Dumbwaiter & Chairlifts
DUMBWAITERS
GENERAL
These Specifications are intended to provide full maintenance (except as
otherwise indicated) service contracts for the dumbwaiters listed.
SCOPE
The work required of the Contractor consists of the provision of all labor,
materials, equipment, and incidentals as required to maintain the following
dumbwaiters and their associated systems and equipment in proper operating
condition and their hoistways and equipment rooms in a clean and well ordered
condition. Dumbwaiter serial no. 12617 and serial no. 20631 proposal shall be of
the 90-day oil grease type whereas the proposals for all other dumbwaiters shall
be of the full maintenance type.
Location
Bldg 12 East - Courthouse
Bldg 12 East - Courthouse
Bldg 26 52/3 District Court
Serial #
9954
11583
40611
Capacity (Lbs.)
25
300
250
The proposal submitted by the Contractor shall display the monthly charge
for each of the dumbwaiters listed. The Contractor shall state in his
proposal the average number of preventive maintenance hours to be
expended each visit to fulfill this Specification. These hours shall be
exclusive of call back service and repair.
INSPECTIONS, ADJUSTMENTS, REPAIRS, AND REPLACEMENTS
The Contractor shall inspect each dumbwaiter system at least once each month
(exception: elevator s/n 12617 and 20631 shall be inspected at least once every 90
days). The Contractor shall adjust, repair, or replace the following components
(except elevator s/n 12617 and 20631) as conditions warrant:
Machine, worm, gear, thrust bearing, drive sheave, drive sheave
shaft bearings, brake pulley, brake coil, brake contact, lining, and
component parts.
Controller, all relays, resisters, transformers, contacts, leads, overloads,
dashpots, timing devices, and mechanical and electrical driving
equipment, including all hoistway switches.
Motor windings, rotating elements, commutators, brushes, brush holders,
and bearings.
Bearings, shafts, car and counterweight guide rails, car and counterweight
buffers, top and bottom limit switches, car and counterweight guide shoes
including rollers and gibs, counterweights, counterweight frames, car
frame, and machine beams.
Corridor operating stations, signal bulbs, and platform.
Periodically equalize the tension in all hoistway wire ropes to maintain an
adequate factor of safety. Also included are all conductor cables, hoistway
and machine room dumbwaiter wiring.
The Contractor shall conduct bi-annual evaluations of equipment
performance, including car speed, door operations, riding quality, car
leveling, floor to floor time and systems operation including traffic handling
and response time. Following such evaluations, the Contractor shall
perform adjustments required to maintain the manufacturer’s operating
performance standards. Bi-annual performance evaluation reports shall be
submitted to the Owner as part of this agreement. In addition, the
Contractor shall make arrangements to meet with the Owner at least once
every six (6) months to review operation and performance.
The Contractor shall annually submit a written report on the overall condition of
the dumbwaiter systems and outline to the Owner any potential problems or
repairs, and list any improvements that would bring the systems to current state of
technology or any new code requirements for new installations.
TESTS
The Contractor shall include in his proposal all costs for pressure relief tests
required by the State of Michigan Elevator Code.
LUBRICATION
The Contractor shall lubricate all system components as necessary to ensure quiet
and smooth operation and minimize wear. Guide rails shall be lubricated except
where roller or nylon guides are used. Lubricants shall be of type and formula
appropriate for the service and shall be provided by the Contractor.
EXCLUSIONS
The Contractor shall not be required to make repairs or renewals necessitated
because of negligence or misuse of the machinery, equipment, or car due to any
other cause beyond his control except ordinary wear.
The Contractor shall not be required to make safety tests other than those required
by codes in force on the date of the proposal or to install new attachments or
devices on the equipment as directed or recommended by insurance companies or
by governmental authorities, or make any replacement with parts of a design not
compatible with the dumbwaiter system.
The Contractor shall not be required to refinish, replace, or repair:



IV.
elevator car enclosures
car door panels
hoistway enclosures
WHEELCHAIR LIFTS
GENERAL
These Specifications are intended to provide inspection, oil-grease service
contracts for the wheelchair lifts listed.
SCOPE
The work required of the Contractor consists of the provision of all labor,
equipment, and incidentals as required to inspect, oil, and grease the following
wheelchair lifts and their associated systems and equipment:
Location
Bldg 22 East – “L” Building
Bldg 10 East – Law Enforcement Complex
Serial #
Capacity
(Lbs.)
22895
21131
350
450
Type
Passenger
Passenger
The proposal submitted by the Contractor shall display the 90-day charge for each
of the wheelchair lifts listed and the average number of hours which will be
expended each visit to maintain each wheelchair lift. These hours shall be
exclusive of call back service and repairs. If overtime emergency adjustment call
back service should be required, Contractor shall invoice for bonus time hours
only.
INSPECTIONS, ADJUSTMENTS, REPAIRS, AND REPLACEMENTS
The Contractor shall inspect each wheelchair lift system at least once every 90
days and shall adjust limit switches, strike plate, drive motor, v-belt, and pulleys
as conditions warrant.
The Contractor shall conduct bi-annual evaluations of equipment performance,
including car speed, gate operations, riding quality, car leveling, floor to floor
time and systems operation. Following such evaluations, the Contractor shall
perform adjustments required to maintain the manufacturer’s operating
performance standards. Bi-annual performance evaluation reports shall be
submitted to the Owner as part of this agreement. In addition, the Contractor shall
make arrangements to meet with the Owner at least once every six (6) months to
review operation and performance.
The Contractor shall annually submit a written report on the overall condition of
the wheelchair lift systems and outline to the Owner any potential problems or
repairs, and list any improvements that would bring the systems to current state of
technology or any new code requirements for new installations.
EXCLUSIONS
The Contractor shall not be required to refinish, replace, or repair any part of the
wheelchair lift systems.
LUBRICATION
The Contractor shall clean and lubricate system components as necessary to
ensure quiet and smooth operation and minimize wear. The Contractor shall
lubricate the acme screw, guide rollers, top and bottom bearings, and limit
switches. Lubricants shall be of type and formula appropriate for the service and
shall be provided by the Contractor.
SUPPLIES AND HOUSEKEEPING
The Contractor shall provide all the necessary lubricants that are especially
compounded to elevator industry specifications, cleaning compounds, cleaning
tools, and cleaning and wiping materials.
The Contractor shall maintain the machinery and equipment areas in a clean and
orderly condition. All dirt, debris, scrap parts, oil spills, etc., shall be removed.