SECTION 14120

ELECTRIC DUMBWAITERS

PART 1 GENERAL

SECTION INCLUDES

[One] [____] dumbwaiter system; [floor] [counter] type.

Landing and cab doors and frames [, including installation in masonry hoistway enclosure].

Machines, controllers, hoistway, and fitments.

PRODUCTS FURNISHED BUT NOT INSTALLED UNDER THIS SECTION

Section [_____-__________]: Placement of [sheave] [hoisting] beams for installation.

Section [_____-__________]: Placement of dumbwaiter machine anchors in concrete.

Section [_____-__________]: Placement of guide rail support brackets and anchors.

RELATED SECTIONS

Section 03300 - Cast-in-Place: Concrete for machine foundation.

Section 03300 - Cast-in-Place: Concrete [enclosed hoistway,] [pit,] [overhead [hoist] [sheave] beams].

Section [_____-_____________]:	Masonry enclosed hoistway.

[Section [_____-_____________]: Building-in and grouting hoistway door frames.]

Section [_____-_____________]: Structural steel [hoistway framing,] [overhead [hoist] [sheave] beams].

Section [_____-_____________]:	Waterproofing of pit.

Section [_____-_____________]: Fireproofing of guide rail brackets where attached to fireproofed structural members.

Section 07724 - Roof Hatches: Smoke venting hatch at top of hoistway.

Section [_____-_____________]: Fire [and smoke] detectors in hoistway.

Section [______-____________]:	Pit drain.

Section [_____-_____________]: Electrical service to main

disconnect in dumbwaiter machine room.

Section [_____-_____________]: Electrical service and lighting for [machine room] [machine room convenience outlets] [including electrical power for dumbwaiter installation and testing].

Section [_____-_____________]: Empty conduit to dumbwaiter equipment devices remote from dumbwaiter machine room or hoistways.

REFERENCES

ANSI/ASME A17.1 - Safety Code for Elevators and Escalators.

ANSI/ASME A17.2 - Inspection of Elevators, Escalators and Moving Walks.

ANSI/ASTM A36 - Structural Steel.

ANSI/ASTM A167 - Stainless and Heat-Resisting Chromium-Nickel Steel Plate, Sheet, and Strip.

ANSI/ASTM A446 - Steel Sheet, Zinc Coated (Galvanized) by the Hot-Dip Process, Structural (Physical) Quality.

ANSI/ASTM B221 - Aluminum and Aluminum-Alloy Extruded Bar, Rod, Wire, Shape, and Tube.

ANSI/AWS D1.1 - Structural Welding Code.

ANSI/IEEE C1 - National Electrical Safety Code.

ANSI/NFPA 80 - Fire Doors and Windows.

ANSI/UL 10B - Fire Tests of Door Assemblies.

APA - American Plywood Association.

NEMA LD-3 - High Pressure Decorative Laminates.

SSPC - Steel Structures Painting Council.

SYSTEM DESCRIPTION

Characteristics of [each] dumbwaiter [No.1] [________] as follows:

Rated Net Capacity	[500] [____] lbs

([227] [____] Kg).

Rated Speed	[________] ft/min

([________] m/min).

Travel Distance (nominal)	[________] ft (

([______] m).

No. of Stops	[________].

No. of Openings	[________] Front.

[________] Rear.

Nominal Platform Size	[____x____] inches

([____x____] mm).

Hoistway and Cab Entrance

Frame Opening Sizes	[____x____] inches

([____x____] mm).

Door Operation	[Single leaf, vertical

sliding] [Double leaf,	center parting, vertical	sliding].

OPERATION

Provide automatic operation with full bank of operating buttons at each landing numbered to correspond to landings served.

Call or dispatch car to various landings by momentary pressure of respective buttons when landing doors are closed.

Indicate arrival of car at any landing by light at landing.

Inactivate buttons while car is in motion and for [several] [____] seconds after arrival at landing to allow time to open door.

Provide two additonal buttons marked IU (inching up) and ID (inching down) at each entrance, to level car to landing by constant pressure of button while car door and hoistway door are open, provided car is within inching zone.

Program doors to open automatically when car arrives at landing.

If doors are prevented from closing for approximately ten seconds because of an obstruction, automatically disconnect door control device, and sound alarm.

CALL AND SEND OPERATION

Initiate Call and Send Operation with an "up" and "down" button at each landing.

Dispatch car by momentary pressure on buttons, provided landing doors are closed.

