Operator`s manual

P/N 3027436 Rev. C

Regular Maintenance

WRO 300 H

Step 4 Confirm by pressing until light goes out. Indication

remains lighted.

3.4 Long Term Storage

If the WRO 300 H will not be used for an extended period of time, reg-

ular automated heat disinfection preset by the time channels, will main-

tain the microbiological quality in the WRO.

3.4.1 Preservation

If automated heat disinfection is not possible to perform when the

WRO 300 H is taken out of operation for an extended period of time, a

chemical preservation must be done. For example, perform preserva-

tion if electrical and water connections are disconnected.

3.4.1.1 Preservation agents

Use MEMSTOR and dissolve 100 ml in two liters of potable tap water.

Warm water (35-40°C) speeds up dissolution.

3.4.1.2 Preservation Procedure

Step 1 Follow the chemical disinfection procedure (refer to Chemical

Disinfection Procedure on page 19) Step 2 to 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 now sound and the indications and

will flash. Press , or acknowledge the alarm

and the alarm list will be unlocked.

Step 3 Switch off the WRO 300 H with the mains power switch

behind the detachable cover.

3.4.2 Rinse After Preservation

Step 1 Turn on the WRO 300 H with the mains power switch behind

the detachable cover.

Step 2 The indication and flashes and the display shows

404 RINSE REQUIRED.

Step 3 Press until light goes on to initiate rinse.

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