1. Producte acabatview
The Gre SCGPHP100 is an advanced pool water treatment system that combines salt electrolysis for disinfection, an integrated pH controller, and a dosing pump. This system eliminates the need for traditional chemical chlorine, providing a more natural and comfortable swimming experience.

Figure 1: Complete Gre SCGPHP100 system including the main control unit, electrolysis cell, pH probe, and calibration solutions.
Característiques principals:
- Integrated Disinfection: Salt electrolysis system produces natural chlorine from salt, eliminating the need for chemical chlorine.
- pH Control: Built-in pH controller with an automatic dosing pump maintains optimal pH levels in your pool water.
- Alta capacitat: Capable of producing 21 g/h of chlorine, suitable for pools up to 100 m³.
- Confort millorat: Natural chlorine production reduces odors and eye irritation commonly associated with chemical chlorine.
- Chemical-Free Handling: Minimizes the storage and handling of hazardous pool chemicals.
2. Informació de seguretat
Read all instructions carefully before installation and operation. Failure to follow these instructions may result in injury or damage to the equipment.
- Desconnecteu sempre l'alimentació abans de realitzar qualsevol manteniment o servei.
- Assegureu-vos d'una connexió elèctrica a terra adequada.
- Mantingueu la unitat allunyada de la llum solar directa i de temperatures extremes.
- Do not operate the system if any part is damaged.
- Mantenir una ventilació adequada al voltant de la unitat.
- Mantenir fora de l'abast dels nens.
- Consult a qualified electrician or pool professional for installation if unsure.
3. Instal·lació i configuració
3.1. Desembalatge i inspecció
Traieu amb cura tots els components de l'embalatge. Verifiqueu que totes les peces siguin presents i no estiguin danyades. Consulteu la llista d'embalatge per obtenir un inventari complet.
3.2. System Placement
Install the main control unit in a dry, well-ventilated area, protected from direct weather exposure. The unit should be mounted vertically on a wall or sturdy surface near the pool's filtration system.

Figure 2: Main control unit with pH display and control buttons.
3.3. Connexions de fontaneria
- Electrolysis Cell: Install the electrolysis cell (salt cell) in the return line of your pool's filtration system, after the filter and heater (if applicable). Ensure the flow direction arrow on the cell matches the water flow.
- Sonda de pH: Install the pH probe in a dedicated probe holder or a suitable location in the plumbing line where water flow is consistent.
- Bomba dosificadora: Connect the suction tube of the dosing pump to a container of pH-reducing liquid (e.g., liquid acid). Connect the injection tube to an injection point in the pool's return line, typically after the electrolysis cell.

Figure 3: The transparent electrolysis cell where chlorine is generated.

Figure 4: The pH probe, used to measure the pool water's pH level.

Figure 5: Detail of the peristaltic dosing pump for pH correction.
3.4. Connexions elèctriques
Connect the main control unit to a dedicated, grounded electrical outlet. Ensure all connections are secure and comply with local electrical codes. Connect the electrolysis cell and pH probe cables to their respective ports on the main unit.
3.5. Initial Pool Water Preparation
- Add Salt: Add pool-grade salt to your pool water to achieve a concentration of 4 g/l (grams per liter). Circulate the water until the salt is fully dissolved.
- Balance Water Chemistry: Before starting the system, ensure your pool's alkalinity and calcium hardness are within recommended ranges.
4. Instruccions de funcionament
4.1. Encès
Once all connections are made and the pool water is prepared, switch on the power to the unit. The display will illuminate, showing the current pH reading.
4.2. pH Probe Calibration
For accurate pH readings, calibrate the pH probe regularly (e.g., monthly or after long periods of inactivity). Use the provided calibration solutions (pH 7.0 and pH 4.0).

Figure 6: pH 7.0 and pH 4.0 calibration solutions.
- Rinse the pH probe with distilled water.
- Immerse the probe in the pH 7.0 solution. Press the "CAL" button and follow the on-screen prompts until calibration is complete.
- Esbandiu la sonda de nou.
- Immerse the probe in the pH 4.0 solution. Press the "CAL" button and follow the on-screen prompts until calibration is complete.
- Return the probe to its holder in the plumbing line.
4.3. Setting pH Target
Use the "SET" button to adjust the desired pH target level (typically between 7.2 and 7.6 for pools). The system will automatically dose pH-reducing liquid to maintain this level.
4.4. Adjusting Chlorine Production
The unit features a "Power selector" to adjust the chlorine production level (e.g., 0%, 50%, 75%, 100%). Start with a moderate setting and adjust based on pool usage and chlorine demand. The "SALT" indicator will illuminate if salt levels are too low.
5. Manteniment
5.1. Electrolysis Cell Cleaning
The electrolysis cell may accumulate scale deposits over time, especially in hard water areas. Inspect the cell regularly (e.g., monthly) and clean as needed.

Figura 7: Angle view of the electrolysis cell, showing the internal plates.
- Turn off the system and close all valves to isolate the cell.
- Remove the cell from the plumbing.
- Soak the cell in a diluted acid solution (e.g., 1 part muriatic acid to 4 parts water) for no more than 15 minutes, or until deposits dissolve. Porteu l'equip de seguretat adequat.
- Rinse thoroughly with fresh water before reinstallation.
5.2. pH Probe Maintenance
- Keep the pH probe tip moist when not in use, preferably in a storage solution or pH 7.0 buffer.
- Clean the probe tip gently with a soft brush if deposits are visible.
- Recalibrate the probe regularly as described in Section 4.2.
5.3. Salt Level Monitoring
Regularly check your pool's salt concentration using a salt test kit. Maintain a level of 4 g/l for optimal system performance. Add salt as needed.
6. Solució De Problemes
| Problema | Causa possible | Solució |
|---|---|---|
| No Chlorine Production | Low salt level; Dirty electrolysis cell; Low water flow; System off. | Check salt level and add salt; Clean electrolysis cell; Ensure pump is running and filter is clean; Turn system on. |
| Incorrect pH Reading | pH probe needs calibration; Dirty pH probe; pH probe faulty. | Calibrate pH probe (Section 4.2); Clean pH probe; Replace pH probe. |
| pH Not Adjusting | Dosing pump not working; Empty pH-reducing liquid container; Clogged injection line. | Check dosing pump power/operation; Refill liquid container; Clear injection line. |
| "SALT" Indicator On | Nivell de sal massa baix. | Add pool-grade salt to achieve 4 g/l concentration. |
7. Especificacions
| Característica | Detall |
|---|---|
| Número de model | SCGPHP100 |
| Marca | Gre |
| Chlorine Production Capacity | 21 g/h |
| Volum de piscina recomanat | Fins a 100 m³ |
| Required Salt Concentration | 4 g/l |
| Dimensions del producte (L x A x A) | 19.5 x 13 x 26 cm |
| Pes del producte | 1.3 quilos |
| Fabricant | GRE |
8. Garantia i Suport
For warranty information and technical support, please refer to the official Gre weblloc web o poseu-vos en contacte amb el vostre distribuïdor autoritzat. Conserveu el rebut de compra com a comprovant de compra.
Note: Information regarding spare parts availability is not provided in the product data.