Kestrel 5000 User manual

USER GUIDE
Kestrel 5000 Environmental Meter
Kestrel 5100 Racing Weather Meter
Kestrel 5200 Professional Environmental Meter
www.kestrelinstruments.com

2
CAUTION
!
WARNING
!
Your Kestrel Weather/Environmental Meter is designed to provide accurate
measurement of current conditions only. Depending on your location and
environment, conditions may change rapidly.
Rapid temperature and humidity changes (i.e., moving your meter from indoors to outdoors) may cause inaccurate readings of
temperature and humidity as well as all readings that rely on either of these values. Before relying on readings from your Kestrel Meter, be
sure to either a) force air ow over the sensors by waving or slinging your meter through the air; or b) wait until your unit’s readings have
stabilized, indicating it has equilibrated to its new environment.
To maximize the accuracy and reliability of your readings:
• Ensure that your Kestrel Meter is in good repair and within factory calibration.
• Take readings frequently and carefully according to the guidelines above.
• Allow your meter’s readings to stabilize after signicant changes in temperature or humidity (i.e., changing location from indoors
to outdoors).
• Allow a margin of safety for changing conditions and reading errors (2-3% of reading is recommended).
Use care and good judgment when referring to your Kestrel Meter to make any decisions regarding safety,
health or property protection.
To reduce the risk of injury or death to persons, read and follow these guidelines!
Your Kestrel Weather/Environmental Weather Meter may provide one or more of these measurements relating to estimation of danger of
injury to people or animals from heat or cold: Heat Stress Index, Wind Chill Index, Wet Bulb Globe Temperature (“WBGT”), Thermal Work
Limit (“TWL”). Note that guidance tables based on these values are based on typical physiological response. Certain individuals or animals
may be more susceptible to harm relating to environmental conditions and require additional precautions. For example, very young or
elderly individuals, individuals with asthma, and individuals who have not become acclimatized to hot conditions are likely to be more
prone to heat injury.
• Know yourself and the individuals and items you are responsible for.
• Where appropriate, seek the guidance of a medical professional.
• Know what to do in the event of heat or cold injury and be prepared with supplies.
• In the case of heat illness, remember the rule – “Cool rst, transport second.” An inexpensive ice bath can mean the dierence
between life and death.
Your Kestrel Weather/Environmental Meter is not a medical device. It is only one source of information and
must be employed with care and good judgment.

3
We recommend that ONLY Lithium AA batteries
be used in your Kestrel Weather/Environmental
Meter to provide the widest operating
temperature range and to avoid damage caused
by leaking lead-acid batteries. If you must use
conventional AA batteries, please do not store
your Kestrel Meter with the batteries in place.
Damage caused by battery corrosion is not
covered under warranty.
WARNING: Lithium is a toxic substance and
ingestion may cause serious injury or death. Keep
lithium batteries out of the reach of children. If
swallowed, immediately seek medical help. Have
doctor phone 24-hour hotline at [phone],
call collect if necessary. Dispose of batteries
properly and according to local regulations. Do
not puncture or burn batteries. If the battery
compartment does not close securely, stop using
the product and keep it away from children.
BATTERIES
This User Guide contains the information you need
to get started using your Kestrel meter. For in-depth
explanations, FAQ’s, chat and e-mail support, visit
www.kestrelinstruments.com.
CONTACT US AT
[phone] Toll Free North America
[phone]
Email: [e-mail]
Facebook: Fb.com/KestrelMeters
Twitter: @KestrelWeather

4
CONTENTS
Measurements and Features............................................. 5
Getting to Know Your Kestrel............................................ 7
Buttons .................................................................................. 8
Kestrel Options Menu......................................................... 8
Kestrel Menu Navigation ................................................... 9
Weather Mode Screen ........................................................10
Getting Started .................................................................... 11
Altimeter and Barometer ...................................................12
Using Min/Avg/Max ............................................................13
Connecting to Devices Using LiNK................................... 14
Connecting to Computers Using USB Cable...................14
Creating, Viewing, & Exporting Data Logs......................15
Measuring Air Flow ............................................................17
Measuring Evaporation Rate............................................. 17
Weather Glossary.................................................................18
Impeller Replacement ........................................................20
Warranty Certicate............................................................ 21

