Anderson Guardian III Administrator Guide

The Guardian III
Farm Bulk Tank Recording Thermometer
MODEL 5541 - Basic
Installation & Operator’s
Manual
Form AIC2057
© March 2007
Revised: 11/24/09
GUARDIAN

Anderson Guardian
2
Note to Dealers: Once you have installed the Guardian and
initiated operation, please leave this manual with the dairy
producer.
Thank You,
Anderson Instrument

Anderson Guardian 3
Table of Contents
Field Wiring and Installation p. 4
I Overview p. 6
II Using Your Guardian Recording Thermometer p. 6
III Getting to Know Your Guardian p. 7
IV Regular Maintenance p. 8
Changing Your Chart p. 8
Chart Positioning p. 8
Changing the Felt Tip Pen on the Pen Arms p. 8
Changing the Rotation Time of the Chart p. 10
Calibration Check p. 11
Pen Alignment p. 12
V Troubleshooting p. 13
VI Spare Parts p. 14
VII Appendix p. 15
Programming Your Guardian
• Programming Overview p. 15
• Changing Parameters in Program Mode p. 15
• Main Menu p. 15
• Program Menu Flowchart p. 16
• Program Menu Parameters p. 17
Alarm and Event Pen Guide p. 18
Specications p. 19
• Inputs p. 19
• Relay Outputs p. 19
• Recording p. 19
• Operator Interface p. 19
• Power Requirements p. 19
• Construction p. 20
• Environmental and Operating Conditions p. 20
• General Information p. 20
• Warranty p. 20
• Agency Approvals p. 20
• Install p. 20
VIII Warranty p. 21

Anderson Guardian
4
FIELD WIRING AND INSTALLATION
Loosen Four
Screws To
Allow Access
Panel To
Be Removed
View With Access Cover Installed View With Access Cover Removed
Motherboard
Terminal Connections
Relay Board
Terminal Connections
AC Field Power
AC Wiring Harness
Running From Relay
Board To Mother Board
Wash Line or Tank 2*
Temperature
Probe
Not Used
Relay #1
(Dry Contact)
Relay #2
(Dry Contact)
Not Used
Not Used
Not Used
Not Used
Not Used
24 VDC For
Light Beacon
4
3
2
1Tank 1 Temperature*
Probe
TB-2 3 WIRE RTD
GREEN
RED
WHITE
TB-1 POWER
AC-NEUTRAL
AC-NEUTRAL
AC-LINE
AC-LINE
TB-1B POWER
Bottom of case has
pre-drilled wiring penetrations.
It is not recommended that
additional case penetrations
be made.
CAUTION
BE SURE ALL POWER
IS DISCONNECTED
PRIOR TO MAKING
WIRING CONNECTIONS
NOTE
FOR PROPER
CONNECTION, IT IS
RECOMMENDED ALL
WIRE TERMINATIONS
BE STRIPPED AND
SOLDER TINNED
Light Beacon
Typical Wiring
TB-1 24 VDC
+24 VDC
-24 VDC
TB-8 RELAY #1
NORM CLOSED
COMMON
NORM OPEN
TB-7 RELAY #2
NORM CLOSED
COMMON
NORM OPEN
Light beacon is provided with a
wall mount bracket.
TB3-3 WIRE RTD
WHITE
GREEN
RED
1
2
3
4
J2-NOT USED
NOT USED
2
1
Not Used
Not Used
J8-NOT USED
TB10-NOT USED
3
2
1
2
1
NOT USED
NOT USED
+ 24 VDC
- 24VDC
TB2-NOT USED
TB1-24 VDC
TB3-NOT USED
TB4-NOT USED
NORM CLOSED
NORM CLOSED
COMMON
NORM OPEN
TB8-RELAY 1
TB7-RELAY 2
NORM OPEN
COMMON
TB6-NOT USED
TB5-NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
Power Up Procedure
Cover plate
in place
Cover plate
removed
Access to
Run/Program
Switch
MODE
RUN
PROG/
CAL/
TEST
ALRM
PEN 2
ALARM
INDICATOR
START TIME
ALRM
PEN 2
ALARM
INDICATOR
START TIME
Tank 1 Beacon
Optional Tank 2
or Wash
Line Beacon

