AmeriWater 000-HS120, Operation & Maintenance Manual

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098-0007 Rev B
7.3 Controller Inputs/Outputs
Inputs
High Level Float Switch (I4)
1 Normally-Closed (Open on rise)
Low Level Float Switch (I3) 1 Normally Open (Close on rise)
Return Flowmeter (I0) Pulse style flow meter (22,000 pulse/L, 83,200 Pulse/Gal)
Thermocouple (+I8, -I7) K-type thermocouple (-454 to 2501 °F)
Controller Power 24 VDC, 7 Watts
Output Relays (8A max usage, or 3A per relay output)
Tank Divert Solenoid (SV1,O0)
120 VAC, 16 W
Tank Drain Solenoid Valve (SV2,
O1) 120 VAC, 16 W
Return to Drain Solenoid Valve
(SV3, O2)
120 VAC, 16 W
Inlet Solenoid Valve (SV4, O3) 120 VAC, 16 W
Buzzer (O5) 24 VDC
Pump (O6) 24 VDC to SSR2
Heater (O7) 24 VDC to SSR1
7.4 Modes of Operation
7.4.1 Standby
The default mode of operation for the Centurion Plus Heat disinfection device is Standby. In standby
mode, the device shall remain idle. No system outputs will be active during this mode. Standby mode
shall be activated upon system start-up, following a successful disinfection cycle, or after an alarm
condition has been activated during disinfection.
WARNING: All patients should be offline prior to beginning the preheat cycle. The RO water supply for
the hemodialysis machine will be interrupted for approximately 10 minutes at the beginning of
the cycle as the storage tank fills.
7.4.2 Storage Mode
Storage mode can be enabled via the device settings. Enabling storage mode will allow the device to
begin heating water at a scheduled time. The display will provide the user with a message stating the
time when hot water will be available for the HD machine to draw off for disinfection of the feed water
hose. The schedule is based on 1 disinfection per week. Disinfection can be set on any day of the week.
Setting the disinfection time to 00:00 on any day of the days of operation will disable disinfection on that
day.