Thermal Care SF Series Instruction Manual
Page 1
Table of Contents
I. Safety Consideraons..…………………………………….. 1
II. Descripon………………...…...………………...…………… 1
IV. Operaon……………………………………………...………. 3
V. Menu Screens……………..…..……………………………… 4
VI. Layout & I/O Configuraon….………….…………….. 8
IX. Limited Warranty & Contact Info…………………… 10
III. System Overview……………………………………………. 2
VII. Electrical Connecons…………………………………… 8
VIII. Electrical Schemac……………………………………… 9
I. SAFETY CONSIDERATIONS
GENERAL WARNING
Ensure all appropriate personnel read owner’s manual prior to installaon and/or operaon of controller. Failure to
comply with instrucons and safety precauons could lead to personal injury or product damage. Please call
and ask to speak with one of our customer service representaves if there are any quesons.
CAUTION
Disconnect controller from power source before servicing or removing face plate.
II. DESCRIPTION
The PDA/ATF‐MAX is a dual purpose controller for both monitoring the pressure differenal with alarm indicator and automacally controlling
the flush valve of a SF Series strainer.
OWNER’S MANUAL
Page 2
III. SYSTEM OVERVIEW
The PDA/ATF‐MAX system consists of the following primary components:
The controller interface contains the Audio‐Visual Alarm, Controller screen and Keypad interface as shown. The clear cover provides
protecon for the controller and can be opened with the two latches on the side of the controller housing to access the keypad.
A) PDA/ATF‐MAX controller
B) Power supply
C) Transducer / Wiring assembly
D) Mounng bracket
E) Flush valve assembly
A) Audio‐Visual Alarm
B) Controller Screen
C) Keypad
Page 3
Startup
1) Plug in the power plug into a standard 115VAC wall outlet
2) Upon power‐up, the company informaon screen will be shown for 15 seconds.
3) Aer 15 seconds, the screen will change to the manifold pressure screen and will begin monitoring differenal pressure across
the strainer.
AutomacFlushing
Under normal operaon, a med flush will be iniated on a periodic schedule defined by the PDA/ATF‐MAX programmed seng.
(every 24 hours per factory seng).
In addion, a med flush will be iniated when the differenal pressure reaches the setpoint defined by the PDA/ATF‐MAX
sengs.
See the MENU SCREENS secon for informaon on changing factory sengs.
ConsecuveFlushAlarm
If three consecuve flushing operaons are detected by the PDA/ATF‐MAX, a consecuve flush alarm will be triggered and no addi‐
onal flush cycles will be iniated unl the alarm is cleared.
To reset the Consecuve Flush Alarm, first, correct the cause of the alarm, then push the red ESC buon on the controller while a
Status screen is displayed. The oponal Customer’s Remote Reset input, Input iB, allows for a remote reset of the Consecuve
Flush Alarm.
ScrollingthroughMenuScreens
The PDA/ATF‐MAX allows the operator to scroll through a selecon of menu
screens by pressing the Aor Bbuons. Press Ato scroll backward to the pre‐
vious menu or press Bto scroll forward to the next menu. The LCD backlight
will automacally turn on for 5 minutes when a buon is pressed, thus allow‐
ing the operator to easily view the menus in low light situaons.
ChangingParameterValues
To change an adjustable value, first scroll to the appropriate menu screen using the A or B buon. Follow the direcons below to
modify the value.
1) The current selected value will show flashing blocks. Use the + or ‐keys to select another value if desired.
2) Press OK on the selected value. The value will change from flashing blocks to flashing numbers. Flashing blocks indicate the
value is locked into memory. Flashing numbers indicates the value is unlocked and can be changed.
3) Press the + or ‐buons to change the value. Holding the + or ‐buon will allow the value to increase at a faster rate aer the
first 10 increments have passed.
4) When finished, press OK to save the change to memory. The value will return to flashing blocks.
