dosaJet propotional injector

The DosaJet is powered by water flow, with minimal loss of pressure. The water engine powers the proportioning unit.

Max. Working Pressure: 8 Bar

User Manual  The DosaJet is powered by water flow, with minimal loss of pressure. The water engine powers the proportioning unit. No external power is required. The proportioning unit injectors liquid additives in direct relation to the amount of water that passes through the motor and injects the additives into the water system.

The water engine action:  The suction and proportioning unit is built from a piston connected to the water engine, from which it derives its movement. The piston moves within a cylinder with a non-return valve. The movement of the piston within the cylinder causes the water to be injectored and the required liquid additive to be drawn through a pipe inserted into a container. It is possible to regulate the supply ratio between the additive and the water passing through the  injector  in model2504.The drawn additive is transferred through a inlet bypass directly into the main water line, without contact with the water engine.

Technical DataDosaJet operates in the following conditions:   From a minimum flow rate of 20 L/H (5.3 Gal/H) and up to 2,500 L/H (660 Gal/H)   Temperature not lower than 4°C (39°F) and not higher than 40°C (104°F)   Water pressure between 0.2 Bar to 8 Bar (2.9 to 120 PSI)   The additive may be added to the water flow according to the required dosing percentage:0.4% to 4% in models:  2504   Water pressure loss:Pressure loss in the lower flow rates 0.1 Bar and in the higher flow rates up to 1 Bar.Models with 0.4%-4%: from 0.2 Bar up to 1.2 Bar in proportion to the water flowThe DosaJet inlet and outlet are ¾" BSPT male thread.The additive tank should be placed beneath the DosaJet.  Mounting the DosaJet1. Prepare the DosaJet site. The DosaJet intake and outlet must reach the intake and outlet pipes. The DosaJet must be positioned above the liquid additives container.2. Screw the DosaJet bracket onto a wall or any stable vertical base.3. Press the DosaJet onto the bracket.    The nipples on the DosaJet must click into the holes in the side of bracket.

Installation of the DosaJet Installing the DosaJet on a Direct Line (in line)1. Install onto the water line using swivel connectors and ensure that the water flows into the DosaJet in the direction indicated by the arrows printed on the DosaJet.2. Install a 50-75 mesh (250-300 micron) filter between the valve and the injector intake.3. Valves have to be installed at the water line entry and exit; in order to stop the pump's action – you should close

 the Valve at the entry point.4. Position the drawing pipe into the additive container. Ensure that the suction pipe filter is set several millimeters above the container’s bottom. Check to ensure that the suction pipe is not bent or folded.Installing the DosaJet on a Bypass line (off line) Where water is supplied at a higher flow rate, than the working flow rate of the injector or where the injector isn’t needed for continuous operation, the DosaJet must be installed on bypass line. The bypass provides the possibility to close the operation of the injector while water continues to flow through the line.1. Install onto the water line using swivel connectors and ensure that the water flows into the DosaJet in the direction indicated by the arrows printed on the DosaJet.2. Install a 50-75 mesh (250-300 micron) filter between the valve and the injector intake.3. Valves have to be installed at the bypass entry and exit and on the main water line.4. Position the liquid additive container beneath the injector. Check to ensure that the suction pipe is not bent or folded. Position the drawing pipe into the additive container. Ensure that the suction pipe filter is set several millimeters above the container’s bottom.

Adjusting the DosaJetEvery stroke of the DosaJet moves a predetermined volume of water with a predetermined volume of liquid additive.  To adjust the volume of the liquid additive in models 2504 :1. Remove the upper U–latch from the Proportioning Lock Nut.2. Preset the amount of additives according to the Percentage to Water Scale that is found on the proportioner.• Turn the proportioning Adjuster counter clock-wise to increase the amount of additives.• Turn the Proportioning Adjuster clock-wise to decrease the amount of additives.The marking on the scale indicates the % of additive out of the total water flowing through the injector.3. Turn the proportioning Adjuster slightly, until the U-latch holes of the Proportioning Lock Nut align with the notches in the proportioner.4. Push the U-latch into the U-latch holes of Proportioning Lock Nut until it is firmly in place.

Rinsing and Cleaning the unitAfter pumping• Rinse the unit by pumping clean water from the additives container.• Wash the external surface of the unit with clean water.

Air-release ValveIn models: 2504After initial operation of the DosaJet, apply pressure to the cap (the air release valve) for several seconds to open valve that allows trapped air to escape. This air release is accompanied by a slight loss of water. Release the pressure on the cap to close the valve.

dosaJet propotional injector