Anderson Guardian 5
Loosen Four
Screws To
Allow Access
Panel To
Be Removed
View With Access Cover Installed View With Access Cover Removed
Motherboard
Terminal Connections
Relay Board
Terminal Connections
AC Field Power
AC Wiring Harness
Running From Relay
Board To Mother Board
Wash Line or Tank 2*
Temperature
Probe
Not Used
Relay #1
(Dry Contact)
Relay #2
(Dry Contact)
Not Used
Not Used
Not Used
Not Used
Not Used
24 VDC For
Light Beacon
4
3
2
1Tank 1 Temperature*
Probe
TB-2 3 WIRE RTD
GREEN
RED
WHITE
TB-1 POWER
AC-NEUTRAL
AC-NEUTRAL
AC-LINE
AC-LINE
TB-1B POWER
Bottom of case has
pre-drilled wiring penetrations.
It is not recommended that
additional case penetrations
be made.
CAUTION
BE SURE ALL POWER
IS DISCONNECTED
PRIOR TO MAKING
WIRING CONNECTIONS
NOTE
FOR PROPER
CONNECTION, IT IS
RECOMMENDED ALL
WIRE TERMINATIONS
BE STRIPPED AND
SOLDER TINNED
Light Beacon
Typical Wiring
TB-1 24 VDC
+24 VDC
-24 VDC
TB-8 RELAY #1
NORM CLOSED
COMMON
NORM OPEN
TB-7 RELAY #2
NORM CLOSED
COMMON
NORM OPEN
Light beacon is provided with a
wall mount bracket.
TB3-3 WIRE RTD
WHITE
GREEN
RED
1
2
3
4
J2-NOT USED
NOT USED
2
1
Not Used
Not Used
J8-NOT USED
TB10-NOT USED
3
2
1
2
1
NOT USED
NOT USED
+ 24 VDC
- 24VDC
TB2-NOT USED
TB1-24 VDC
TB3-NOT USED
TB4-NOT USED
NORM CLOSED
NORM CLOSED
COMMON
NORM OPEN
TB8-RELAY 1
TB7-RELAY 2
NORM OPEN
COMMON
TB6-NOT USED
TB5-NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
Power Up Procedure
Cover plate
in place
Cover plate
removed
Access to
Run/Program
Switch
MODE
RUN
PROG/
CAL/
TEST
ALRM
PEN 2
ALARM
INDICATOR
START TIME
ALRM
PEN 2
ALARM
INDICATOR
START TIME
Tank 1 Beacon
Optional Tank 2
or Wash
Line Beacon
Loosen Four
Screws To
Allow Access
Panel To
Be Removed
View With Access Cover Installed View With Access Cover Removed
Motherboard
Terminal Connections
Relay Board
Terminal Connections
AC Field Power
AC Wiring Harness
Running From Relay
Board To Mother Board
Wash Line or Tank 2*
Temperature
Probe
Not Used
Relay #1
(Dry Contact)
Relay #2
(Dry Contact)
Not Used
Not Used
Not Used
Not Used
Not Used
24 VDC For
Light Beacon
4
3
2
1Tank 1 Temperature*
Probe
TB-2 3 WIRE RTD
GREEN
RED
WHITE
TB-1 POWER
AC-NEUTRAL
AC-NEUTRAL
AC-LINE
AC-LINE
TB-1B POWER
Bottom of case has
pre-drilled wiring penetrations.
It is not recommended that
additional case penetrations
be made.
CAUTION
BE SURE ALL POWER
IS DISCONNECTED
PRIOR TO MAKING
WIRING CONNECTIONS
NOTE
FOR PROPER
CONNECTION, IT IS
RECOMMENDED ALL
WIRE TERMINATIONS
BE STRIPPED AND
SOLDER TINNED
Light Beacon
Typical Wiring
TB-1 24 VDC
+24 VDC
-24 VDC
TB-8 RELAY #1
NORM CLOSED
COMMON
NORM OPEN
TB-7 RELAY #2
NORM CLOSED
COMMON
NORM OPEN
Light beacon is provided with a
wall mount bracket.
TB3-3 WIRE RTD
WHITE
GREEN
RED
1
2
3
4
J2-NOT USED
NOT USED
2
1
Not Used
Not Used
J8-NOT USED
TB10-NOT USED
3
2
1
2
1
NOT USED
NOT USED
+ 24 VDC
- 24VDC
TB2-NOT USED
TB1-24 VDC
TB3-NOT USED
TB4-NOT USED
NORM CLOSED
NORM CLOSED
COMMON
NORM OPEN
TB8-RELAY 1
TB7-RELAY 2
NORM OPEN
COMMON
TB6-NOT USED
TB5-NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
Power Up Procedure
Cover plate
in place
Cover plate
removed
Access to
Run/Program
Switch
MODE
RUN
PROG/
CAL/
TEST
ALRM
PEN 2
ALARM
INDICATOR
START TIME
ALRM
PEN 2
ALARM
INDICATOR
START TIME
Tank 1 Beacon
Optional Tank 2
or Wash
Line Beacon
Loosen Four
Screws To
Allow Access
Panel To
Be Removed
View With Access Cover Installed View With Access Cover Removed
Motherboard
Terminal Connections
Relay Board
Terminal Connections
AC Field Power
AC Wiring Harness
Running From Relay
Board To Mother Board
Wash Line or Tank 2*
Temperature
Probe
Not Used
Relay #1
(Dry Contact)
Relay #2
(Dry Contact)
Not Used
Not Used
Not Used
Not Used
Not Used
24 VDC For
Light Beacon
4
3
2
1Tank 1 Temperature*
Probe
TB-2 3 WIRE RTD
GREEN
RED
WHITE
TB-1 POWER
AC-NEUTRAL
AC-NEUTRAL
AC-LINE
AC-LINE
TB-1B POWER
Bottom of case has
pre-drilled wiring penetrations.
It is not recommended that
additional case penetrations
be made.
CAUTION
BE SURE ALL POWER
IS DISCONNECTED
PRIOR TO MAKING
WIRING CONNECTIONS
NOTE
FOR PROPER
CONNECTION, IT IS
RECOMMENDED ALL
WIRE TERMINATIONS
BE STRIPPED AND
SOLDER TINNED
Light Beacon
Typical Wiring
TB-1 24 VDC
+24 VDC
-24 VDC
TB-8 RELAY #1
NORM CLOSED
COMMON
NORM OPEN
TB-7 RELAY #2
NORM CLOSED
COMMON
NORM OPEN
Light beacon is provided with a
wall mount bracket.
TB3-3 WIRE RTD
WHITE
GREEN
RED
1
2
3
4
J2-NOT USED
NOT USED
2
1
Not Used
Not Used
J8-NOT USED
TB10-NOT USED
3
2
1
2
1
NOT USED
NOT USED
+ 24 VDC
- 24VDC
TB2-NOT USED
TB1-24 VDC
TB3-NOT USED
TB4-NOT USED
NORM CLOSED
NORM CLOSED
COMMON
NORM OPEN
TB8-RELAY 1
TB7-RELAY 2
NORM OPEN
COMMON
TB6-NOT USED
TB5-NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
NOT USED
Power Up Procedure
Cover plate
in place
Cover plate
removed
Access to
Run/Program
Switch
MODE
RUN
PROG/
CAL/
TEST
ALRM
PEN 2
ALARM
INDICATOR
START TIME
ALRM
PEN 2
ALARM
INDICATOR
START TIME
Tank 1 Beacon
Optional Tank 2
or Wash
Line Beacon
* Always be sure the power to
the unit is OFF before wiring a
sensor to the input terminals

