WRO 300 H
38
Regular maintenance
HCEN12481-02/2012
3.4 Long time Storage
If the WRO 300 H will not be used for an extended period of
time, regular automated Heat disinfection preset by the time
channels, will maintain the microbiological quality in the WRO.
3.4.1
Preservation
If automated Heat disinfection
“Long time Storage” on page 38
is not possible to perform when the WRO 300 H is taken out of
operation for an extended period of time a chemical preserva-
tion has to be done. For example if electrical and water connec-
tions are disconnected.
Preservation agents
Use Memstor™ and dissolve 100 ml in two liters of potable tap
water. Warm water (35-40°C) speeds up dissolution.
Procedure
1
Follow the Chemical disinfection procedure (refer to
“Chemical disinfection procedure” on page 29
)
step 2
-
step 12
, but instead select
PRESERVATION
in the
CHEM
SELECT
menu.
2
After
step 12
: the display will show
404 RINSE
REQUIRED
and the buzzer will now sound and the indica-
tions
and
will flash. Press
,
or
acknowledge the alarm and the alarm list will be unlocked.
3
Switch off the WRO 300 H on the mains power switch
behind the detachable cover.
WARNING
Preservation agents may be toxic. Use safety glasses and gloves.
Refer to
manufacturer’s instructions
.
CAUTION
If the conductivity limit is not achieved, alarm
406 INSUFFICIENT
INTAKE
will appear and the Preservation procedure has to be
restarted.