- a. Automatic Controls: Vehicle actuated switch gear including prewired electric control panel and manual override controls.
- b. Tire Guides: Full length, one pair.
- c. Skid Plates: One pair.
- d. Prewetting/Detergent Spray Arch Assembly: Automatic, frame mounted, free standing unit.
- e. Oscillating Mop: Full width with integral detergent spray assembly.
- f. Vertical Brushes: Four rotary brushes with integral detergent spray and supporting frame assembly.
- g. Rinse Spray Arch: Automatic frame mounted, free standing, fresh water unit.
- h. Air System: Automatic with air control panel.
- i. Washer Equipment Miscellaneous: Brush yokes, columns, base plates, anchor bolts, pump and detergent distribution system.
1) Maximum Vehicle Dimensions:
2) Nominal Overall Dimensions Installed:
1) Tire Guides: Fabricated from minimum 4" diameter tubular steel pipe sections supported at maximum 3'-3" intervals, providing guide runs on both sides of vehicle; installed full length of vehicle wash lane with angled entry sections. Guide spacing shall accommodate vehicles up to and including 102" in width. Bracket supporting pipe sections shall be cinch anchored with 3/4" by 5-1/2" Rawl-Studs. Guides to have a height of 9" except under brush yokes which shall be 5". Ends of rails shall be capped and all sections shall be smoothly finished to prevent tire damage.
2) Skid Plates: Provide flat, polished 3/16" thick stainless steel skid plates mounted flush to slab. Angled entry section of tire guide shall minimize tire sidewall damage caused by resistance to lateral movement resulting from misaligned entry to vehicle washer. Plates shall be nominally 3'-0" wide tapering with tire guide angle to 2'-0" wide at entrance to straight section of tire guides.
3) Prewetting/Detergent Arch: Position of arch shall be such as to provide optimum detergent penetration before brush wash cycle. Side nozzle pipe assemblies of arch shall be canted away from approaching bus to provide sequential application of detergent starting at bottom and progressing to top of bus. Furnish complete with separate actuating wand, control, metering valve, pump, storage/mixing tank, incidentals, and hardware necessary for working installation.
4) Oscillating Mop Assembly:
c. Roof Mop Drive: Roof mop drive shall be 2 horsepower, totally enclosed fan cooled, NEMA design "B", electric motor bolted to a 5MCT right angle gear reducer. Counter oscillation to roof mop frame shall be by an eccentric linkage of a rod end bearing connected with a 3/4" diameter CRS round drive arm.
d. Roof Mop Sprays: Provide (2) 1" galvanized schedule 40 pipes as mop sprays. Spray pipes to have (10) brass spray nozzles each
flushing mops with 20 gallons per minute at 100 PSIG of water/detergent solution.
5) Vertical Brush and Frame Assembly:
a. Main Support Columns: Provide (4) main support columns; (2) per side, (1) for each brush. Columns shall be minimum 10"x10"x1/4"
hollow structural steel tubing welded to 36"x36"x3/4" base plates, each with not less than (3) welded 3/8" thick steel plate gussets. Welds of
frame assembly and following equipment shall be continuous; spot and tack welds are not acceptable. Secure each base plate with not fewer
than (4) 1-1/4" x 9" Rawl-Stud cinch anchors. Main support columns shall be braced overhead, crosswise and lengthwise in relation to the
flow of traffic.
Cross brace columns with 4"x4"x1/4" hollow structural steel tubing bolted at each end. (2) Pivot bearing plates for each columns; (1) top and
(1) bottom, shall also be provided. Top bearing plate shall be welded to the main support column and shall have (2) 3/8" minimum steel plate
gussets. Lower bearing plate shall also be welded to the main support column and shall have the same gussets welded between the bearing
plate and the column base plate.