Anderson Guardian
6
I Overview
The Guardian is a circular chart recording thermometer specically designed for dairy farm milking,
cooling, storage, and cleaning applications. It provides an “around the clock” record of critical
temperatures in the bulk tank, and in the milk line or COP sink. You can use this information to adjust
or troubleshoot your cooling, storage, and cleaning systems. Optimally cooled milk and clean tanks and
lines mean that your bacteria counts will diminish while you protect or even increase your prots.
II Using Your Guardian Recording Thermometer
Your new Guardian will have one (red) pen, dedicated to bulk tank temperature, and a second (black)
pen. This second pen can be used to monitor the temperature in the ll line during milking and cleaning,
or for a second bulk tank, if present. The chart is designed to rotate once every 24, 48, 72 hours, or 7
days, depending on normal pick-up schedule. The shaded green band on the chart shows the quality
range for milk once it has been cooled. If the pen line is outside the green quality band after the normal
cooling time, you can assess your system and take corrective action.
A “spiked” pen line on the chart shows the tank has been cleaned and indicates the time and temperature
of the cleaning cycle. A digital display indicates the temperature at all times, will cycle between pen
one and two temperatures once every three seconds.
Finally, all models are equipped with alarm relays that can be used for signaling problems. These
relays can be wired by your installer to an external light, horn, or auto-dialer to alert you of an over-
temperature condition so you can remedy it before it becomes critical.
An event pen located on the outer perimeter of the chart will record the state of the high alarm for each
pen. This function is useful when utilizing the high alarm to conrm proper wash temperatures.

