59
98-0157 Rev K
4) With no HD machines running, check
loop return flow meter and compare to
screen reading
Loop Flow Rate
Low Warning
(SPH only)
Low Flow
Warning Set-
point
Exceeded
1) Check set-point
2) Check loop flowmeter reading on
Activity Details screen
3) Check wiring to flowmeter
4) With no HD machines running, check
loop return flow meter and compare to
screen reading
Heater Contactor
Fault Warning
Heater
Contactor
not closed
1) Check the controller to validate that
output Y4 has fired.
2) Check input X10
3) Check contactor for closure
1) Replace as necessary
Loop Return
Valve Position
Warning
Loop Return
Valve not
closed
1) Check the controller to validate that
output Y23 has fired.
2) Check input X22
3) Check valve for closure
1) Replace as necessary
Permeate Valve
Position Warning
Permeate
Valve not
closed
1) Check the controller to validate that
output Y14 has fired.
2) Check input X13
3) Check valve for closure
1) Replace as necessary
Chemical Clean
Overdue
Warning
Clean
Reminder
Set-point
1) review chemical clean clock setting
1) Conduct chemical clean
RO Heat
Disinfect 3 Failed
Attempts
Warning
Heat
Disinfect not
carried out
1) Review alarm log
2) Check RO Heat Disinfect is not
manually aborted.
1) Complete manual RO Heat
Disinfect
Pretreatment
Lockout Enabled
X24
1) Check input for illumination and
wiring
2) Check head on unit that is
backwashing
RO1 Quality
Over Range
Warning (DPH
only)
Stage 1
Permeate
Conductivity
Sensor
1) Check set-point
2) Check sensor and wiring
3) Check conductivity board
4) Check cables between conductivity
board
1) Check line cell
2) Perform chemical clean
Output Line Cell
Error Warning
(DPH only)
Stage 1
Permeate
Conductivity
Sensor
1) Check set-point
2) Check sensor and wiring
3) Check conductivity board
4) Check cables between conductivity
board
1) Check line cell
2) Perform chemical clean
Leak Detected
Warning
Conductivity
Board
1) Check connection between board and
PLC
2) Check conductivity sensors and wiring
3) Check plug-in locations
Temperature
Rise Warning
Break Tank
Temperature
Probe
1) After 30 min break tank temp is lower
than previous reading during RO Heat
Disinfect. Check sensor and wiring
2) Check sensor is inserted properly
Summary of Contents for MediQA MDP Series
Page 70: ...69 98 0157 Rev K 10 FLOW DIAGRAMS SPH UNITS ...
Page 71: ...70 98 0157 Rev K DPH UNITS ...
Page 72: ...71 98 0157 Rev K 11 WIRING SCHEMATIC SPH UNITS ...
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