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SECTION 14421
WHEELCHAIR LIFTS
NOTE ** This section is based on inclined wheelchair
platform lifts manufactured by Garaventa, located
at:
NOTE ** 7505 - 134A Street US Mailing Address:
NOTE ** Surrey, BC PO Box 1769
NOTE ** Canada V3W 7B3 Blaine, WA 98231-
1769
NOTE ** Tel: (604) 594-0422 or (800) 663-6556
NOTE ** Fax: (604) 594-9915
NOTE ** E-mail: bbell@garaventa.com
NOTE ** The section includes interior electrically operated
lifts running on tubular guide rails along standard
stairways serving two landings with two stops.
Ramps may be manually or electrically operated,
with optional safety arms. Also included are self-
contained emergency evacuation chairs for providing
means of egress for persons unable to walk down
stairs. Garaventa also manufactures wheelchair
lifts for outdoor applications and wheelchair lifts
serving more than two landings; see their Section
14420.
NOTE **
NOTE ** SECTION 14421 - WHEELCHAIR LIFTS, Copyright 1998,
The Architect's Catalog, Inc.
PART 1 GENERAL
1.1 SECTION INCLUDES
NOTE ** This section is organized to produce a
specification for a single type of lift and one of
3 basic platform types. If more than one type is
required, it will be necessary to prepare more than
one version of this section or edit the section to
indicate which features apply to which lift. It
may also be desirable to indicate which basic type
each lift is in the list below.
A. Inclined wheelchair platform lifts for interior
installation, including:
1. Driving machine housed in a locked cabinet.
2. Platform.
3. Guide rails.
4. Control system, signals, electrical wiring, and
devices necessary to provide specified or code-
required performance, operation, safety, and security
to complete lift assembly.
NOTE ** Delete items not required for project. Add items
as required. A support tower might not be needed
if the structure can carry the weight of the lift
directly. Handrails can be provided by the lift
manufacturer if desired.
5. Support towers.
6. Handrails and infill panels.
B. Emergency Evacuation Chairs.
C. Products Furnished but Not Installed:
1. Sleeves, inserts and anchoring devices required for
the attachment to substrate surfaces.
1.2 RELATED SECTIONS
A. Division 16 - Electrical service to each lift drive
cabinet, including fused disconnect switch.
1. Power supply of 208 or 240 volt AC, single phase.
2. Control voltage circuit breaker rating 20 amps.
1.3 REFERENCES
NOTE ** Delete references from the list below that are not
actually required by the text of the edited
section.
A. ADAAG - Americans with Disabilities Act, Accessibility
Guidelines.
B. ANSI A117.1 - Providing Accessibility and Usability for
Physically Handicapped People.
C. ASME/ANSI A17.1 - Safety Code for Elevators and
Escalators.
D. ASTM A 312 - Standard Specification for Seamless and
Welded Austenitic Stainless Steel Pipe.
E. CAN/CSA-B355-M92 - Lifts for Persons with Physical
Disabilities.
F. NFPA 70 - National Electrical Code.
1.4 SUBMITTALS
A. Product Data: Submit manufacturer's product data and
installation instructions for the type of wheelchair lift
system required. Include the following:
1. Each item, accessory and option required.
2. Equipment capacity, performance, operation and
finishes.
3. Controls, safety features and similar information.
4. Drive system and components.
B. Shop Drawings: Submit shop drawings for the type of
wheelchair lift system required. Show the following:
1. Dimensioned drawings including plans, elevations and
sections to show equipment locations, interfaces with
stairway and adjacent substrates, landings served and
travel distances.
2. Details of assembly, erection, anchorage and
clearance requirements.
3. Loads imposed on building structure at points of
support and other similar considerations for the
installation of the lift.
C. Samples for Color Selection: Submit manufacturer's color
charts showing full range of available colors and
finishes for initial color and finish selection of
exposed materials.
D. Samples for Verification: When requested, submit samples
for verification of selected material colors and finishes
for platforms, guide-rails, drive cabinets, signal
devices and control stations.
E. Certificates and Permits: Submit inspection/acceptance
certificates and operating permits required by governing
authorities to allow normal unrestricted use of
wheelchair lifts.
