GRUNDFOS DATA BOOKLET. Selcoperm SES. Electrolysis system for 5-45 kg/h Cl2 (equivalent) Safe and simple production of sodium hypochlorite solution

Transcription

1 GRUNDFOS DATA BOOKLET Selcoperm SES Electrolysis system for 5-45 kg/h Cl2 (equivalent) Safe and simple production of sodium hypochlorite solution

2 Selcoperm SES Table of contents 1. General information Fundamentals of disinfection Disinfection with chlorine The Selcoperm electrolysis principle Benefits of the electrolysis with Selcoperm Applications Selcoperm Electrolysis System (SES) 5 Description Selcoperm Electrolysis System (SES) Selcoperm electrolyser Rectifier DC cable Degassing and storage tank Brine dosing station Chiller Heater Brine tank Acid cleaning station on a trolley Acid cleaning station for wall-mounting Gas warning system Accessories 20 Maintenance kits Handheld conductivity measuring device Test kit Compact photometer DIT-L Grundfos Product Center 21 2

3 Selcoperm SES 1 1. General information Fundamentals of disinfection Many diseases are transmitted by drinking water. Among these diseases are typhus, paratyphoid, cholera and diarrhoea with vomiting, as well as viral infections such as hepatitis and poliomyelitis. Legionella in shower or bathing water can provoke pulmonary diseases. Compared to the chemical contamination of water, where toxicity values are attained only slowly in general, in a drinking water epidemic infections spread dramatically in the whole supply area. The best prevention of epidemics is to use microbiologically clean non polluted water, preferably deep ground water as drinking water. Unfortunately, in some regions this is not possible for hydrogeological or quantitative reasons. In these regions, surface water is used, which often has to be purified. Pathogens that are possibly encountered, can be removed from the water or killed by adding certain substances to the water, i.e. by disinfecting the water. General information Disinfection with chlorine The most widespread disinfectant used in the treatment of drinking water is chlorine, which can be applied in a variety of ways. History has taught us that, in bacteriological terms, chlorinating water is a quite safe way of disinfecting drinking water. After all, more than 100 years have passed since chlorine was used to disinfect drinking water for the first time. Many years of experience have shown that acute toxicity can be excluded, when chlorination is executed correctly. Generally, three methods are used for chlorinating drinking and process water: Chlorine gas dosing Dosing of commercial sodium hypochlorite solution or calcium hypochlorite solution Electrolytic sodium hypochlorite generation on site The third method in particular offers a number of advantages, which are incorporated in the Selcoperm chlorine electrolysis systems.

4 1 Selcoperm SES General information The Selcoperm electrolysis principle With electrolysis, sodium hypochlorite is produced directly from a solution of common salt using electricity. NaCl H 2 O - Cathode Fig. 1 H 2 NaClO NaOH Cl 2 H + H 2 O OH - Na + NaCl Cl - Selcoperm electrolysis principle NaClO solution The following reactions take place in the electrolysis cell: 2NaCl + 2H 2 O 2NaOH + Cl 2 + H 2 The chlorine (Cl 2 ) produced reacts immediately with the caustic soda solution (NaOH) also formed, resulting in a sodium hypochlorite solution (NaClO): Cl 2 + 2NaOH NaCl + NaClO + H 2 O The sodium hypochlorite solution, which is the disinfectant, has a ph value between 8.5 and 9.5, and a chlorine concentration of 8 g/l. It has a half-life of several months, which makes it ideal for storage in a buffer tank. After dosing the solution into the water flow, no ph value correction is necessary, as it is often required e.g. in electrolysis according to the membrane principle. The sodium hypochlorite solution reacts in a balance reaction, resulting in hypochlorous acid (HClO), the effective disinfectant: NaClO + H 2 O NaOH + HClO The resulting hypochlorous acid is the actually effective compound for disinfection of the water. The dissociation of acid to anions is primarily according to an equilibrium dependent on the ph value according to the equation: HClO + H 2 O H O + + ClO - + Anode TM Benefits of the electrolysis with Selcoperm Safe and reliable method of producing sodium hypochlorite on-site Common salt is the base material - it is non-toxic, easy to store and easy to handle Only water, common salt and electricity are needed for the electrolysis - low operating costs, world-wide use Fresh sodium hypochlorite is always on hand and does not dissociate like commercial sodium hypochlorite solutions Low formation of chlorate as a by-product Less safety requirements than chlorine-gas-based systems Lower ph value than commercial sodium hypochlorite reduces scaling of injection units etc. in hard water areas Robust design for easy installation and maintenance Long service life, compared with membrane cell electrolysis Applications Typical disinfection applications for Selcoperm systems are especially in drinking water treatment, water treatment for industrial processes and cooling towers. The systems are an excellent alternative to chlorine gas or commercial sodium hypochlorite applications. Remark: Legislation on the use of disinfectants in water treatment applications is country-specific. Please contact your local Grundfos sales office for further details on the use of our products in your application and area. % HClO Fig. 2 % ClO - HClO ClO ph 0 C 10 C 0 C Dissociation of hypochlorous acid in dependence of the water ph value TM The dosing quantity depends on the application as well as the local regulations. In general, the concentration after the injection unit is 0. to 2 ppm chlorine equivalent. 4