b. Front and Rear Brush Yoke Assemblies: The brush yoke arm shall be curved to allow clearance for the extreme corners of the bus during
the washing motion. All structural members shall be designed and sized to withstand stresses encountered without deformation. Maximum
allowable frame distortion shall be .002 times the span. The top and bottom brush yoke arms shall be 4"x3"x1/4" structural tubing. Yoke
arms to be of one piece construction, cold formed with 12" radius bends to allow vehicle clearance. Brush yokes with mitered and welded
joints are not acceptable. Pivot tube of brush yoke assembly shall run the full length of the brush and be fabricated from 4"x8"x1/4" structural
tubing with machine stub shafts welded at each end to accept a 1-3/4" 4-bolt flange bearing. Brush shafts must be secured at both top and
bottom of brush yoke. All brush shaft and brush yoke bearings shall be protected from moisture and have grease fittings remotely located
4'-0" above the floor. Two additional supports to yoke arms shall be fabricated from 3"x3"x1/4" structural tubing.
c. Brush Arm Movement: Movement of brush arm shall be by air cylinders, minimum 4" bore with hardened chrome plated shafts and bores.
Each cylinder shall be amply lubricated. Air hoses to cylinders shall be minimum 3/8", two-ply, rayon braid type with a minimum working
pressure of 200 PSIG and a minimum burst rating of 500 PSIG, each hose equipped with brass male and female swivel threaded
connectors. Cylinders shall be mounted by trunnion bearings with grease fittings. Cylinders shall have air cushion stops on the extreme in and
out positions. Valving shall be provided for individual cylinder regulation including retraction out of the vehicle path for maintenance. All brush
yokes shall retract when power is off, permitting unobstructed vehicle passage through wash lane.
d. Rotary Brushes: Washing of bus vertical surfaces shall be by (4) electric motor driven vertical brushes which shall automatically adapt to
vehicles and side mirrors. Front/side brushes shall counter-rotate to side/rear brushes for optimum cleaning around protrusions.
1. Motor, Drive and Coupling: Motors shall be 5 horsepower minimum, totally enclosed fan cooled, flanged to an 18:1 worm gear drive unit
with the output shaft flexibly coupled with tapered bushings to the brush shaft, permitting brush shaft to be removed without disturbing gear
motor assembly. Unit shall be designed for service in a moisture intensive environment. Brush speed shall be 96 RPM.
2. Brush Shaft and Bearings: Brush shaft shall be cold rolled minimum 2-1/4" diameter steel tube mounted in minimum 1-3/4" flange bearings,
protected from moisture with grease fittings remotely located 4'-0" above the floor on the main support columns. Each brush shaft shall be
equipped with a bearing guard and anti-wrap disc located above the bottom flange bearing. Bearing guard to be fabricated from 1/8" steel
plate and attached to brush shaft by means of (1) 2-1/4" locking collar. An 18" diameter anti-wrap disc shall be positioned and attached to
brush shaft just above the bearing guard.
3. Brushes: Each brush shall be made up of 18" long sections of 60" diameter brush material firmly held in split aluminum cores. The brush
section shall be mounted to the brush shaft by means of aluminum bolting collars. The brush fill shall be 20 strips of .044 (IBC) flagged
circuleen material locked into steel backed brush strips which are locked into the brush cores. The bottom (3) brush sections shall be of a full
loop, extra-heavy density packed construction, 110 to 120 filaments per inch. The top (3) brush sections shall be full loop light density 50 to
60 filaments per inch. Brush filaments shall be Industrial Brush Corporation (IBC) "Circuleen".
e. Brush Wetting Assembly: Each brush yoke shall be provided with a 3/4" galvanized steel spray bar fitted with a minimum of (9) brass
spray nozzles to flush brush continuously during operation with detergent water solution at a minimum nominal rate of 25 gallons per minute.
f. Brush Operation Controls: Furnish complete with actuating wands, control metering valves, incidentals and hardware necessary for
working operation separately or integrated with overall wash cycle controls.