F. Operation and Maintenance Manuals: Submit bound manuals
for the type of wheelchair lift required, with operating
and maintenance instructions, parts listing with sources
indicated, recommended parts inventory listing, emergency
instructions, warranty duration and similar information.
G. Warranty: Submit manufacturer's standard wheelchair lift
warranty.
1.5 QUALITY ASSURANCE
A. Manufacturers Qualifications: A company with not less
than twenty (20) years of experience in the design,
fabrication, installation and maintenance of inclined
platform lifts of the type, quality and character
required.
NOTE ** If the following requirement is important, insert
the maximum distance in the blank.
1. Manufacturer shall have a service office and
warehouse of parts within a ______ mile radius of
project site.
B. Installer Qualifications: The lift manufacturer or a
qualified, authorized agent of the lift manufacturer with
not less than ten (10) years of experience installing and
servicing inclined wheelchair platform lifts of the type
required.
C. Design Requirements: Wheelchair lift systems shall be
certified by a licensed Professional Engineer experienced
in the design of inclined wheelchair platform lifts in
accordance with applicable codes.
D. Regulatory Requirements: Materials and construction
shall comply with the current edition of the following
codes, standards and guidelines.
NOTE ** Delete any of the following regulations that do not
apply to this project. If necessary, verify current
edition date.
1. ASME/ANSI A17.1 "Safety Code for Elevators and
Escalators", Part XX (Commercial and Public
Buildings).
2. CAN/CSA-B355-M92 "Lifts for Persons with Physical
Disabilities."
3. ANSI A117.1, "Providing Accessibility and Usability
for Physically Handicapped People."
4. NFPA No 70, National Electric Code.
5. ADAAG Americans with Disabilities Act Accessibility
Guidelines.
6. Provide CSA or UL tested and labeled mechanical and
electrical equipment.
NOTE ** If the local building code contains additional
requirements relating to wheelchair lifts, enter
the name of the local building code in the blank.
7. ___________________ Building Code.
1.6 DELIVERY, STORAGE AND HANDLING
A. Provide wheelchair lift materials, components and
equipment wrapped, boxed, or crated to protect factory
finishes.
B. Deliver, store, protect and handle wheelchair lift
materials and components in accordance with the
manufacturer's recommendations to prevent damage, soiling
or deterioration.
1.7 PROJECT CONDITIONS
A. Field verify installation dimensions and conditions. Show
modifications required to accommodate the required
wheelchair lift on shop drawings.
B. Arrange for required inspections and tests. Obtain
inspection/acceptance certificates and initial operating
permits required by local governing authorities and turn
over to the Owner upon acceptance of the work.
NOTE ** Delete one of the following 2 paragraphs.
1. Costs of inspections, tests and permits will be paid
for by Owner.
2. Costs of inspections, tests and permits will be paid
for by installer.
1.8 WARRANTY
A. Warranty: Manufacturer shall warrant the wheelchair lift
materials and workmanship for one year following
completion of the installation. Warranty shall include
replacement of defective parts not due to ordinary wear
during use or improper use.
NOTE ** Extended warranty is available for 3-year and 5-
year periods, provided the maintenance agreement
specified below is also included for the same time
period. Edit the time period if less than 5 years.
Delete extended warranty if not required.
Maintenance agreement may be included even if
extended warranty is not.
B. Extended Warranty: Manufacturer shall warrant the
wheelchair lift materials and workmanship for five years
following completion of the installation and execution of
a preventative maintenance program agreement for five
years. Warranty shall include replacement of defective
parts not due to ordinary wear during use or improper
use.
1.9 OWNER'S INSTRUCTIONS
A. Upon completion of the installation, instruct Owner's
designated personnel in the proper use, operation and
daily maintenance requirements of wheelchair lifts.
Review emergency provisions, including access and
provisions to be followed in operation or other building
emergency conditions. Train Owner's personnel in
procedures to follow in identifying sources of
operational failures or malfunctions.
B. Coordinate preventative maintenance program service
schedule and requirements with Owner's designated
personnel.
1.10 MAINTENANCE
NOTE ** Delete this article entirely if maintenance service
is not included in the Contract Sum. This service
can be contracted separately. Coordinate with
requirements for extended warranty above.