5 Selcoperm SES 2 2. Selcoperm Electrolysis System (SES) Description The Selcoperm electrolysis system is a modular system for the safe production of a 0.8 % sodium hypochlorite solution from a diluted brine solution. The system is suitable for the disinfection of drinking water and industrial process water. The intended use of the Selcoperm system comprises the stationary operation either in continuous or batch processing. Installation scheme I H ATEX zone 2 radius 1-2 m Selcoperm Electrolysis System (SES) F 4 A K E C 1 D G B I TM Fig. Installation scheme of a Selcoperm system Pos. Component Description A Water softener The water softener provides the softened mains water required for the electrolysis. B Chiller and/or heater To provide the right mains water temperature, an optional chiller or heater can be used. C Brine tank The brine tank is used for preparation and storage of brine. D Brine dosing station The brine dosing station doses the required amount of brine into the process. E F G Selcoperm electrolyser Rectifier Degassing and storage tank with sensors and degassing fan The Selcoperm electrolyser comprises: Electrolysis cells Hydraulic chamber Control cabinet 7" multi-colour touchscreen for operating and monitoring of the whole electrolysis system The rectifier converts the alternating current (AC) from the power supply into the direct current (DC) needed to run the Selcoperm electrolyser. In the degassing and storage tank the hydrogen gas is removed from the sodium hypochlorite solution. The degassing and storage tank must be installed as close as possible to the Selcoperm electrolyser. The level inside the tank is monitored by a level sensor. The degassing fan ensures a safe dilution and removal of hydrogen gas. The sodium hypochlorite solution can be dosed directly from the tank to the point of application. It is also possible to pump the sodium hypochlorite solution from the tank into separate storage tanks. H Gas warning system The gas warning system permanently monitors the concentration of hydrogen gas at the installation location. I Building ventilation Natural ventilation via ventilation holes or technical ventilation is required at the installation location. Legal requirements and local standards must be observed. K DC cable set Flexible insulated copper cable for direct current connection between the Selcoperm electroyser and the rectifier. 1 Soft water line 2 Brine line Sodium hypochlorite solution line Besides the sodium hypochlorite solution this line contains hydrogen gas, which is removed in the downstream degassing and storage tank. 4 Exhaust air line Through this line the dilution air (99 %) and the hydrogen gas (1 %) are removed from the degassing and storage tank by means of forced ventilation. The exhaust air line has to be directed with a constant upwards incline to a safe discharge point outside the building. 5 Sodium hypochlorite solution line to the point of application - Drain A drain for maintenance is required on site. 5

