9. Disinfection
• If the Instrument is powered up before the dwell time of
approximately 30 minutes (10 minutes for Dialox, 2 hours
for Formaldehyde) is complete, the Instrument will prompt
the operator about the incomplete dwell time then
automatically shut off.
• If the operator needs to use the Instrument, the operator
may start forced rinse and interrupt the chemical cycle.
After the required dwell, the Instrument prompts the operator to
make the necessary concentrate line connections, then rinses the
Instrument at a technician-set flow rate. (See 17.3.2.3.)
When the timed forced rinse is completed, the Instrument prompts
the operator to test for residual disinfectant.
When the residual disinfectant level is within the acceptable range
and the YES button touched, the Instrument automatically returns
to the Rinse Mode.
If the cycle is fully completed without interruption, the date and
time of last disinfection will be displayed in the chemical screen
message window.
In the event of a power failure the Instrument returns to the state it
was in before the power failure provided the power failure does not
last longer than 20 minutes.
9.4.4 Forced Rinse
The forced rinse time in minutes is dependent upon the
disinfectant, the technician-set forced rinse flow rate, and the
technician-set sampling location. (See Section 17, Customizing
and Configuration). These relationships are shown in Tables 9-6
and 9-7.
Table 9-6. Forced Rinse Time in Minutes for Sampling at the Drain Line
Formaldehyde
Flow
Rate Dialox Doxan
Amuchina &
Sodium
Hypochlorite
Actril
1.06% 2% 4%
300 72 83 27 52 29 39 46
400 54 62 25 39 27 37 43
500 43 50 23 31 25 35 40
600 36 42 21 26 23 33 37
700 31 36 19 22 21 31 34
800 27 31 17 20 19 29 31
900 24 28 15 17 17 27 28
1000 22 25 13 16 15 25 25
157-1278-916, Rev A 9-19
March 2004
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