Arena Service Manual
It cycles the bypass valve into bypass for 5 seconds every
minute.
It cycles dialysate filter purge valve #2 if Dialysate Filter
hardware is installed (refer to Section 24).
It disables the level control of the incoming water valve.
It energizes the recirculation valve.
9.5.4 Forced Rinse
After infusion of single pass disinfectants or after the dwell time
for dwell disinfectants, the Instrument enters a Forced Rinse. The
rinse time will be as specified in Table 9-6 or Table 9-7. The
forced rinse time may be extended. See Section 17, Customizing
and Configuration, for details. Perform a test to determine that the
disinfectant is rinsed. If the flow path is free of chemical
disinfectant, the Forced Rinse can be ended and the Instrument
returned to Rinse Mode.
WARNING
Make sure that the determination test shows a
sufficiently low level of disinfectant in the rinse solution
before dialysis. Refer to the attending physician’s
directives for the acceptable limit and the AAMI
standard for hemodialysis.
To ensure that the disinfectant level in the dialyzer
circuit is below a level acceptable for patient safety,
sample the rinse solution in the dialysate lines.
Make sure that the determination test is specific for the
disinfectant used.
9.5.5 Troubleshooting Chemical Infusion Problems
If the chemical disinfection fails because the conductivity
threshold is not reached, perform the following.
1. Verify that the chemical being used to disinfect contains the
correct amount of active ingredient.
2. Use a reference meter to monitor the temperature and
conductivity during chemical infusion. Calibrate the
temperature and conductivity as required.
9-26 157-1278-916, Rev A
March 2004
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