AmeriWater 98-0177A User manual

OPERATION MANUAL FOR MRO CONTROLLER UPGRADE TO HEATSAN
98-0177A
UPGRADE AN MRO
FOR USE WITH HEATSAN
98-0177A
02/16/2015

OPERATING MANUAL FOR HEATSAN
98-0177A

OPERATION MANUAL FOR HEATSAN
98-0177A Page 3
CONTENTS PAGE
1 DOCUMENT HISTORY............................................................................ 1
2 CONTACT DETAILS................................................................................ 1
3 PREPARATION ....................................................................................... 2
4 CONTROLLER OPERATION................................................................... 4
5 CONTROLLER STANDARD SETPOINTS............................................... 8

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1 DOCUMENT HISTORY
Issue Date of Change Description of Change
A 17/02/15 Initial Release
2 CONTACT DETAILS
For all service, spares and consumables enquiries contact:
AmeriWater
1303 Stanley Ave
Dayton, Ohio 45404
Tel No. 800-535-5585
(Or your local authorized AmeriWater dealer)
Useful Telephone Nos.
Tel No………………………………Contact Name:……………………………….
Tel No………………………………Contact Name:……………………………….

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3 PREPARATION
Prepare to upgrade the existing MRO by first removing the device from power.
This needs to be done for the power to the control as well as the power to the
pump. Once the power has been removed, it is recommended to lock this out
until the upgrade is complete.
Loosen the 2 retaining screws on the front of the control panel to gain access
to the CPU.
Gently pry the CPU out of the socket, being careful not to break any of the
pins. Discard the old CPU.
The empty socket is shown above. Note the orientation of the notch at the
bottom of the socket. The replacement chip will have a notch to ensure that
the CPU is keyed properly to allow proper operation. FAILURE TO ORIENT
THESE IN THE SAME DIRECTION WILL LEAD TO DAMAGE TO THE
CONTROLLER.

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The picture above shows the notch on the CPU towards the right.
Verify that the pins on the replacement chip are aligned with the openings in
the socket and gently press this into place. Ensure that the chip is fully seated
in the socket.
Return all power to the device.
Move the write protect jumper to the “OFF” position.
Power on the RO and access the program screen labelled as “DIRECT
FEED”. Ensure that this has a value of “1” in the field and press “ENTER”.
Replace the write protect jumper in the “ON” position and close the access
door.
Toggle the RO to operate and verify that the unit operates as intended.

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4 CONTROLLER OPERATION
The RO will operate largely as indicated in the operation and maintenance
manual that was provided with the device. There will be an additional setting
available once the CPU is installed. See Direct Feed below.
Operating Status Messages
The operating status of the unit is shown on the top line of the display. The
following list describes the items shown for the operating status.
STANDBY - The unit is in the STANDBY mode.
DELAY 99 - The unit is in the RO start delay. The number is the seconds
remaining before the RO pump starts.
OPERATING - The RO unit is operating.
TANK FULL - The unit is shut down due to a tank full condition.
TANK FULL 99 - The unit is shut down due to a tank full condition. If the
number is blinking, the tank full high switch has cleared, but the tank full low
switch is still active. If the number is on steady, both tank level switches have
cleared and the delay is counting down.
PRETREAT - The unit is shut down due to a pretreat lockout condition.
PRESS FAULT - The unit is shut down due to a pressure fault condition.
MEMB FLUSH 99 – Membrane Flush is active. The number is the minutes
remaining in the flush cycle.
HEATSAN OPERATION – This message is displayed when the unit is paired
with a Heatsan disinfection system and set to run when water is called for by
the Heatsan disinfection system.