A. Preventative Maintenance Program: Provide preventative
maintenance of wheelchair lift units. Maintenance
service shall be carried out not less than every six
months. Correct operational imperfections and restore or
replace defective or deteriorated components and
finishes. Use only genuine parts, components, and
supplies as used in the manufacture and installation of
original equipment.
NOTE ** Delete all but one of the following 3 paragraphs.
Coordinate maintenance period with requirements for
extended warranty above (maintenance period and
warranty period should match). Edit maintenance
period if required.
1. Maintenance program period: 12 months following
completion of the installation.
2. Maintenance program period: 36 months following
completion of the installation.
3. Maintenance program period: 60 months following
completion of the installation.
4. Include the following services:
a. Clean and lubricate as required. Supply required
lubricants and touch-up paint.
b. Check electrical and mechanical operation and
make minor adjustments as necessary.
c. Recommend repairs or replacement of parts needed
to ensure reliable operation.
d. Test operation and safety systems.
e. Other services as required.
5. Provide regular and 24 hour emergency callback
service as part of the maintenance service.
B. Maintenance service shall be performed solely by the
manufacturer or an authorized manufacturer's
representative and shall not be assigned or transferred
to any other agent, party or subcontractor.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. Provide products manufactured by Garaventa, P.O. Box
1769, Blaine WA 98231-1769; or 7505-134A Street, Surrey,
BC V3W7B3; ASD. Tel: (800) 663-6556 or (604) 594-0422,
Fax: (604) 594-9915, E-mail: bbell@garaventa.com.
2.2 WHEELCHAIR LIFTS
A. General: Provide manufacturer's standard pre-engineered
lift system that complies with specified requirements.
Provide Garaventa Stair-Lift products as indicated in
Garaventa "Design and Planning Guide" and as specified
for complete inclined stairway wheelchair lift systems.
B. Wheelchair Lift: Garaventa Stair-Lift Model GSL-2:
1. Configuration: An inclined wheelchair platform lift
that travels on square rails along the edge of
stairways.
2. Operation: Independent or attendant operation, keyed
controlled constant pressure switches at platform
controls and landing call stations.
3. Rated load: 495 lbs (225 kg); limited to one person,
with minimum five times safety factor.
4. Rated speed: 20 ft (6 meters) per minute.
5. Number of Stops: 2.
NOTE ** Maximum incline is 40 degrees, measured on the
mean. Delete one of the following 2 paragraphs.
If the incline is to be specified, enter the angle
in the blank.
6. Incline: As indicated on drawings.
7. Incline: ______ degrees.
NOTE ** Delete one of the following 2 paragraphs. Verify
that electrical power characteristics required by
manufacturer are compatible with building power
supply and coordinate with power supply specified
under Related Sections.
8. Power supply: 208 volt AC, single phase, 60 hertz.
9. Power supply: 240 volt AC, single phase, 60 hertz.
10. Operating controls voltage: 24 volt DC.
NOTE ** Delete all but one of the following 3 platform
types. Type S has manually operated ramps. Type
SP and SPC have electrically operated ramps and
folding platform. In addition, Type SPC has
electrically operated safety arms. Type S can be
upgraded to SP after installation; SP be upgraded
to SPC.
C. Platform: "Type S"; manual folding and unfolding
platform and loading ramps.
D. Platform: "Type SP"; electrically operated folding and
unfolding platform and ramps.
E. Platform: "Type SPC"; electrically operated folding and
unfolding platform, ramps and safety arms.
NOTE ** Delete one of the following 2 paragraphs. Custom
widths and longer ramps are available. Insert
dimensions in blank.
1. Width: 30 inches (760 mm).
2. Width: __________________.
3. Platform length:
NOTE ** Delete all but one of the following 3 paragraphs.
The first (1220) is the minimum US-ADA dimension.
a. 1220 Platform: 48 inches (1220 mm).
b. 1050 Platform: 41 inches (1050 mm).
c. 900 Platform: 35.4 inches (900 mm).
