|Power Unit: Shall consist of a
submersible motor directly coupled to a constant displacement rotary screw pump, oil
reservoir, 2-speed control valve and ball valve shut-off. The control valve shall be
field adjustable, pressure compensating, and include a safety check valve, manual lowering
valve and continuous duty solenoids. The power unit shall be located adjacent to the
hoistway at the lowest landing.
Control: Shall be momentary
pressure, single automatic call/dispatch type, microprocessor based. The car shall
be called via a single call button, or key switch at each floor, or dispatched from the
car station. The car station shall contain labeled pushbuttons for each floor
served, and emergency stop button, an alarm button, and a car light switch.
Guide Rails: Shall be two (2) members with smooth splices,
located on one side of the hoistway to accurately guide the car and piston, secured to the
hoistway wall by suitable brackets and hardware.
Cables: Shall be two (2) 3/8" diameter, 8 x 19 traction
steel, each with ultimate strength of 8200 lbs.
|Plunger: The plunger shall be
accurately ground and polished seamless steel. The bottom of the plunger shall be
fitted with a heavy steel disc welded in place and provided with a suitable extended edge
to provide a positive stop.
Cylinder: The cylinder shall be
machined from steel pipe with a machined flange at the upper end and a heavy steel
bulkhead welded in the lower end. Top of cylinder shall be fitted with an air
bleeder and return line.
Door locks: Combination unit system contact and lock shall be
furnished for each hoistway entrance. Locking device shall prevent elevator
operation unless doors are closed and prevent opening of doors when car is not at landing.
Hoistway (Work by Others): A suitable hoistway conforming to
local building code. A 220 volt, single phase, 60 Hz. Power terminated in a
fused disconnect switch, located adjacent to the elevator controller. A separate 115
volt circuit for car lighting to be supplied. Hoistway entrance doors with suitable
latch set. Telephone in car connected to outside exchange.