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STRUCTURE
Guide rails are constructed from structural steel angle.
Carriage uses steel channel for vertical members and
header. Carriage deck (platform) is built from solid
steel plate on a square steel tube frame. All sides
covered with 1/2” expanded metal for a fully
enclosed lift. |
ELECTRICAL
Control voltage is 24V for all switches and momentary
push button stations. Push button stations are
NEMA 12. |
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SAFETY
SYSTEMS
Fail-safe electric brake locks the carriage in place in the
event of a power failure. Slack cable switches shut off
the motor if the cables become slack. Broken cable brakes
prevent the carriage from falling in the unlikely event of
a cable failure. Limit switches provide accurate leveling
at each level. “NO RIDER” signs are on carriage and
at each entry point. Double swing interlocked gates
prevent access to the carriage while in motion and
when not present at that level. |
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OPERATION
Illuminated push-button stations at each level allow full
call/send capabilities, inform the operator of carriage
position and indicate door open. Mushroom style
E-Stop buttons are included in every call station. |
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CARRIAGE
Carriage is built as one piece for added strength. Platform
panels are provided on non-operating sides of the
carriage and snap chains on operating sides for safety. |
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MECHANICAL
DRIVE
The carriage is moved by using an electric failsafe
brake motor and reducer. Dual cables and drums
provide extra safety and durability. This drive system
requires very little maintenance. Electric brake motor
prevents carriage drift. |
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ARCHITECTURAL
SPECIFICATIONS
VERTICAL RECIPROCATING CONVEYOR
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| PART
1: GENERAL |
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| 1.01:
OVERVIEW |
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A.
Design and manufacturing of one (1) modular straddle type (Pallet
Master) Vertical Reciprocating Conveyor
(VRC) including mechanical drive unit, operator controls, safety
gates and enclosures as shown on project
drawings and as specified herein. |
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| 1.02:
REFERENCES |
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A.
ANSI - American National Standards Institute (ANSI B20.1) |
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B.
ASME - American Society of Mechanical Engineers (ASME B20.1) |
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C.
NEMA - National Electrical Manufacturer's Association |
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| 1.03:
SUBMITTALS |
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A.
Product Data: Submit latest edition of Modular Straddle VRC
(Pallet Master) datasheet and general drawings
with the proposal. |
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B.
Customer Drawings: |
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1.
Submit Customer Engineering Drawings for customer approval within
1 week after receipt of an order to include
plans, elevations, sections of the VRC, base plate and lateral
loading values, and recommended pit dimensions if applicable. |
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2.
Submit VRC Specification Sheet for approval within two business
days of receipt of an order to include scope
of work, operating and control voltages, lift speed, type of
finish, and any special project notes. |
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C.
Closeout Submittals provided with VRC Equipment: |
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1.
Electrical Schematics Drawing including control panel layout
and Bill of Material reflecting original
manufactured part numbers. |
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2.
Mechanical Installation Manual and Electrical Installation Guide. |
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3.
Digital Control Panel trouble shooting guide. |
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4.
Owner's Manual including replacement parts list, exploded parts
drawings, operating instructions, maintenance
schedule, and service and troubleshooting guidelines. |
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| 1.04:
QUALITY ASSURANCE |
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A.
Manufacturer must have a minimum of five (5) years experience
in the manufacturing of vertical
reciprocating conveyors. |
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B.
Vertical Reciprocating Conveyors (VRC) are covered by ANSI/ASME
B20.1 Safety Standards for
Conveyors. |
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C.
Installer must have the approval of FSI and have a minimum of
five (5) years experience in the installation
of vertical material lifts. |
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| 1.05:
WARRANTY |
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A.
The manufacturer shall warrant the VRC against manufacturing
defects from date of installation as outlined below: |
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1.
Electric Motor and Cyclo-Drive Reducer - two (2) years. |
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2.
Electrical Components - ninety (90) days. |
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3.
Mechanical Components - one (1) year. |
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| PART
2: PRODUCTS |
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2.01:
VRC MECHANICAL SPECIFICATIONS |
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A.
Load Capacity: The VRC shall be rated at a live load capacity
of _______ lbs. |
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B.
Operating Speed: The VRC shall have a vertical lifting speed
of 20 - 25 feet per minute when loaded to
maximum capacity. |
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C.
Vertical Travel Height: The VRC shall have a vertical lifting
height of _____ inches with a total of _____ landings
(including lowest level) with a distance between floors of ______
inches. |
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D.
Lift Carriage: The VRC carriage shall be a minimum of _____
inches wide x _____ inches deep x 72" load
height with a steel deck plate and minimum of 48" high
welded or bolt-on side panels on all non-operating ends
and safety chains with snap hooks on all operating ends. |
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E.
Vertical Masts: The VRC shall have a two (2) 4", 13 lb.
per foot structural grade steel C-channel beams. |
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F.
Deflection Under Load: No portion of the VRC shall exhibit permanent
deflection when loaded to full capacity. |
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G.
Shock Load: The VRC must be able to withstand a shock load of
at least 500% to ensure safety. |
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H.
Lifting Means: The drive system shall be comprised of two (2)
drums transmitting lifting forces through two
(2) wire rope cables to the upper cross member of the carriage
with leveling adjustments. The electrical drive
motor shall be 100% duty cycle coupled with a Cyclo-Drive gear
reducer with a shock load rating of 500%.
Planetary or helical gear reducers are not allowed. |
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I.
Safety Brakes and Devices: The Carriage shall be equipped with
two (2) broken/slack cable brakes that
prevent the carriage from descending more than 6" if tension
is lost on either cable. Slack cable switches are
required to disable motor power in the event a cable becomes
slack or broken. |
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J.