Anderson Guardian 7
III Getting to Know Your Guardian
Latch
Chart hub clamp
NEMA 4X enclosure for
washdown applications
Platen
Tabs to hold
chart in place
Pen arms and felt
tip pens
Sealed
calibration
cover
Sensor probe
and wire
Scroll
Key
Keypad
LED Display

Anderson Guardian
8
Action
1. Open the door and press the SCROLL button.
2. Press the DOWN arrow button.
3. Lift the black chart hub clamp in the center
of the chart and remove the chart paper from
under the chart holder clips around the outside
of the chart. Try to avoid bending the pen
arm.
4. Place a new chart on the black chart hub
pin and align the correct time of day to the
START TIME marker (see picture on page 9).
Make sure the paper is placed under the black
tabs around the outside of the recorder.
5. Close the black chart hub clamp and then
press the DOWN arrow button.
The display will change back to the
temperature. Close the recorder door and
secure the latches.
Explanation
CC, Chart Change will appear on the display.
The pen will move to the outside perimeter of the
chart.
Allows the removal of the chart paper.
Installation of new chart paper.
The unit is now back in normal operation.
Keypad on the Guardian III
IV Regular Maintenance
You will need to change the chart on your Guardian regularly. Each chart is made for a specic time
period: 24, 48, or 72 hour, or 7 days. The recording thermometer is programmed at the factory for the
time period you specied when ordered. Usually the chart rotation time corresponds to the time between
milk pick-ups. For example, if your milk is picked up every other day, you should order a Guardian
recording thermometer with a 48-hour chart rotation time period. If you need assistance determining the
correct chart rotation time, call Anderson Instrument at 1-800-833-0081.
Changing Your Chart
5 EASY STEPS TO CHANGE YOUR CHART

