The Meritech CleanTech® 500EZ is an automated hand and glove cleansing system designed to provide a no-touch, completely automatic hand wash. It is a turnkey system that aims to meet or exceed hand washing requirements for compliance, standardization, and effectiveness in various facilities. The system connects to standard hot and cold-water lines and a drain, making it suitable for integration into existing infrastructure.
Function Description:
The CleanTech® 500EZ system delivers handwashing solution and water in a stimulating spray to the hands or gloves, from fingertips to wrist. It utilizes Ultrapure hygiene solution and water to remove 99.9% and greater pathogens, as well as particles, sodium, and other contaminants. The standard system configuration involves a 12-second wash cycle using hand washing solution for cleaning and sanitizing, followed by a potable water rinse cycle. A helical configuration of jet nozzles within two rotating cylinders sprays the mixture of solutions and pressurized water onto the hands, followed by the rinse.
To minimize cross-contamination, an infrared photo optical sensor positioned directly above the cylinders automatically detects the presence of hands when they enter the cylinders, initiating a wash cycle without requiring any physical touch. One complete hand wash cycle automatically dispenses the appropriate volume of hygiene solution followed by a potable water rinse. The minimum time interval between user cycles is approximately 2 seconds. An optional air curtain can be installed to blow compressed air onto the hands at the end of the cycle, turning on as long as the photoeye is blocked. This can quickly knock off most water drops in about 3 seconds or completely dry hands in approximately 35 seconds.
Important Technical Specifications:
- Features: Wall mount, 304 SST construction, NEMA 4X electronics enclosure. Designed for high-use areas (4-5 people per minute). CIP model. Washes up to Mid-Forearm. Optional Integrated Air Curtain Dryer (500EZ-A).
- Dimensions: 18 1/8" width x 19 5/8" depth x 28 ¼" height (46 cm width x 50 cm depth x 73 cm height).
- Weight: 76 lbs. (34.5 Kg) – varies with options.
- Shipping Weight: 93 lbs. (42.2 Kg) – varies with options.
- Cycle Activation: Handwash - Automatic via infrared photo optical sensor. Master & optional resettable compliance monitor.
- Electrical: 100 - 240 VAC 50/60 Hz, 160 Watts – Intl. plugs available.
- Solutions Level: Solutions level LED light bar indicator / "ULTRAPURE SOL. EMPTY" display notification.
- Water Consumption: 0.6 gallon (2.3L) per handwash cycle.
- Plumbing: 2 - ¾" male garden hose fitting, hot & cold minimum 4 (15 LPM) GPM flow. Water pressure: 40-100 PSI (2.8 - 6.9 Bar), 50 PSI (3.6 Bar) optimum. Standard 1 1/2" (40 mm) drain stub, P-Trap to be supplied by facility. Ideal wall drain height from floor is 18" (45.7 cm).
- Compressed Air (for Optional Integrated Air Curtain Dryer): 3/8" (9.5 mm) inside diameter supply line recommended., 19 CFM at 25-30 PSI (1.7 - 2.0 Bar) for optimal performance. Not to exceed 50 PSI (3.6 Bar). Pressure regulator not supplied; must be installed external to station.
- Protective Modes: Solutions level indication, solutions empty notification, current limited motor.
- Solutions Storage: 1-2½ (10L) gallon container hand hygiene solution.
- Hand Solution: Required solutions provided by Meritech. Solutions provided or approved by Meritech (Other solutions may void warranty).
- Patents: Protected by various U.S. Patents including 5,265,628; 5,823,447; 7,607,442; 7,607,443; 7,617,830; 7,641,740; 7,659,824; 7,682,464; 7,698,770; 7,754,021; 7,754,022; 7,757,700; 7,758,701; and other patents pending.
Usage Features:
- Installation: The system is wall-mounted. Recommended height is 44" from the finished floor to the top of the wall mount bracket, with a minimum of 26" above the wall drain. It requires a grounded 120V electrical outlet, standard 3/4 inch "garden hose" style fittings for hot and cold-water lines (flexible hoses supplied with the system are to be used, not hard piping), and a standard 1 1/2" drain line. The wall mount bracket requires 6 fasteners capable of supporting a 200-pound vertical force each.