4. Provide non-slip platform deck and ramp surfaces.
5. Ramps: Provide loading ramps 6 inches (150 mm) high,
when folded, to prevent accidental wheelchair roll-
off.
a. Loading ramps shall be mechanically and
electrically interlocked during travel, to
prevent lift travel unless ramps are raised and
to prevent lowering ramps during lift travel.
NOTE ** Delete the following 2 paragraphs for Type S.
Retain the first paragraph for Type SP, the second
for Type SPC.
b. Ramps: Loading ramps raised and lowered
electrically, only when platform is unfolded and
at rest at a landing.
c. Ramps: Loading ramps raised and lowered
electrically, operated in sequence with the
correct safety arm, only when the platform is
unfolded and at rest at a landing.
NOTE ** Delete the following paragraph if side-loading
platform is not required. Side-loading platform is
often required when landing clearances are limited.
Delete for Type S platform.
d. Side-load platform: Provide 6 inch (150 mm) high
side loading ramp for passenger loading access
from virtually any direction. Sideload ramp
motor shall not be mounted on platform surface
area.
6. Kick-plate: 6 inches (150 mm) high, functions as
vandal resistant cover to protect platform control
switches when in folded position.
NOTE ** The following safety arms are optional on Type S
and SP platforms. Delete if not desired, or if
Type SPC is used.
7. Safety arms: "Bar-Guard" manually operated safety
arms at each end of the platform.
NOTE ** Delete the following paragraph for Type S and SP
platform - standard on SPC.
8. Safety arms: Provide electrically operated safety
arms at each end of the platform.
NOTE ** The following grab rails are optional on Type S and
SP platforms; delete if not desired.
9. Grab-rails: Provide passenger grab-rail installed on
the platform.
10. Clearances - direct mounted: The folded platform
shall not protrude more than 13.5 inches (341 mm)
from inner wall. (Variations may apply when
technically infeasible). When unfolded and in use,
platform shall not protrude more than 39.5 inches
(1005 mm) from inner wall.
11. Carriages: Provide upper and lower carriages for
supporting the platform on the guide-rails and
guiding the platform up and down the guide-rail tube
system.
12. Platform operation:
a. A smooth start/stop shall be provided when
entering/departing landing zone.
b. Platform shall negotiate vertical and horizontal
bends and transitions smoothly with one unit,
without transfer.
c. Platform carriages shall be equipped with nylon
rollers that permit the carriage to run smoothly
on the guide-rail.
13. Platform travel safeties: Stop the lift when
travelling in folded or unfolded position and an
obstruction causing four pounds or more pressure is
met. Provide the following sensing devices:
a. Under-platform touch-sensitive plate.
b. Under-hanger touch-sensitive plate.
c. Multi-directional touch-sensitive ramps.
14. Platform parking: When the lift is not being used,
the platform shall be parked in the folded position
away from the stairway at the lower landing.
NOTE ** The following paragraph covers a non-standard
option for Type S platform. Delete if not desired.
15. Security platform lock: Manual security lock
utilizing operation key provided by the manufacturer
to prevent unauthorized unfolding of platform.
NOTE ** The following paragraph covers a non-standard
option for Type SP and SPC platforms. Delete if
not required, or if Type S is used.
16. Security platform lock: Solenoid security lock
operated from the call station to prevent
unauthorized unfolding of platform. Automatically
unlocks platform when unfolding platform from the
call station.
NOTE ** The following 3 paragraphs cover options not
standard. Delete if not desired.
17. Fold-down seat: Manual fold-down seat complete with
armrests and safety belt mounted upon the platform.
18. Platform light: Deck light platform area
illumination. An integral lamp which activates
automatically when the platform is in the unfolded
position. Provided in combination with the fold-down
seat.
19. Platform storage: Platform shall be able to be
stored in the "park beyond" position at the upper
landing.
2.3 OPERATING CONTROLS AND SIGNALS
A. Control System: Provide key-operated switch at each
control station that permits "up" and "down" switches to
become effective only when the key is in the "on"
position. Controls shall comply with requirements of
ANSI A117.1 and ASME/ANSI A17.1.
1. Platform controls:
a. Key switch, constant pressure directional paddle
switch, emergency stop button, and plug-in
extension control for attendant or passenger
operation.
b. Safe-to-go Ready Lamp indicating safety circuits
are clear and lift is ready to operate.