Anderson Guardian 9
Changing the Felt Tip Pen on the Pen Arm
You will need to periodically change the felt tip pen on your Guardian. You will know this needs to
be done when the chart is moving, the pen is in contact with the paper but the line is either faint or
not printing at all.
Replacement pens
are available from
Anderson at 1-800-
833-0081. See the
“Customer Support
and Replacement
Parts” section for
part numbers when
ordering.
To change a pen,
simply slide the felt tip
marker off the end of
the metal pen arm.
Slide a new one on
until it “clicks” in place.
Chart Positioning
When placing a new chart on the Guardian, align the correct time of day to the “START TIME”
marker located on the left of the event pen.
1
2
1
2
Installation
Slide pen into
holder (1) and
push down (2) as
shown by arrows.
Removal
To replace, pull up
at back end (1)
and push out (2).
For five replacement pens, order the following:
Green # 60500401
Red #60500402
Note: Be sure to replace the pen cartridges with the same type (color) that was
removed. Be careful not to bend the pen arm while changing the pens.
START TIME
Note: Be sure to replace the pen cartridges with the same type(color) that
was removed. Be careful not to bend the pen arm while changing the pens.
For ve replacement pens, order the following:
Black #60500408
Red #60500402

Anderson Guardian
10
Changing the Rotation Time of the Chart
The chart rotation time is set at the factory before your Guardian is shipped. Rotation refers to
the amount of time it takes the chart to complete one full rotation. For example, if the rotation
time is set for 48 hours, it will take 48 hours for the chart to complete one full rotation.
To change the chart rotation time (i.e., from 48 hours to 7 days), follow this simple 11 step procedure:
1. Open the door to the Guardian recorder. On the front of the platen in the lower left hand corner is a
small cover held in place by a screw. Remove the screw and the cover to reveal the MODE switch.
Move the switch from the RUN position to PROG/CAL/TEST.
2. The display will read “Prog.” Press the DOWN arrow button.
3. The display will read “Pen-1.” Press the SCROLL button.
4. The display will read “Pen-2.” Press the SCROLL button. until the display reads “Chrt.”
5. Press the DOWN arrow button.
6. The display will read “ChSP.” Press the SCROLL button.
7. The existing rotation time period will be displayed (i.e., 48 hours). Press the UP or DOWN arrow
keys to step through the rotation time periods (24 hr., 48 hr., 72 hr., 7 day). Stop at your desired
rotation time.
8. Press the SCROLL button. The display will read ChSP.
9. Press the UP arrow button. The display will read Chrt.
10. Move the switch from the PROG/CAL/TEST position to the RUN position. Replace the small
cover over the MODE switch and secure with the screw provided.
11. Install the new replacement chart onto the instrument. Be sure to use the chart which corresponds
to the new chart speed that was just programmed. For example, if chart speed is programmed for 7
days, choose a 7-day chart. Close the door of the Guardian.
You are ready to go!
or

Anderson Guardian 11
Calibration Check
The Guardian is fully calibrated at the factory before it is shipped to you. There is a supplemental
procedure detailing the process for complete calibration of the Guardian. Please consult Anderson at
1-800-833-0081 or your Dealer for assistance with the calibration procedure.
By running the Calibration Check Procedure, the Guardian veries that the temperature displayed,
recorded temperature on the chart, and the sensor temperature are all in agreement.
EQUIPMENT REQUIRED (See illustration below)
• Guardian Recording Thermometer with Sensor Probe
• Ice Bath
• Thermometer
1. Using an agitated ice bath (bucket of 50% ice and 50% water that is stirred), completely submerge
the Guardian Sensor probe into the ice bath (bucket). The Guardian Recorder should be powered on.
2. After approximately ve minutes, check the ice bath with a thermometer, verifying that the ice
bath temperature is 32°F (0.0°C).
3. Verify that the reading on the display of the Guardian Recording Thermometer reads 32°F (0.0°C).
Also verify that the pen position of the recording thermometer is at 32°F (0.0°C).
4. With the display reading 32°F (0.0°C) and the pen reading 32°F (0.0°C) the verication is complete.
5. The recording thermometer calibration is veried and the probe can be placed back into the milk
tank thermowell.
6. If the pen does not match the LED display reading and the LED display reading is correct, a pen
alignment should be performed. Please see pen alignment section for adjustments.
7. If the recorder temperature on the chart and the LED display are the same but are not within .75°F
(1°C) of 32°F (0.0°C), an input calibration should be performed. Please consult Anderson at 1-800-
833-0081 or your Dealer for the calibration manual and for assistance with the calibration procedure.