5
MEASUREMENTS Icon 5000
Environmental
5100
Racing
5200
Professional
5500
Weather
5400
HST
Wind Speed | Air Speed
(mph | fpm | Bft | m/s | km/h | kt) • • • • •
Temperature (˚F | ˚C) • • • • •
Wind Chill (˚F | ˚C) • • • • •
Relative Humidity (%) • • • • •
Heat Stress Index (˚F | ˚C) • • • • •
Dewpoint Temp (˚F | ˚C) • • • • •
Wet Bulb Temp (˚F | ˚C) • • • • •
Station Pressure (inHg | hPA | psi | mb) • • • • •
Barometric Pressure (inHg | hPA | psi | mb) • • • • •
Altitude(m | ft ) • • • • •
Density Altitude (m | ft) • • • • •
Wind Direction (Cardinal Points, Degrees) • o
Crosswind
(mph | fpm | Bft | m/s | km/h | kt) • o
Headwind | Tailwind
(mph | fpm | Bft | m/s | km/h | kt) • o
ooptional

6
MEASUREMENTS Icon 5000
Environmental
5100
Racing
5200
Professional
5500
Weather
5400
HST
Moisture Content | Humidity Ratio (Grains) (gpp, g/kg) • •
Air Density (lb/ft3, kg/m3)• •
Relative Air Density (RAD) (%) • •
Evaporation Rate (lb/ft2/hr, kg/m2/hr) •
Volume Air Flow (cfm, m/hr, m/m, m/s, L/s) •
Delta T (˚F | ˚C) •
Wet Blub Globe Temperature (WBGT) (˚F | ˚C) •
Thermal Work Limit (TWL) (˚F | ˚C) •
Globe Temperature (˚F | ˚C) •
Naturally Aspirated Wet Bulb Temp (˚F | ˚C) •
FEATURES 5000
Environmental
5100
Racing
5200
Professional
5500
Weather
5400
HST
LiNK Connectivity & Kestrel LiNK Mobile App N/A o o o o o
Backlit Display switchable white or
Night-Vision preserving red
N/A • • • • •
ooptional

7
GETTING TO KNOW YOUR KESTREL
BACK
DATA TRANSFER
PORT
SERIAL NUMBER
AA BATTERY (1)
(Lithium recommended)
LANYARD
ATTACHMENT
PRESSURE
SENSOR
FRONT
OPTIONS/EXIT
POWER
BACKLIGHT
SCROLL/ADJUST
TEMPERATURE
SENSOR
REPLACEABLE
IMPELLER
SELECT
BATTERY DOOR LATCH
HUMIDITY SENSOR
BATTERY DOOR
IMPELLER COVER
CAPTURE
SUNLIGHT
READABLE
DISPLAY

8
BUTTONS
Button Name Function
POWER Turns Kestrel on and o.
Press for on, hold for two
seconds to turn o.
OPTIONS/
EXIT
Enter the main Options
menu or exit a menu.
SELECT Access Settings on any
measurement screen or
select a menu option to
enter its submenu or conrm
a task.
UP/DOWN Scroll up and down through
measurement screens or
menus. Adjust values when
entering text in name
menus.
LEFT/
RIGHT
Scroll options left and
right. Adjust values in
combo menus and setting
submenus.
CAPTURE In Weather Mode, manually
capture all environmental
values.
BACK-
LIGHT
Turn backlight on or o.
(Also turns o automatically
after one minute.)
Most system-wide and weather setup options are accessed
from the main Options menu by pressing the button
from any Weather Measurement Screen or the main
Targeting Screen.
• BLUETOOTH
» Bluetooth On/O
• DATA PORT
• MEMORY OPTIONS
» Clear Log
» Auto Store
» Store Rate
» Overwrite
• GRAPH SCALE
• DISPLAY
» Auto Shutdown
» Contrast
» Backlight
• SYSTEM
» Time & Date
» Measurements
» Units
» Lang
» Batt
» Factory Restore
• ABOUT
» Version
» Legal
KESTREL OPTIONS MENU

9
KESTREL MENU NAVIGATION
TYPES OF MENU ITEMS
»Tasks are executed by highlighting the eld and pressing Select.
»The presence of a submenu is indicated by a“…”following a eld.
» Highlight the eld and press Select to enter a submenu.
» Adjust the value of a Combo Field by pressing left or right.
» Enter the Combo Field sub menu by pressing select.
» Adjust a setting by pressing left or right.
» An arrow indicates there are additional elds o screen.
» Locked values are either driven by another value or cannot be edited on
the current screen.
» Locked values may have submenus which are entered by pressing select.
» Navigation buttons indicate available actions on the current screen.