6 2 Selcoperm SES Selcoperm Electrolysis System (SES) Functioning and control Saturated brine from the brine tank (C) is dosed by the brine dosing station (D) into the Selcoperm electrolyser (E), where it is mixed with softened water from the softener (A) in a specified proportion. The resulting diluted brine is led into the electrolysis cells inside the Selcoperm electrolyser (E), where it is converted into sodium hypochlorite and hydrogen by means of direct current (DC) from the rectifier (F). The resulting mixture is led through a line with a slight upwards incline of at least 1 % into the degassing and storage tank (G). The degassing fan at the tank (G) ensures safe dilution and removal of the hydrogen gas to a safe external discharge point. The sodium hypochlorite solution can be dosed directly from the tank (G) to the point of application. It is also possible to pump the sodium hypochlorite solution from the tank (G) into separate storage tanks. All components and safety functions are monitored and operated via a multi-colour touchscreen at the Selcoperm electrolyser (E). Unique selling points Unique safety concept, evaluated with technical report by a third-party expert from TÜV SÜD Product Service GmbH No explosion-proof area needed inside the building Flow-proportional brine dosing for precise brine concentration Standardised modular system Outstanding performance data Convenient 7" multi-colour touchscreen with self-explanatory menu structure Innovative housing design for easy maintenance, flexible installation and safe operation Chemically resistant housing material High quality standard: Every Selcoperm electrolyser is checked for 100 % performance and tightness at the factory Remote maintenance (optional) Safety concept A reliable safety concept for the operation of the whole system is mandatory, because hydrogen is produced as a by-product in the electrolysis cells. Before even entering the degassing and storage tank (G), most of the hydrogen is diluted by the degassing fan to 25 % of the lower explosive limit (LEL) and led away into the atmosphere. In the tank the residual hydrogen escapes, is diluted and led away into the atmosphere as well. The whole Selcoperm electrolysis system is monitored permanently and redundantly. Several sensors at the system, together with hydrogen sensors at the installation location ensure a safety shutdown of the whole system in the event of a failure. Small amounts of hydrogen, which can escape due to a leakage for instance, are led away via the ventilation hole (I) at the highest point of the room. The safety concept is evaluated with technical report by a third-party expert from TÜV SÜD Product Service GmbH. It ensures safe operation without any additional explosion protection at the installation location. 6

7 Selcoperm SES. Selcoperm Electrolysis System (SES) The following data apply to the overall Selcoperm electrolysis system and cover all capacity levels. Water quality specification The water supply must conform to the required standard of drinking water given in the specification below. Ask your local water supplier for the specific values. Parameters Value (maximum unless stated otherwise) Colour [mg/l Pt/Co] 20 ph value Iron Fe [µg/l] 200 Manganese Mn [µg/l] 20 Fluoride F [mg/l] 2 Turbidity [NTU] 4 Max. particle size [µm] 100 Salt specification Use food-grade granular/pellet salt (98.5 % NaCl) according to EN type 2 with following minimum requirements: Max. limits of dry salt. Parameter Symbol Max. mass fraction [mg/kg] Iron Fe 10.0 Manganese Mn 10.0 Bromide Br Calcium Ca Magnesium Mg Ambient conditions Permissible ambient temperatures (min./max.) Transport* -10 / +50 C Storage* +0 / +40 C Operation +5 / +40 C Operation (rectifier) +10 / +40 C Max. relative humidity (non-condensing) 90 % Max. relative humidity (non-condensing) for rectifier 75 % Max. altitude above sea level 2000 m * System must be drained. For storage temperatures below +5 C, the whole system including water softener, lines and external components must not contain any water. Exposition to direct sunlight can cause changes in colour as well as material deformations and cracks. Don't expose the system to direct sunlight. 7

8 Selcoperm SES Selcoperm electrolyser The Selcoperm electrolyser is the core piece of the Selcoperm electrolysis system. 6 V 5 V Z B A 6 TM Fig. 4 Overview components SES-5000 to SES V 2 6 V Z B A TM Fig. 5 Overview components SES to SES

