MITI MODELS DH40-4P/DH40-4PH DECON WASH HOOP (US Patent #5,205,306)
DESCRIPTION AND OPERATION
Contents
1.0 General 2.0 Specification 3.0 Description 4.0 Safety features 5.0 Special Precautions 6.0 Operating Procedures 7.0 Maintenance 8.0 Parts List 9.0 Warranty
1.0 General (back to top)
1.01 This practice covers the description and operation of MITI Manufacturing Company's Model DH40-4P/DH40-4PH DeCon Wash Hoops.
1.02 The system was created and is specifically designed to be highly portable and to set up quickly and simply to provide an economical and effective DeCon Wash in most land or shipboard applications. The system is designed to reduce and minimize the amount of over spray and waste water created by the DeCon wash.
2.0 Specifications (back to top)
2.01 Model DH4Q-4P	2.02 Model DH40-4PH
Outer Diameter - 45" (114.30cm) Inner Diameter - 39" (99.06cm) Extendable Handle Length 32"-53" (81-134cm) Weight with two handles 10 lbs. (4.55kg)	Hoop with inside handles Diameter - 45" (114.30cm) Inner Diameter - 32" (81.28 cm) Extendable Handle Length 32"-53" (81-134cm) Weight with two handles 14 lbs. (6.36kg)
2.03 Water Output DH40-4P/DH40-4PH
4.6 G.P.M. @ 30 PSI (.29 Liters/Sec @ 30 PSI) 4.8 G.P.M. @ 40 PSI (.30 Liters/Sec 0 40 PSI)
The above assembly provides a very effective DeCon wash while conserving water and reducing waste water which must be properly contained and disposed of. increase pressure for higher output if necessary. Use MITI's Model DP-6 Portable DeCon Pool with disposable liner or equivalent for waste water containment when using the DeCon Hoop Wash.
3.0 Description (back to top)
3.01 HOOP
Each assembly consists of a durable corrosion resistant tubular aluminum pipe which is circularly formed into a octagonal shaped hoop. This hoop is divided into four separate equal pieces which are connected together for use by Cam-Lock quick couplers located and attached to the ends of the tubular pipe hoop quarters. This design provides for easy storage handling and quick assembly. Design also provides for the inlet portion of the hoop's half section to be utilized in a half hoop configuration by simply capping off the hoop half ends with dust caps, which are provided with the hoop. This half hoop configuration is ideal for certain applications. The straight flat sections of the aluminum pipe located around the perimeter of the octagonal hoop allows the user in a self DeCon application to place one of the flat surfaces on the bottom of the containment pool while using the hoop to steady and balance themselves in order to effectively decontaminate their extremities.
3.02 SPRAY NOZZLE JETS
The aluminum pipe construction provides an excellent passage for water to flow to the eight threaded brass spray jets which are equally spaced around the inside perimeter of the octagonal hoop. These nozzles provide a uniform and consistent water spray during the DeCon process even at low pressures. The jet head is removable for maintenance and is attached to the nozzle body by means of a hex head threaded nylon nut with an inner o-ring seal. This configuration allows user to easily adjust or remove and clean a jet without requiring hand tools should it be necessary.
3.03 INLET
Features, one threaded water inlet with brass swivel fitting, ABS or polypropylene plastic on\off valve and brass inlet filter screen with rubber hose seal is attached to one hoop half. The valve will accept a standard 3/4 inch threaded male hose end. The l\4 turn on\off ball valve is easily controlled by the user in a one person DeCon. The filter screen restricts particles from entering the system that may clog the hoop outlet jets. The swivel aids in the connection of water supply hose.
3.04 HANDLE INLET (OPTIONAL)
An optional assembly is available which relocates the on\off valve from the hoop to the extension handle near the hand grip loop. This devise is used when control is desired at the handle and the extension arm handle is in the fully extended position. Constructed of threaded aluminum pipe with aluminum mounting for attachment to outer tube of the extension handle. A brass swivel and threaded male 3/4" hose fitting is attached to opposite ends of the threaded aluminum pipe. These swivel fittings allow relocation and attachment of the on\off valve normally located at the hoop and a short water supply hose line to the hoops swivel inlet from the threaded male fitting located adjacent to the relocated valve on the extension handle.