10
Measurement
& Icon Units
WEATHER MODE SCREENS
Graph of Stored Data Log Data Point Value
Data Point Scroll Bar
Current Measurement Screen
Press SELECT to enter settings
menu for that measurement.
Min Ave Max Screen
Press SELECT to start, stop
and clear the Min/Avg/Max
tracking.
Data Graph Screen
Press SELECT to enter
the Data Log Detail Screen to
view logged data points.
Data Points Screen
Press LEFT/RIGHT to scroll through
data points. Press OPTIONS to exit
Data Log Details Screen.
MORE MEASUREMENTS
MORE MEASUREMENTS
Data Point Time Stamp
» The UP/DOWN buttons navigate between all weather
measurements set to“On” in Options|Measurements.
» The LEFT/RIGHT buttons scroll between the three
display screens for the measurement.
» The OPTIONS button exits the settings submenu
and Data Log Detail Screen.

11
1. INSTALL BATTERY. Slide the battery door latch and open
door. Insert the provided AA lithium battery as indicated
by the label. Replace the battery door, ensuring it“clicks”
fully into place.
2. POWER ON KESTREL. Press to power on Kestrel.
3. ENTER OPTIONS MENU. Press to enter the Options
Menu.
4. SET AUTO STORE RATE. Scroll to and select Memory
Options. Scroll to Auto Store and ensure it is set to ON.
Scroll to Store Rate and adjust to desired frequency of
automatic weather data logging.
5. SET OVERWRITE. Scroll to and select Memory Options.
Scroll to Overwrite and set to On to allow the data log to
wrap once full and to OFF to stop logging when full.
6. SET GRAPH SCALE. Scroll to and select Graph Scale. Scroll
to and select the desired measurement type. Adjust the
Set High and Set Low values to bound the desired display
values.
7. SET AUTO SHUTDOWN. Scroll to and select Display.
Scroll to Auto Shtdwn and choose a time window after
which the Kestrel will shut down without any button
presses.
8. SET BACK LIGHT COLOR. Scroll to and select Display.
Scroll to Backlight and set to either White or Red.
White is very bright and ideal for any dim light use. Red
is reduced brightness and a wavelength selected to
preserve adapted night vision for true dark operations.
9. SET DATE AND TIME. Scroll to and select System. Scroll
to and select Time & Date. Adjust the time and date.
GETTING STARTED
10. TURN ON/OFF MEASUREMENT SCREENS.
Scroll to and select System. Scroll to and select
Measurements. Set measurement screens to either
On or O as desired.
11. SET UNITS. Scroll to and select System. Scroll to and
select Units. To change all units select Global, then
set Global to Imperial or Metric, and then scroll to
Apply and select Go. To set units individually, scroll
to each measurement type in the Units submenu
and set to the desired units. Units can also be set in
the Settings menu for each measurement.
12. SET LANGUAGE. Scroll to and select Lang. Adjust
to desired language: English, Deutsche, Francais,
Espanol.

12
The Kestrel employs a stable, accurate pressure sensor to
measure station pressure, the unadjusted air pressure in
your location.
» To use your Kestrel to measure barometric pressure
(station pressure adjusted for local elevation), you
must enter a correct reference value for your altitude.
Accurate barometric readings require that no elevation
changes be made while taking measurements.
» To use your Kestrel to measure altitude changes
(changes in station pressure associated with changes
in elevation), you must enter a correct reference
value for your starting barometric pressure. Accurate
altitude readings depend on stable, weather related
barometric air pressure while measurements are taken.
» Synched values between the Altitude and Barometer
measurement screens allow reference value updates
on either screen to automatically update reference
values on the other.
Note! You cannot use your Kestrel as a barometer and altimeter
simultaneously.
ALTIMETER AND BAROMETER
SETTING REFERENCE VALUES ON BARO
MEASUREMENT SCREEN:
» Scroll to the Baro measurement screen and
select Settings.
» Adjust either the Altitude or the Barometric
Pressure value to a local, known value obtained
from a mapping reference, GPS, or accurate
weather station in the same location.
SETTING REFERENCE VALUES ON ALTITUDE
MEASUREMENT SCREEN:
» Scroll to the ALTITUDE measurement screen
and select Settings.
» Adjust either the Altitude or the Barometric
Pressure value to a local, known value obtained
from a mapping reference, GPS, or accurate
weather station in the same location.
Note! You should enter new reference values whenever
you are using the Altimeter or Barometer functions and
your location or the weather conditions have changed.

