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Page 2 of  3

 

Alarm Output 

-

 Customer

’

s Dry Contact: 

See illustration on front page. The PC Board has been factory set up for a 12 VDC Output to the Relay 2 coil when the alarm 

activates. Relay 2 provides a Dry Contact for the optional use by the Customer. A cable strain relief port  has been provided for the 

Customer

’

s wiring to this Dry Contact Alarm signal. A maximum switching power of 24VDC 0.5 Amp is recommended.

 

(Please see the PDA2 Electrical Schematic below, on page 3 of this manual. If you have any additional questions please contact MLI 

at 386

-

248

-

0500 or e

-

mail [email protected].)

 

Water Resistance:

 

The Pressure Differential Alarm Controller is  water

-

proof, but not submersible. Do not install below ground level where the box can be 

submerged in water.  Keep the enclosure

’

s Clear cover latched during normal operation. Insure all strain reliefs have be properly tight-

ened to maintain this Nema 4X integrity. Periodically check inside the enclosure, with the power disconnected, and the cover plate 

opened, for any signs of leakage.

 

Miller

-

Leaman, Inc. Return Policy:

 

Units in need of warranty repair and less than 90

-

days old, must be returned to MLI accompanied by a Return Material Authorization 

(RMA) number. To request a RMA number call (386) 248

-

0500.  

 

Maintenance: 

The PDA alarm should be checked on a routine basis by contacting the differential set

-

point (see illustration on first page) so that the 

audible and visual alarm engages and the alarm

-

reset button deactivates the alarms. 

 

II. G

ENERAL INFORMATION

Operation Instructions:

  

Remove the power supply from the box and insert the connector end into the socket on the bottom of the PDA housing, as indicated in 

the drawing above.  Plug the power supply into a nominal 120VAC power outlet.  Standard systems are supplied with a Wall Plug

-

In 

12VDC Power Supply, with an input power of 120VAC.

 

Please Note 

-

 In the case of an 

“

Outdoor

” 

use application, where there is a chance that the unit could get wet, it is the Cus-

tomer

’

s responsibility to provide a safe power outlet, in terms of being water proof, and physically able to accept the plug

-

in 

power supply we provide. Miller 

-

 Leaman, Inc. also recommends that the installation be only performed by a qualified elec-

trician, and that all Local, State, and National Electrical Codes be followed.

 

The  pressure  differential  switch

-

gauge  is  factory  set  to  7

-

8  PSI.  Since  the 

Thompson  Strainer

  operates  with  less  than  1  PSI  loss 

during maximum flow when the strainer screen is clean, the differential shown on the switch

-

gauge will be 1 PSI. Therefore, by the 

time the differential pressure rises to 7

-

8 PSI, the strainer element will have become significantly clogged and will require immediate 

removal and cleaning. 

 

To adjust the pressure differential switch

-

gauge to a lower setting, simply turn the small black knob to move the differential set

-

point 

contact (see illustration above) to the desired location. 

 

WE DO NOT RECOMMEND SETTING THE DIFFERENTIAL SWITCH

-

GAUGE HIGHER THAN 10 PSI.  DISABLING THE ALARM 

OR INCREASING THE ALARM SET POINT COULD RESULT IN DAMAGE TO THE STRAINER ELEMENT AND ALLOW DEBRIS 

TO PASS INTO THE SYSTEM.

 

The alarm will latch

-

ON when the differential set point is reached and will stay latched until the Reset button is pressed. (If the Reset 

button is pressed but the strainer remains beyond the acceptable differential pressure, the alarm will re

-

latch immediately).  The 

purpose of the alarm package is to alert maintenance personnel that the strainer element requires cleaning.  Therefore, if the Alarm 

Light is flashing, and has sounded, the strainer needs to be taken off

-

line and the strainer element needs to be cleaned as instructed 

in the 

STRAINER ELEMENT CLEANING

 section of the 

Thompson Strainer Owner

’

s Manual

.  

 

After the strainer is cleaned and put back in service, the differential pressure should be back to 1 PSI.  If the switch

-

gauge indicates a 

1 PSI differential but the alarm is still sounding, press the Reset button. 

 

If you have any questions about the Pressure Differential Alarm Package, please call our product specialists at (386) 248

-

0500. You 

can also e

-

mail your questions to [email protected].

 

Содержание THOMPSON PDA

Страница 1: ...installation and or operation of controller Failure to Comply with instructions and safety precautions could lead to personal injury or product damage Please call and ask to speak with one of our customer service representatives if there are any questions CAUTION Disconnect controller from power source before servicing or removing cover II DESCRIPTION The PDA ATF MAX is a dual purpose controller f...

Страница 2: ...troller screen and keypad interface as shown The clear cover provides protection 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 Mounting bracket E Flush valve assembly A Controller Screen B Keypad ...

Страница 3: ...lows for a remote reset of the Consecutive Flush Alarm Scrolling through Menu Screens The PDA ATF MAX allows the operator to scroll through a selection of menu screens by pressing the A or B buttons Press A to scroll backward to the previous menu or press B to scroll forward to the next menu The LCD backlight will automatically turn on for 5 minutes when a button is pressed thus allowing the opera...