Anderson Guardian
12
Pen Alignment (Positioning of pen on the chart)
Conduct a pen alignment when the sensor display and thermometer all agree but the red line on the chart
is off by more than .75°F (1°C).
NOTE: The “Calibration Seal” may need to be removed to access the Mode Switch to gain access to the
calibration section.
1. Open the door to the Guardian recorder. On the front of the platen in the lower left hand corner is a
small cover held in place by a screw. Remove the screw and the cover to reveal the MODE switch.
Move the MODE switch from the RUN position to the PROG position.
2. Press the SCROLL button until “CAL” is displayed.
3. Press the DOWN button and “inP” will be displayed.
4. Press the SCROLL button and “Chrt” will be displayed.
5. Press the DOWN button and “Pen” will be displayed.
6. Press the DOWN button once again and Pen Calibration is started.
7. During Pen Cal, the pen will drive to the center of the chart, then the pen will drive to the inner most
ring 180°F (82°C). The display will show “P1-Lo” (P2-Lo).
8. Using the UP or DOWN arrow buttons, adjust the pen positioning to the 180°F (82°C) division line.
9. Press the SCROLL button. The pen will drive to the 60°F (15.5°C) division on the chart. The
display will show “PCNT”.
10. Pressing the UP or DOWN arrows, adjust the pen position to the 60°F (15.5°C) division line.
11. Press the SCROLL button. The pen will drive to the outer most ring 30°F (-1°C). The display will
show “P1-HI” (P2-HI).
12. Pressing the UP or DOWN arrow, adjust the pen position to the 30°F (-1°C) division line.
13. Press the SCROLL button to save the new calibration values, and automatically start Pen 2
calibration.
14. Repeat steps 8 through 12 for pen 2 (green pen).
15. Move the MODE switch to the RIGHT position. Replace the small cover over the
MODE switch and secure with the screw provided.
If you have any additional questions concerning calibration, please consult Anderson at 1-800-833-0081.
or
or
or

Anderson Guardian 13
V Troubleshooting
Your Guardian has been carefully designed to provide years of reliable data, helping you to produce
quality milk. If you do have a problem though, call us at 1-800-833-0081.
The following is a checklist to help you troubleshoot common issues:
??? The chart is not rotating, pen does not print, and the LED display is not illuminating.
Checktoseethattheunitisproperlywired(seethe“WiringConnections”sectionofthe
installationmanual)andthatpowerisbeingappliedtotherecordingthermometer.
??? The chart is not rotating, there is no red or black line forming on the chart paper and the LED
display is illuminating.
Checktoseethattheblackcharthubclampinthecenterofthechartisinthedown(run)posi-
tion.Alsomakesurethattheprogramswitchbehindthesmallcalibrationplateisinthe“RUN”
  position.

NOTE: Switch located behind screw sealed plate.
??? The chart is rotating, there is no red or black line forming on the chart paper and the LED display
is illuminating.
Checktoseeiftheredfelttipistouchingthepaper.Ifnot,gentlybendthepenarmuntilthefelt
tipmakescontactwiththepaper.Ifthereisstillnoredline,checktoseeiftheredfelttipon
thepenarmisoutofink.Alsoverifythatthepencaphasbeenremoved.Seethesectiontitled
“ChangingtheRedFeltTipofthePenArm”forinstructionsonchangingthepen.
??? The chart is rotating, but there are two red and black lines forming a circle around the chart.
Youneedtochangethechart.Seethesectiontitled“ChangingyourChart”forchartchanging
instructions.
??? You are concerned that the Guardian (red and/or black pen) is not accurately recording milk
temperature.
 DoacalibrationcheckontheGuardian.See“CalibrationCheck”sectionintheRegularMain-
tenanceSectionofthismanual.
??? One of the pens has moved to the inner ring of the chart and the display for that pen reads HI.
 The RTD sensor for that channel has failed. Disconnect power from the unit, install a new sensor,
and reconnect the power.