REFER TO THE MENU SCREENS SECTION FOR DETAILED INFORMATION ON EACH SCREEN AND/OR PARAMETER.
IV. OPERATION
Page 4
V. MENU SCREENS
Miller‐LeamanInc.
800‐881‐0320
PowerUpScreen
The Power Up screen displays the company informaon. Each me the
PDA/ATF‐MAX is plugged in, or when power is returned aer a loss, this
screen will be displayed for 15 seconds. The Power Up screen can be
viewed by unplugging the PDA/ATF‐MAX’s power, then plugging it back
on again.
ManifoldPressureScreen:
Aer 15 seconds, the Power Up screen will be changed to the Manifold
Pressure screen. The Manifold Pressure Screen displays the pressure in
PSI for inlet manifold, outlet manifold, and the calculated differenal
pressure between the inlet and outlet manifolds.
ManifoldPressure
Inlet:0034.0
Outlet:0032.0
PSID:0002.0
TheStatusScreens
The status screens provide system feedback, allowing the operator to monitor when and how the Flush cycle is occurring. A Flush
cycle can be started manually, automacally via the Flush Interval Timer or the Pressure Differenal Transducers (PSID), or remote‐
ly by oponal Customer Input Signal.
The current status of the controller is displayed as follows: Status:AUTO
PSID:0003.0
PressOKtoStart
AFlushCycle
Status:AUTO
>>HighPSID<<
PressOKtoStart
AFlushCycle
Status: AUTO
Indicates that the Inlet Pressure is not Low, and the controller is waing
for a Flush cycle to begin. The system is assumed to be in normal filtra‐
on mode and flowing water. The Flush interval mer is running. The
controller displays Status: AUTO when the Inlet Pressure in not low and
a Flush cycle has not begun. A Flush can occur from the Timer, a high
pressure differenal via the Pressure Transducers, indicated as >> High
PSID << on the display, manually by the operator by pressing the green
OK buon on the controller, or by the Customer Input Signal.
Status:ON
FlushCycle
PressESCtoStop
Status:AUTO
PSID:0003.2
PressOKtoStart
AFlushCycle
Status: ON
Indicates that the system is in a Flush cycle, iniated either by the Oper‐
ator, by the Flush Interval Timer, the Pressure Transducers, or by the
Customer Input Signal. The controller will stop displaying the PSID val‐
ue, but will instead indicate Flush Cycle.
The Flush Valve is opened, and the Alarm Light/Sounder output is flash‐
ing. This output flashes the Light and Sounder throughout the enre
Flush cycle. The Flush Duraon is nominally set for 8 seconds. The Flush
Duraon me is adjustable ‐see Setup screen for informaon.
Aer this Flush duraon me, the Flush Cycle is complete. The Open
Flush Valve Output will be turned off, the Alarm Light/Sounder will be
turned off, and the Status Screen will display Status: AUTO.
Page 5
V. MENU SCREENS (CONT.)
Status:ON
>ConsecFlushAlarm<
PressESCtoStop
Status ‐Consecuve Flush Alarm
On any of the status screens, a Consecuve Flush Alarm screen can be
acvated. The second line down will be alternately flashing
>ConsecFlushAlarm< and whatever was on line 2 before the system
alarm occurred.
A Consecuve Flush Alarm occurs when the Flush cycle has been iniat‐
ed three mes in a row by the Pressure Transducers (PSID). Output #4
will be turned ON, which will then energize Relay 1 (R‐1). Relay 1 pro‐
vides a Dry Contact signal for the Customer’s Consecuve Flush Alarm
monitoring.
The Consecuve Flush Alarm will also cause the Alarm Light/Sounder to
change from flashing to steady ON. The Consecuve Flush Alarm will
also disable any addional Flush Cycles from occurring.