9 Selcoperm SES Legend Pos. Description 1 Chemically resistant PEHD frame with collecting tray 2 Easily removable powder-coated housing 4 Horizontal electrolysis cells with transparent PVC pipe for easy process monitoring and visual electrode check. Several sensors monitor the liquid level and temperature, the voltage and the temperature of all direct-current (DC) connections. Lockable hydraulic chamber with shut-off valves and adjustment valves, temperature sensors, flow sensors and leakage sensors, sample valves for brine and sodium hypochlorite solution, and a connection for acid cleaning. Lockable control cabinet with multi-colour touchscreen, emergency stop and main switch. The control cabinet monitors and/or controls the following components and functions: Rectifier Brine dosing station Sensors and valves of the Selcoperm electrolyser Level sensors and flow sensors of the degassing and storage tank and the sodium hypochlorite solution line 5 Degassing fans (duty/standby) of the degassing and storage tank Potential-free contact for start/stop signal for optional transfer pumps to transfer the sodium hypochlorite solution from the degassing tank to separate storage tanks Gas warning system Several potential-free alarm contacts Acid cleaning station Remote maintenance (optional) 6 Top or bottom connection for direct current cables from the rectifier 11 A B V Z 7" multi-colour touchscreen for operating and monitoring of the whole electrolysis system. Selectable languages are English, German, Spanish, French, Chinese, Turkish and Russian. The system can be operated in two operation modes: automatic mode service mode The system can also be remotely controlled and monitored via PROFINET. Soft water inlet Brine inlet NaClO solution outlet Drain outlet General data Sodium hypochlorite concentration Salt consumption Power consumption (DC/AC)* Soft water consumption Soft water inlet pressure Soft water temperature Soft water quality for operation Max. pressure inside electrolyser, NaClO solution line and degassing and storage tank g/l -.5 kg NaCl per kg of Cl 2 (equivalent) / kwh per kg of Cl 2 (equivalent) 125 litres per kg of Cl 2 (equivalent) -5 bar (depending on the capacity level) C (for higher or lower temperatures an external chiller or heater is required) Drinking water quality, softened to: 1 dh / 17.8 ppm CaCO and less 1 bar * System with air-cooled rectifier, excluding optional chiller and heater Capacity levels, data and product numbers SES type Connections Capacity level Cl 2 (equivalent) [g/h] Max. power rating of built-in control cabinet [kw] Total soft water flow [l/h] Empty Weight [kg] Filled Product number SES SES SES SES SES SES SES Pos. Description SES-5000 SES-7500 SES SES SES SES-0000 SES A Soft water inlet DN 25 DN 25 DN 25 DN 25 DN 40 DN 40 DN 40 B Brine inlet DN 20 DN 20 DN 20 DN 20 DN 25 DN 25 DN 25 4 Acid cleaning inlet and outlet DN 20 DN 20 DN 20 DN 20 DN 20 DN 20 DN 20 V NaClO solution outlet DN 50 DN 50 DN 50 DN 65 DN 100 DN 100 DN 100 Z Drain outlet DN 25 DN 25 DN 25 DN 25 DN 25 DN 25 DN 25 9

10 Selcoperm SES Built-in control cabinet Supply voltage: V, Hz ( phases + N + PE) Enclosure class: IP54 Electrical safety class: I Pollution degree: 2 Dimensions and space requirements SES-5000, SES-7500, SES-10000, SES SES-20000, SES-0000, SES TM Fig. 6 Dimensions and space requirements. Dimensions in mm. 10

11 Selcoperm SES Rectifier The rectifier converts the alternating current from the power supply into the direct current needed to run the Selcoperm electrolyser. In case of a failure, the rectifier shuts down. The communication between the Selcoperm electrolyser and the rectifier is designed redundantly (Profinet and hardwired) for the safety shutdown functions. Technical data for air-cooled rectifier Enclosure class: IP20 Max. relative humidity (non-condensing): 75 % Permissible ambient temperature for operation +10 / +40 C (min. / max.): TM Fig. 7 Air-cooled rectifier SES type Dimensions L x W x H Weight [t] DC current [A] Power loss [kw] Air flow [m³/h] SES x 875 x x SES x 875 x x SES x 875 x x SES x 875 x x SES x 875 x x SES x 875 x x SES x 875 x 2500 x Input voltage 50 Hz phases + PE [VAC] Current per phase [A] Product number Water-cooled rectifiers are available on request DC cable Flexible insulated copper cable for direct current connection between the Selcoperm electroyser and the rectifier. The standard cable length must not exceed 10 m. Longer cables are available on request. The cable required depends on the type of the Selcoperm electroyser. SES type Length [m] Cable cross-section [mm 2 ] Product number SES-5000 SES-7500 SES SES SES SES SES

