Testing; Cleaning - Culligan G1 Series Installation, Operation And Service Instructions

4. Allow the unit to run for at least 30 minutes. Check the product water until the pH for the concentrate and prod-
uct remains stable for five (5) minutes and the TDS is greater than 95 percent rejection.
5. Choose GO TO OFFLINE from the main menu.
6. Connect the concentrate tubing from the membrane to the motor panel.
7. Reconnect the product tubing to the service line. Install the new sediment filter.
8. Change the pressure switch setting to NORMALLY OPEN.
The system is now ready for use.

Testing

If the product flow calculations or NFLOW values show a loss of flow, or the product quality has become poor, one or
more elements will require cleaning or replacement. Because poor performance might be due to only one element, test
the product flow and quality from individual housings.
To test each element:
1. Disconnect the product tubing from the housing to be tested.
2. Choose GO TO RUNNING from the main menu.
3. Measure the product flow and TDS from the test element.
4. Choose GO TO OFFLINE from the main menu.
5. Reinstall the tubing.
6. Continue testing the elements as needed to determine which should be cleaned or replaced.

Cleaning

During the operation of any reverse osmosis system, dissolved solids and particulate matter are concentrated inside the
module element. If these contaminants are present in relatively low concentrations, the concentrate flow from the system
flushes them to drain. In most cases, water pretreatment such as filters and softeners will prevent the deposit of these
contaminants.
When these deposits occur, there will be a decrease in the product water flow and quality. When these symptoms be-
come excessive, the modules must be cleaned before they are permanently damaged.
To determine when cleaning is needed, compare the current system performance to the performance of the system when
the reverse osmosis elements were new. Use Table 7 to obtain data and compare the performance of the system, "new"
and "now" (record the data in pencil).
Test Data
New
Flow (gpm)
TDS (ppm)
Pressure (psi)
Temp. (°F)
NOTICE If new data is not available, use the specifications listed earlier in these instructions. However,
keep in mind that the new elements may have exceeded these specifications, so performance may
have decreased even if the unit still exceeds specifications.
In addition to differences in product flow and quality (TDS), determine whether there were any changes in concentrate wa-
ter flow, feed water TDS, feed water temperature and feed or product pressures. Changes in these values provide clues
to indicate the cause of any problems with the product water.
Cat. No. 01021713
Feed
Now New
Table 7. System performance—new vs. present.
Product
Now
Concentrate
New Now
Service and Maintenance 71