operator controls occur in hazardous
locations, utilize the proper portion. Refer to
NFPA 70 for requirements. NEMA Type 7 enclosures
are suitable for indoor use in Class 1, Groups A, B,
C, or D. NEMA Type 8 enclosures are suitable for
indoor or outdoor use in Class 1, Groups A, B, C, or
D. NEMA Type 9 enclosures are suitable for indoor
use in Class II, Groups E, F, or G.
**************************************************************************
Heavy-duty type designed to operate door at not less than 0.2 two-thirds or
more than 0.3 meters one foot per second. Control equipment shall be
electrical conforming to NEMA ICS 1 and NEMA ICS 2; enclosures shall be
NEMA ICS 6, Type 12, [pushbutton wall switches] [ceiling pull switches]
[roll-over floor treadle] [as indicated] [except that for enclosures for
use in the hazardous space indicated as [_____] shall conform to Article
500 of NFPA 70]. [Pushbuttons shall be the full-guarded type to prevent
accidental operation.] Electric power operators shall be of the type
recommended by the door manufacturer and shall be complete with motor,
controls, limit switches, magnetized reversing contactor, and other
necessary accessories. The operator shall be so designed that the motor
may be removed without disturbing the limit-switch timing and without
affecting the emergency operators. The operator shall be provided with
slipping clutch coupling to prevent stalling the motor. Where control
voltages differ from motor voltage, a control voltage transformer shall be
provided in and as part of the starter. Motors shall conform to NEMA MG 1;
be high-starting torque, reversible type; be of sufficient kilowatt
horsepower and torque output to move the door in either direction from any
position; and produce a door travel speed of not less than 0.2 two-thirds
SECTION 08162
Page 9
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