****** [OR] ******

CENTRAL STATION OPERATION

Central Station Operation: Landing calls to be registered at Central Station.

On closing of door at Central Station, car to proceed to nearest call registered.

Each time car doors are cycled, proceed to next nearest call.

When last stop is reached, return car automatically to Central Station after car doors have been cycled.

Program dumbwaiter to continue travel, by pressure on "restart" button at Central Station if, at any landing, door is not opened.

Return dumbwaiter immediately to Central Station upon operation of a "recall" button.

SUBMITTALS

Submit under provisions of Section [01300] [________].

Shop Drawings: Indicate driving machine, controller, governor and other component locations; sheaves, supporting beams, guide rails, buffers and other components in hoistway; maximum loads on guide rails and hoisting beams; control functions and operational description.

Product Data: Provide data on signal and operating fixtures, operating panels, indicators; cab design and components; door and frame details [; electronic equipment to control and monitor dumbwaiter control functions].

Samples:	Submit [two] [_______] samples, [____x____] inch ([____x____] mm) in size illustrating floor material, cab interior, cab ceiling, cab door, hoistway entrance door and frame finishes.

PROJECT RECORD DOCUMENTS

Submit under provisions of Section [01700] [________].

Accurately record actual locations of concealed items, conduit, and locations of components.

OPERATION AND MAINTENANCE DATA

Submit under provisions of Section [01700] [________].

Operation Data: Include description of dumbwaiter systems method of operation and control including door operation, signals, and special or non-standard features provided.

Maintenance Data: Provide parts catalogs, legible schem-atic wiring diagrams, one copy of master schematic and lubrication chart.

QUALITY ASSURANCE

Perform Work in accordance with ANSI/ASME A17.1, ANSI/AWS D1.1, ANSI/IEEE C1, ANSI/NFPA 80 and ANSI/UL 10B.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing dumbwaiter equipment with [ten] [________] years minimum [documented] experience.

Installer: Employees and supervisor on payroll of dumbwaiter equipment manufacturer.

Design equipment under direct supervision of a Professional Structural Engineer experienced in design of this work and licensed [at the place where the Project is located] [in the State of [____________]].

REGULATORY REQUIREMENTS

Conform to [applicable] [________] code for manufacture and installation of dumbwaiter system.

FIELD MEASUREMENTS

Verify that field measurements are as [indicated on shop drawings] [instructed by the manufacturer].

COORDINATION

Coordinate work under provisions of Section [01039] [________].

Coordinate installation of hoistway wall construction.

WARRANTY

Provide [two] [____] year warranty under provisions of Section [01700] [________].

Warranty: Include coverage for dumbwaiter system, operating equipment and devices.

MAINTENANCE SERVICE

Furnish complete service and maintenance of dumbwaiter system and components during the [building contract [including the time of temporary use]] [dumbwaiter contract] [warranty period].

Examine [semi-monthly] [_____] [monthly]; clean, adjust, and lubricate all equipment.

Repair or replace parts whenever required. Use parts produced by the manufacturer of the original equipment.

[Provide emergency call back service [at all hours] [during working hours] during this maintenance period.]

Perform maintenance work using competent personnel under the supervision [and in the direct employ] of the dumbwaiter manufacturer.

Maintenance service shall not be assigned or transfered to any agent or Subcontractor without prior written consent of the [Architect/Engineer] [Owner] [________________].

PART 2 PRODUCTS

MANUFACTURERS

[____________________________] Model [_________________].

[____________________________] Model [_________________].

[____________________________] Model [_________________].

Substitutions: Under provisions of Section [01600] [01630].

MATERIALS

Rolled Steel Sections, Shapes, Rods: ANSI/ASTM A36.

Sheet Steel:	ANSI/ASTM A446, Grade [B] [____], zinc coated to [G90] [____].

Stainless Steel:	ANSI/ASTM A167, Type [304] [____], No. [4] [_________] finish.

Aluminum: ANSI/ASTM B221, extruded [6063] [_________] alloy with [T6] [________] temper, [________] finish.

Plywood: APA Structural I, Grade [C-D] [________], sanded.

Plastic Laminate: NEMA LD-3, [______________] type, [________] color/pattern, [________] surface finish.

Shop and Touch-Up Primer: [SSPC 15, Type 1, red oxide] [________].

****** [OR] ******

Touch-Up Primer for Galvanized Surfaces: Zinc rich type.

Primer for Wood Surfaces: Alkyd primer sealer.