12 Selcoperm SES Degassing and storage tank The degassing and storage tank is a mandatory component of the Selcoperm electrolysis system. In systems with several electrolysers, one tank for each electrolyser must be installed. The volume of the tank depends on the capacity level of the Selcoperm electrolyser. Engineered degassing and storage tanks are available on request (e.g. larger volumes than indicated in the table). The sodium hypochlorite solution can be dosed directly from the tank to the point of application. In this case, the volume of the tank must be selected according to the demand of sodium hypochlorite solution of the individual application. It is also possible to pump the sodium hypochlorite solution from the degassing and storage tank into separate storage tanks. Separate storage tanks and transfer pumps are available on request. One degassing fan is installed on the tank by default. To avoid a system shutdown due to a defective fan, an additional standby fan can be ordered. Installation set A special installation set is pre-installed at the degassing and storage tank. The use of this installation set is mandatory to ensure the compliance with the certified safety concept of the Selcoperm electrolysis system. Components Pos. Description Part of installation set 1 NaClO solution inlet 2 Air inlet Exhaust air outlet 4 Inspection opening 5/6 NaClO solution outlet or Drain 7 Level sensor connection 8 Overflow switch connection 9 Degassing fan yes 10 Level sensor yes 11 Calibration pipe 12 Overflow switch yes - Air flow sensor for exhaust air line with connection flange yes - Leakage sensor (for installation with collecting tray) yes - T-piece with NaClO solution line level switch yes A collecting tray is not within the scope of delivery /6 Fig. 8 Degassing and storage tank 1.5 m TM

13 Selcoperm SES Technical data SES type Volume [m ] Diameter Height (with additional standby fan) Air flow [m /h] Tank with one fan Product number Tank with additional standby fan SES (2500) SES (2700) SES (2600) SES (2900) SES (2900) SES (200) SES (900) Connections Pos. Description SES 5000 SES 7500 SES SES SES SES 0000 SES NaClO solution inlet (loose flange) DN 80 DN 80 DN 80 DN 100 DN 125 DN 125 DN 125 d125 * d125 * d125 * 2 Air inlet (socket flange) DN 150 DN 150 DN 150 DN 200 DN 200 DN 200 DN 00 Exhaust air outlet (socket flange) DN 125 d125 * DN 150 DN 150 DN 200 DN 250 DN 00 DN 00 4 Inspection opening (blank flange) DN 150 DN 150 DN 00 DN 00 DN 00 DN 400 DN 400 5, 6 NaClO solution outlet or Drain (union, DN80 flange) DN 2 DN 2 DN 50 DN 50 DN 50 DN 80 DN 80 7 Level sensor connection (thread) 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 1/2" 8 Overflow switch connection (solid flange) DN 25 DN 25 DN 25 DN 25 DN 25 DN 25 DN 25 * Outer pipe diameter 1

14 Selcoperm SES Brine dosing station The brine is dosed with digital dosing pumps. To ensure reliable brine dosing, the dosing station comprises a duty pump and a standby pump. Pulsation dampers ensure low pulsation. As the counterpressure of the Selcoperm electrolyser is too low, the brine dosing station contains a pressure loading valve. The dosing station is controlled via the touchscreen on the Selcoperm electrolyser. A Flow Monitor is installed on each pump to monitor the dosing process. Errors in the dosing process are displayed on the touchscreen of the Selcoperm electrolyser. Components 1 2 Pos. Description 1 Dosing cabinet with sliding doors 2 Pressure pulsation damper Pressure loading valve PLV 4 5 Digital dosing pumps (duty/standby) with flow monitoring function Suction pulsation damper with scale for calibration and manual vacuum pump for priming 5 Fig. 9 Brine dosing station 4 TM Technical data The Selcoperm electrolyser provides the brine dosing station with the supply voltage of 20 V, 50/60 Hz, and the control current of 4-20 ma. SES type Dosing capacity [l/h] Pump type SES DDA SES DDA SES DDA SES DDA Length Height Width Weight [kg] Product Number SES DME SES DME SES DME

15 Selcoperm SES Water softener The water softener provides the softened mains water required for the electrolysis. The water softener is equipped with a dual head and two cylinders to ensure a constant soft-water supply even during regeneration. A stand-alone brine tank provides the brine needed for regeneration. An installation set for piping, a bypass valve and a filter with manual backwash function are delivered with each water softener. The water softener can be ordered pre-assembled on a skid or without skid. Fig. 10 Water softener TM Technical data Supply voltage: Operating pressure: Power consumption: 20 V, 50/60 Hz 2-8 bar 10 VA SES type Soft water flow [l/h] Diameter Cylinders Height Volume [l] Brine tank Diameter Height Water inlet/outlet Product number softener, filter and bypass pre-assembled on skid without skid SES x DN SES x DN SES x DN SES x DN SES x DN SES x DN SES x DN

