Table of Contents
Advertisement
®
IONPURE
2.
Fill the tank with the required amount of water.
3.
Mix the required amount of 36.5% (concentrated) HCl with the water in the tank.
Additional HCl may be required during the recirculation period.
4.
Open the pump suction and pump bypass valves completely.
5.
Start the cleaning pump.
6.
When chemicals are well mixed, gradually open the pump discharge valve while
closing the pump 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. Longer contact time
may be desirable in some instances. If longer contact time is desired, contact
Ionpure Technical Support.
8.
Monitor the pH of the solution during the recirculation period. If the pH begins to
rise, add more HCl to maintain a pH of approximately 0.5.
9.
Turn off the cleaning pump.
10.
Check pH. Neutralize if necessary. Drain the tank.
STEP 2: 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 2 (5% NaCl)
Water (RO permeate or CEDI product
Sodium chloride (NaCl)
1.
Remove product and reject outlet lines from the cleaning tank, and direct to
drain.
2.
Fill the tank with the water.
3.
Dissolve the sodium chloride (NaCl) in the water.
4.
Start the cleaning pump and flush through the module to drain for about three
minutes.
5.
Turn off the cleaning pump.
6.
Drain the tank.
STEP 3: Water Flush To Drain
Water flushes the cleaning solution and salt out of the system, and prepares the system
for return to operation.
1.
Close the pump discharge valve. Keep product and reject lines directed to drain
and disconnect the cleaning equipment from the module.
Page 23
VNX50HH-2 CEDI Modules
VNX50-HH
180 gal (675 liters)
75 lbs (34.2 kg)
IP-MAN-VNX50HH2
Advertisement
Table of Contents
Troubleshooting