2. Call station controls: Provide at each landing:
NOTE ** Delete all but one of the Upper Landing paragraphs,
and all but one of the Lower Landing paragraphs.
a. Upper landing: Mounted on tubular guide-rails
adjacent to Drive Cabinet.
b. Upper landing: Wall mounted.
c. Upper landing: Tower mounted.
d. Upper landing: Mounted on Drive Cabinet.
e. Lower landing: Wall mounted in surface-mounted
fitting as indicated.
f. Lower landing: Wall mounted in recessed flush-
mount fitting as indicated.
g. Lower landing: Free-standing as indicated.
h. "Power-on" lamp, key switch, "station-activated"
lamp, "fault" lamp, constant pressure platform
call/send paddle switch, "lift-location" lamp.
NOTE ** Delete the following 2 paragraphs if Type S
platform is used. Retain first paragraph for Type
SP and second paragraph for Type SPC.
i. Constant pressure switch to fold and unfold the
platform and to operate loading ramps.
j. Constant pressure switch to fold and unfold the
platform and to operate the loading ramps and
safety arms.
NOTE ** Delete the following call station options if not
required.
3. Call station control options:
a. Constant pressure attendant call switch in call
station.
b. Constant pressure emergency stop switch in call
station.
4. Attendant operation: Provide manufacturer's standard
plug-in, hand-held attendant control unit with each
wheelchair lift required.
a. Key switch, constant pressure directional paddle
switch and emergency stop button.
b. Provide a removable lockout cover on the platform
control station directional paddle switch when
required by local governing authorities.
5. Leveling tolerance: Provide terminal stopping system
at each extreme of travel and adjust to maintain
level tolerance within 1/2 inch (13 mm) regardless of
load size or direction of travel.
6. Limit switches: Provide at both top and bottom
extremes of travel.
7. Obstruction sensors: Provide sensors to cut power
and stop unit in the event of contact with foreign
object within pathway of travel. Comply with
applicable codes.
8. Safety device: Provide safety device to stop
platform in event of overspeed condition or breakage
or slackening of suspension of support means.
9. Manual lowering: Provide means to manually lower
platform in case of malfunction or power loss.
10. Manual folding: Provide means to manually fold
platform in case of malfunction or power loss.
NOTE ** Delete any of the following safety options not
required. The AV option may be required by local
building authorities; the LEA and ERA options
comply with ANSI A17.1, Rule 2000.11.
B. Safety Signal Options:
1. Audio-Visual Alert (AV): Provide wall-mounted Audio-
Visual Pedestrian Alert devices within designated
stairways to alert stairway pedestrians that the
wheelchair lift is being operated. Device shall
contain a tri-octave audio chime and flashing amber
strobe which is activated when the platform is in
motion or unfolded in a stationary position.
2. Local Emergency Alarm (LEA): Provide an emergency
alarm system from the platform for emergency
assistance for the passenger. Pressing the platform
control emergency stop button shall sound an audible
signal in the vicinity of the drive box and at a
receiver console. Include backup battery operation
to ensure help is summoned in a power outage.
3. Emergency Remote Alarm (ERA) - radio transmitted:
Provide an emergency remote alarm system from the
platform for emergency assistance for the passenger.
Pressing the platform control emergency stop button
shall transmit a signal to a receiver console, which
shall provide an audible alarm and a visible light
indicator that help is needed. Include backup
battery operation to ensure help is summoned in a
power outage.
NOTE ** Delete one of the following 2 paragraphs. If
known, enter the location of the receiver console
in the blank.
a. Locate receiver console where indicated.
b. Locate receiver console at _____________.
C. Fire Service Controls: Provide fire service to ensure
lift is not used for emergency egress and does not impede
emergency egress stairway traffic.
1. When fire alarm is activated, lift shall not operate
if platform is folded and key is turned off.
2. If the lift is in use when fire alarm is activated,
the lift shall travel only in one direction - towards
the landing that is designated as the emergency exit.
2.4 DRIVE SYSTEM
A. Drive System Components: Provide wheelchair drive system
components, including the motor, gearbox and controller,
contained within a locked drive system cabinet.