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Conductivity
The Conductivity is shown on the top line after the unit operating status. When
the unit is in STANDBY, because of a shut down condition, the reading is
replaced with ‘----’. If the reading is over range, the reading is shown as ‘^^^^’
when in the OPERATE mode.
Operating Hours
The current operating hours are shown on the bottom line.
Temperature
The current water temperature is shown on the bottom line to the right of
operating hours. When the unit is in STANDBY due to a shut down condition,
the reading is replaced with ‘---‘.
Warning Messages
Warning messages are also shown on the second line. If any warnings are
active, the active warnings will alternate with the normal displays for the
bottom line. The following lists the warning messages.
HI COND - The Conductivity reading has exceeded the programmed limit.
Tank Full Operation
The unit can be operated with 1 or 2 level switches. With 1 level switch, the
switch is connected to the tank full high input. When this switch has been
active for 5 seconds, the unit will shut down on tank full. TANK FULL will show
on the display. When the tank full condition clears, the display will show TANK
FULL 99. The number is the tank full restart time and the unit will restart when
this delay times out.
For 2 level switch operation, the upper switch is connected to the tank full high
input and the lower switch is connected to the tank full low input. When both
switches are “open”, the MRO unit will start. The MRO unit will continue to run
when the water level rises, and while the lower switch becomes active
(closed). When the upper switch becomes active (closes), after the 5 second
delay, the MRO unit will shut down. TANK FULL will show on the display.
When the tank level drops and the upper level switch clears, the display will
show TANK FULL 99 and the MRO unit will remain off. The number is the
tank full restart time and the number will blink until the lower level switch
clears (opens). When the lower level switch clears (opens), the number will
remain steady and the MRO will restart when the delay times out.

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Tank Full Restart
The tank full restart is the delay before the MRO unit starts when a tank full
condition clears. This delay can be in minutes or in seconds. The TF Restart
Setpoint selects seconds or minutes.
Tank Full Override
A timed tank full override can be initiated when the MRO unit is shut down due
to a tank full condition. Pressing the Alarm Silence/Reset key for 3 seconds
during a tank full condition will enable the tank full override. The RO will start
and TF OVERRIDE 9 will show on the display. The number is the minutes
remaining in the override timer. When the override times out, the unit will
return to the tank full shut down condition. The TANK FULL OVERRIDE will
divert all water to the drain, whether the water quality is good or bad coming
into the RO.
Pressure Fault
If the pressure fault input becomes active (closes) and stays active for the
delay programmed in the PF Delay Setpoint, the unit will shut down for a
pressure fault. The display will show PRESS FAULT, the alarm lamp will flash
and the audible alarm will sound. The pressure fault can be cleared by
pressing the Alarm Silence/Reset key twice.
Auto Reset
If a pressure fault shut down occurs and the Auto Reset Setpoint is
programmed to 0, the unit will remain shut down until manually reset. If the
Auto Reset Setpoint is programmed to a value greater than 0, the unit will
automatically clear the pressure fault and attempt to restart after this delay
times out.
Alarm Silence
When a shut down occurs that causes the audible alarm to sound, the alarm
can be silenced by pressing the Alarm Silence/Reset key once. The alarm will
remain silenced for 3 minutes [180 seconds (AAMI RD62 standard)] when the
Alarm Silence Setpoint is programmed to the factory default 3. If the Alarm
Silence Setpoint is programmed to a value other than 3, the alarm will
resound after this delay times out. Pressing the Alarm Silence/Reset key will
silence the alarm and reset this delay.

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Pretreat
If the pretreat input becomes active (closes) and stays active for 2 seconds,
the unit will shut down in a pretreat lockout condition. PRETREAT will show
on the display and the unit will remain shut down as long as the pretreat input
is active.
High Conductivity
If the Conductivity reading exceeds the limit programmed the Cond Limit
Setpoint for the delay programmed in the Cond Delay Setpoint, the alarm
lamp will light and the HI COND warning message will show on the display.
This warning will clear when the Conductivity drops below the Setpoint.
When the High Conductivity warning message is active, the MRO will divert
the PRODUCT WATER to drain (through the Reject hose), until the Product
water conductivity goes back into the acceptable quality range.
Direct Feed
This is the setting that installation of this new CPU enables. Setting this to “1”
allows for pairing with the Heatsan disinfection system. This changes the
operation of the “tank full high” and “tank full low” inputs. “Tank full high” is
used to indicate that the Heatsan is in operation while “tank full low” is used to
turn the RO on and off when water is required. Changing this set point to “0”
allows for the RO to operate as if the CPU was not installed.

