EVAPCO PulsePure Integrated Controller-2 Installation and operating instructions

E V A P C O
Integrated Controller
Evapco
Pulse~Pure® Integrated Controller-2
Instruction, Operation and
Installation Manual Addendum
EVAPCO, Inc. World Headquarters; PO Box 1300; Westminster, MD USA
Pulse~Pure® Integrated Controller Addendum Rev.2 TEL: [phone]

TABLE OF CONTENTS
1.0 INTRODUCTION...........................................................................................................................................1
2.0 SPECIFICATIONS.........................................................................................................................................2
2.1 Measurement Performance...................................................................................................................2
2.2 Electrical: Input/Output..............................................................................................................................2
2.3 Mechanical............................................................................................................................................. 2
2.4 Variables and their Limits.......................................................................................................................3
3.0 INSTALLATION..................................................................................................................................................4
3.1 Installation..............................................................................................................................................4
3.2 Icon Definitions ......................................................................................................................................4
3.3 Typical Mounting....................................................................................................................................4
3.4 General Panel Layout............................................................................................................................6
3.5 Conductivity Probe, Flow Switch and Water Meter Connections............................................................7
3.6 Blowdown Valve and Timer Connections..............................................................................................8
4.0 FUNCTION OVERVIEW....................................................................................................................................9
4.1 Front Panel ............................................................................................................................................ 9
4.2 Display...................................................................................................................................................9
4.3 Touch Screen Display..........................................................................................................................10
4.3.1 Icons...................................................................................................................................................10
4.4 Password.............................................................................................................................................11
4.5 Startup .................................................................................................................................................11
4.6 Shut Down ........................................................................................................................................... 11
5.0 OPERATION................................................................................................................................................12
5.1 Main Menu...........................................................................................................................................12
5.2 Configuration........................................................................................................................................13
5.2.1 Global Settings…………………………………………………………………………………..…………...13
5.2.2 Security Settings……………………………………………………………………………………………...13
5.2.3 Display Settings……………………………………………………………………………………..………..14
5.2.4 File Utilities …………………………………………………………………………………………………...14
5.2.5 Controller Details……………………………………………………………………………………………..15
5.3 Inputs...................................................................................................................................................16
5.3.1 Conductivity…………………………………………………………………………………………………..16
5.3.2 Temperature.…………………………………………………………………………………………………16
5.3.3 Flow Switch…………………………………………………………………………………………………...17
5.3.4 Water Meters…………………………………………………………………………………………………17
5.3.5 Other Inputs…………………………………………………………………………………………………..17
5.4 Outputs ................................................................................................................................................17
5.4.1 Bleed…………………………………………………………………………………………………………..17
5.4.2 Biocide Timer and Alarm…………………………………………………………………………………….18
6.0 MAINTENANCE..............................................................................................................................................21
6.1 Sensor Cleaning ..................................................................................................................................21
6.2 Replacing Fuse………………………………………………………………………………………………..21
7.0 TROUBLESHOOTING................................................................................................................................22
7.1 Alarm/Error Messages.........................................................................................................................22
7.2 Procedure for Evaluation of Conductivity Probe..................................................................................24

1
1.0 INTRODUCTION
The Evapco Pulse~Pure Integrated Controller offers conductivity control of evaporative cooling water
integrated into Evapco’s patented water treatment system. This addendum should be used in
conjunction with Evapco’s standard Pulse~Pure® Installation, Operation, and Maintenance Manual.
The Pulse~Pure Integrated Controller is microprocessor-driven with on/off control outputs. It is
supplied with a temperature compensated toroidal conductivity sensor and associated mounting
assembly for the sensor. Set points and operating parameters may be viewed without interrupting
control. Each set point change will take effect as soon as entered.
The Timer output is scheduled on a user selectable daily, weekly, two week or four week recurring
cycle. It may be programmed for one cycle per day (in weekly, two week or four week cycle) or up to
10 times per day (in daily cycle). The Timer output is equipped with a pre-bleed and bleed lockout
feature.
All control outputs are interlocked with a flow input via the X-1 connector on the Pulse~Pure circuit
board. An alternative arrangement allows only the blowdown and timer relays to be interlocked with
flow while the Pulse~Purechamber is continuously energized.
Our unique USB feature provides the ability to:
1. Export Config file to a standard USB flash stick to save all controller set points and load settings
into another controller.
2. Download the last 2 months of data including, conductivity, temperature, water use (if
equipped with optional water meters), and Pulse~Pure status onto a standard USB flash disk.