3.05 HANDLES
Two Tubular aluminum extendable handles are provided with each DeCon Hoop. Each handle extension tube is constructed of high tensile strength aluminum tubing for superior strength and light weight. Two plated lynch pins are attached to the handles extension tube, one for attachment to the hoop and the other for locking in place the extendable inner extension tube. A comfortable and large die formed enclosed looped handle is located at the outer end of the extension tube for the user to easily and comfortably hold onto. This handle design allows the extendable handle to be used easily when the DeCon personnel are fully suited up. Handle design also allows for replacement of the extension tube should the tube become damaged.
3.06 STORAGE BAG
A storage bag (MITI part number DHSB44) is available as optional equipment. This bag is constructed of a Durable sewn polyester reinforced fabric and features a convenient closure which simplifies use. Bag aids in protecting hoop and extension handles from debris and damage. It also keeps all hoop parts together for quick locating and convenient storage.
4.0 Safety Features (back to top)
4.01 Hoop design provides a safe and highly portable DeCon wash system which is quickly set up for use on site in emergency situation. Enables the DeCon Team to allow self DeCon where permissible reducing manpower. Also reduces over spray, water use and waste water which must be disposed of by proper means. Minimizing cleanup costs.
4.02 Construction of durable
corrosion resistant and highly inert aluminum. Light weight construction reduces user fatigue while reducing the chance of injury.
4.03 Coated with the latest state of the art environmentally safe powder coating. Baked on at 425 degrees. This coating is very inert to most agents and is very durable especially when applied to aluminum.
4.04 Ny-Glass Cam-Lock couplings are incorporated as they are inert to most agents, extremely durable and are quickly and dependably connected and in emergency situations.
4.05 Easily removable brass water jets, and bodies with nylon jet retaining nuts are used to provide and allow for quick replacement or disassembly for cleaning should they become clogged. Both materials are corrosion resistant and are inert to most agents.
4.06 Water inlet on\off valve is of ABS or polypropylene plastic which is inert to most agents. Valve provides for quick on\off control at hoop or at extension arm valve if optional extension arm valve assembly is used. Both valve configurations allow the system to remain charged for immediate use when required and puts on\off control in the hands of the user for maximum control and efficiency. Removable Protective screen filter, located at the valve assembly, prevents debris from clogging the water spray nozzles.
4.07 in emergency situations the half hoop configuration sets up quickly and allows hoop to be used in applications where a full hoop could not be used.
4.08 Extension handles allow DeCon personnel to distance themselves from the person or item being washed down. Optional extension handle on\off valve relocating assembly also allows personnel to keep their distance while maintaining on\off control.
5.0 Special Precautions (back to top)
5.01 Storage
Stow unit in an area where it will not be crushed or damaged by heavy objects. Stow in areas free of debris that may enter system clogging outlet jets. Stow assembly together if possible for quick location and use. Stowage bag available as optional equipment. Model DHSB44.
5.02 Preparing unit for storage When preparing Hoop for stowage after use uncouple hoop sections at quick couplers and allow water trapped inside hoop to drain out. This will prevent ice forming in cold weather. Remove extension handles from hoop if used. Reset extension handles to shortest position. Make sure all lynch pins are attached to extension handles and securely locked in place with looped wire bail. Store dust caps in the storage bag. Place entire assembly, disassembled, in stowage bag or into stowage area on service vehicle.
5.03 Freeze up prevention in cold weather applications be sure to let a small amount of water continue flowing through system after charging to prevent freeze up. Be sure to drain system supply lines and components after use to prevent freeze up.
6 . 0 Operating Procedures (back to top)
6.01 Locate and remove DeCon Hoop from storage area in service vehicle. Carry hoop to DeCon site. Remove components from storage bag if one is used.
6.02 Hoop Assembly If half hoop assembly is required, assemble half hoop configuration starting with inlet piece first. Then attache by means of the affixed cam-lock couplers the second piece of the hoop which completes the half hoop assembly . Attach the cam-lock dust caps, which are provided, on the ends of the half hoop assembly. If full hoop assembly is required remove dust caps and stow where they will be can be readily located. Assemble the four hoop halves by joining them together at cam-lock quick couplers located on each end of hoop pieces. Match up tape colors which is located at each end of the hoop pieces when assembling the hoop to insure that the hoop is properly assembled. You will note that the hoop halves are offset at the ends. This offset will allow the hoop to be fully joined in one position only, Again matching up tape colors will insure that the hoop is assembled properly. Be sure to fully engage and lock cams on cam-lock couplers.