13
Pressing the right scroll button from any Current
Measurement Screen will open the Min/Avg/Max Screen.
The capture process is linked for all measurement screens,
capturing Min/Avg/Max values on one measurement
screen will capture Min/Avg/Max values over the same
time period for all measurements. Each new Min/Avg/Max
capture overwrites the previously captured value from all
measurements.
CAPTURING MIN/AVG/MAX VALUES:
» Scroll to the Min/Avg/Max Screen of the desired
measurement. This can be done by scrolling right from
the desired Current Measurement Screen or scrolling
vertically from another measurement’s Min/Avg/Max
Screen.
» Press Select to Start a new Min/Avg/Max capture.
» Press Select to Stop the capture time period and view
Min, Avg, and Max values.
» Press Select to Clear the Min/Avg/Max values.
USING MIN/ AVG/ MAX

14
All Kestrel 5 Series units can connect to a computer
via the Data Transfer Port using the USB Data
Transfer Cable available separately. Kestrel LiNK
software is available for Windows and Mac for
downloading logged weather data and installing
rmware updates.
CONNECTING TO A COMPUTER USING USB
CABLE:
» On your computer, follow the links at
www.kestrelinstruments.com to locate Kestrel
LiNK for PC or Mac and install on your computer.
» In the Options Menu of the Kestrel, scroll to Data
Port and set to On.
» Connect the USB Data Transfer Cable to the Data
Transfer Port on the back of the Kestrel unit.
» Insert the USB plug into an available USB port
on your computer and follow the instructions in
Kestrel LiNK for connecting to your unit.
CONNECTING TO COMPUTERS USING USB CABLE
If your Kestrel is marked LiNK on the bottom front label,
it can be connected wirelessly to other LiNK-compatible
devices. LiNK is powered by Bluetooth Smart®, also known
as Bluetooth® LE, which is available in most iOS devices
released after 2014 and Android devices released after
2015, as well as in a USB Dongle available from Kestrel
that supports connectivity to Windows and Mac OS
devices. LiNK-enabled Kestrel units can connect to mobile
devices running Kestrel LiNK to install rmware updates.
LiNK-enabled units can can be run wirelessly to computers
using the Kestrel Dongle.
CONNECTING TO A COMPUTER, MOBILE PHONE OR
TABLET:
» On your phone or tablet, follow the links at
www.kestrelinstruments.com to locate Kestrel LiNK
for iOS or Android in the App or Play store and install
on your mobile device.
OR
» On your computer, follow the links at
www.kestrelinstruments.com and install on your
computer. Insert your Kestrel USB Dongle (available
separately) into an open USB port.
» On the Kestrel, open the Options Menu and select
Bluetooth. Set Bluetooth to On. The Kestrel’s Status
will change to Available, indicating that it is available
for pairing with a computer or mobile device.
Note! LiNK range is typically 100 ft/30M line of sight. Shorter
distances should be expected if there are obstacles such as
walls or metal enclosures. Range is also impacted by the signal
strength of the other device.
CONNECTING TO DEVICES USING LiNK