- Operation: To initiate a cycle, users stand directly in front of the system and place hands simultaneously into the center of each cylinder. The hygiene cycle starts automatically. Hands should be positioned at a depth where the outermost ring of the water spray covers the wrist. A countdown timer from 12 to 0 indicates "WASHING" and then "RINSING." The system is ready for the next cycle once hands are removed, allowing the infrared photo optical sensor to reset.
- Water and Temperature Controls: The blending valve is factory-calibrated to a pre-set temperature (usually between 100° - 107° Fahrenheit). Temperature can be dependent on hot and cold-water inlet temperatures and pressures. The system does not produce hot water; facility hot water should be 135°F or greater to achieve the recommended 105°F hand wash temperature. Booster heaters may be necessary in cold environments. The system is not compatible with instantaneous or tank-less water heaters. Shut-off valves for hot and cold water should be located near the system. Water pressure, splash, and flow can be adjusted by partially closing the facility hot/cold water valves equally.
- Cylinder Rotation: The wash cylinders are made of durable plastic and are designed to stop spinning if light pressure is applied to their walls, restarting once the impediment is removed, ensuring safe operation. Debris falling into the cylinders will be trapped at the bottom and can be removed; smaller pieces will pass through to the drain.
- Solution Delivery: Approximately 5 – 7ml of hygiene solution is injected per wash cycle. The system continuously monitors solution delivery and signals improper delivery on the front panel monitor. Users should visually examine containers and clear delivery lines for fluid presence and blockages.
- Solution Replacement: Solution containers are 2 ½ gallon (10L) size. To replace, loosen the cap, remove the tube assembly from the empty container, and discard the empty container according to local regulations. For a new container, unscrew the protective cap, place the new container in the system, install the pickup tube assembly from the system into the new container, and tighten the cap. After installing, run 5 handwashes to re-prime the solution line. The display will show "ULTRAPURE SOL. EMPTY" and the light bar will flash when the container is empty.
- Troubleshooting: If the system does not start when hands are inserted, it may be because a new cycle was requested before the previous one completed. To reset, remove hands, wait 3 seconds, and reinsert.
- Infrequent Use: For extended periods of non-use (a month or longer), it is recommended to remove the solution container, place the pick-up tube into a container of hot water, and run several hand wash cycles to flush the lines of solutions, which can thicken and clog the system. After flushing, close facility water shut-off valves and unplug the system.
Maintenance Features:
- Weekly:
- Pour, rub, or spray bleach, ammonium chloride, hydrogen peroxide, or other hard surface disinfectant into each cylinder to kill bacteria in the system or facility drain.
- Clean front surfaces and cylinders with a cleaning agent that removes mineral deposits.
- Quarterly:
- Clean photo optical sensor lenses with water and a clean soft cloth.
- Flush soap lines: Remove the solution bottle, fill a container with hot water, place the system solution pickup tube in the hot water, run 20-30 hand wash cycles to flush hot water through soap lines, let soak for 15 minutes. Remove the pickup tube from the hot water and run 10 handwashes to empty the water from the line. Reinstall the pickup tube into the solution container and run 5 handwashes to re-prime the station.
- Biannually:
- Unplug the system and close facility water shut-off valves.
- Remove hose fittings from hot and cold-water inlets.
- Remove water filter screens, rinse clean with tap water, and reinstall water filter screens and hot and cold inlet lines.
- Turn facility water shut-off valves on, plug the system in, and check for leaks.
- As Needed:
- Replace cylinders every 30,000 – 50,000 hand wash cycles or when mineral deposits buildup or water splash out becomes excessive. This should be done by a Meritech technician.
- Taring System: On occasion, it may be necessary to re-tare the solutions scale. To do this, remove the solutions container from the system, verify nothing is on the weigh plate, press the tare button (system will display "taring" for 2 seconds), and then re-install the solutions container and verify the solutions light bar is reading correctly.
- Adjustments: All adjustments should be made by a Meritech technician.
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