AmeriWater MediQA, Diagnostics Manual

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098-0010 Rev C
told to close during RO Heat
Disinfect or Chemical clean
Y23 on, X22 off
Permeate
Valve Position
Alarm Permeate M. Valve being told to
open to loop during RO Heat
Disinfection or Chemical Clean 1) Permeate M. Valve is out of position
2) Check if Heatsan is doing Heat
Disinfection while MediQA is doing Heat
Disinfection or Chem Clean
3) Limit switch failure 1) Abort one of the cycles
2) Change disinfection schedule so it
doesn’t occur simultaneously
Heater Over
Temperature
Alarm Thermostat Over Temperature
signal from Heater
X23 off 1) Check thermostat set-point inside
heater control box 1) Adjustment thermostat to 200
Feed Water
Alarm Base Level Tank Float Switch
opened during operation
X3 off 1) Check Tank level is actually empty
2) Check feed water supply and valves
3) Check tank drain valve is closed
4) Verify inlet solenoid valve is working
5) Check strength of flow
6) Check if diffuser is plugged 1) Open closed valve on feed
2) Close tank drain valve
3) Replace inlet solenoid
4) Address feed water issue
5) Remove and rinse diffuser
Output Quality
Rinse Alarm Output Quality exceeds the
Output Quality Alarm Set-point
after the Auto Rinse Max time is
met 1) Check Auto Rinse Max and Output
Quality Alarm set-points
2) Check Output Conductivity value
3) Loop supply quality over range (999
displayed on screen)
4) Loop supply line cell error 1) Raise Auto Rinse Max
2) Profile membranes
3) Check line cell
4) Perform chemical clean
Output Flow
Rate High
Alarm Output flow detected above High
Flow Alarm set-point 1) Check Permeate flow at time of alarm
2) Check set-point High Flow Alarm
3) Check calibration of Delivery Flowmeter 1) Adjust set-point to default
Output Flow
Rate Low
Alarm Output flow detected lower than
Low Flow Alarm set-point 1) Check Permeate flow at time of alarm
2) Check set-point Low Flow Alarm
3) Check calibration of Delivery Flowmeter 1) Adjust set-point to default
2) Address flow blockage issue
Heatsan Unit -
Water Loss
Alarm
Detected Heatsan system detected water
loss and is in alarm condition,
locking out the RO
X25 on See Heatsan Diagnostic Alarm
1) Burst pipe or leak in the loop
2) Dialysis machine coming on early
3) Sample port open in loop 1) Fix leak
2) Adjust dialysis schedule
3) Close port