Operator`s manual

WRO 300

P/N 3027435 Rev. C

Regular Maintenance

3.3.1.2 Preservation Procedure

Step 1 Follow the chemical disinfection procedure (refer to Chemical

Disinfection on page 17) Step 2 through Step 12, but instead

select MEMSTOR in the CHEM SELECT menu.

Step 2 After Step 12: the display will show 404 RINSE REQUIRED

and the buzzer will sounds and the indications and

flash. Press , or to acknowledge the alarm — the

alarm list unlocks.

Step 3 Turn off the WRO 300 using the mains power switch behind

the detachable cover.

3.3.2 Rinse After Preservation

Step 1 Turn on the WRO 300 using the mains power switch behind

the detachable cover.

Step 2 The indicators and flash and the display shows 404

RINSE REQUIRED.

Step 3 Press until light goes on to initiate rinse.

Step 4 When the rinse program is complete, the display will show

PERFORM RESIDUAL TEST. The indication remains

lighted and the flashes.

3.3.3 Check for Complete Rinse-out

The required rinse program in the WRO has been designed and vali-

dated to ensure complete rinse-out of the preservation.

Step 1 Press until light goes on to start the WRO—

indicator lights and flashes.

Step 2 Let the WRO run in normal operation for at least 5 minutes.

Then press or to show the conductivity value in the

display (within 15 seconds the display returns to PERFORM

RESIDUAL TEST). Check and verify that the product water

conductivity remains stable and constant.

CAUTION

If the conductivity limit is not achieved, alarm 406 INSUFFI-

CIENT INTAKE will appear and the Preservation procedure

has to be restarted.

RINSE

hh:mm