6) Final Rinse Arch:
a. Piping and Nozzles: Piping shall be schedule 40 galvanized 1-1/2" minimum steel pipe with side pipes of arch canted toward approaching
vehicle to provide sequential rinsing starting at top and progressing to bottom of vehicle. Provide a minimum of (22) brass spray nozzles
threaded into the rinse arch pipe arranged to provide full rinsing coverage with fresh water over entire vehicle. Output capability of rinse arch
shall be at least 100 gallons per minute of fresh water. Provide 3/8" ball valve for adjustment of arch output.
b. Support Structure: Piping shall be supported by a frame constructed of 2"x2"x3/16" structural tubing welded to minimum 15"x15"x3/8"
steel base plates, each bolted to slab with not fewer than (4) anchor bolts no less than 5/8" diameter and 5-1/2" long. Reinforce frame with
(3) gussets, minimum 3/8" thickness, welded to each base plate.
1) Control Wands: Start/stop functions of each washer function shall be by overhead, vinyl covered, fiberglass wand limit switches. Switches
shall be easily adjusted and housed in water-tight enclosures. Switch circuits shall be programmed to prevent temporary system reactivation
by pendulation.
2) Air Control: Each air cylinder shall have its own air control for adjustment of air. The air control shall consist of a 3/8" ball valve,
combination filter, regulator, lubricator and air valve, all factory pre-assembled and mounted inside a NEMA #12 fiberglass enclosure. Both
filter and lubricator sight bowls shall protrude through the bottom of the air control enclosure for maintenance inspection. The air control
panel shall be mounted to the main column assembly within easy reach of maintenance personnel. All air control components shall be 3/8"
pipe size, 200 PSIG working pressure. All air hoses shall be rated to a 500 PSIG minimum burst and shall be of a two braid type with swivel
fitting one end. Fittings for air equipment shall be 150 pound galvanized malleable iron. All air controls shall include the following:
a. 3/8" Ball valve, bronze bodied, rated for 300 PSIG installed ahead of air equipment.
b. Combination Filter/Regulator: Fully adjustable with locking set, 0-160 PSIG liquid filled gauge monitored, removable visual polycarbonate
sight bowl, push-n-drain water blow off.
c. Lubricator: Fully adjustable, needle valve operated, produce oil particles of 2 microns or smaller, removable visual polycarbonate sight
bowl, 360ü visual sight dome, pet cock type oil drain.
d. Air Control Valve: 4-Way, inline mounted, 2-position, 5-ported, single solenoid pilot operator maintained contact, air and spring return,
recessed non-locking manual override, capable of being serviced without disturbing piping or wiring.
e. Air Speed Control: Inline mounted, two per cylinder, fully adjustable with locking nut, screen baffled mufflers.
3) Solenoid Valve: Fresh water solenoid valves shall be slow closing type to prevent hammering and stress on water lines. all water solenoid
valves shall be union isolated.
4) Wash Water and Detergent Pumping Assembly: Shall be completely self-contained unit consisting of a 500 gallon stainless steel tank to
retain wash water for the prewet arch, mop, and brush spray assemblies. Water inlet to be float switch controlled. A 200 gallon per minute
at 100 PSI, 25 horsepower wash water pump shall direct detergent laden water to prewet arch, mop and brush flushing sprays. Detergent to
be delivered to suction side of wash water pump via an adjustable metering pump. Detergent metering pump shall be bronze rotary gear type
with a minimum 1/3 horsepower drive. Pump capacity shall be 2 gallons per minute at 30 PSI and shall be designed to meter detergent from
the blend tank into the wash pump suction line at a ratio of as low as 100:1. The flow to be controlled through a calibrated metering valve.
Pump shall be equipped with internal adjustable relief, pressure gauge, check valve and suction hose. A detergent blend system shall be
provided and consist of a 10 gallon tank fabricated as part of the pump and tank stand. Such tank to be equipped with a metering device
which shall automatically fill the reservoir with an adjustable ratio of water to liquid chemical concentrate. This blending shall be accomplished
by a proportioning unit consisting of a magnetic operator, float valve, and Venturi mixing unit. Metering pump and blend system shall be
capable of proportioning liquid detergent from a mix ratio of 400 to 1000 to 1.