2
2.0 SPECIFICATIONS
2.1 Measurement Performance
Conductivity Range
0 - 12,000 µS/cm (microSiemens/centimeter)
Conductivity Resolution
1 µS/cm
Conductivity Accuracy
500 - 12,000 µS/cm ±1% of reading
Temperature Range
32 - 158°F (0 - 70°C)
Temperature Resolution
0.1°F or oC
Temperature Accuracy
± 1% of reading
2.2 Electrical: Input/Output
Input Power
115 or 460 VAC 60 Hz
230 VAC 50 Hz (Europe)
Input Signals
Conductivity probe
Passive Electrodeless, RTD, PT1000 Temp. Element
Flow Switch (if equipped)
Isolated, dry contact closure required (i.e. relay, reed
switch)
Water Meter (optional)
Digital 0-10 Hz, 50 msec minimum width
Outputs
Mechanical Relays
Two - 6 Amp Total 115/230 VAC (resistive) fused
One mechanical relay assigned to blowdown valve
2.3 Mechanical
Enclosure Material
Stainless Steel
NEMA Rating
NEMA 4X
Dimensions
16” x 16” x 9”
Display
320 x 240 pixel monochrome backlit display
with touchscreen
Operating Ambient Temperature
32 –122°F (0 –50°C)
Storage Temperature
-20 –180°F (-29 –80°C)
Electrodeless Sensor Pressure Rating
140 psi (9.7 Bar)

3
2.4 Variables and their Limits
Low Limit
High Limit
Default
Conductivity Menu
Units
µS/cm, mS/m, S/m
µS/cm
Bleed Menu
Set Point
0 µS/cm
15,000 µS/
1000
Dead Band
Low end of range
High end of range
50
Water Meter Menus
Units
Gallons, Liters, Cubic Meters
Gallons
Gallons per Contact
1 gal/contact
500 gal/contact
100
Liters per Contact
1 L/contact
500 L/contact
Not set
Cubic Meters per contact
0.001 cu. meters/contact
1000 cu. meters/contact
Not set
Timer Menu
Pre-Bleed (0 disables pre-bleed)
1µS/cm
99 µS/cm
0
Lockout
0 minutes
9 hrs:59 min
0
Add Time
Mode
Daily, weekly, two-week, four-week
Not Set
Daily Adds
0 minutes
144 minutes
0
All other modes
0 minutes
1440 minutes
0
Time of Day (Military)
0:00:00
23:59:00
0:00
Password Menu
New Value
0000
9999
Not Set

4
3.0 INSTALLATION
3.1 Installation
Once the Pulse~Pure Integrated Controller panel is mounted, the blowdown valve may be located at any
distance from the controller. The conductivity probe should be placed as close to the panel as possible.
For field installed integrated controllers the probe and flow switch assembly must be located within 20
ft. of the integrated controller. Sufficient flow to the probe assembly should be ensured by piping supply
from the discharge side of recirculating pump and return to either the basin or the suction side of
recirculating pump. Always route low voltage (sensor) signals with at least a 6” separation from AC
voltage wiring.
Locate the probe assembly where an active sample of cooling tower water is available. The probe and
flow switch (system dependent) must be located where they can easily be removed for cleaning and
inspection. They must be situated so that the assembly is always full of water when the tower is
operating. Refer to Figure 1 and Figure 2 for typical installations.
IMPORTANT: To avoid cracking the female pipe threads on the supplied plumbing parts, use no
more than 3 wraps of Teflon tape and thread in the pipe FINGER tight plus 1/2 turn! Do not use
pipe dope to seal the threads of the flow switch because the clear plastic will crack!
3.2 Icon Definitions
3.3 Typical Mounting
Mount the Pulse~Pure Integrated Controllerpanel so that the Chamber cable will reach the bottom
connector. It is advisable to mount the Pulse~Pure Purification Chamber before mounting the
panel to ensure that the shielded cable reaches the bottom of the panel without stress. The panel
should be mounted at a height and location that allows operators to fully open the panel door for routine
access. Locate the conductivity probe in side stream piping which supplies a representative portion of
evaporative cooling water and is within 20 feet of the panel. Install side stream piping with isolation
valves so that the probe and flow switch (system dependent) can be easily removed for periodic cleaning
and inspection. See Figure 1 and Figure 2 for typical mounting options. Contact your Evapco
representative for specific installation recommendations.
Symbol
Publication
Description
IEC 417, No.5019
Protective Conductor Terminal
IEC 417, No. 5007
On (Supply)
IEC 417, No. 5008
Off (Supply)
ISO 3864, No. B.3.6
Caution, risk of electric shock
IEC 3864, No. B.3.1
Caution