1. Drive system cabinet: Steel cabinet, 63 inches (1600
mm) high by 11 inches (280 mm) wide by 7.9 inches
(200 mm) deep. Located at the top landing of the
wheelchair lift system; locked to prevent
unauthorized access.
2. Drive system motor: 1 HP/200/240 volts AC.
a. Fit motor with an electrically released spring-
set brake to stop automatically at landings.
3. Provide handwheel for emergency drive system
operation during power failure.
4. Gearbox: Drive system features a toothed belt drive
from the motor to a sealed lubrication gearbox with
64:1 reduction. The gearbox output shaft drives the
cog which engages the roller chain.
5. Power supply: As indicated above. Locate disconnect
and thermal overload device on the side of the drive
cabinet.
2.5 RAIL SYSTEM
NOTE ** Select support tower from the following two
paragraphs; delete both paragraphs if support tower
not required.
A. Support Tower: Structural steel, self-supporting, free-
standing support structure.
B. Support Tower: Stainless steel, self-supporting, free-
standing support structure.
NOTE ** Verify structural conditions for tower. The
following description is fairly normal for an
existing structure, but does have structural
impact.
1. Provide tower framing that requires vertical-load
support only at base and lateral support only at
landing levels.
C. Guide-Rails: Three 2-1/2 inch (65 mm) square tubular
steel rails.
1. Tubes shall run along edge of stair flights and
horizontal landings throughout the length of travel.
2. Provide direct mount vertical steel distance struts,
spaced as required, to maintain vertical separation
distance of guide-rail tubes. Weld guide-rails to
distance struts.
NOTE ** The following three paragraphs cover handrails that
are optional. Coordinate with other construction
and with stair railings specified elsewhere.
D. Handrails: Provide additional handrails in compliance
with code at the standard handrail height for pedestrian
use, in same plane as guide-rail tubes. Match material
and finish of guide-rail tube.
E. Matching Handrails: Provide matching handrails at
opposite side of stairway and for other areas of the
building where indicated. Match material and finish of
guide-rail tube.
F. Infill panels: Provide infill panels at locations
indicated.
NOTE ** Delete all but one of the following panel
descriptions.
1. Panels: Woven wire mesh, 2 inch (50 mm) square,
welded to a 1 inch (25 mm) angle frame. Painted
finish matching guide-rail system.
2. Panels: Design indicated, painted finish matching
guide-rail system.
3. Panels: _________________________
2.6 FINISHES
NOTE ** Baked powder coating is standard. Zinc-plated and
stainless steel finishes are optional and would be
used for exterior installations.
A. All Exposed Steel Members: Electrostatically applied
baked powder coating.
B. All Exposed Steel Members: Electrostatically applied
baked powder coating paint finish, unless otherwise
indicated.
NOTE ** Delete all but one of the following seven color
paragraphs. Consult manufacturer on availability
of custom colors.
1. Color: As selected by the Architect from
manufacturer's full range, standard and non-standard.
2. Color: Custom color to be selected from Garaventa.
NOTE ** The first two colors in the following paragraphs
are standard; the next three are optional colors.
3. Color: Cool Grey.
4. Color: Sahara Sand.
5. Color: Evening Rose.
6. Color: Teal Green.
7. Color: Pacific Blue.
NOTE ** Use the following paragraph if all components are
to be stainless steel. Delete if standard baked
enamel finish is acceptable, or if only certain
components are to be stainless steel.
C. All Exposed Steel Members: Electro-polished finish
stainless steel.
NOTE ** Use the following paragraph if only certain
components are to be stainless steel, with the
remainder either baked enamel or zinc-coated. The
following components can be stainless for an
exterior installation.
D. Stainless Steel Finish: Electro-polished; use for the
following components:
NOTE ** Delete any components not applicable. Add others
as required.