5) Entrance Lights: The entrance light unit shall be mounted at the entrance of each washer. This unit shall consist of a duplex traffic signal
light with (1) red lens and (1) green lens. Actuation of the red light will indicate that the rear brushes are in the wash cycle and no vehicles are
to enter. The green light when actuated, will indicate that the rear brushes have retracted and are ready for the next bus to enter.
6) Speed Warning: Speed of vehicle shall be monitored while vehicle is in washer. Triple indicator light shall be mounted visible to driver,
interconnected to control circuits to display green light when speed is acceptable, amber light when speed is approaching limit, and red light
when speed is excessive. Audible alarm shall also indicate excess of speed. Vehicle wash shall deactivate if vehicle speed becomes
excessive. If system shut down occurs, rinse arch shall stay on with a preset time delay. Speed limit controls shall be adjustable in a lockable
control box.
1) Wash System - Automatic: Sequential starting and stopping of vehicle washer and interfacing controls shall be completely automatic, not requiring services of attendant other than for routine servicing, inspection and maintenance.
2) Manual Controls: A manual capability shall be provided to override automatic controls in the event of malfunctions or failure of system, or to permit passage of bus through wash lane without being washed.
3) Electrical Control Panel: Control panel shall be housed in a NEMA #12 enclosure. A through the door mainline non-fused disconnect shall be located for shutdown of electrical functions. The control panel shall be supplied with individual starters and circuit breakers (no fuses) for all system motors. A machine tool transformer shall provide power reduction to 110 volt control circuit. The control panel wiring shall be color coded and numbered for easy identification. The control panel shall be completely prewired, and internal wiring shall be terminated at numbered terminal strips. A programmable controller shall be used for all relay and timing control functions. Electro-mechanical relays are not acceptable. Programmable controller shall be pre-programmed in standard ladder logic. Its features shall include diagnostic capability, expandability to 112 inputs or outputs, 700 words of memory - expandable to 1700 words of memory (CMOS, RAM or Prom), modular plug-in construction, snap on/handheld programming panel capable of monitoring logic, timer, counter values, and input and output points - LED lights indicating input and output function. Selector switches shall be provided for various operational modes of wash system as well as power on and emergency off switches mounted through the enclosure door.
Mode Selections Shall Be:
Wash - Sides Only
Wash - Sides / Front
Wash - Sides / Front / Rear
Prewet - Manual / Off / Auto
Rinse - Manual / Off / Auto
Detergent - Manual / Off / Auto
All fabricated sections of washer frame, brush yokes and arms, roof mop frame, spray arch frames and miscellaneous structure shall be hot-dipped galvanized after fabrication per ASTM A123 or A385. Metallic surfaces not suitable for galvanizing shall be coated with 95% zinc primer and covered with durable machine enamel. All erection bolts shall be plated Grade 5.
G. Drawings, Operation and Maintenance Manuals, Service Requirement
1) Complete piping, wiring, assembly and foundation drawings shall be supplied by the wash system manufacturer. Such information to include 3-sets of Operating and Maintenance Manuals.
2) Upon completion of equipment installation, a qualified representative of the manufacturer shall be present to check-out the equipment, place it into initial operation, and instruct owners' personnel in the operation and proper care of the equipment.
3) Service Requirements:
Water - 3" Supply Line at 40 PSIG Minimum
Air - 1/2" Supply Line at 80 PSIG Minimum
Power - 208/230/460/480 Volt, 3 Phase, 60 Hertz
Peak Load - 48 HP with 500 Volt AMP Control Circuit
Drain - 6" Minimum
The wash equipment shall be warranted against defective parts and faulty workmanship for a period of twelve months from the date of
start-up. This warranty shall consist of the replacement and installation of defective assemblies or parts without cost to the owner for a period
of 90 days. From 91 days to 365 days after start-up, the warranty shall consist of replacement of parts only at no cost to the owner. This
warranty shall not cover malfunctions of valves due to foreign objects in the supply lines, malfunctions due to freezing, malfunctions due to
maladjustments of controls because of tampering by unauthorized personnel, or malfunctions due to misuse or abuse of the equipment.