6.03 Extension Handle Attachment Extension handles are not used when self DeCon's are performed. Use two extension handles for two man DeCon's and one extension for one to two man DeCon's (see brochure for drawings and photos) . One extension handle is used when handle is not required to be fully extended. Two extension handles should be used when handles are required to be fully extended. To attach simply remove lynch pin located at the outer end of the center extension tube of the extension handle. Insert the tube into the tube receiver located on the hoop half which has the water inlet fitting. This side should always be connected first in one or two extension handle configurations. Align pin holes, insert pin and lock in place. Repeat procedure for second extension handle if use is required.
6.04 Water Supply Line Connection from source. Remove on\off valve from swivel connector located on hoop half with water inlet. Caution, be sure not to loose the inlet filter screen. Attach on\off valve to supply hose. Set valve to OFF position, check to see that filter screen is in place, re-attach on\off valve to hoop water inlet swivel. The opposite end of the water supply hose should be attached to a valved water source. Multiple connections at source are provided with MITI ' s Multi Manifolds which feature 3-6, depending on model selected, 3\4" 500 PSI l\4 turn brass ball valves.
6.05 in the event the optional extension handle on\off valve relocation assembly has been attached and it is desirable to use the extension handle instead of a self DeCon configuration, first attach the extension handle with the relocation assembly to the hoop. Locate and connect the short hose supply line provided with the on\off valve relocation assembly to the swivel fitting located at the hoop inlet and the apposite end to the swivel fitting facing the hoop located on the extension handle valve relocation assembly. Connect the on\off valve to the supply line from source. Caution, be sure that the inlet filter screen is in place. Re-connect the on\off valve to the inlet swivel fitting located on the extension handle valve relocation assembly. Be sure to connect supply line to swivel fitting which is facing away from the hoop.
6.06 Waste Water Retention Pool A proper primary and secondary containment system, (pool) should be in place prior to use of the DeCon Hoop. MITI's Portable DeCon Pool Model DP-6 with Disposable Liner is designed to be used in conjunction with the DeCon Hoop System. Other approved pools may also be used.
6.07 Test Before Use After insuring that all connections are tight and hooked up to the proper source, turn on and charge the system at the water source valve. Re-check all supply hose fittings for leaks. Fix as necessary if leaks are found. Test hoop and purge air from the supply line and hoop by holding hoop over waste pool and turning on water at hoop on\off valve or at on\off valve relocated to extension handle if optional relocation assembly has be attached. All water jets should give an even spray and the pattern of the spray should be horizontal and in line with the hoop tubing. If a jet does not produce an even or consistent spray as the other jets, turn off water at hoop valve, loosen and remove nylon cap which contains clogged or damaged jet, clean jet if clogged, replace if damaged, re-attach to hoop, repeat test procedure. When re-attaching make note of the alignment of the other jets. Keep the jet tip's machined slotted opening in an even horizontal position with the hoop tubing. This will produce the proper spray pattern. Re-test, if ok leave system charged at pool for use. If not ok repeat procedure.
6.08 USING HOOP-SELF DECON
Pick up hoop which is charged and has been configured without the extension handles attached. Enter the DeCon Pool using the Hoop for balance and to steady yourself as you enter the pool. The hoop is strong so don't be afraid to lean on it if necessary during your self DeCon. CAUTION, due to the slippery conditions that will exist in and around the waste pool take caution when leaning on the hoop or using it to steady yourself as it could slip out from under you. If you are using the MITI DP-6 DeCon Pool, and should you slip and fall, you will fail on a fabric coated flexible spring coil that will soften your fall. Once you are in the pool and feel that you are in control and well balanced locate and turn on the wash at the on\off valve located on the hoop. Hold the hoop with both hands and lift it over your head slowly. Slowly lower the hoop over your head downward over your body. Remember the hoop sprays water on all sides of your body and it will be flowing down over your body as well, so don't get in a hurry. Take your time washing down your upper one third of your body. A gradual up and down action is best with a progressive slowly descending movement until the hoop is at your knees. Do not try to bend over and pass the hoop down too far as you may loose your balance and fall. After you reach your knees simply bring the hoop up over your body and head, position the hoop with one of it ' s flat surfaces on the pool bottom. While balancing yourself with the hoop lift one leg and slowly pass your foot and leg through the hoop. Repeat this procedure with the opposite foot and leg. Then kneel on one knee while still balancing yourself with the hoop and slowly pass one hand and arm through the hoop up to your shoulder. Again repeat this for the opposite hand, arm and shoulder. Repeat as necessary. After you are through shut off water to hoop at hoop valve. While still holding onto hoop for balance step out of pool.
