DOSATRON D40MZ5 (01) PDF Document

When connecting the DOSATRON D40MZ5 to a water supply line, ensure that the water flows in the direction of the arrows shown on the appliance. It is recommended to install a disconnector to prevent contamination of the water supply. If there is a risk of water and concentrate flowing backwards, it is recommended to install a non-return valve downstream. For installations where there is a risk of siphoning, an anti-siphoning valve should be placed downstream. Do not install the unit above a container of acid or aggressive product, and ensure it is stored away from excessive heat and frost. The unit must not be installed on a water pump suction circuit. It is the user’s responsibility to replace the dosing part seals annually.

When installing, operating, and maintaining the DOSATRON D40MZ5, always prioritize safety instructions. Use suitable tools, protective clothing, and safety glasses. Take safety measures appropriate to the nature of the suctioned liquid and the water temperature. Exercise extreme care when handling hazardous substances such as corrosives, toxic substances, solvents, acids, caustics, and flammable substances.

If the water source has a high abrasive particle content that could cause premature wear of the DOSATRON D40MZ5, it is essential to install an upstream filter, such as a 120 mesh (130 microns) or finer filter.

The DOSATRON D40MZ5 has the following technical characteristics:

Operating flow: 2.2 to 40 US gpm (500 l/h min to 9 m3/h max).

Max. operating temperature: 104 degrees Fahrenheit (40 degrees Celsius).

Operating pressure: 7.25 to 116 psi (0.5 to 8 bars).

Dosing adjustable: 1/100 to 1/20 (1 to 5%).

Concentrated product injection flow: 2.82 to 253.62 US Fl. oz/min (5 to 450 l/h).

Connections: 1 1/2 inch (diameter 40×49 mm).

Follow these steps to prime the DOSATRON D40MZ5:

Step 1. Partially open the water inlet.

Step 2. Press the bleed button on the top cap until a constant flow of water is seen coming from around the button (no air “spitting”), then release it.

Step 3. Slowly open the By-pass valves and close the main valve.

Step 4. Slowly open the fast priming valve located downstream of the DOSATRON D40MZ5.

Step 5. Operate the unit until the product to be dosed rises into the dosing part (the product is visible through the plastic hose), then close the fast priming valve.

Adjustment must be performed while the unit is unpressurized:

Step 1. Turn off the water inlet and allow the pressure to drop to zero.

Step 2. Unscrew the dosing locking nut.

Step 3. Screw or unscrew the dosing adjustment sleeve so that the two display eyelet dots are facing the desired dosing marker.

Step 4. Manually retighten the dosing locking nut.

Before dismantling, operate the DOSATRON D40MZ5 by aspirating clear water to rinse the hose and the dosing part.

Step 1. Unscrew the nut at the bottom of the dosing part.

Step 2. Pull downwards to remove the hose from the suction valve head.

Step 1. Turn off the water inlet and allow the pressure to drop to zero.

Step 2. Remove the suction hose.

Step 3. Unscrew the suction valve locking nut.

Step 4. Release the suction valve by pulling it into the axis of the dosing part.

Step 5. Thoroughly rinse the various parts of the valve using clear water.

Step 6. Refit the components in the correct order and position as shown in the product manual.

Possible causes and solutions for the DOSATRON D40MZ5 not starting or stopping:

If the motor piston is blocked, restart it by hand.

If there is air in the unit, bleed it by purging.

If there is an overflow, reduce flow and restart, or check the motor valve seals.

If the motor piston is broken, the unit must be returned to your distributor.

Check the following for the DOSATRON D40MZ5:

If the motor piston has stopped working, follow the troubleshooting steps for the motor piston.

If there is an air tightness problem in the suction hose, check the hose and the tightening of its nuts.

If the suction hose is obstructed or the strainer is blocked, clean or replace them.

If the suction valve seal is worn, wrongly fitted, or clogged, clean or replace it.

If the plunger seal is wrongly fitted, clogged, or swollen, clean or replace it.

If the dosing pump body is scratched, replace it.

For the DOSATRON D40MZ5, under-dosing may be caused by an air tightness problem (check the tightness of dosing part nuts and the condition of the suction hose), a worn or dirty suction valve seal (clean or replace), overflow or cavitation (reduce flow), a worn plunger seal (replace), or a scratched dosing pump body (replace).