Страница 4: ...tatus OFF MAX High PSID Status OFF MAX The Inlet Pressure transducer is monitored to sense sufficient Inlet Pressure and allow Timed Flushes and Differential Pressure Flushing When the inlet pressure is sensed as lower than the Setpoint the Flush Interval timer will be paused and a timed Flush will not occur Differential Pressure Flushing will also be inhibited DP sensing will continue and the Sta...

Страница 5: ...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 entire Flush cycle The Flush Duration is nominally set for 8 seconds The Flush Duration time is adjustable see Setup screen 3 for information After this Flush duration time the Flush Cycle is complete The Open Flush Valve Output wi...

Страница 6: ... is 7 PSID This set point is located on Screen 2 Flush Duration Screen The time allotted for the Flush Valve to be open This time 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 This setpoint is located on Screen 3 Please Note Flush Valve is not completely open until 3 seco...

Страница 7: ... 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 possibilities 1 Local Operator Flush triggered manually by an operator 2 Timer the backflush was triggered by time as set on the Backflush Interval screen 3 PD Transducer the Flush was triggered by a high pressure differen tial as set on the PSID setpoint 4...

Страница 8: ...et input will signal the PDA ATF MAX to remotely reset the Consecutive Flush Alarm The Analog Digital Input locations allow Miller Leaman Inc to design customer specific programs These programs are then able to receive and process both digital and analog signals from devices such as Pressure Transducers Flow meters Level Switches etc Inputs IC ID are the Inlet and Outlet Pressure Transducer connec...

Страница 9: ...e assigned to the input IC or ID blue to the Common terminal and the brown to the 24VDC Power terminal Customer Initiated Flush Signal Optional The optional Customer Initiate 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 Optional The optional Customer Remote Alarm Reset Sig...

Страница 10: ...Page 10 VIII ELECTRICAL SCHEMATIC ...

Страница 11: ...uator The valve body has a 316SS ball inside a UV modified glass filled Nylon housing The actuator has high torque motor gears and solid state components for increased durability and maintenance free performance contained inside a NEMA6P enclosure AUTOMATIC TIMER FLUSH VALVE ATF2 Primary Components D J C A E G K L I B H M N F A POWER SUPPLY B CONTROL TOGGLE SWITCH 3 POSITION LIGHTED C CONTROL BOX ...

Страница 12: ...d result in equipment damage The valve is configured as normally closed however in the event of an extended power failure while the valve is fully or partially open the actuator will be unable to power back to fully closed position This could result in water continuing to drain from the strainer until power is restored It is important to inspect this equipment routinely to ensure that the ATF2 has...

Страница 13: ...frequency of flush in ten 10 minute increments Digit Toggle 4 changes frequency of flush in one 1 minute increments When time has been selected push the RESET button to save the setting and begin the new cycle Example the Factory Setting will display as 24 00 Pushing 1 down twice pushing 2 up one time pushing 3 down two times and pushing 4 up five times will change the Frequency of flush cycle to ...

Страница 14: ...alue Use SET LOCK button to toggle between T1 SET VALUE INDICATOR AMBER Displayed when showing editing T1 setting T2 SET VALUE INDICATOR AMBER Displayed when showing editing T2 setting BUTTON BUTTON ACTION RESET Set time selections and Clear Flush SET LOCK Toggle between T1 and T2 Setting Lock screen Push Lock and Digit 1 together BUTTON T1 FREQUENCY PROGRAMMING T2 DURATION PROGRAMMING DIGIT 1 Adj...

Страница 15: ... BALL BODY MAXIMUM PRESSURE ATF2 075 3 4 316SS Nylon 150 PSI 70 deg F ATF2 100 1 316SS Nylon 150 PSI 70 deg F ATF2 150 1 1 2 316SS Nylon 150 PSI 70 deg F ATF2 200 2 316SS Nylon 150 PSI 70 deg F ATF2 300 3 316SS Polypropylene 100 PSI 70 deg F ATF2 MODEL INFORMATION Illuminated Rocker Switch AUTO Valve operates on Timer MANUAL Valve opens Momentary POWER SUPPLY SPECIFICATION AC DC SWITCHING ADAPTOR ...

Страница 16: ... be used as a guide when installing the PDA on to an existing Thompson Strainer 1 Place the PDA enclosure with the black bracket over the high and low gauge ports on the side of the strainer housing 2 While applying pressure to the enclosure and bracket tighten the 2 10 24 stainless steel set screws to secure the bracket on the gauge ports 3 Connect the blue 1 4 tube into the upper gauge port 4 Co...

Страница 17: ...us tomer s responsibility to provide a safe power outlet in terms of being water proof and physically able to accept the plug in power supply we provide Miller Leaman Inc also recommends that the installation be only performed by a qualified elec trician and that all Local State and National Electrical Codes be followed The pressure differential switch gauge is factory set to 7 8 PSI Since the Tho...

Страница 18: ... PDA2 WIRING SCHEMATIC Office Hours 8 AM 5 PM Eastern Time Web www millerleaman com Email support millerleaman com 800 Orange Avenue Daytona Beach FL 32114 Phone 386 248 0500 Fax 386 248 3033 ML40191 2022 REV 6 22 22 ...

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