Status:OFF
PSID:00.0
InletPressureLow
PSID:00.0
Status:OFF
>>HighPSID<<
Status: OFF
The Inlet Pressure transducer is monitored to sense sufficient Inlet
Pressure and allow Timed Flushes, and Differenal Pressure Flushing.
When the inlet pressure is sensed as lower than the Setpoint, the
Flush Interval mer will be paused, and a med Flush will not occur.
Differenal Pressure Flushing will also be inhibited. DP sensing will
connue, and the Status Screen will display >> High PSID << on the
second line. When the Inlet Pressure is sensed as low, the top line of
the Status Screen will display Status: OFF alternang with Inlet Pres‐
sure Low.
Page 6
FlushInterval&PSIDSetpointScreen
The user‐defined interval at which the system will iniate an automac
Flush cycle. The Flush Interval mer resets aer any Flush cycle occurs
(by mer, PD Transducers, operator, or Customer Input Signal). This
value is adjustable from 1 minute to 1000 hrs. Seng both values to
zero will turn offthe Flush mer. It is recommended that the operator
adjust the Flush interval mer so that the system Flushes by me be‐
fore the pressure differenal set‐point is reached. Factory Preset value
is 24 Hours.
The Pressure Differenal seng in PSI, which when compared to the
calculated Differenal Pressure from the Inlet and Outlet pressure
transducers, will cause a Flush cycle to begin when exceeded. The rec‐
ommended PD setpoint is 1‐2 PSID above the “clean” PSID reading at
the systems MAXIMUM flow rate. Seng this PSID Setpoint at low flow
may result in connuous Flushing at higher flow rates, since the Pres‐
sure Differenal increases with flow rate. This value is adjustable from 1
to 30 PSID. Factory preset is 7 PSID.
FlushDuraonScreen
The me alloed for the Flush Valve to be open. This me should be set
according to the type of filter and the nature of the material being fil‐
tered. This value is adjustable from 5 to 300 seconds. Factory Preset
value is 8 seconds. PleaseNote‐FlushValveisnotcompletelyopen
unl3secondsintothismevalue.
V. MENU SCREENS (CONT.)
InletLowPressureSetpointScreen
The Inlet Pressure transducer is monitored to sense sufficient Inlet Pres‐
sure and allow Timed Flushes, and Differenal Pressure Flushing. On
these systems, when the inlet pressure is sensed as lower than the Set‐
point, the Flush Interval mer will be paused, and a med Flush will not
occur. Differenal Pressure Flushing will also be inhibited. DP sensing
will connue, and the Status Screen will display >> HighPSID<< on the
second line. When the Inlet Pressure is sensed as low, the top line of
the Status Screen will display Inlet Pressure Low.
SetpointAdjustment‐The Inlet Low Pressure Setpoint is adjustable
from 5 (PSI) to 20 (PSI). Factory Preset value is 15 (PSI).
InletLowPressure
Setpoint:00015
FlushDuration
Seconds: 00008
FlushInterval
HOURS:MM00024:00
Enter
PSIDSetpoint07
Page 7
FlushCountersScreen
Trip:The number of Flush cycles that have occurred since the counter
was last reset. This includes cycles iniated both manually and auto‐
macally. This counter can be reset by pressing the red ESCbuon from
the Flush Counters screen.
Life:The number of Flush cycles that have occurred in the controller’s
lifeme. This includes cycles iniated both manually and automacally.
This counter cannot be reset.
TimeSinceLastFlush&TriggeredByScreen
This screen is READ ONLY for informaon and is not adjustable. The
screen shows the amount of me that has elapsed since the system last
Flushed (example: 00011:30 is 11 hours and 30 minutes) and how the
last Flush was triggered. There are four trigger possibilies:
1) Local Operator ‐Flush triggered manually by an operator
2) Timer ‐the backflush was triggered by me as set on the Backflush
Interval screen.
3) PD Transducer ‐the Flush was triggered by a high pressure differen‐
al, as set on the PSID setpoint.