Anderson Guardian
14
VI Spare Parts
Call your local dealer or Anderson Instruments Inc. at 1-800-833-0081 for service or ordering spare
parts.
CHARTS
24 hour / °F 00215709
48 hour / °F 00215710
72 hour / °F 00215711
7 day / °F 00215712
24 hour / °C 00215705
48 hour / °C 00215706
72 hour / °C 00215707
7 day / °C 00215708
ACCESSORIES
Red Pen Cartridge 60500402 (5 pk.)
Black Pen Cartridge 60500408 (5 pk.)
Pen Blade with screws 64430501
CONSUMABLES

Anderson Guardian 15
VII Appendix
Programming Your Guardian
• Programming Overview
Your new Guardian recorder should be installed by a qualied professional. Most parameters will be
factory programmed, or ne tuned at time of startup by the Installer. Future changes on items such as
recording time or real time clock are updated via menu items shown in this section.
If you have a questions, feel free to call your Installer, or Anderson directly at 800-833-0081 before
making program changes
• Changing Parameters in Program Mode
NOTE: When the MODE switch is placed in the Prog position the unit will stop rotating the chart and
relays will de-energize.
The recorder setup programming can only be accomplished when the mode slide switch is placed in the
PROG/TEST/CAL position, or the left position. This switch is located left of the display and is behind
a sealed cover.
In the PROGRAM/TEST/CAL mode, the keys will function as follows: (see page 30 for detailed
example).
SCROLL When a mode or section designation is displayed, SCROLL steps to the next mode
or section. When a parameter code is displayed, SCROLL will display the
corresponding parameter value. When a parameter value setting is displayed,
SCROLL will display the next parameter code.
DOWN ARROW When a mode or section designation is displayed, DOWN will enter that mode
or section. When a parameter code is displayed, DOWN will display the next
parameter value. When a parameter setting is displayed, the setting will
decrease, unless it is at a limit value.
UP ARROW When a mode or section designation is displayed, UP will have no effect. When
a parameter code is displayed, UP will revert back to the section designation.
When a parameter setting is displayed, the setting will be increased unless it is
at a limit value.
To enter the PROGRAM/TEST/CAL mode, the cover plate must be opened and the switch moved to
the up position. The unit will display Prog. Subsequent depressions of the SCROLL will cause the
unit to display TEST, then CAL, and then back to Prog (Program).
• Main Menu
ProG tESt CAL

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• Program Menu Flowchart

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• Program Menu Parameters
Guardian Menu Denitions
Pen 1 (Conguration values for pen 1)
• InPS Selection for Deg F or Deg C
• Icor Input correction factor used to adjust recorder display and pen to
match another reference device.
• dPOS Decimal position for recorder display
Pen 2 (Conguration values for pen 2)
• InPS Selection for Deg F or Deg C
• Icor Input correction factor used to adjust recorder display and pen to
match another reference device.
• dPOS Decimal position for recorder display
P1UH (Pen 1 Alarm Setpoints)
• P1LO* Low setpoint for Pen 1
• P1HI* High setpoint for Pen 1
P2UH (Pen 2 Alarm Setpoints)
• P2LO* Low setpoint for Pen 2
• P2HI* High setpoint for Pen 2
Chrt (Chart programming parameters)
• ChSP Chart speed (24hr, 48hr, 72hr, and 7 day)
rtC (Real time clock programming values)
• YEAr Value representing year “20XX”
• IIon Value representing month
• dAY Value representing day
• Hr Value representing hour
• IIIN Value representing minutes
Fid
• Fid1 First four digits of Farm Identication Number
• Fid2 Second four digits of Farm Identication Number
Boot
• Caution - this menu option for Factory Setup only
* See Alarm and Event Pen Guide