15
» In the Memory Options sub menu scroll to
Overwrite and set to On to allow the data log to
wrap once full and O to stop logging when full.
» When Auto Store is set to On, the Kestrel unit
will automatically begin logging at the rate set in
Store Rate.
MANUAL DATA LOGGING:
» Individual data points can be added to the log at
any time by pressing the Capture button.
» Manual capture simply adds every measurement
to the data log at the capture time/date.
VIEWING LOGGED DATA ON THE KESTREL METER:
» Scroll to the Graph Data Screen of the desired
measurement. This can be done by scrolling right
from the desired Current Measurement Screen or
scrolling vertically from another measurement’s
Graph Data Screen.
» A graph of the most recently logged data points
will be displayed and continue to grow at the
selected store rate.
» To view individual data log points, or to view graph
data older than what is shown in the Graph Data
Screen, press Select to open the Data Log Detail
Screen. Scrolling left or right will move the bar
highlighting individual data points. Log values
are shown in the upper left and the time stamp is
shown along the bottom. Press Exit to return to the
Graph Data Screen.
In addition to taking live measurements, your Kestrel 5
Series weather meter is a powerful data logger. The Kestrel
will automatically create a time stamped data log of all
measurements at the logging interval you set. Additional
log points can also be captured manually. Logged data can
be accessed four ways:
» Viewed on the Kestrel Meter on the Data Graph Screen
and Data Log Detail Screens.
» Exported to an iOS or Android mobile device using the
Kestrel LiNK mobile apps available in the App Store
and Google Play Store. Requires a Kestrel LiNK-enabled
meter and a compatible Bluetooth® Smart/LE devices.
» Exported to a PC or Mac using Kestrel LiNK software and
a Kestrel USB Dongle (available separately). Requires a
Kestrel LiNK-enabled meter
» Exported to your Windows or Mac computer using
Kestrel LiNK software and a Kestrel USB Data Transfer
Cable (available separately). All 5 Series Kestrel meters
can connect to Kestrel LiNK using a Kestrel USB Data
Transfer Cable.
TURNING ON AND ADJUSTING AUTOMATIC DATA
LOGGING:
» In the main Options menu, scroll to and select Memory
Options. Scroll to and select Auto Store and set to ON.
Scroll to Store Rate and adjust to desired frequency of
automatic weather data logging.
CREATING, VIEWING, & EXPORTING DATA LOGS

16
Use one of the following two methods to connect your
Kestrel to your computer.
1. Connect your LiNK-enabled Kestrel Meter to your
computer wirelessly:
» Purchase a Kestrel LiNK Dongle and install in your
computer’s USB port.
» Follow the instructions in the“Pairing with a
Computer, Mobile Phone or Tablet”section of this
manual along with the Kestrel LiNK program to pair
the Kestrel and your computer.
2. Connect your Kestrel 5 Series Meter to your
computer using a Kestrel USB Data Transfer Cable:
» Purchase a Kestrel USB Data Transfer Cable.
» In the main Options menu, scroll to and select Data
Port and set to On.
» Insert the USB Data Transfer Cable into an open USB
port and the Data Transfer Port on the back of the
Kestrel unit.
Once connected
» Follow the directions in the Kestrel LiNK program to
conrm the connection.
» In the Kestrel LiNK software, choose a data log from the
Logs window and click on the Export to File button.
» Choose a le export directory on your computer and
click on the Ok button.
» To change the resolution of the graph, scroll to and
select Graph Scale in the Options menu. Scroll to
and select the desired measurement type. Adjust the
Set High and Set Low values to bound the desired
display values.
EXPORTING DATA LOGS TO A MOBILE DEVICE:
» Follow the links at www.kestrelinstruments.com to
locate Kestrel LiNK in the App or Play store and install
on your mobile device.
» Follow the directions in the Kestrel LiNK app and
in the section of this manual titled Pairing with a
Computer, Mobile Phone or Tablet: to connect the
mobile device to the Kestrel.
» The Kestrel’s new logged data will automatically be
added to the app’s log whenever the devices are
connected.
» To export logged data to a .csv le for further analysis,
go to the Stats page of the app or the Manage Data
Logs screen on the Manage page.
» Hit the Export Data button. Choose a method for
exporting the data and follow the in-app prompts
to send.
EXPORTING DATA LOGS TO A COMPUTER:
» Follow the links at www.kestrelinstruments.com
to download Kestrel LiNK to a PC or Mac computer.
Install.