5
Figure 1 Typical Installation –Closed-Circuit Cooler or Condenser (self-draining sidestream)
Figure 2 Typical Installation –Single Tower

6
3.4 General Panel Layout
Figure 3 PPIC2 General Panel Layout
Figure 4 Interface Board Located on Left Side of Panel
Pre-wired Display Board
Pulse~Pure Board –X-1
Terminal is located here
DIN Rail to connect
blowdown valve and
timer
Interface Board –Connect
conductivity probe, flow switch
and water meters here
FLOW SW
H20 METER #1
H20 METER #2
Conductivity Probe connections
(Position #1 at top)
JP1 For Alternate Procedure
Move JP1 Jumper to center and
“COND ONLY” pins
If using alternate procedure
connect flow switch leads
to terminals shown.
Connect water meters to
terminals as shown.

7
3.5 Conductivity Probe, Flow Switch and Water Meter Connections
3.5.1 Conductivity Probe
The conductivity probe contains eight wires. Lace conductivity probe wires through the
probe’s locking nut before wiring into panel. Bring wire into panel through supplied
waterproof strain-relief cord grip located on the bottom of Integrated Panel.
Connect wires to connector on Interface Board located on the left-hand side of panel door. Be
sure to connect the named, color-coded wires to the proper connector. See door label or Figure
5for wiring sequence. From top of connector the sequence is:
Position
Wire Label
Wire Color
1
TEMP -
BLACK
2
TEMP+
GREEN
3
R-SHLD
CLEAR
4
NOT USED
5
RCV -
BLACK
6
RCV+
RED
7
X-SHLD
CLEAR
8
NOT USED
9
NOT USED
10
XMT+
BLACK
11
XMT-
WHITE
12 - 18
NOT USED FOR CONDUCTIVITY PROBE
Figure 5 Conductivity Probe Wiring Connections
3.5.2 Flow Switch (System Dependent)
In the preferred configuration, a secondary contact (dry) from the tower recirculating water
pump-starter is wired into the X1 connection on the main Pulse~Purecircuit board. (See the
Pulse~PureIOM for details of this connection). For an installation with multiple pumps where it
is impractical to connect the Pulse~PureIntegrated Controller Panel in this manner, the alternate
procedure should be used.
3.5.2.1 Alternate Procedure
A flow switch is used to control the conductivity-actuated blowdown-relay and
timer-relay while the Pulse~Pure Chamber operates continuously. Flow
switches require regular maintenance and may fail in the open (No Flow)
position. For the alternate procedure, jumper the X1 terminal on the Pulse~Pure
circuit board and move jumper JP-1 on the Interface Board from “PP +
COND” and center pins to center and “COND ONLY” pins. Connect a dry-
contact flow switch to the “FLOW SW” terminals on the Interface Board. See
Figure 4.
3.5.3 Water Meters (Optional)
Water meter totalizers are digital counters designed to operate with a contacting head water
meter. Two water meters can be connected to the Pulse~Pure® Integrated Controller. See
Figure 4.

