Ionpure LX Series CEDI Modules

Ionpure LX Series modules are industrial continuous electrodeionization (CEDI) modules that produce deionized water continuously, without downtime or chemical regeneration. The family has four variants: LX-Z for industrial deionized water, LX-X for high-purity applications, LX-EU for use in the European Union and LX-HI, which can be sanitized with hot water. As Ionpure’s OEM partner in Turkey, Mikron Proses (Üsküdar, Istanbul) supplies replacement LX-Z, LX-X, LX-EU and LX-HI modules and provides application consulting on module replacement, chemical cleaning (CIP) and commissioning.

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All variants need the same basic feed water (RO permeate with a conductivity equivalent below 40 µS/cm). For an overview of all Ionpure CEDI modules, see EDI / CEDI systems; for smaller laboratory-scale flows see the Ionpure MX series, and for larger single-module flows the Ionpure VNX series.

Ionpure LX sizes compared

Model size	Nominal flow, LX-X (m³/h)	Flow range, LX-X (m³/h)	Max. DC voltage, LX-Z / LX-X / LX-EU (1 – 6 A)	Max. DC voltage, LX-HI (1 – 10 A)
LXM04	0.45	0.22 – 0.68	27 VDC	50 VDC
LXM10	1.13	0.57 – 1.70	67 VDC	125 VDC
LXM18	2.04	1.02 – 3.06	120 VDC	225 VDC
LXM24	2.73	1.36 – 4.09	160 VDC	300 VDC
LXM30	3.40	1.70 – 5.11	200 VDC	375 VDC
LXM45	5.11	2.57 – 7.67	300 VDC	600 VDC

Note: Flow values are from the LX-X datasheet (ION-LXX-DS-0620); the LX-EU datasheet lists the same six sizes with the same flow values, while LX-Z and LX-HI flow values differ slightly (see the datasheets). LX-Z adds a seventh size, the LX8000Z (also listed as LXM55Z), for a flow of up to 10 m³/h and a maximum of 400 VDC at 1 – 6 A. DC voltage limits are from manual IP-MAN-LX-0426 (Table 2-2). The 600 V DC3 power supply can be used with all LX models; the DCR power supply can also be used but requires correctly sized isolation transformers.

LX-Z and LX-X: industrial series

LX-Z is designed for industrial deionized water applications such as boiler makeup water for power plants and water for hydrocarbon and chemical processing (HPI/CPI). Its seven models cover 0.22-10 m³/h per module at 0-400 VDC and 1.0-6.0 A DC, with 90-95% recovery and 90-99% silica removal depending on feed conditions. The improved chlorine tolerance allows up to 0.05 ppm total chlorine in the feed water.

LX-X produces deionized water for a wide range of high-purity applications, including boiler makeup water for power plants, pharmaceutical pure water and HPI/CPI. The LXM04X to LXM45X models cover 0.22-7.67 m³/h per module at 0-300 VDC and 1.0-6.0 A DC. Product water resistivity is above 17 MΩ·cm at minimum flow, above 15 MΩ·cm at nominal flow and above 7 MΩ·cm at maximum flow, based on the maximum feed conductivity equivalent of 40 µS/cm.

LX-EU: the variant for use in the European Union

LX-EU has the same size range as LX-X: 0.22-7.67 m³/h per module at 0-300 VDC and 1.0-6.0 A DC. It is intended for boiler makeup water, pharmaceutical pure water and HPI/CPI applications in the European Union. Its wetted materials comply with US FDA 21 CFR and with the EC directives on materials in contact with foodstuffs; the material approvals are listed in Appendix D of the LX manual.

LX-HI: hot water sanitization

LX-HI modules are sanitized with hot water at 85 °C ± 5 °C and a pressure of 2.0 bar, without a ramp up or down, and performance has been proven after more than 150 sanitizations. This applies mainly to pharmaceutical and biotechnology applications and others where chemical-free, instant hot water sanitization is wanted. LX-HI modules can also run continuously at up to 60 °C, which allows use at higher temperatures than typical CEDI, for example in steam generation in power applications. They operate at 0-600 VDC and 0-10 A DC, with product water conductivity below 0.1 µS/cm.

Power supply and module selection

All LX modules need an external DC power supply: see Ionpure DC3, DCR and G4 power supplies. The right LX variant depends on feed water quality, target flow, the region of use (LX-EU for the European Union) and the sanitization requirement (LX-HI). For help with the selection, see EDI system selection; for the technology itself, see what is electrodeionization (EDI).