AmeriWater Heatsan 00HS208, Operation & Maintenance Manual

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98-0156 Rev G
During this stage the unit fills the tank with only the amount of
permeate needed for the number of machines programmed in by
the operator. This feature saves on power and water consumption.
The heaters then raise the temperature to the tank preheat
temperature and hold it until the timed Heatsan start period is
reached. The pre-heat stage reduces the risk of thermal shock to
pipework and reduces the time taken to achieve disinfection
temperature.
Heating (Heatsan Operation)
Once the Heatsan Start time is reached, hot water will be
directed into the loop. Ensure that no patients will be on line
when the “Heatsan Start” time is reached.
Once the pre-programmed “Heatsan Start” time has been reached
the Heatsan will isolate the RO from the distribution loop. The
Heatsan will then be automatically connected to the loop using the
motorized valves on the associated manifold. The internal pump
will circulate the preheated water around the distribution loop(s) to
be disinfected. The system will continue to heat the water until the
preset disinfection temperature is achieved. The circulation period
is set by the loop pre-heat value on the HMI, the factory default can
be found in Section 6.10.
Hold (Heatsan Operation)
After the “loop pre-heat” stage has timed out, the system is then
held at the disinfection temperature for the hold time. The default
hold time can be found in Section 6.10. The temperature is
maintained by switching on 1, 2, or 3 heaters, depending on the
selection of loop size in Section 6.6 Factory set-up.
Draw off period
The default time for this stage can be found in Section 6.10. The
minimum time is adjustable. The maximum time is calculated from
the times pre-programmed in by the user relating to the stop/start
times and the duration for the heat disinfection cycle on the
connected dialysis machines.
Caution