8
3.6 Blowdown Valve and Timer Connections
The Pulse~Pure Integrated Controller allows 5 Amps of current for incoming power of
120V, 230V or 460V for operatingaconductivity-actuated blowdown valve and timer-
actuated device.
Make all connections to the DIN rail located inside the Pulse~Pure Panel at the bottom.
Feed wires from the devices through waterproof stress-relief cord grips provided.
Connect the HOT lead from blowdown valve to the BLDN terminal and NEUTRAL to #2
terminal. Connect the HOT lead from a timer-actuated device, to the TMR terminal and
NEUTRAL wire to #2 terminal. See Figure 6.
Figure 6 DIN Rail Connections for Blowdown
Valve and Timer-Actuated Device
Connect HOT lead from Timer-
Actuated Device to TMR terminal.
Connect HOT lead from Blowdown
Valve to BLDN terminal.
Connect NEUTRAL leads
from Blowdown Valve and
Timer-Actuated Device to
#2 terminals.

9
4.0 FUNCTIONOVERVIEW
4.1 Front Panel
4.2 Display
Figure 7 Front Panel
A summary screen (Home) is displayed when the Integrated Panel is energized, and system is operating.
Conductivity value, water temperature and flow status are displayed. When all systems are normal, Home,
Time and Date appear across the top of the display. Alarmand status messages such as Cond Hi/Lo Alarm,
No Flow are displayed along the top of the screen. Status and Alarm messages scroll across the top of the
display should there be more than one.
Figure 8 Home Screen
Backlit Touch Display
Status Indicator LEDs
Sun Shield
Main Service Disconnect
Panel Door Locks (2)

10
4.3 Touch Screen Display
The Touch Display screen is used to navigate thorough menu of the controller. The unit will control
continuously while power is supplied, even while navigating or changing programming.
The Home screen is displayed while the controller is powered and turned on. Touching any of the items
on the Home screen will bring up the selected item’s Details Screen where you can access calibration
and settings menus. Touching the Menu icon brings up the Main Menu screen which leads to all the
controller functions.
4.3.1 Icons
The Main Menu Icon brings you to the list of menu items listed below.
The following icons appear on the Main Menu screen. Touch the icon to get to the menu selections.
Alarm Menu HOA Menu
Inputs Menu Configuration Menu
Outputs Menu Home Page
Other icons that are used in menu screens.
Calibration icon appears in sensor input menus and brings up the calibration menu
X Cancel icon aborts a calibration or setting change
The Page Down icon scrolls down to a new page in a list of options.
The Page Up icon scrolls up to a new page in a list of options.
The Back/Return icon returns the display to the previous screen
The Make Character Higher icon is used when making an alphanumeric entry
The Make Character Lower icon is used when making an alphanumeric entry
The Move Cursor icon is used to scroll left to right within an alphanumeric entry
The Confirm icon accepts a choice, finishes entering data, or advances to the next calibration

11
4.4 Password
The controller is shipped with the password disabled. If you wish to enable it, see Section 5.2.2 for
operation. With the password enabled, any user can view but not change settings. Note that this provides
protection only against casual tampering.
4.5 Startup
Initial Startup
After the Pulse~Pure Integrated Controller Panel has been wired and the conductivity probe and
blowdown valve are plumbed and wired, the controller is ready to be started.
Supply power to the unit by switching the main power disconnect to the “ON” position. The disconnect is
located on the upper right of the panel door. All circuit breakers in the panel should be in their ON
position. The display will briefly show the message “Evapco Controller Initializing” then revert to the
Home display.
4.5.1 Temperature sensor is included as part of the electrodeless conductivity sensor.
Verify that the conductivity probe is calibrated accurately for temperature. For most
probes the factory- calibration is adequate. If the temperature calibration needs
adjustment see Section 5.3.2
4.5.2 Follow the procedure for Open Air calibration before inserting the electrodeless probe into
the process flow. Once completed, perform the steps for a One Point Process calibration.
The probes must be calibrated during initial start-up of the system (see Section 5.3.1) or
when a conductivity probe has been replaced.
4.5.3 Enter Bleed conductivity set point value. Refer to Evapco’s PPF1.0 document for the initial
recommended conductivity set point.
Once Inputs and Outputs are connected to the Pulse~Pure Panel, calibration has been completed and
Bleed set point entered, the controller will continuously manage all Inputs and Outputs within the
desired programming parameters.
4.6 Shutdown
To shut the controller down, turn off the power to the Pulse~Pure panel using the main power disconnect.
Programing remains in memory when the Pulse~Pure panel is de-energized. Shutdown only if
maintenance or troubleshooting requires the Pulse~Pure panel door to be opened, or if the cooling system
is to remain off for an extended period of time, e.g. winter shutdown. During periods of intermittent
operation the Pulse~Pure Panel should remain energized. De-energizing the Pulse~Pure panel disables
system water treatment.

