Thermal Care SF Series Instruction Manual

Page 1
Table of Contents
I. Safety Consideraons..…………………………………….. 1
II. Descripon………………...…...………………...…………… 1
IV. Operaon……………………………………………...………. 3
V. Menu Screens……………..…..……………………………… 4
VI. Layout & I/O Configuraon….………….…………….. 8
IX. Limited Warranty & Contact Info…………………… 10
III. System Overview……………………………………………. 2
VII. Electrical Connecons…………………………………… 8
VIII. Electrical Schemac……………………………………… 9
I. SAFETY CONSIDERATIONS
GENERAL WARNING
Ensure all appropriate personnel read owner’s manual prior to installaon and/or operaon of controller. Failure to
comply with instrucons and safety precauons could lead to personal injury or product damage. Please call
and ask to speak with one of our customer service representaves if there are any quesons.
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 differenal with alarm indicator and automacally controlling
the flush valve of a SF Series strainer.
OWNER’S MANUAL

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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
protecon 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) Mounng bracket
E) Flush valve assembly
A) Audio‐Visual Alarm
B) Controller Screen
C) Keypad

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Startup

1) Plug in the power plug into a standard 115VAC wall outlet
2) Upon power‐up, the company informaon screen will be shown for 15 seconds.
3) Aer 15 seconds, the screen will change to the manifold pressure screen and will begin monitoring differenal pressure across
the strainer.
AutomacFlushing

Under normal operaon, a med flush will be iniated on a periodic schedule defined by the PDA/ATF‐MAX programmed seng.
(every 24 hours per factory seng).
In addion, a med flush will be iniated when the differenal pressure reaches the setpoint defined by the PDA/ATF‐MAX
sengs.
See the MENU SCREENS secon for informaon on changing factory sengs.
ConsecuveFlushAlarm
If three consecuve flushing operaons are detected by the PDA/ATF‐MAX, a consecuve flush alarm will be triggered and no addi‐
onal flush cycles will be iniated unl the alarm is cleared.
To reset the Consecuve Flush Alarm, first, correct the cause of the alarm, then push the red ESC buon on the controller while a
Status screen is displayed. The oponal Customer’s Remote Reset input, Input iB, allows for a remote reset of the Consecuve
Flush Alarm.
ScrollingthroughMenuScreens

The PDA/ATF‐MAX allows the operator to scroll through a selecon of menu
screens by pressing the Aor Bbuons. Press Ato scroll backward to the pre‐
vious menu or press Bto scroll forward to the next menu. The LCD backlight
will automacally turn on for 5 minutes when a buon is pressed, thus allow‐
ing the operator to easily view the menus in low light situaons.
ChangingParameterValues

To change an adjustable value, first scroll to the appropriate menu screen using the A or B buon. Follow the direcons 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 ‐buons to change the value. Holding the + or ‐buon will allow the value to increase at a faster rate aer 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

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V. MENU SCREENS

Miller‐LeamanInc.

800‐881‐0320
PowerUpScreen

The Power Up screen displays the company informaon. Each me the
PDA/ATF‐MAX is plugged in, or when power is returned aer 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.
ManifoldPressureScreen:

Aer 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 differenal
pressure between the inlet and outlet manifolds.
ManifoldPressure
Inlet:0034.0
Outlet:0032.0
PSID:0002.0
TheStatusScreens

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, automacally via the Flush Interval Timer or the Pressure Differenal Transducers (PSID), or remote‐
ly by oponal Customer Input Signal.
The current status of the controller is displayed as follows: Status:AUTO
PSID:0003.0
PressOKtoStart
AFlushCycle
Status:AUTO
>>HighPSID<<
PressOKtoStart
AFlushCycle
Status: AUTO
Indicates that the Inlet Pressure is not Low, and the controller is waing
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 differenal via the Pressure Transducers, indicated as >> High
PSID << on the display, manually by the operator by pressing the green
OK buon on the controller, or by the Customer Input Signal.
Status:ON
FlushCycle

PressESCtoStop
Status:AUTO
PSID:0003.2
PressOKtoStart
AFlushCycle
Status: ON
Indicates that the system is in a Flush cycle, iniated 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 enre
Flush cycle. The Flush Duraon is nominally set for 8 seconds. The Flush
Duraon me is adjustable ‐see Setup screen for informaon.
Aer this Flush duraon 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.

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V. MENU SCREENS (CONT.)
Status:ON
>ConsecFlushAlarm<

PressESCtoStop
Status ‐Consecuve Flush Alarm
On any of the status screens, a Consecuve Flush Alarm screen can be
acvated. The second line down will be alternately flashing
>ConsecFlushAlarm< and whatever was on line 2 before the system
alarm occurred.
A Consecuve Flush Alarm occurs when the Flush cycle has been iniat‐
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 Consecuve Flush Alarm
monitoring.
The Consecuve Flush Alarm will also cause the Alarm Light/Sounder to
change from flashing to steady ON. The Consecuve Flush Alarm will
also disable any addional Flush Cycles from occurring.
Status:OFF
PSID:00.0
InletPressureLow
PSID:00.0
Status:OFF
>>HighPSID<<
Status: OFF
The Inlet Pressure transducer is monitored to sense sufficient Inlet
Pressure and allow Timed Flushes, and Differenal 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.
Differenal Pressure Flushing will also be inhibited. DP sensing will
connue, 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 alternang with Inlet Pres‐
sure Low.