16 Selcoperm SES Chiller If the required soft water temperature cannot be met, a chiller can be used to cool the soft water down. The chiller is placed between the water softener and the Selcoperm electrolyser. The softened water entering the chiller must comply with the recommended soft water quality (see page 7). The chiller is designed to run 24 hours a day, controlled via a local control panel. TM Fig. 11 Chiller Technical data Supply voltage: 400 V, 50/60 Hz ( phases + PE), 80 V and 415 V are available on request Max. water temperature inlet: 0 C Water temperature outlet: 15 C Flow [l/h] Capacity level Cl 2 (equivalent) [g/h] Type * The values apply to the operating point, the maximum values are higher. Ambient temperature range: C (type OLB), 5-45 C (type cboxx, Arctic) Cooling capacity [kw] Power consumption [kw]* Current consumption [A]* Length Width Height Weight [kg] Product number vboxx vboxx cboxx cboxx cboxx cboxx cboxx x x cboxx x x x x x x x x Arctic x x Arctic 50 2 x x x x x x x Flow [l/h] Capacity level Cl 2 (equivalent) [g/h] Type Ambient temperature range: C (type OLB), 5-50 C (type cboxx, Arctic) Cooling capacity [kw] Power consumption [kw]* Current consumption [A]* Length Width Height Weight [kg] Product number vboxx vboxx cboxx cboxx cboxx cboxx cboxx x x cboxx x x x x x x x x Arctic x x Arctic 80 2 x x x x x x x

17 Selcoperm SES Heater If the required soft water temperature cannot be met, a heater can be used to warm the soft water up. The heater is placed between the water softener and the Selcoperm electrolyser. The softened water entering the heater must comply with the recommended soft water quality (see page 7). The device is designed to run 24 hours a day, controlled via a local control panel. TM Fig. 12 Heater Technical data Supply voltage: 400 V, 50/60 Hz ( phases + PE) Min. water temperature inlet: C Water temperature outlet: 15 C Flow [l/h] Capacity level Cl 2 (equivalent) [g/h] Heating capacity [kw] Type Power consumption [kva] Flange Fuse rating [A] Heater Weight [kg] Control panel Heater Product number * The installation set comprises two temperature sensors Pt100 with T-piece, and three bypass valves with valve position indicator Control panel HF/SE DN HF/SE DN HF/SE DN HF/SE DN HF/SE DN HF/SE-60 6 DN 50 2 x HF/SE DN 80 2 x x HF/SE DN 80 4 x x HF/SE-45 6 DN x x HF/SE DN x Installation set* Calculation of heating capacity The required heating capacity can be calculated individually as follows: Required heating capacity [kw] Water flow [m /h] * Temperature difference to achieve [K] * 1.16 Brine tank The brine tank is used for preparation and storage of brine. Material: Polyethylene With water inlet valve Gravel bed is not included (gravel bed height depends on salt type) Optional overflow switch is available on request Salt capacity [kg] Diameter [m] Height [m] Inlet Outlet Gravel (4-8 mm) required for a gravel bed height of mm [m ] Product number DN 25 DN DN 25 DN Other sizes, separate storage tanks and transfer pumps as well as gravel are available on request. 17

18 Selcoperm SES Acid cleaning station on a trolley The Selcoperm electrolyser provides the acid cleaning station with the supply voltage by means of a special plug. The acid cleaning station is controlled via the touchscreen on the Selcoperm electrolyser. Description Product number Acid cleaning station on a trolley The acid cleaning station is pre-assembled on a trolley for acid cleaning of the electrodes. Features 00-litre acid tank with collecting tray DMX dosing pump with single-phase motor (20 V, 50 Hz) Equipment for hydraulic and electrical connection to the Selcoperm electrolyser Acid cleaning station for wall-mounting The acid cleaning station is pre-assembled and ready for mounting on a wall. Description Product number Acid cleaning station for wall-mounting Features With foot valve and 10 m hose for the connection to the Selcoperm electrolysis system and an external acid tank Without tank, trolley and collecting tray Overview 4 Overview Fig. 1 Acid cleaning station on a trolley Pos. Description 1 Collecting tray 2 Trolley Acid tank, 00 l 4 Return flow line 5 Special plug for connection to Selcoperm electrolyser 6 -way ball valve 7 Dosing pump 8 Connection to Selcoperm electrolyser with manual valve 9 -way ball valve 10 Drain valve 11 Pressure relief valve TM Fig. 14 Acid cleaning station - wall mounted Pos. Description 4 Return flow line 5 Special plug for connection to Selcoperm electrolyser 6 -way ball valve 7 Dosing pump 8 Connection to Selcoperm electrolyser with manual valve 9 -way ball valve 11 Pressure relief valve TM

