GE E-CELL STACK MK-2 Series - Page 28

rev.1.1 Page 11-26
Instruction 4: Peracetic Acid / Hydrogen Peroxide Solution Recirculation
(Mild Oxidizing Sanitization/Cleaning)
• Drain the cleaning skid and E-Cell skid.
• Make up 25 L per Stack of peracetic acid 0.04% / hydrogen peroxide 0.2% solution (0.25 L
of a commercial solution such as Minntec Minncare, Henkel-Ecolab Oxonia Active,
Diversey Divosan, or FMC Flocide, in 25 L of water.)
• Recirculate the peracetic acid / hydrogen peroxide solution through the Dilute,
Concentrate and Electrode loops for 2 hours.
o The E-Cell system will run with flow ranges as during normal operation, using the
Concentrate pump, but with no current applied to the Stacks.
Use: Peracetic acid 0.04% / hydrogen peroxide 0.2% performs similarly to halane using a
different chemical species. It should also be used only when necessary.
Instruction 5: Sodium Chloride Solution Recirculation
• Drain the cleaning skid and E-Cell skid.
• Make up 25 L per Stack of NaCl 5% solution.
• Recirculate the NaCl solution through the Dilute, Concentrate and Electrode loops for 10
minutes.
o The E-Cell system will run with flow ranges as during normal operation, using the
Concentrate pump, but with no current applied to the Stacks.
Use: To bring the Stack ion exchange resin into the exhausted (sodium and chloride) forms in
preparation for the next cleaning step or for regeneration. It also assists in cleaning by
displacing some contaminant ions from the resin.
Instruction 6: Water Rinse
• Drain the cleaning skid and E-Cell skid.
• Fill the cleaning tank with 25 L per Stack of RO (or better) quality water.
• Briefly recirculate the water and then drain the cleaning skid and E-Cell skid.
• Repeat the water rinse steps once.
Instruction 7: Final Water Rinse
• Drain the cleaning skid and E-Cell skid.
• Fill the cleaning tank with 25 L per Stack of RO (or better) quality water.
• Briefly recirculate the water and then drain the cleaning skid and E-Cell skid.
• Repeat the rinse steps until the Concentrate Outlet conductivity is < 50 uS/cm.