IONPURE
®
VNX50HH-2 CEDI Modules
Page 29
IP-MAN-VNX50HH2
2. Start the cleaning pump and flush to drain for about three minutes.
3. Turn off the cleaning pump.
4. Drain the tank.
STEP 3: Sanitization Solution Recirculation and Soak
This step sanitizes the system.
Chemicals needed for Step 3:
VNX50-HH
Water (RO permeate or CEDI product)
99 gal (375 liters)
Peracetic Acid Solution
*
0.99 gal (3.75 liters)
* Quantity based on a peracetic acid solution of 20% Hydrogen Peroxide with 4%
peracetic acid. Do not exceed a final concentration of 0.2% peroxide and 0.04%
peracetic acid
1.
Close the cleaning pump discharge valve.
2.
Connect the product and reject lines to the cleaning tank.
3.
Fill the tank with the required amount of water.
4.
Mix the peracetic acid solution into the tank.
5.
Open the cleaning pump suction valve and bypass valve completely.
6.
Start the cleaning pump. When chemicals are well mixed, gradually open the
cleaning pump discharge valve while closing the bypass valve to adjust the
product and reject flow rates to the values given in Section 6.5.
7.
Recirculate the solution through the module for 30 minutes.
8.
Turn off the cleaning pump.
9.
Allow the system to soak in the peracetic acid solution for up to 90 minutes.
10.
Check pH. Neutralize if necessary. Drain the tank.
STEP 4: Salt Flush To Drain
This salt flush rinses the cleaning solution from the module, and returns the ion exchange
resin to the sodium and chloride forms.
Chemicals needed for Step 4
(5%NaCl):
VNX50-HH
Water (RO permeate or CEDI
product)
180 gal (675 liters)
Sodium chloride (NaCl)
75 lbs (34.2 kg)
1. Remove product and reject outlet lines from the cleaning tank, and direct to drain.
2. Fill the tank with the water.