1. Drive cabinet.
2. Under-platform touch sensitive plate.
3. Guide-rail distance struts.
4. Towers.
5. Call stations.
6. Call station pedestals.
7. Audio/visual alert signals.
NOTE ** The following emergency evacuation chairs are not
part of the wheelchair lift, but provide means of
egress for people with a disability when the lift
cannot be used, such as during a fire when
elevators also cannot be used. The Garaventa Evacu-
Trac is a device that allows even a petite
attendant to safely move a person weighing up to
360 pounds down stairways. The chair, designed
with two long, steel-reinforced rubber tracks, an
overspeed governor, and a release brake, is
extremely stable and secure on stairs. It allows a
person with a disability to escape the building,
rather than having to wait to be rescued.
2.7 EMERGENCY EVACUATION CHAIRS
A. Emergency Evacuation Chairs: Housed in steel storage
cabinet located adjacent to each landing floor above
ground level. Comply with the following:
1. Type: Garaventa Evacu-Trac.
2. Capacity: 1 person, 360 pounds (163 kg) with minimum
1.5 times safety factor.
3. Approval: Tested and approved by recognized
independent testing lab.
4. Maximum stair angle: 40 degrees.
5. Descending speed: Maximum 4 feet (1.2 m) per second.
6. Speed governor: Piston brake.
7. Stop brake: Manual mechanical brake, attendant must
release for descent.
8. Storage: Steel cabinet, Plexiglass door panel.
9. Cabinet dimensions (approximate): 21.5 inches (545
mm) wide x 11 inches (275 mm) high x 44.5 inches (275
mm) deep.
PART 3 EXECUTION
3.1 EXAMINATION
A. Before starting wheelchair lift installation, inspect
substrates and supporting structures as constructed,
verify critical dimensions, and examine conditions under
which wheelchair lift work is to be installed.
B. Do not proceed with wheelchair lift installation until
unsatisfactory conditions have been corrected in a manner
acceptable to the installer.
C. Installation constitutes acceptance of existing
conditions and responsibility for satisfactory
performance.
3.2 INSTALLATION
A. General: Comply with manufacturer's instructions and
recommendations for work required during installation.
NOTE ** Delete one of the following 2 paragraphs.
1. Comply with requirements of ASME/ANSI A17.1 for
inclined wheelchair platform lift design, materials,
methods of construction and installation.
2. Comply with requirements of CAN/CSA-B355-M92 for
inclined wheelchair platform lift design, materials,
methods of construction and installation.
3. Comply with the National Electrical Code for
electrical work required during installation.
4. Perform work with competent, skilled workers under
the direct control and supervision of the wheelchair
lift installer's experienced foreman.
B. Supply in ample time for installation by other trades,
inserts, anchors, bearing plates, brackets, supports, and
bracing including all setting templates and diagrams for
placement.
C. Coordination: Coordinate wheelchair lift work with the
work of other trades, for proper time and sequence to
avoid construction delays.
D. Operation: Install drive machines, guide-rails,
controls, car operating controls and all equipment and
accessories to provide a quiet, smoothly operating
installation, free from side sway, oscillation or
vibration.
E. Alignment: Coordinate platform travel and positioning,
for accurate alignment and minimum clearance between
platform and floor level at each stop and landing served.
F. Leveling: Adjust stops for accurate leveling at each
landing, within specified tolerances.
G. Lubricate operating parts of each lift, including drive
system mechanisms, guide-rail systems, platform ramps,
safety devices, and hardware.
3.3 FIELD QUALITY CONTROL
A. Acceptance Testing: Upon completion of the wheelchair
lift installation and before permitting use of lift
system, perform acceptance tests as required and
recommended by code and governing authorities.
1. Advise Owner and governing agencies in advance of
dates and times tests are to be performed on the
wheelchair lift.
B. Cycle Testing: Test operate unloaded lift, continuously
between lowest and highest landings served. Perform
complete lift operation cycles, including ramp operation
from the platform controls and call stations for a
minimum period of 30 minutes. Adjust controls, stops and
other devices for accurate landings and operation of
system after completion of test.
C. Make necessary adjustments of operating devices and
equipment to ensure wheelchair lift operates smoothly and
accurately.
3.4 CLEANING
A. Before final acceptance, remove protection from finished
surfaces and clean surfaces in accordance with
manufacturer's recommendations for type of material and
finish provided.
B. At completion of wheelchair lift work, remove tools,
equipment, and surplus materials from site. Clean work
areas. Remove trash and debris.
END OF SECTION