12
5.0 OPERATION
The Integrated Panel operatescontinuously when it is powered. The Touch Screen is used to program
operating settings and set points. Controllers havebeenprogrammed by Evapcoprior toshipmentwithdefault
settings. The settings but can be manually customized in the field as required. Keep track of any manual
programmingchangesmadeforfuturereference.
The Main Menu provides access to Inputs, Outputs and Configuration settings. Conducting sensor
calibration, assigning Input/Output channels, changing set points or timer values and configuring
operating modes are available from the main menu. After ten minutes of inactivity, the display will
return to the Home display. The Integrated panel is still controlling even while browsing through
menus.
5.1 Main Menu
All PPIC2 controller settings are accessed from the Main Menu. To view / adjust settings select the
Main Menu icon located in the lower left-hand corner of the Home display. PPIC panels are
configured for operation at the factory prior to shipment. Some item settings may be customized in the
field. Caution: Changing designation or settings associated with some attributes may affect PPIC
operation. Please read this Technical Manual carefully before changing settings.
Inputs
Conductivity
Hi and Low Alarm Settings
Temperature
Flowswitch
Flowmeter (Water Meter 1)
Flowmeter (Water Meter 2)
Outputs
Bleed
Set Point and Dead Band
Timer
Frequency and duration of events
PreBleed
Bleed Lockout
Add Last Missed
Alarm
Selection
Configuration
Global Settings
Date
Time
Global Units of Measure
Language
Security Settings
Local Password
Display Settings
• Adjust Display (contrast, brightness)
Key Beep
File Utilities
•Data Log Range and Frequency
•Export Data, Event and System Logs
•Export/Import User Configuration
Controller Details
Controller Serial Number
Controller Software Version

13
5.2 Configuration
5.2.1 Global Settings
Date
From the Main Menu screen, select Configuration Settings. Select Global Settings. Touch the Scroll Up or
Down icon until Date is displayed, and then select it. Touch the Move Cursor icon to assign year, month
and date. Select the Confirm icon to accept the change.
Time
From the Main Menu screen, select Configuration Settings. Select Global Settings. Touch the Scroll Up or
Down icon until Time is displayed and then select it. Time is displayed in 24-hour format. Touch the Move
Cursor icon to highlight the digit to change, then use the numeric touchpad to change the time. Select the
Confirm icon to accept the change.
Global Units of measure
The controller can be set to use either Imperial or Metric units of measure. The controller has been pre-set
to Imperial units. To change this setting;
From the Main Menu screen, select the Configuration Settings icon. Select Global Settings. Touch the
Scroll Up or Down icon until Global Units is displayed and then touch it. Select Metric. Select the Confirm
icon to accept the change.
Temperature Units of measure
The controller has been pre-set to Fahrenheit. To change this setting to Celsius, select the Configuration
icon from the Main Menu screen. Select Global Settings. Touch the Scroll Up or Down icon until
Temperature Units is displayed and then touch it. Select oC to change the units to Celsius. Select the
Confirm icon to accept the change.
HVAC Mode
The controller has been pre-set to Enabled. Do not disable HVAC mode.
Language
The controller language default setting is English. To change this setting;
From the Main Menu screen, select the Configuration Settings icon. Select Global Settings. Select the
Scroll Down icon until the English word “Language”is displayed and then touch it. Select the Scroll Down
icon until the language you wish to use is displayed and select it. Select the Confirm icon to change all
menus to your language.
5.2.2 Security Settings
This menu determines whether the password feature of the controller is enabled or disabled and allows you
to customize the password to your own value. When Security Settings are disabled, any user may view and
change any setting. When Security Setting are enabled, any user can view, but cannot change setting unless
they log in with Password. Controllers are shipped with Security Settings disabled.
To enable Security Settings, select the Configuration icon from the Main Menu screen. Touch the Scroll
Up or Scroll Down icons until Security Settings is displayed. Select Security Settings then Security. To
enable Security, the default Access Code 5555 must be entered first, then select Enabled. Confirm
selection by selecting the Confirm icon. (This should be changed if Security is enabled.) When Security is
enabled the controller requires immediate use of a password to calibrate or change settings. Once finished
making changes, log out to prevent unauthorized changes by someone else. The controller will
automatically log out after 10 minutes of inactivity.