4) Customer Input ‐Oponal Customer’s Input signal at input I1 iniat‐
ed the Flush Cycle.
V. MENU SCREENS (CONT.)
FlushCounters
Trip: 00010
Life: 000000010
PressESCtoReset
TimeSinceLast
Flush 00000:04
TriggeredBy:
PDTransducers
ControllerIDScreen
This screen is READ ONLY and is used to idenfy the controller version
and ID.
Maxim4PDA/ATF‐MAX
Controllerv.3.5
Copyright(c)2021
ML31155
Page 8
VI. LAYOUT & I/O CONFIGURATION
Inputs
I1 ‐The oponal Customer Iniate Flush input will signal the PDA/ATF‐MAX to start a Flush cycle.
IB ‐The oponal Customer Remote Alarm Reset input will signal the PDA/ATF‐MAX to remotely reset the Consecuve Flush Alarm.
The Analog/Digital Input locaons allow manufacturer to design customer specific programs. These programs are then able to re‐
ceive and process both digital and analog signals from devices such as Pressure Transducers, Flow‐meters, Level Switches, etc. In‐
puts IC & ID are the Inlet and Outlet Pressure Transducer connecons. These provide a 0‐10Vdc signal into the controller. These
signals are converted into pressure level values and compared to each other for the pressure differenal value. When the PD value
exceeds the PD setpoint, the PDA/ATF‐MAX is signaled to start a Flush cycle. The Inlet Pressure Transducer also is used to disable
the Flush Timer and Flush Signal from Differenal Pressure, should the Inlet Pressure be less than the Inlet Low Pressure Set‐point.
Outputs
(Note ‐each assigned output’s leterminal has been connected to the 24VDC power. The output’s right terminal provides the out‐
put signal)
Output #1 controls the Flush valve.
Output #2 is not assigned.
Output #3 is a relay output for the Alarm Light/Sounder ‐DP Alarm is flashing and Consecuve Flush Alarm is steady.
Output #4 Consecuve Flush Alarm signal ‐relay output turned on when the Consecuve Flush count reaches the setpoint. This
output is wired to the coil of Relay 1 (see above) to provide a Dry Contact output.
VII. ELECTRICAL CONNECTIONS
NOTE:When using an external power source, the input power to the Controller must be the same as indicated on the
upper leside of the PDA/ATF‐MAX. Typically the controller is 24 volts DC. Plug the provided 24VDC Power Supply into
a standard 120VAC Outlet, observing all state and local codes.
FlushValve
The FlushValveis connected to Output#1 terminal(+ signal, white wire), Common (‐) power termi‐nal (Power Common, black
wire), and 24VDC (+) power terminal (Power +, red wire). PleaseNote‐withpoweronandnosignal,theFlushValvewill
movetoitsclosedposion,unlitisclosed.
PressureTransducers
The PressureTransducershave a three wire connecon, white assigned to the input (IC or ID), blue to the Common (‐) terminal,
and the brown to the 24VDC Power (+) terminal .
CustomerIniatedFlushSignal(Oponal)
The oponal CustomerIniateFlushSignalinput is connected to Input I1. Please Note ‐this signal must be a discrete 24VDC
signal, that references the Common (‐) terminals.
CustomerRemoteAlarmResetSignal(Oponal)
The oponal CustomerRemoteAlarmResetSignalinput is connected to Input IB. Please Note ‐this signal must be a discrete
24VDC signal, that references the Common (‐) terminals.
ConsecuveFlushAlarmOutputSignal(DryContact,Oponal)
Output #4 is the discrete ConsecuveFlushAlarm24VDC output signal, that is connected to the coil of Relay 1 (R‐1). This relay
provides a Dry Contact connecon for Customer ConsecuveFlushAlarmsignal.
Review the Electrical Schemac secon prior to making any connecons to the controller.
Page 9
VIII. ELECTRICAL SCHEMATIC
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