19 Selcoperm SES Gas warning system As a part of the safety concept, a gas warning system for hydrogen gas (H 2 ) must be installed at the installation location. A self-contained gas warning system with at least two sensors for each Selcoperm electrolyser must be used. The gas warning system has to provide two potential-free output contacts, which are directly connected to the Selcoperm electrolyser to shut down the whole system in case of gas leakage. The contact type of the output contact must be NC (normally closed) to ensure the safety shutdown even in case of wire breakage. Grundfos provides a suitable gas warning system meeting all these requirements. It provides the information needed at a glance via a comprehensive display and LEDs showing the status with different colours. The system can operate stand-alone or interface with alarm devices and control systems using several outputs. TM Fig. 15 Gas warning system and sensor Features Wall-mounted IP65 control panel with simultaneous display of up to four gas sensors. Ambient temperature up to 55 C. Sensors selectable with local calibration directly on the sensor or with remote calibration module Output connection for one or two audible or visual alarms, 5 A, 24 VDC Potential-free contacts rated 5 A, 250 VAC (non-inductive) for Alarm 1, Alarm 2 and Fault 8 output relays, configurable to different alarms Optionally extendable with further relay modules Operates with 24 VDC external power supply as a standard. Optional internal power module for use with VAC, 50/60 Hz, 2 A can be supplied. A local UPS (Uninterruptible Power Supply) has to be provided. Multi-language PC software to set parameters Description Product number 4-channel gas warning controller Internal power module VAC, 50/60 Hz, 2 A PC software with adapter cable Hydrogen sensor, range % LEL, local calibration Hydrogen sensor, range % LEL, remote calibration Calibration gas 2 %, bottle with regulating valve* Combined horn and light alarm, 24 VDC * Local legislation may restrict shipping 19

20 4 Selcoperm SES Accessories 4. Accessories Maintenance kits These maintenance kits comprise the diaphragm and valve parts for the maintenance of the brine pumps in the brine dosing station. One kit is required for each pump. Description SES type Pump type Maintenance kit for brine pump Product number SES-5000 SES-7500 SES SES SES DDA DME SES-0000 SES DME Test kit Test kit for SES, comprising: Measuring cylinder Total hardness test for titrimetric determination of the water hardness Thermometer Spindle for specific gravity measurement Titration set for measurement of the chlorine concentration in the sodium hypochlorite solution Operating instructions Handheld conductivity measuring device Features Long-living 2-pole graphite measuring cell Display alternatives: TDS, salinity and temperature Automatic temperature compensation Low current consumption Adjustable Fig. 16 Handheld conductivity measuring device Technical data TM Fig. 17 Test kit Description Product number Test kit Compact photometer DIT-L For quick determination of the concentration of chlorine, chlorine dioxide or ozone as well as the ph in water. For details, please see the DIT-L data booklet. TM Measuring ranges Conductivity ms/cm Temperature C Accuracy Conductivity, TDS, salinity ± 0.5 % of reading ± 0.5 % full scale TM Temperature Power supply ± 0. K Fig. 18 DIT-L photometer Battery (included) Power consumption 9 V battery, type IEC 6F22 < 1.5 ma Parameter Chlorine Measuring range mg/l Order data Chlorine dioxide Ozone mg/l mg/l Description Product number ph value ph Handheld conductivity measuring device

21 5 Selcoperm SES Grundfos Product Center 5. Grundfos Product Center Online search and sizing tool to help you make the right choice. "SIZING" enables you to size a pump based on entered data and selection choices. "REPLACEMENT" enables you to find a replacement product. Search results will include information on the following: the lowest purchase price the lowest energy consumption the lowest total life cycle cost. "CATALOGUE" gives you access to the Grundfos product catalogue. "LIQUIDS" enables you to find pumps designed for aggressive, flammable or other special liquids. All the information you need in one place Downloads Performance curves, technical specifications, pictures, dimensional drawings, motor curves, wiring diagrams, spare parts, service kits, D drawings, documents, system parts. The Product Center displays any recent and saved items - including complete projects right on the main page. On the product pages, you can download installation and operating instructions, data booklets, service instructions, etc. in PDF format. 21

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