Arena Service Manual
9.5.2 Chemical Infusion
Chemical infusion can start after completion of a forced rinse or if
the conductivity is equal or less than the prerinse conductivity
threshold. The Instrument infuses the disinfectants according to
the parameters shown in Table 9-8. During infusion “Chem
Disinfect: Infusion” will be displayed in the instruction window.
Table 9-8. Disinfectant Infusion Parameters
Disinfectant
Name
Disinfec.
Type
Infusion
Ratio
“A” Pump
Alarm
Trigger
Time
(min)
Conductivity
Threshold
(mS/cm)
Infusion
Time @
500
mL/min
Recirc.
Time
(min)
Dwell
Time
Actril Dwell 9:1 8 0.7 8 min 5 30 min
Amuchina Single
Pass
34:1 7 7 15 min
N/A N/A
Dialox Dwell 34:1 8 0.4 8 min 5 10 min
Doxan Dwell 9:1 8 0.4 8 min 5 30 min
Formaldehyde
1.06%
Dwell 34:1 8 N/A 8 min 5 2 hours
Formaldehyde
2%
Dwell 35:1.89 8 N/A 8 min 5 2 hours
Formaldehyde
4%
Dwell 35:3.77 8 N/A 8 min 5 2 hours
Sodium
Hypochlorite
1.75%
Single
Pass
34:1 7 1.6 15 min N/A N/A
Sodium
Hypochlorite
5.25%
Single
Pass
34:1 7 4.8 15 min N/A N/A
After the infusion time given in Table 9-8, the conductivity is
measured. The single pass chemical infusion alarm trigger change
time can be adjusted to between 2 and 15 minutes but only by
changing a calibration constant (see Section 5.4.7). If the
conductivity has not increased above the level measured at the start
of infusion by an amount equal to the conductivity threshold,
disinfection fails and the Instrument creates an alarm to notify the
operator that the disinfection cycle was not completed. The
operator is alerted with the message “Infusion Failed – Check
Disinfectant”. The operator can correct the problem and press
“Restart Infusion” or start Forced Rinse.
If a dwell disinfectant is in use, the Instrument will soft power off
for the prescribed time, after infusing of the disinfectant.
When an infusion cycle is initiated the Instrument will perform the
following actions:
9-24 157-1278-916, Rev A
March 2004
To Next Page
Loading...
