Short answer: Dosing pump installation consists of mounting the pump in a suitable place, connecting the suction and discharge lines, preparing the injection point, bleeding the air, making the electrical connection and setting the initial dose. On models with pH/ORP or free chlorine measurement, fitting and calibrating the electrode or sensor is also part of the installation. For a chlorine dosing system installation, send us the pump model, line pressure and your chemical via the form on our contact page or on +9+90 216 606 44 72 / WhatsApp +9+90 532 542 81 24.
Correct installation is the first requirement for the pump to deliver its catalogue flow rate and run trouble-free for a long time. Air entering the suction line, a poorly chosen injection point or an unearthed socket can make even a well-chosen chlorine dosing pump model work inefficiently. This page describes, step by step, the installation work covered by our chlorine dosing pump service.
What Steps Are Involved in Installing a Dosing Pump?
Installing an electromagnetic dosing pump takes seven steps; on measurement-controlled models, the electrode or sensor is added as an eighth step.
- Location and mounting: The pump is mounted close to the chemical tank, in an upright position, in a dry, ventilated place out of direct sunlight. AnTech electromagnetic pumps have IP65 housings; according to catalogue values, the ambient temperature should be 0–45 °C and the chemical temperature 0–40 °C. Nova models such as the AnTech Nova A 10 L/h 10 Bar Analogue Dosing Pump with Level Control come with a wall-mounting kit and mounting foot; with the mounting foot they can also be installed on a flat surface on the tank.
- Suction line: The suction assembly is positioned close to the bottom of the tank, but high enough to stay clear of sediment. The suction hose is kept short and free of kinks, and the connections are tightened so that no air can get in. On suction assemblies with a level sensor, the sensor cable is connected to the pump’s level input; the AnTech Lara APS 5 L/h 7 Bar Analogue Dosing Pump with Level Control monitors the tank level with this assembly.
- Discharge line: The discharge hose is run from the pump head to the injection point without tension or sharp bends. According to AnTech’s material code tables, PE hose is used on the discharge side and PVC hose on the suction side.
- Injection point: The discharge assembly is connected to the injection point on the line. The line pressure at this point must not exceed the pump’s maximum back pressure. Choose a point where the chemical will mix well with the water and that is accessible for maintenance.
- Priming: At first start-up, the air-bleed connection on the head is opened and the air in the suction line is expelled; once the chemical is arriving steadily, the connection is closed. Digital Nova models have a rapid shortcut in the menu for priming.
- Electrical: The pump is connected to an earthed circuit protected by a residual current device. The power supply is 95–260 V AC (automatic mains adaptation) on the Nova series, 230 V AC 50 Hz on the Lara and Nano series, and 230 V AC 50–60 Hz on the Optima series. If a water meter, flow sensor or 4–20 mA signal will be used, these cables are also connected at this stage.
- Initial setting: The pump is started at a low setting. A few hours later the chlorine in the water is measured and the setting is changed gradually. You can find the starting flow rate with our chlorine dosing calculator. On the Nova D, DMPR and DMİA models, capacity calibration is carried out from the menu so that the flow rate on the display matches the actual flow rate.
- Electrode and calibration on measurement-controlled models: The pH/ORP electrode or free chlorine sensor is fitted in a suitable holder or housing and calibrated with buffer solutions or against a reference measurement. Details are on our AnTech dosing pump calibration page.
Mechanical diaphragm EMD pumps require more preparation. The pump is fixed to a flat, solid, vibration-free base; if possible, the chemical tank is positioned higher than the pump. Fitting a pressure relief valve on the discharge line is recommended, and on long lines a pulsation damper evens out dosing. The motor is connected by a qualified electrician together with a motor protection switch.
How Are Electrodes and Sensors Positioned on Measurement-Controlled Models?
The electrode or sensor is placed at a point that shows the true value of the water; a measurement taken right next to the injection point, in the zone where the chemical has not yet mixed, is misleading.
For the AnTech Nova DMPR 10 L/h 10 Bar pH/ORP Controlled Dosing Pump and the Lara PR, the catalogue lists electrode sets with holders: P-coded sets for pH and R-coded sets for ORP. Along with the electrode, each set contains one of the following, plus a calibration solution: an immersion probe holder, an electrode housing with filter, a 1/2″–12 mm PP electrode fixing fitting or a hose-type probe holder. Which holder to choose depends on whether the electrode will be fitted in a tank, on a pipe or in a sample line. All measurement-controlled models are listed in the pH / ORP controlled dosing pumps category.
