2.6.3.1
Pneumatic Operators
**************************************************************************
NOTE: Designer will coordinate with the drawings to
ensure compressed air is available at door locations.
**************************************************************************
Pneumatic operators shall be heavy-duty industrial type designed to operate
the door at not less than 0.2 nor more than 0.3 m/second 8 inches nor more
than one foot/second with air pressure of [_____] kPa psi. Pressure
regulator shall be provided if operator is not compatible with previously
specified air pressure. Dryer, filter, and filter alarm shall be provided.
Pneumatic piping shall be provided up to connection with building
compressed air, but not more than 6 m 20 feet from door jambs. Operators
shall have provision for immediate emergency manual operation of the door
in case of failure. The operator shall open, close, start, and stop the
door smoothly. Control shall be [electric, conforming to NEMA ICS 2 and
NEMA ICS 6; enclosures shall be Type 12 (industrial use), Type 7 or 9 in
hazardous locations, or as otherwise indicated] [pneumatic] with [push
button wall switches] [ceiling pull switches] [rollover floor treadle] as
indicated.
2.6.3.2
Electric Operators
Electric operators shall be heavy-duty industrial type designed to operate
the door at not less than 0.2 nor more than 0.3 m/second 8 inches nor more
than 1 foot/second. Electrical controls shall be [push button wall
switches] [ceiling pull switches] [rollover floor treadle] as indicated.
Electric power operators shall be complete with electric motor, brackets,
controls, limit switches, magnetic reversing starter, and all other
accessories necessary. The operator shall be designed so that the motor
may be removed without disturbing the limit-switch timing and without
affecting the emergency operator. The power operator shall be provided
with a slipping clutch coupling to prevent stalling of the motor.
Operators shall have provisions for immediate emergency manual operation of
the door in case of electrical failure. Where control voltages differ from
motor voltage, a control voltage transformer shall be provided in and as
part of the starter. Control voltage shall be 120 volts or less.
a.
Motors: Drive motors shall conform to NEMA MG 1, shall be
high-starting torque, reversible type, and shall be of sufficient
horsepower and torque output to move the door in either direction
from any position at the required speed without exceeding the
rated capacity. Motors shall be suitable for operation on [_____]
volts, [60] [_____] hertz, [single] [three] phase, and shall be
suitable for across-the-line starting. All motors shall be
designed to operate at full capacity over a supply voltage
variation of plus or minus 10 percent of the motor voltage rating.
b.
Controls: Each door motor shall have an enclosed reversing
across-the-line type magnetic starter having thermal overload
protection, limit switches, and remote control switches. The
control equipment shall conform to NEMA ICS 2; enclosures shall be
NEMA ICS 6, Type 12 (industrial use), Type 7 or 9 in hazardous
locations, or as otherwise indicated. Each wall control station
shall be of the three-button type, with the controls marked and
color coded: OPEN - white; CLOSE - green; and STOP - red. When
the door is in motion and the "STOP" control is pressed, the door
shall stop instantly and remain in the stop position; from the
SECTION 11035
Page 24
Previous Page