EQUIPMENT

Motors, Controller, Controls, Buttons, Wiring and Devices, Indicators: UL approved.

Guide Rails, Ropes, Counterweights, Sheaves, Attachment Brackets and Anchors: Purpose designed, sized according to code with safety factors.

Grease Fittings: For lubricating bearings requiring periodic lubrication.

CAR FABRICATION

Frame: Rigid rolled steel sections, braced; mounted on resilient isolators.

Enclosure: Sheet steel panels attached to steel frame, sheet plywood inner liner.

CAB FABRICATION

Cab Design: [_________________________________].

****** [OR] ******

Floor, Walls and Ceiling: [3/4] [___] inch ([19] [___] mm) plywood, fire retardant treated surfaces and edges. [Provide double thickness floor sheathing.]

Flooring: [Decorative plastic laminate] [Stainless steel] [________________] on plywood.

Walls: [Decorative plastic laminate] [Stainless steel] [________________] on plywood.

Ceiling:	[Decorative plastic laminate] [Stainless steel] [________________] on plywood.

Cab Doors: [Stainless steel] [Baked enamel on steel] [________]; [16] [____] gage ([1.5] [____] mm) thick metal, flush design, rolled profiles, rigid construction.

Cab Door Frames: [Stainless steel] [Baked enamel on steel] [________]; [16] [____] gage ([1.5] [____] mm) thick metal, of rolled profiles, welded corner design, smooth invisible joints.

LANDING ENTRANCES

Landing Doors and Frames: Design No. [_________].

****** [OR] ******

Landing Doors: [Stainless steel] [Baked enamel on steel] [________]; [16] [____] gage ([1.5] [____] mm) thick metal, flush design, rolled profiles, rigid construction.

Landing Door Frames:	[Stainless steel] [Baked enamel on steel] [________]; [16] [____] gage ([1.5] [____] mm) thick metal, of rolled profiles, welded corner design, smooth invisible joints.

Door and Frame Construction:	ANSI/UL 10B rated, with [applicable] [_____________] fire rating; insulated sandwich panel construction.

FINISHES

Structural Metal Surfaces: Clean surfaces of rust, oil or grease; wipe clean with solvent; prime two coats.

Machine Room Components:	Clean and degrease; prime [one coat] [two coats].

Galvanized Surfaces:	Clean with neutralizing solvent; prime one coat.

Wood Surfaces Not Exposed to Public View: Prime [one coat] [two coats].

Baked Enamel on Steel: Clean and degrease metal surface; apply one coat of primer sprayed and baked; two coats of enamel sprayed and baked; [________] color [as selected].

LANDING CONTROLS

Landing Buttons: [Stainless steel] [Illuminating] type.

Position Indicators:	[Illuminating [white] [________] up and [green] [________] down arrows] [________________].

PART 3 EXECUTION

EXAMINATION

Verify site conditions under provisions of Section [01039] [________].

Verify that hoistway, pit and machine room are of correct dimension.

Verify location and layout of machine foundation and position of machine foundation bolts.

Confirm electrical power is of correct characteristics.

PREPARATION

Arrange for temporary electrical power to be available for installation work and testing of dumbwaiter components.

INSTALLATION

Install system and components in accordance with ANSI/ASME A17.1.

Mount machine on vibration and acoustic isolators, on bed plate and concrete pad.

Arrange equipment in machine room so equipment can be removed for repairs or replaced without dismantling or removing other equipment components.

[Install hoistway door sills, frames and headers in hoistway walls. Grout sills in place.]

Connect equipment to building utilities.

Provide conduit, boxes, wiring and accessories within machine room, hoistway and signal outlets.

Field Welds: Chip and clean away oxidation and residue, wire brush weld, prime two coats.

FIELD QUALITY CONTROL

Field [inspection and] testing will be performed under provisions of Section [01400] [_____].

Obtain required permits to perform tests. Perform and meet tests required by ANSI/ASME A17.2.

Schedule tests with authority having jurisdiction with [Architect/Engineer,] [Owner,] [and] [Contractor] present.

Furnish test and approval certificates issued by jurisdictional authorities.

ADJUSTING

Adjust work under provisions of Section [01700] [________].

Adjust for smooth acceleration and deceleration of car.

Adjust automatic levelling feature at each landing to within [1/4] [____] inch ([6] [____] mm) from flush.

CLEANING

Clean work under provisions of [01700] [________].

Remove protective coverings from finished surfaces.

Clean surfaces and components ready for inspection.

END OF SECTION