14
Local Password
Enable Security. Select Local Password from Menu. The user can enter their own Local Password (up to
10 digits). Accept the new Password by touching the Confirm icon. Record the new passcode and keep it
in a safe place. The Factory cannot reset forgotten or lost Local Passwords.
5.2.3 Display Settings
Note: Changing “Home” Screen display assignments may affect operation. Do not attempt to
modify the settings without prior approval from Evapco Water Systems.
Adjust Display
From the Main Menu screen, select Configuration Settings. Select Display Settings. Touch the Scroll
Down icon until Adjust Display is observed and select it. Adjust Brightness and contrast slide bar to
achieve desired appearance. When complete select the Confirm icon to accept the change.
Key Beep
Key Beep factory default setting is disabled. To enable, select Configuration on the Main Menu. Select
Display Settings. Touch the Scroll Down Button until Key Beep is displayed and select. Select Enabled
and press the Confirm icon to accept the change.
5.2.4 File Utilities
The controller collects and stores data for user download to a standard USB flash drive. The controller has
three logs, Datalog, Event Log, and Reset Log. All files are in a CSV format that may be opened in a
spreadsheet such as Microsoft Excel.
Datalog
Contains the following data taken at 1-hour intervals for the past two months:
Conductivity
Conductivity Set Point Temperature
Water Meter 1 and 2 Totals (if equipped)
After two months, the oldest data will be overwritten with new data. The file will always
contain the last two months of data.
Event Log
Records set point changes, user calibrations, alarms, relay status changes (noted by change from 0
to 1 in log), file exports, etc.
System Log
This records hardware changes, automatic calibrations, power loss, etc..
Data Log Range
The controller default setting is 2 months. To change, select Configuration from the Main Menu screen.
Select File Utilities. Select Data Log Range. Ranges from “Since Previous”to 3 Months are available for
the User to select. Touch the desired range and select the Confirm icon to accept.
Log Frequency
The controller default setting is 1 hour. To change, select Configuration from the Main Menu screen.
Select File Utilities. Select Log Frequency. The controller data log frequency selections range from 15
minutes to 1 Day.

15
Export; Data Log File, Event Log, System Log
Place a USB flash drive with at least a 10 MB capacity into the USB port located on the bottom of the
Pulse~Pure panel. Select the log you wish to export (Data Log, Event Log or System Log) from the File
Utilities menu on the controller display. Touch the confirm icon when you are ready to export the file to
the USB flash drive. Multiple logs can be exported to the same USB stick. The controller will display the
progress of the file download process. If the file was successfully copied to the USB disk the controller
will display Transfer Success.
Export/Import User Configuration
These functions allow the user to export a file that contains controller settings (e.g., conductivity set point) to
a standard USB flash disk drive for system backup or import to another Pulse~Pure Integrated Controller.
Do not attempt to import user configuration filesfrom equipment other than Pulse~PureIntegrated
Controllers. Damage to the program may result. User configuration files are in a WCF format. These files are
not viewable with standard software programs. Keep track of any field changes made to controllersettings.
Export
The USB flash drive used for this process must be free of any other files or programs. A safe practice to
ensure success is to format the USB drive before exporting the configuration file. Place a USB flash
drive with at least 10 MB capacity into the USB port located on the bottom of the Pulse~Pure panel.
From the File Utilities menu select Export User Configuration File. Touch the confirm icon when ready
to export the file. The controller will display the progress of the download progress. When the file is
successfully exported to the USB stick the controller will display Transfer Success.
Import
Using the USB flash drive containing the user configuration file, insert into the USB port located on the
bottom of a Pulse~Pure panel. Select Import User Configuration file from the File Utilities menu.
Touch the confirm icon when you are ready to import the file from the USB drive. The controller will
display the progress of the download progress. When the file has been successfully imported, the
controller will display Transfer Success. The controller will go through a re-initialization process. This
may take a few minutes, do not switch controller off during this process. When completed, the
controller will return to the Home Screen.
When export or import of files has been completed, be certain to reseat weather cover over USB
port to maintain weather tight protection of panel.
5.2.5 Controller Details
Controller Serial Number and Software Version may be needed to facilitate troubleshooting.
Controller Serial Number
From the Configuration Menu scroll down to find Controller Details. Select controller details. Serial
number may be viewed from this screen.
Software Version
From the Configuration Menu scroll down to find Controller Details. Select controller details. Software
Version may be viewed from this screen.

