14-Attachment D - Ford F-750 Thermoplastic Melter Truck - PCN 160179.pdf

FORD F-750 TRUCK MOUNTED THERMOPLASTIC MELTING SYSTEM

PCN 160179

INTRODUCTION:

The following specification is intended to describe and define a truck-mounted thermoplastic melting supply system.

If any of the equipment bid varies from the specifications, such variation(s) must be submitted in writing.

GAS CHASSIS:

The chassis shall be a new, current model year (No Exceptions) purchased from a dealer local to the end user, automotive chassis assembled to meet the specific requirements of this specification.

Manufacturer Ford Year 2026 or newer Model F-750 Wheelbase TBD GVWR 25,999lbs Color: White Fuel Type: Gas

When fully laden with striping material, the chassis manufacturer's GVW rating shall not be exceeded.

The chassis shall have mud flaps in the front and rear.

PLATFORM:

There shall be a steel platform of adequate size mounted on the chassis to accommodate all relevant equipment. The forward bed shall not exceed 96 inches total width and shall be of adequate length. It shall be constructed of 3-inch channel cross-members and minimum 6-inch structural channels so as to support all required equipment. The spacing of these cross members normally shall not exceed 16 inches.

A steel, hinged gate railing, constructed of 1-1/4” square tubing, shall be installed around the storage area of the platform. Grabrails shall also be provided at the ladder areas.

Ladders shall be furnished on both sides of the platform.

The platform shall have a non-skid diamond plate steel safety tread surface.

There shall be a storage area on the platform for 4,000 lbs. of material. (NO APOLLO STORAGE)

An electric lift shall be supplied, operated with a foot pedal to assist with raising the skids of material to a safe loading height to the kettles.

THERMOPLASTIC MELTING KETTLES & COMPONENTS:

Two (2) thermoplastic melting kettles shall be provided. The internal thermoplastic tank of each kettle shall be cylindrical in shape, vertically mounted, have a minimum capacity of 1,000 pounds, and shall be capable of heating block and granulated thermoplastic. The kettle walls shall be air jacketed. Each kettle shall be insulated on all sides to keep materials at a near constant temperature.

The kettle be heated directly by an LPG burner with a minimum rating of 210,000 BTU, the burner shall be mounted on center vertically under kettle and shall have easy access on all sides for maintenance.

The burner flame shall fire upwards toward the bottom of the material tank.

A ¾” 304 stainless steel deflector plate will be mounted between the burner flame and the material kettle bottom plate. The deflector plate shall be easily removable and require no tools for replacement, e.g., welder, torch, or hand tools.

The burner shall be vented at the top of the kettle. Each vent shall be provided with a rain cap with draft protector to prevent rain from entering the heating chamber.

Heat transfer shall be by a 2” minimum heated air jacket surrounding the thermoplastic tank and shall be insulated by 2” thick ceramic mineral wool insulation contained within removable side panels.

Insulation on panels shall not be exposed. Panels must be bolted to the top, bottom, and sides of the steel framework of the kettle and be easily removable for maintenance. Kettle top and bottom shall be insulated with 2” thick ceramic mineral wool insulation and not be exposed. A loose blanket of 2” insulation shall cover the kettle combustion chamber bottom.

A center heated air riser chamber shall allow hot burner air to heat thermoplastic from the center to the outside, effectively increasing the heat transfer area and decreasing the time of agitator startup when heating a kettle with cold material. Heated air riser chamber will extend up at least 40% of the height of the interior material chamber and contain the lower agitator support.

An agitator driven by a low-speed high torque hydraulic motor rotating at approximately 30rpm will be provided. The agitator shall be equipped with three blades spaced, one at the bottom, one at the middle and one just below the full kettle capacity. Agitator blade to side of tank clearance shall be no more than a ¼.” The agitator shaft will be 1 15/16” in diameter and supported by a four-bolt flange style bearing at the top. The lower end of the agitator shaft will have a bolt on replaceable pilot shaft tip and be supported by a replaceable internal race bushing. The shaft will be coupled to the hydraulic motor with a slip shaft type drive coupling that allows vertical movement between agitator shaft and hydraulic motor to compensate for thermal expansion. Jaw or chain type couplings will not be allowed.

Direct reading thermometer to indicate the thermoplastic temperature shall be marked "Thermoplastic".

LPG burner is controlled by an adjustable digital temperature controller with temperature read-out. A safety shutoff shall be installed to shut off fuel and the burner in the event the burner does not ignite and maintain combustion or goes over temperature. Thermocouple probe for temperature control shall measure actual thermoplastic temperature for control of the burner.

Kettle top plate with agitator motor and bearing support shall bolt to the top of kettle; removal shall expose the full inside diameter of the melting chamber for easy cleaning when required. Top plate shall also contain safety loading chute, lift D-Ring and melting chamber hooded exhaust vent. Top of kettle shall be weatherproof this includes loading chute and vent to prevent water from entering the melting chamber.

Loading hatch will be weatherproof and of the safety type. The melting chamber will be covered whether the door is open for loading or closed. The loading door shall open down and out creating a shelf to rest material (block or granular) on prior to loading, the back half of loading door shall close off the melting chamber to minimize any splash back or flash from contacting the operator. When the loading door is closed it shall tip the material into the melting chamber and close off the melting chamber while doing so.

Discharge will be a 4” inch pipe set 50% below melting chamber bottom plate and shall allow full port drainage from kettle. A 3” plug valve will be fitted to start and stop the flow of molten material.

Fork lifting shoes 3” x 9” on 33” centers will be an integral part of the base of kettle.

