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Safety precautions for setup, installation, and commissioning.
Safety instructions for operating the device daily.
Details how to assemble and mount the device.
Instructions for mounting the device onto a steam sterilizer.
Guidelines for connecting the device to the cold water supply.
Step-by-step guide on how to insert the resin cartridges.
How to connect to water inlet or steam sterilizers.
Specific connection method for steam sterilizers with fixed water.
Safety precautions for setup, installation, and commissioning.
Safety instructions for operating the device daily.
Details how to assemble and mount the device.
Instructions for mounting the device onto a steam sterilizer.
Guidelines for connecting the device to the cold water supply.
Step-by-step guide on how to insert the resin cartridges.
How to connect to water inlet or steam sterilizers.
Specific connection method for steam sterilizers with fixed water.
The MELAdem® 40 is an ion exchanger designed for the production of demineralized (deionized) water, primarily for use in medical settings such as clinics, medical and dental practices, and other healthcare facilities outside the patient environment. It is not classified as a medical device under European Regulation 2017/745. The unit operates on the ion exchange process, utilizing disposable filters filled with mixed-bed resin to reduce the salt content of tap water by approximately 95-99%. All operational processes are controlled by the water line pressure.
The core function of the MELAdem® 40 is to purify tap water to demineralized water quality. This is achieved through mixed-bed resin cartridges housed within filter containers. As tap water flows through these cartridges, ions are exchanged, effectively removing minerals and salts. The unit can be connected directly to a MELAG steam sterilizer for automatic water replenishment, ensuring a consistent supply of high-quality feed water for sterilization processes. Alternatively, it can be used as a standalone water treatment unit, allowing for the extraction of demineralized water, for example, with a MELAjet spray pistol for rinsing instruments after disinfection and cleaning. The maximum flow rate of the unit is 2 liters per minute, and this rate should not be exceeded to maintain optimal performance. The system is designed for continuous operation, with the mixed-bed resin cartridges being completely replaced when exhausted. The unit does not produce low-germ water, and if a low endotoxin content is required for reprocessing certain medical devices, an additional filter system is necessary.
The MELAdem® 40 offers flexible installation options, including wall mounting, placement in a floor unit, or direct mounting on a steam sterilizer. For wall mounting, specific fastening rails and screws are recommended, with attention to wall bearing capacity and drill hole spacing. When mounting on a steam sterilizer, the unit can be attached to existing mounts on the device cover (under cover caps) or to mounts that are first secured into rectangular recesses on the sterilizer's side walls.
Connecting the device involves careful attention to the cold water supply. MELAG recommends a direct connection to drinking water, cautioning against connecting to water purification systems or filters that use oxidants, as these can impair the mixed-bed resin's performance. The water inlet tap should be fitted with a backflow preventer and a pipe aerator to prevent contamination of the municipal water system. The unit's inlet and outlet hoses are pre-connected PUR hoses, which can be shortened or replaced as needed using a hose cutter or sharp knife and specific quick couplings.
Before commissioning, the mixed-bed resin cartridges must be inserted into their filter containers. This involves using a container key to open and close the containers, ensuring the cartridges are inserted upright. Once connected and cartridges are in place, the water inlet tap is opened, and all hoses and connections are checked for leaks. After approximately 5 minutes, the device is ready to supply demineralized water. An empty sterilization cycle with the connected steam sterilizer is recommended as a final step in commissioning.
Regular maintenance is crucial for the MELAdem® 40's longevity and performance. Daily checks include controlling the permeate with a conductivity meter or using the steam sterilizer's inbuilt conductivity measurement to monitor water quality. Every six months, the hoses and screw connections should be inspected for leaks, swelling, crushing, kinks, or age-related brittleness. All hoses on the water treatment unit and the MELAjet spray pistol (if present) should be replaced every six years.
The mixed-bed resin cartridges require replacement when conductivity indicates poor performance or when their expiry date is reached. When connected to a MELAG steam sterilizer, a message on the sterilizer's display will signal the need for cartridge replacement. The replacement process involves closing the water inlet tap, releasing pressure (either via the MELAjet spray pistol or by running a short Universal-Program on the sterilizer), opening the filter container with the container key, removing the old cartridge, cleaning and greasing the sealing ring, rinsing the filter container, inserting a new cartridge, and re-securing the container. After replacement, the water inlet tap is reopened, and all connections are checked for leaks.
During longer operating pauses (e.g., overnight, weekends, holidays), the water tap or central water shut-off should be closed. If operating breaks extend to four weeks or longer, the mixed-bed resin cartridges should be replaced before restarting the device to ensure optimal performance. MELAG emphasizes the use of original MELAG accessories and spare parts for all maintenance and operation.
General| Device Type | Water Filtration System |
|---|---|
| Model | MELAdem 40 |
| Filtration Method | Reverse Osmosis |
| Material | Stainless steel and plastic |
| Capacity | 40 liters/hour |
| Power Supply | 230 V / 50 Hz |
| Water Tank Capacity | Not applicable |