On the Lara PR, a measurement settling time of 0–60 minutes can be entered for start-up. During this time the pump does not dose by measurement, preventing overdosing based on a false reading before the electrode has stabilised.
The AnTech Nova DMİA 10 L/h 10 Bar Dosing Pump with Free Chlorine Measurement works with a free chlorine sensor. The sensor and its housing are not supplied with the pump and are selected separately. The sensor is fitted in its housing and operated under the flow conditions recommended by the manufacturer; calibration is carried out once the sensor has stabilised. Models with free chlorine measurement are in the dosing pumps with chlorine measurement category.
Pre-Installation Checklist
Having the following ready before installation shortens the job and reduces the need for changes afterwards.
- The pump model and capacity: the required flow rate calculated from the line flow rate and target chlorine value.
- The line pressure at the injection point (bar).
- An injection connection on the line for the discharge assembly.
- The chemical tank; the type and concentration of the chemical.
- An earthed socket protected by a residual current device near the pump.
- A wall or flat mounting surface protected from sunlight and water splashes.
- For proportional dosing, a water meter or flow meter with a signal output.
- For measurement-controlled models, the electrode or sensor, holder or housing, and calibration solutions.
- Gloves, safety goggles and clean water in case of chemical splashes.
- Photos of the installation site, tank and line, to send us with your request.
If you have not chosen a pump yet, you can compare models by flow and pressure values in the electromagnetic dosing pumps category.
Common Installation Mistakes
A large share of the problems seen after installation stem from a few recurring mistakes.
| Mistake | Result | Correct approach |
|---|---|---|
| Long, kinked or loosely connected suction hose | Air gets in; the pump strokes but does not deliver | Short, straight suction line and tight connections |
| Suction assembly resting in sediment at the bottom of the tank | The foot filter clogs and flow drops | Keep the foot filter slightly above the bottom |
| Line pressure exceeding the pump’s limit | The pump cannot deliver, or flow drops sharply | Choose a capacity suited to the line pressure (e.g. Nova 3.5 L/h 20 bar for above 10 bar) |
| Suction and discharge hoses mixed up | The hose on the discharge side may not be rated for the pressure | PVC hose on suction, PE hose on discharge |
| Adjusting the setting before bleeding the air | The pump strokes without delivering and the setting is misjudged | Bleed the air first, then adjust |
| Unearthed or unprotected socket | Electrical safety risk | Earthed circuit with residual current protection |
| Commissioning without calibrating the electrode, or leaving it dry | Incorrect measurement; overdosing or underdosing | Calibrate with buffer solution and keep the electrode wet |
| Fitting the electrode right next to the injection point | The measurement does not show the true value of the water | A point away from the zone where the chemical has not mixed |
| Water meter signal not connected in proportional mode | The pump does not stroke at all | Check the signal cable and the meter pulse interval |
For regular checks after installation, see our dosing pump maintenance service page. If the pump does not work as expected after installation, the symptom table on the dosing pump repair page gives initial guidance.
Sources
- AnTech 2025 Product Catalogue (KT_25 R02): feature lists, material code tables and accessory lists for the Nova, Lara, Optima and Nano series; technical tables for the EMD series.
Frequently Asked Questions
What needs to be ready for a dosing pump installation?
The pump, the chemical tank, an injection connection on the line, an earthed socket protected by a residual current device and a surface on which to mount the pump must be ready. Knowing the line pressure and the required flow rate lets you confirm that the pump has been chosen with the right capacity.
Where should the injection point be?
It should be at a point where the line pressure is below the pump's maximum back pressure, where the chemical mixes well with the water and that is accessible for maintenance. In measurement-controlled systems, sufficient distance is left between the injection point and the electrode.
Can the pump be installed on top of the chemical tank?
The Nova series comes with a mounting foot and can be installed on a flat surface on the tank. The catalogue also lists the mounting foot as an accessory for the Optima series; other models are mounted upright on a wall. In either case, the pump must be in a dry, ventilated place out of direct sunlight.
Why is the pump not delivering chemical at first start-up?
The most common cause is air in the suction line. Open the air-bleed connection on the head and run the pump until the chemical arrives steadily. Also check that the suction connections are tight and that the suction assembly is submerged in the liquid.
How is the pump set after installation?
Start the pump at a low setting, measure the chlorine level in the water a few hours later and change the setting gradually. On digital Nova models, carrying out capacity calibration first ensures that the flow rate on the display matches the actual flow rate.