17
Professional Units Only
Kestrel Professional Meters can calculate air ow
through a duct by combining user input information
about the size and shape of the duct with the
measured air velocity. In addition to reading the
instantaneous Air Flow o the main measurement
screen, a more accurate result may be obtained
by capturing an average air ow on the Min/Ave/
Max screen while traversing the duct. Capturing an
average can be particularly helpful when measuring
ducts with registers or dimensionally uneven air ow.
» From any current measurement screen, scroll to
AIR FLOW and select Settings.
» Set Shape to match the shape of the duct, either
Rect (rectangle) or Circle.
» Input the dimensions of the duct by setting
Length and Width for a Rectangle or Diameter
for a Circle duct and press exit.
MEASURING AIR FLOW
Professional Units Only
Kestrel Professional Meters can calculate a concrete
evaporation rate (ACI 308) by combining a user input
concrete temperature with measured air temperature,
wind speed and relative humidity. Concrete mix
temperature is generally measured with a probe or
infrared thermometer and should be read at the time of
making the evaporation rate measurement.
MEASURING EVAPORATION RATE:
» From any current measurement screen, scroll to EVAP
and select Settings.
» Measure the temperature of the concrete mix and set
Mix Temp to the correct value, then press exit.
» To take a reading, hold the unit vertically,
approximately 20 inches above the surface of the
concrete while facing the rear of the unit directly
into the wind. To avoid inaccurate Evaporation Rate
readings due to thermal loading it is best to shade
the Kestrel. (Be sure the source of shade is not
obstructing the wind speed measurement.)
» The ACI recommends taking a 6-10 second average of
the evaporation rate to account for uctuating wind
speeds. To measure an average Evaporation Rate,
scroll right from the Current Measurement Screen to
the Min/Ave/Max Screen and press select to manually
start and stop a capture.
MEASURING EVAPORATION RATE

18
DIRECTION – Compass heading in true or magnetic North.
WIND SPD – Wind Speed is the measurement of the wind
passing through the impeller. For greatest accuracy, point the
back of the Kestrel directly into the wind.
CROSWND – Crosswind uses the internal compass and a user
selected heading to calculate the crosswind component of
the full wind.
HEADWND – Headwind uses the internal compass and a
user selected heading or target direction to calculate the
headwind component of the full wind.
TEMP – Ambient Temperature is the temperature measured
at the thermistor. For best results, ensure the thermistor
is not exposed to direct sunlight and is exposed to good
airow.
CHILL – Wind Chill is a calculated value of the perceived
temperature based on temperature and wind speed.
HUMIDITY – Relative Humidity is the amount of moisture
currently held by the air as a percentage of the total possible
moisture that the air could hold.
HEAT INDEX – Heat Index is a calculated value of the
perceived temperature based on temperature and relative
humidity.
DEW POINT – Dew Point is the temperature at which water
vapor will begin to condense out of the air.
WET BULB – Wet Bulb is the lowest temperature
that can be reached in the existing environment by
cooling through evaporation. Wet Bulb is always
equal to or lower than ambient temperature.
BARO – Barometric Pressure is the local
atmospheric pressure (also called station or
absolute pressure) adjusted to mean pressure. An
accurate reading depends on a correct altitude
input and unchanging altitude while measuring.
ALTITUDE – Altitude is the vertical distance above
mean sea level associated with given atmospheric
pressure. An accurate reading depends on correct
initial barometric pressure input and stable
barometric pressure while measuring.
STATION – Station Pressure (Absolute Pressure)
is the pressure exerted by the atmosphere at the
location.
DENS ALT – Density Altitude is the altitude at
which the density of the theoretical standard
atmospheric conditions (ISA) would match the
actual local air density.
MOISTURE | HUM RATIO – Moisture Content
or Humidity Ratio is the ratio between the mass
of water vapor measured in the air to the mass
of dry air with no water vapor. (Not available in
Environmental models)
WEATHER GLOSSARY

19
DENSITY - Air density is the mass of the measured
air per unit volume. (Not available in Environmental
models)
RAD – Relative Air Density is the ratio of the measured
air density to the air density at sea level using the
International Civil Aviation Organization (ICAO)
standard reference conditions. (Not available in
Environmental models)
EVAP – Evaporation Rate (based on ACI 308) is a
guide to how quickly concrete will lose moisture in
the measured pour environment. (Not available in
Environmental or Racing models)
AIR FLOW – Volume Air Flow is a measure of the
volume of air passing through a duct of a shape
and size dened by the user. (Not available in
Environmental or Racing models)
DELTA T – Delta T is the dierence between the wet
bulb and the dry bulb temperature and is used to
determine acceptable agricultural spraying conditions.
(Not available in Environmental or Racing models)

20
Press only the sides of the impeller when removing and inserting
to avoid damaging the precision hub bearing. [ Figure 1] .
» Press FIRMLY on the impeller module to remove it.
» Insert the new impeller so the side that has the
small triangle (close to the perimeter) faces the
front of the Kestrel when installed.
Figure 1
IMPELLER REPLACEMENT
» Orient one“arm”of the module straight up .
[ Figure 2]. The impeller can be pushed in from
either side.
Figure 2