Security Enclosures: Guarding on all sides of the VRC to extend
the full height of the unit shall be security
enclosures consisting of expanded metal which will reject a
½" diameter ball. Enclosures shall be welded
securely to the vertical masts. |
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K.
Landing Gates: Gates are required on all operating sides of
the VRC at each level of operation. |
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1.
The gates shall be double swing type. |
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2.
Each gate must be equipped with an elevator approved electro-mechanical
interlock to prevent opening
of the gate unless the carriage is present and to prevent operation
unless all gates are closed. |
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L.
Signage: Signs dictating "NO RIDERS" and maximum weight
capacity shall be placed at every access point and
visible from all operating ends of the carriage. |
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M.
Approach Ramp: If pit mounting is not specified, the manufacturer
shall supply a steel fabricated 4" high
approach ramp to be installed within ½" of the VRC
carriage at the ground level. |
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N.
Power Requirements: The VRC shall be manufactured to operate
on 230 volts / 3 phase / 60 hertz power.
Controls voltage must be no greater than 24 volts. |
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O.
Load Pattern: The pattern for loading and unloading the carriage
at different levels must be a "Z" or
"C" configuration. |
| 2.03:
VRC ELECTRICAL SPECIFICATIONS |
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A.
Electric Motor: |
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1.
The motor shall have a minimum duty cycle of 100%. |
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2.
The motor and Cyclo-Drive gear reducer must be able to withstand
a shock load of at least 500% to ensure
safety. |
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3. Motor horsepower shall be sized to handle the carriage weight
in addition to the rated live load and
specified speed. |
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4.
All motors are three phase and shall be designed for continuous
duty at ambient temperatures for 32° to 102°
Fahrenheit |
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5.
The motor shall not automatically restart when the overload
device is reset. |
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6.
The motor shall be equipped with a heavy-duty, long life, fast-acting
fail-safe disc brake to ensure the brake
will hold in case of power failure. |
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B.
Controls: |
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1.
Each operating floor shall be equipped with a momentary contact
push-button control station with full call,
send and mushroom style E-stop switches for manual control of
lift operation. |
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2.
An internally pre-wired, NEMA 12 rated Intelitroll self-diagnostic
control panel shall be provided with
appropriate transformer, overload relay, phase monitor device,
field wiring terminal block and breakers. |
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3.
Limit Switches: The VRC shall be equipped with a floor level
switch at each level, upper level, and over
travel limit switch to provide precise positioning of the carriage. |
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4.
Slack Cable Safety Switches: Switches shall be provided to monitor
slack cable situations and disable
power to the motor while engaging carriage safety brakes in
the event of a slack or broken cable. |
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5.
Pre-Wired: The VRC shall be pre-wired at factory and tested
prior to shipping. Pre-wire shall consist
of proper wiring of limit switches, slack cable switches, motor,
interlocks and pushbutton stations to control
panel. |
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6. The control voltage shall not exceed 24 volts for safety
reasons. |
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C.
Power Source: Owner shall terminate high voltage operating power
within 10 feet of the location designated
for the VRC installation. |
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| 2.04:
FINISHES |
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A.
All carbon steel surfaces shall be coated with an industrial
enamel finish - color CIP slate gray and burgundy. |
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B.
Prior to applying finish, all dirt, mill scale, oil and grease
shall be removed from carbon steel surfaces
by a combination of brushing, wiping and use of solvents. |
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PART
3: EXECUTION |
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3.01:
EXAMINATION |
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A.
Prior to commencing installation of the VRC, the installer shall
visually examine the conditions under which
the VRC is to be installed and notify the architect in writing
of conditions detrimental to the proper and timely
completion of the work. |
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3.02:
INSTALLATION |
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A.
Installer must comply with manufacturer's detailed mechanical
and electrical installation instructions for proper
installation and to meet safety codes. All thresholds and extra
installation materials needed must be supplied
by the installer. |
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| 3.03:
FIELD QUALITY CONTROL |
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A.
Inspection: Upon completion of installation, the VRC shall be
inspected to verify that it meets all
requirements set forth by CIP and Parts 1, 2 and 3 of this Section. |
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B.
Tests: |
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1.
Operating Load Test: The owner will provide a _______ pound
test load and load the VRC at the lowest
level. The loaded VRC carriage shall be conveyed to an upper
floor level and returned to the lowest level to
assure proper operation. If the VRC cannot lift or lower the
load, the VRC shall fail the test. |
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2.
Performance Test: This test is to be performed in conjunction
with Test 1 above. During the demonstration
of the lifting and lowering test, the owner shall measure the
time required to lift and lower the capacity load.
The owner will average times for lifting and lowering the load
and calculate the average feet per minute travel
speed. If the VRC does not lift the load within 10% of the specified
speed, or if the lowering speed exceeds
the lifting speed by more than 10%, the VRC shall fail the test. |
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3.
Stationary Load Test: This test is to be performed in conjunction
with Test 1 above. The loaded VRC
carriage shall remain stationary at an upper level for a minimum
of one (1) hour. After the one (1) hour period,
the VRC will be inspected for deflection of the components or
drift of the platform. If deformation or downward
drift is evident, the VRC shall fail the test. |
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| 3.04:
ADJUSTING AND CLEANUP |
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A.
Installer shall touch up all scratches, abrasions, and other
defects in the pre-finished surfaces with the same
material color and type of finish as that used at time of fabrication. |
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B.
Installer will remove and dispose of all rubbish and debris
caused by the work under this section. |
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C.
Verification that equipment is properly installed in accordance
with manufacturer's guidelines and guarded to
meet or exceed ANSI/ASME B20.1 Safety Standards for Conveyors. |
Load Capacity: up to 4,000 lbs.