16
5.3 Inputs
5.3.1 Conductivity
The controller has been configured by Evapco for an electrodeless conductivity sensor. The sensor input is
defined as ECond (S11) in the controller programming. Changing this designation may affect its operation in
the field.
Field Configurable Settings
Item
Factory Default Setting
LoLo Alarm
0
Low Alarm
0
High Alarm
15000
HiHi Alarm
15000
From the Home Screen, press ECond (S11) menu item. Select the tool icon, located on the lower right side of
display. Select the item you wish to configure. Using the keypad on the screen display enter the alarm value.
When configuration is complete select the Confirm icon to save.
Do not attempt to modify other settings associated with this sensor input without prior approval from Evapco
Water Systems.
See Figures 4 and 5 for wiring connections.
Electrodeless Sensor Calibration
Open Air (Zero) Calibration
This menu is used to calibrate the sensor to read zero when it is dry.Air calibration should be conducted during
system commissioning or when installing a new sensor. The sensor must be dry and in air when performing
this procedure.
From the Home screen, touch ECond (S11), select the Calibrate icon, and select Open Air Calibration from the
calibration menu. Select the Confirm icon to disable control. The controller will automatically determine the
correct Air offset wait until “Calibration Successful” is displayed on the touch screen before proceeding. Select
the Confirm icon to save calibration results. Touch the Confirm icon to return the sensor to the process. Place
the probe in the probe tee and initiate water flow. Continue with One-point Process Calibration
One-point Process Calibration
Use a calibrated conductivity meter to determine the actual conductivity of the cooling water. Select the
Calibrate icon from the ECond (S11) menu. Touch One-point Process Calibration from the menu. Enter the
actual cooling water conductivity value and touch the Confirm icon.
5.3.2 Temperature
Temperature is measured by a thermistor within the electrodeless conductivity sensor. The temperature
sensor has been designated as (S12). Changing this designation or any input settings associated with this
sensor may affect its operation in the field.Do not attempt to modify settings associated with this sensor input
without prior approval from Evapco Water Systems.
The Temperature sensor has been calibrated prior to shipment. Should it be necessary to calibrate temperature,
use a calibrated thermometer to measure the fluid temperature and adjust the controller to match. From the
Home screen, select Temperature (S12). Select the Calibrate iconthen One Point Process Calibration. Enterthe
fluid temperature measured from the thermometer and touch the Confirm icon wait until “Calibration
Successful” is displayed on the touch screen. Select the Confirm icon to save calibration results.