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5 CONTROLLER STANDARD SETPOINTS
SETPOINT DESCRIPTION RANGE FACTORY SETTING
%Rej The 2nd TDS/Conductivity cell is used to
monitor feed water. Programming this
setpoint to 1 allows the % rejection to be
displayed.
0-1 1
C2 Limit When this value is met or exceeded, the
alarm lamp will light and high TDS/Cond will
show on the display. To disable, set to 0.
0-1 1
C2 Range^^ Selects the range of inlet TDS/Conductivity
monitor; 0 = 50, 1 = 100, 2= 250, 3= 500,
4 = 1000, 5 = 2500, 6 = 5000.
0-6 4
Direct Feed This will change the behaviour of the device
to allow it to be paired with a Heatsan
disinfection system. 1 = direct feed with
heatsan, 2 = standard RO.
0-1 0
TDS/Cond
Range^^ Selects the range of TDS/Conductivity monitor; 0 = 50, 1 = 100, 2= 250, 3= 500,
4 = 1000, 5 = 2500, 6 = 5000.
0-6 1
TDS/Cond
UOM^^ Selects display of water quality in either µS or PPM. 0 = µS, 1 = PPM 0-1 0
Switch Select Selects if the switch inputs are normally open
or normally closed. 0-32 0
Temp UOM Selects display of the temperature in either
°F or °C. 0 = °F, 1 = °C. 0-1 0
Temp Offset Allows adjustment of the temperature
reading by +/- 5 degrees. +/- 5 0
Current Hours Current number of hours of RO system
operation. 0-6500 hours 0
Maximum Hours If the current operating hours exceed this
limit, the operating hours warning will occur.
To disable, set to 0.
0-65000
hours 0
Flush Mode Selects if the inlet and RO pump relays
operate during flush. 1-4 0
Flush Interval The interval between flush cycles. Only valid
with operation hour, elapsed time or off flush
cycles.
0-99 minutes 0
Flush Time The length of time a membrane flush cycle
will last when flush is active. 0-99 minutes 0
Flush Type Selects the type of flush. Set to 0 to disable. 0-8 0
Tank Lo Restart Not used. N/A N/A
^^Changing any setpoints indicated by this symbol will require the unit to be
recalibrated and may require the range components be changed.

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SETPOINT
DESCRIPTION
RANGE
FACTORY
SETTING
TFO Time The amount of time that a tank full override
lasts. 0-15 minutes 3
TF Restart Selects whether the tank full restart delay is
in seconds or minutes. 0= seconds,
1=minutes.
0-1 0
TF Restart Delay When a tank full condition clears, the system
will restart after this delay. 0-99 seconds /
minutes
5
Alarm Silence If the audible alarm is silenced, after this
delay, the alarm will resound. If this is set to
0, the alarm will remain silenced.
0-99 minutes 3
Auto Reset When a pressure fault shut down is active,
the system will attempt to restart after this
delay. If set to 0, the system must be
manually reset.
0-99 minutes 0
Press Fault
Delay The time a pressure fault must be active before a pressure fault shut down occurs. 0-99 seconds 10
RO Start Delay The amount of time between the inlet valve
opening and the RO pump start. 0-99 seconds 10
TDS/Cond Delay When the limit Setpoint is exceeded, no
alarm will be given until this time has expired. 0-999 seconds 10
TDS/Cond Limit When this value is met or exceeded, the
alarm lamp wil light and high TDS/Cond will
show on the display. To disable, set to 0.
0-
999
µS or PPM* Based on Water
analysis
* µS = microsiemens; PPM = Parts Per Million