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Alarm and Event Pen Guide
Low (Milk Temp) Alarms
The Low alarm is used to monitor the temperature of milk in the bulk tank. The setpoint is generally set
at about 40 degrees, but for either channel, the setpoint is adjustable from 30°F (0°C) to 100°F (37°C).
Should the milk temperature rise above the setpoint, the alarm will be triggered, the alarm LED’s will
light on the display, and the relay will change to the energized state (Normally open contacts are closed).
Therefore, if an external alarm or beacon is to be wired to the relay, it should be wired to the normally
open contacts of the relays, as shown in the wiring instructions.
For any temperature(s) between 100°F (37°C) and 120°F (48°C), all alarms and event pen logic is
disabled. The relays are de-energized, the event pen remains in the “inward” position, and the alarm
LED’s on the display are not illuminated.
High (Wash Temp) Alarms
The high alarm is used to monitor the cleaning temperature of the tank(s) or pipeline. The setpoint is
generally set at about 130°F, but for either channel, the setpoint is adjustable from 120°F (48°C) to
180°F (82°C). The event pen is programmed to trip (move toward the outside of the chart) when this
setpoint is reached, providing a permanent record that the appropriate temperature was reached for
cleaning.
The relays used for the low alarm may also be used here, with the following logic:
As the temperature rises above the setpoint, the relay will energize. Therefore, if a beacon is wired to
alarm when the milk temperature is too hot, that same beacon will light when the wash temperature
setpoint is met. This provides a visual indication that the proper temperature was met. To help
differentiate these alarms, the alarm LED’s on the display are not lit at the high alarm setpoint.

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Specications
• INPUTS
Type Range
RTD 100 ohm Platinum -1°C to 82°C 30°F to 180°F
.00385 ohms/ohm/°C
Sensor Fault Detection LED displays “9999” and pen goes upscale if sensor break is
detected
LED displays “Hi” after 15-30 seconds
Measurement Error RTD: ±0.25% of span ± 1 degree
• RELAY OUTPUTS
SPDT, contacts rated 5 amps resistive at 115
VAC, 2.5 amps resistive at 230 VAC, 1/8 HP at 230 VAC
(single phase), 250 VA at 115/230
• RECORDING
Pen Colors: Red (tank temp.), Black (wash cycle temp. or second tank
temp) Red Event Pen (moves to chart periphery when
minimum, adjustable wash temperature is met)
Chart Size: 10” (highlighted green zoned chart)
Chart Rotation: User congurable; 24-, 48-, 72-hours, or 7 days
Chart Span: 0° to 80° C (30° to 180°F) reverse range, low temperature on
outside of chart
Chart Recording Accuracy: ±0.75°F or 0.5% of chart span reference accuracy
Chart Rotation Accuracy: 0.5% of rotation time, assuming all backlash removed
• OPERATOR INTERFACE
Display: Four digits 0.56” high, red seven-segment LED
Keypad: Three keys for programming and unit operation
• POWER REQUIREMENTS
Line Voltage: 90-264 VAC, 50/60 Hz

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• CONSTRUCTION
Enclosure: Injection moulded case & cover with acrylic window
NEMA Rating: NEMA 4X standard
Conduit Openings: Four; on bottom of unit
Mounting: Wall; brackets provided
Dimensions: 13.5” wide X 15.5” high X 6.6” deep
Weight: 12 lbs. maximum
• ENVIRONMENTAL AND OPERATING CONDITIONS
Operating Temperature Range: 0°C to 50°C (32°F to 122°F)
• GENERAL INFORMATION
Data Backup: EEPROM for conguration parameters and calibration data
• WARRANTY
Two Year Warranty
• AGENCY APPROVALS
UL Approved for USA and Canada - UL 61010-1, 2nd Edition,
QUYX - File E155886
• INSTALL
Recorder and Sensor Pre-calibrated