17
5.3.3 Flow Switch (D1)
Digital Input (D1) has been reserved for the Flow Switch input. Changing this designation may affect
controller function. Refer to section 3.5.
Settings associated with this input have been preset atthe factory prior to shipment. When system pump is de-
energized (no water flow, switch is open) “No Flow”message is displayed on the Home Screen. “No Flow”
warning message also appears at the top of the Home Screen. When system pump is energized (water flow,
switch is closed) “FLOW” is displayed on the Home screen. Contact Evapco Water Systems before
adjusting settings associated with this input.
5.3.4 Water Meters (optional)
Digital Inputs D2 and D3 have been reserved for contacting head water meters (Flowmeters). Settings
have been configured at the factory.
Factory Default Settings:
Item
Setting
Volume/Contact
100 gallons
Flow Units
Gallons
Ensure the input being configured is connected to the correct point on the interface board. Water meter #1
is (D2), Water meter #2 is (D3).
To change the Factory default settings;
Select the Main Menu icon from the Home Screen.
Select the Inputs icon.
Select appropriate Flowmeter input (D2) or (D3).
Select the Tool icon to set measurement parameters.
Select the Tool icon to modify the Volume/Contact appropriate to the meter.
Select the appropriate units of volume flow will be measured. Gallons is the factory default unit. If
units of volume other than gallons is selected, the controller automatically performs conversion to
the volume unit selection.
5.3.5 Other Digital Inputs
Digital Inputs D4, D5 and D6 have been reserved for Pulse~Pure status functions. Do not attempt to
modify settings or designations associated with these inputs without prior approval from Evapco Water
Systems.
5.4 Outputs
Relayoutputs R1, R2, R3, R4 have been reserved for Pulse~Pure status functions. Do notattempt to
modify settings or designations associated with these inputs without prior approval from Evapco Water
Systems.
5.4.1 Bleed (R5)
When the controller measures a conductivity value equal to, or greater than, the Set Point the Bleed relay is
powered causing a connected valve to open. The relay remains powered until the conductivity measured is less
than the set point minus the dead band setting. For example, if the Set Point is 1000µS/cm and the Dead Band
is 50µS/cmthe bleed relay is energized, causing the connected bleed valve to open, when the measured
conductivity is ≥1000µS/cm. The relay remains powered until the measured conductivity is ≤950uS/cm.
The Bleed (Blowdown) relay is assigned to Relay 5 (R5). Changing this designation may affect its operation
in the field. Set point, Dead band and Hand/Off/Auto settings are available for field adjustment.

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Bleed Set Point
The Bleed Set point has been pre-set at the factory to 1000µS/cm. Upon start-up and commissioning of the
cooling systemthe Bleed Set Point must be adjusted to the Evapco recommended set point for the specific
project. The Evapco set point recommendation is found on the project’s PPF1.0 report. Contact Evapco Water
Systems for a copy of thereport if it is not available at the job site.
To adjust the set point value; select Outputs from the Main Menu. Scroll down the Outputs menu and select
Bleed (R5). Select the Toolicon. Select Setpoint. Using the keypad display enter desired set point.Select the
Confirm icon to save.
Bleed Deadband
The Deadband factory default setting is 50 µS/cm. To adjust the Deadband value; select Outputs from the Main
Menu. Scroll down the Outputs menu and select Bleed (R5). Select the Tool icon. Select Deadband. Using the
keypad display enter desired Deadband. Select the Confirm icon to save setting.
HOA
Selects the operating mode of the Bleed output; Hand (stays on for 10 minutes), Off (Stays off indefinitely),
Auto (Automatically operates Bleed output based on conductivity value). The Factory default setting for Bleed
output is Auto.
To change this setting for maintenance or troubleshooting; select Outputs from the Main Menu. Scroll down the
Outputs menu and Select Bleed (R5).Select the Tool icon. Select HOA Setting and make desired selection.
Select Return icon.
To prevent unintentional system water loss the Bleed valve has been assigned aHand Time limit of 10 minutes.
When placed in Hand mode, the Bleed relay willremain powered for a maximum of 10 minutes. After 10
minutes the relay automatically de-energizes to close valve.
To change this setting, select Outputs from the Main Menu. Scroll down the Outputs menu and Select Bleed
(R5).Select the Tool icon. Select HOA Setting. Scroll down the Bleed menu and select Hand Time Limit.
Using the keypad enter desired time. Select the Confirmicon to save setting.
Once task requiringHOA selection to be changed from Auto has been completed return the setting to
Auto.
5.4.2 Biocide Timer and Alarm Relay (R6)
Output relay (R6) may be used to manage operation of ancillary equipment such as chemical metering pumps or
power a device (visual or audible, not included) to warn that an alarm condition exists.
Timer (R6)
The Timer relay is used to control the circuit shown in Figure 4. Up to 10 separate event settingsmay be
programmed. Timer operation is specific to local site requirements. Site specific programming should be
performed at the site.