A hinged inspection door with latch will be placed in the side of the kettle for inspection of the burner combustion area of the kettle. The door will be insulated; door opening dimensions will be 24” wide x 12” high. Opening will be bordered with steel sheet, so no insulation is exposed.

MISCELLANEOUS:

The heating kettle shall be provided with the following miscellaneous requirements.

• Adequate guards to cover moving parts.

• Placards, stencils, and decals indicating potential hazards.

All kettle materials will be constructed of mild steel unless otherwise noted within this specification.

Paint: All exposed metal surfaces shall be primed with a rust and heat preventative and finished in a high heat-resistant paint.

Safety Equipment:

• Two (2) Water Cooler (minimum 1 gallon), mounted on the rear of the platform.

• Face Shield

• Leather Gloves

• Leather Apron

• Respirator

• First Aid Burn Kit

• 20 lb. Fire Extinguisher with Bracket

• 5 LB. Fire Extinguisher with Bracket

• Two (2) Drip Pans

HYDRAULIC POWER:

An LP-fueled, 4-cycle, air-cooled engine to operate the hydraulic pump system shall be supplied. The engine shall be equipped with an air cleaner, muffler, adjustable throttle, and battery charged electric start.

The unit shall have an engine driven hydraulic system to continuously mix the molten plastic, consisting of a high-pressure hydraulic pump and direct drive hydraulic motor.

The hydraulic system shall include a three-position control valve which shall provide for forward and reverse agitation as well as an open to tank position for easy start up. The hydraulic system shall include a reservoir, filter, and proper relief valve to maintain and protect the system.

PROPANE GAS STORAGE AND HOOKUP:

Provisions shall be made for mounting two 100 lb. (customer supplied) and two 20 lb. LP gas tanks (customer supplied) on the forward section of the deck. An upright cross assembly shall be provided to anchor the two 100 lb. tanks as well as the necessary piping, shut-off valves, and flex lines.

TOOLBOXES:

Two (2) weatherproof toolboxes of adequate size shall be supplied and mounted under the platform.

The box shall have a full face, bottom hinged door with a latch with integral lock. Any special tools needed for adjustments or disassembly of the various machine components shall be furnished in these boxes.

STROBE LIGHTS:

Two (2) amber LED strobe lights shall be mounted on the front of the truck.

Two (2) amber LED strobe lights shall be mounted on the side of the truck, one (1) each side.

Two (2) amber LED strobe lights shall be mounted on rear of the truck.

The control switch shall be a lighted rocker switch, located in the truck cab.

LIGHTBAR:

One (1) amber LED lightbar shall be mounted on top of the truck cab.

The control switch shall be a lighted rocker switch, located in the truck cab.

ARROWBOARD:

The striping unit shall have an arrow board, capable of flashing a directional arrow to either the left or right side, mounted on the rear area of the equipment platform.

The signboard shall have a minimum of 15 hooded, LED lamps, with a dimension of approximately 36 inches by 72 inches. It shall be 12-volt with solid-state circuitry and a minimum flash rate of 30 FPM.

The board shall be pivoted from a horizontal storage position to a vertical position for operation.

A 12-volt electric linear actuator shall be provided to raise and lower the signboard from the vertical to the horizontal position. The keypad type control shall be mounted on the operator’s control console.

TECHNICAL MANUALS:

The successful bidder shall supply two (2) sets of electronic versions (USB) operator's manuals, service manuals, parts books, wiring diagrams and applicable technical information for each machine purchased.

TECHNICAL SERVICES:

The services of at least one (1) competent technician, trained in the use and operation of the striping machine, shall be furnished for a period of two (2) consecutive days to be scheduled at the discretion of the Authority for each machine purchased. This service shall be provided to instruct the purchaser's personnel in the use, operation and maintenance of the machine on acceptance.

THE DEALER IS RESPONSIBLE FOR PROVIDING TITLE, COUNTY TAG AND

REGISTRATION. THIS SHALL INCLUDE THE TEMPORARY TAG, TWO WAY

OVERNIGHT SHIPPING OF ALL DOCUMENTATION AND ANY ASSOCIATED FEES

IN ACCORDANCE WITH HILLSBOROUGH COUNTY FLEET MANAGEMENT POLICY,

DEALER IS RESPONSIBLE FOR ARRANGING OFFLOAD CAPABILITIES FOR THEIR

VEHICLES OR EQUIPMENT BEING DELIVERED.

THE DEALER WILL PROVIDE HILLSBOROUGH COUNTY FLEET MANAGEMENT WITH

MINIMUM QUARTERLY UPDATES ON THE BUILD/ORDER STATUS OF THE

EQUIPMENT.

DEALER MUST NOT UTILIZE OEM WIRING FOR EQUIPMENT ADD‐ONS DEALER

MUST ABIDE BY GENERAL PRACTICES COVERED UNDER OEM.

4 Corner LED Requirements

4 Corner LED Lights / Formerly Called Strobes (VENDOR):

Install led directional light #BK7308093 (4 ea) - the color of all 4 LEDs shall be white.

One LED is to be installed in each corner of the unit’s front grille and rear bumper sections as shown using red circles in attached pictures.

All 4 bulbs shall be mounted and wired according to manufacturer’s guidelines and be controlled by one toggle switch #ECHRS1032 where LEDs can be activated/deactivated without ignition being on. Toggle switch shall be mounted in center bottom portion of dashboard to prevent accidental activation. All wiring shall be secured in a fashion that prevents chaffing, shorting of circuit, and becoming snagged on any debris while unit is in operation. The complete circuit shall be fuse protected using a #BK782-2023 fuse holder at the battery.