48
Culligan® Premier Series Automatic Deionizer
48
Cat. No. 01024000
Preventive Maintenance
If quality fails to return at the end of the normal regeneration, the resin may be beyond salvage or it may be past its nor-
mal service life of three to five years. In either case, the resin should be replaced. A sample of the resin may be sent to
Culligan for analysis, but there is a fee for this service.
Deionizer Systems must be properly maintained in order to provide years of trouble free operation. Using the proper
chemicals and maintaining the components that come in contact with the chemicals is a requirement. Below is a list of
items that should be checked and/or replaced periodically.
1. Chemicals—check each shipment of chemicals.
a. Verify correct grade and quality actually furnished. (See
details)
•
Hydrochloric Acid: 20°Be - Food Grade or Technical Grade - White
•
Caustic Soda (Sodium Hydroxide) (NaOH): 50% - Mercury or Rayon Grade (Mercury Grade is
Preferred)
b. Verify temperature: keep chemicals from freezing.
2. Utilities – Check periodically
a. Water
•
TDS—has it remained constant?
•
Pressure (psig)—is it always adequate, even at maximum plant loads?
b. Air
•
Air filter—replace as needed.
•
Pressure (psig)—is it always adequate, even at maximum plant loads?
•
Drain moisture from the air inlet regulator filter every 30 days.
3. Rubber parts in valves
a. Replace regenerant chemical lines on a yearly basis.
b. Replace diaphragms and other rubber parts as needed.
4. Resin Inspection should be completed annually.
a. Freeboard space—top of tank down to top of resin. An increase in freeboard means resin loss.
•
Loss may be due to natural attrition.
•
Loss may be due to excessive backwash rate.
•
Loss may be due to excessive backwash expansion caused by extremely cold water.
•
Loss may be due to air accumulation in the top of the pressure tank.
•
Loss may be due to a broken or damaged distributor.
b. Resin Quality
•
Send samples for a complete lab analysis—nominal charge.
A one pint core sample of each, cation and anion, is required.
Testing Hardness of Decationized Water
Decationized water is acidic and must be neutralized before an accurate hardness test can be performed. Draw a litre of
decationized water from the cation outlet test cock. Use an eyedropper and add 1 drop of caustic soda at a time until a pH
of 7.0 is reached. Take small samples from the pint to perform the pH test. Do not use pH chemicals or litmus paper in the
pint sample, they will contaminate the sample and the reading will not be accurate. Once the pH is corrected, a sample
can be removed from the litre and the hardness tested. Follow the instructions supplied with the hardness test kit.