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FlushInterval&PSIDSetpointScreen

The user‐defined interval at which the system will iniate an automac
Flush cycle. The Flush Interval mer resets aer any Flush cycle occurs
(by mer, PD Transducers, operator, or Customer Input Signal). This
value is adjustable from 1 minute to 1000 hrs. Seng 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 differenal set‐point is reached. Factory Preset value
is 24 Hours.
The Pressure Differenal seng in PSI, which when compared to the
calculated Differenal 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. Seng this PSID Setpoint at low flow
may result in connuous Flushing at higher flow rates, since the Pres‐
sure Differenal increases with flow rate. This value is adjustable from 1
to 30 PSID. Factory preset is 7 PSID.
FlushDuraonScreen

The me alloed 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. PleaseNote‐FlushValveisnotcompletelyopen
unl3secondsintothismevalue.
V. MENU SCREENS (CONT.)
InletLowPressureSetpointScreen

The Inlet Pressure transducer is monitored to sense sufficient Inlet Pres‐
sure and allow Timed Flushes, and Differenal 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. Differenal Pressure Flushing will also be inhibited. DP sensing
will connue, 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 Inlet Pressure Low.
SetpointAdjustment‐The Inlet Low Pressure Setpoint is adjustable
from 5 (PSI) to 20 (PSI). Factory Preset value is 15 (PSI).
InletLowPressure
Setpoint:00015
FlushDuration
Seconds: 00008
FlushInterval
HOURS:MM00024:00
Enter
PSIDSetpoint07

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FlushCountersScreen

Trip:The number of Flush cycles that have occurred since the counter
was last reset. This includes cycles iniated both manually and auto‐
macally. This counter can be reset by pressing the red ESCbuon from
the Flush Counters screen.
Life:The number of Flush cycles that have occurred in the controller’s
lifeme. This includes cycles iniated both manually and automacally.
This counter cannot be reset.
TimeSinceLastFlush&TriggeredByScreen

This screen is READ ONLY for informaon 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 possibilies:
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 ‐Oponal Customer’s Input signal at input I1 iniat‐
ed the Flush Cycle.
V. MENU SCREENS (CONT.)
FlushCounters
Trip:  00010
Life: 000000010
PressESCtoReset
TimeSinceLast
Flush 00000:04
TriggeredBy:
PDTransducers
ControllerIDScreen

This screen is READ ONLY and is used to idenfy the controller version
and ID.
Maxim4PDA/ATF‐MAX
Controllerv.3.5
Copyright(c)2021
ML31155

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VI. LAYOUT & I/O CONFIGURATION
Inputs
I1 ‐The oponal Customer Iniate Flush input will signal the PDA/ATF‐MAX to start a Flush cycle.
IB ‐The oponal Customer Remote Alarm Reset input will signal the PDA/ATF‐MAX to remotely reset the Consecuve Flush Alarm.
The Analog/Digital Input locaons 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 connecons. 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 differenal 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 Differenal Pressure, should the Inlet Pressure be less than the Inlet Low Pressure Set‐point.
Outputs
(Note ‐each assigned output’s leterminal 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 Consecuve Flush Alarm is steady.
Output #4 Consecuve Flush Alarm signal ‐relay output turned on when the Consecuve 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 leside 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.

FlushValve
The FlushValveis connected to Output#1 terminal(+ signal, white wire), Common (‐) power termi‐nal (Power Common, black
wire), and 24VDC (+) power terminal (Power +, red wire). PleaseNote‐withpoweronandnosignal,theFlushValvewill
movetoitsclosedposion,unlitisclosed.

PressureTransducers
The PressureTransducershave a three wire connecon, white assigned to the input (IC or ID), blue to the Common (‐) terminal,
and the brown to the 24VDC Power (+) terminal .

CustomerIniatedFlushSignal(Oponal)
The oponal CustomerIniateFlushSignalinput is connected to Input I1. Please Note ‐this signal must be a discrete 24VDC
signal, that references the Common (‐) terminals.
CustomerRemoteAlarmResetSignal(Oponal)
The oponal CustomerRemoteAlarmResetSignalinput is connected to Input IB. Please Note ‐this signal must be a discrete
24VDC signal, that references the Common (‐) terminals.
ConsecuveFlushAlarmOutputSignal(DryContact,Oponal)
Output #4 is the discrete ConsecuveFlushAlarm24VDC output signal, that is connected to the coil of Relay 1 (R‐1). This relay
provides a Dry Contact connecon for Customer ConsecuveFlushAlarmsignal.
Review the Electrical Schemac secon prior to making any connecons to the controller.

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VIII. ELECTRICAL SCHEMATIC