6.09 USING HOOP WITH ONE HANDLE
This setup is for two man DeCon where one washes the other or for one man DeCon washing an appliance, barrel or other object. in case of personnel wash, assist person to be washed into pool. After you are sure he or she is well balanced and ready, pick up the charged hoop with one handle attached. Turn on spray at hoop or optional handle valve. Slowly lift up the hoop and pass it carefully over the head of the individual standing in the pool. When the hoop is centered and it will clear the individual on all sides slowly lower the hoop down first over the head, then to the shoulders, then back up the head, down to the chest, back up to the shoulders, down to th e waist back up to the chest, down to the knees, back up to the waist, down to the ankles, back up to the knees. Now reverse the process and come back up the body until you are over the head. It will also aid in the wash if the individual being washed will slightly move, rotate, flex or bend their extremities as the hoop passes by the various areas of their body during the wash. When finished remove hoop from over the individuals head turn off hoop water flow at valve and assist the individual out of the pool. Be sure to inspect individual before he or she leaves the pool to insure that a complete wash has been achieved if not repeat the procedure. Perform the same procedure for other non personnel washes.
6.10 USING HOOP - TWO HANDLES
The procedure is the same as the above except two individuals are opposite one another with each holding onto an extension handle which is attached to the hoop. This method should be practiced as coordination between the two individuals must be achieved to properly wash down a person or other.
6.11 USING HOOP WITH PATIENT ON BACKBOARD
Space two saw horses inside the DeCon wash pool at a distance that will enable the back board to be properly supported while the DeCon wash is being performed. Then place charged hoop, without extension handle down over one of the saw horses, preferably the one where the head of the injured person will be placed. Place injured person on backboard onto the saw horses. Be sure that backboard and patient are well balanced. Turn on the hoop at the on\off valve located on the hoop. Slowly bring the hoop up over the saw horse and over the injured person. Slowly pass the hoop over the injured person on the backboard using a slow back and forth movement as you progress down over the body. Come back up the body using the same back and forth motion. Repeat as often as required for a complete and thorough wash. The half hoop configuration may also be employed. When using the half hoop configuration EXTREME CAUTION MUST BE EMPLOYED so as to prevent the patient from laying in a pool of contaminated water as the hoop will only be washing the side of the patient and backboard that you use it on. Be sure to wash all sides of the patient and back board thoroughly. Always inspect to insure a proper wash has been achieved and that the patient is not laying in a pool of contaminated water. This inspection should always be performed with either method mentioned above. Never assume it's ok!
7.0 Maintenance (back to top)
7.01 After use always inspect hoop and extension handles for damage.
7.02 After use drain all water from hoop and components. Wash off any contaminant and dry off outside of hoop and extension handles with soft rag. Stow components in area where they will be located together and will not be crushed by other equipment.
7.03 Stow in dry compartment and in stowage bag (optional) .
7.04 Periodically check nozzle jets for leaks, clogs and alignment. Correct alignment, clean clogged nozzle body and jets or replace "0" ring seals if necessary. The jets, jet caps and jet bodies are very durable however occasionally they may be damaged if they are bumped against metal objects or other. Also inspect on\off valve and quick couplers. If damaged parts are found order replacement parts as required and install.
7.05 Extension handles Keep extension handles free of grit and grime that will interfere with the extending function of the extension tube. Occasionally remove and clean center extension tube. Polish with steel wool to make tube slide in and out easily when installed in the extension handle, also take care when stowing and handling so as not to bend or dent the extension tube or tube handle housing as they will not properly function and may become jammed.
8.0 See Parts List attached (back to top)
9.0 Warranty (back to top)
MITI Manufacturing Company, Inc. warrants it's Portable Hand Tool Products against defect in materials and workmanship for a period of 90 days. For service or parts information contact:
Manufactured by MITI MANUFACTURING CO , INC. 2996 Teller Court * Grand Junction , CO . 81504 USA* 970/243-9500 Fax: 970/243-9200 Website: www.mitico.com Email: services@mitico.com
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