30440 Agoura Rd.
Agoura Hills, CA 91301 USA
Toll Free: (888) 262-3880
coolboss.com
Cool Boss™ Portable Evaporative Air Cooler
Installation and Operation Manual
Airflow Xtreme
Manual Revision A7 — September 2024 — Manual P/N 5900271
Models:
• CB-16L / H
• CB-28L / H
• CB-36L / H
⚠
DANGER
Read the entire contents of this manual before using this product. Failure to follow the
instructions and safety precautions in this manual can result in severe injury or death. Make sure all
other operators also read this manual. Keep the manual near the product for future reference. By
proceeding with setup and operation, you agree that you fully understand the contents of
this manual and assume full responsibility for product use.
CB-16L/H
CB-28L/H
CB-36L/H
Manual. Cool Boss™ Portable Evaporative Air Cooler, Installation and Operation Manual, P/N 5900271, Manual
Revision A7, September 2024.
Copyright. Copyright © 2024 by BendPak Inc. All rights reserved. No part of this manual may be reproduced,
adapted, translated, or transmitted by any means, electronic or mechanical, for any purpose or in any form,
without prior written permission of BendPak Inc.
Trademarks. Cool Boss, the Cool Boss logo, and BendPak are trademarks of BendPak Inc. All other company,
product, and service names are used for identification only. All trademarks and registered trademarks mentioned
in this manual are the property of their respective owners.
Limitations. Every effort has been made to ensure complete and accurate instructions are included in this
manual. However, product updates, revisions, and/or changes may have occurred since this manual was
published. BendPak reserves the right to change any information in this manual without incurring any obligation for
equipment previously or subsequently sold. BendPak is not responsible for typographical errors in this manual.
Warranty. The Cool Boss warranty is more than a commitment to you: it is also a commitment to the value of
your new product. Visit www.coolboss.com/warranty for complete warranty information.
Safety. Your new product was designed and manufactured with safety in mind. Your safety also depends on
proper training and thoughtful operation. Do not set up, operate, maintain, or repair your Cool Boss without
reading and understanding this manual and the labels on the unit.
Owner Responsibility. In order to maintain your product properly and to ensure operator safety, it is the
responsibility of the product owner to read and follow these instructions:
• Follow all setup, operation, and maintenance instructions.
• Make sure product setup conforms to all applicable local, state, and federal codes, rules, and regulations,
such as state and federal OSHA regulations and electrical codes.
• Read and follow all safety instructions. Keep them readily available for operators.
• Make sure all operators are properly trained, know how to safely operate the unit, and are properly supervised.
• Do not operate the product until you are certain that all parts are in place and operating correctly.
• Carefully inspect the product on a regular basis and perform all maintenance as required.
• Service and maintain the unit only with approved replacement parts.
• Keep all instructions permanently with the product and make sure all labels are clean and visible.
Unit Information. Enter the Model Number, Serial
Number, and Date of Manufacture from the label on
your unit. This information is required for part or
warranty issues.
Model:
Serial:
Date of Manufacture:
Cool Boss Evaporative Air Cooler 3 P/N 5900271 — September 2024 — Rev. A7
Table of Contents
Int
roduction 3 Operation 23
S
hipping Information 4 Maintenance 27
S
afety Considerations 4 Troubleshooting 30
Fr
equently Asked Questions 6 Parts Diagram 33
S
pecifications 7 Labels 36
C
omponents 9 Maintenance Log 39
S
etup 13
Introduction
This manual describes three models of the Cool Boss Portable Evaporative Air Cooler, which keeps
your shop or workplace cool and comfortable even on the hottest summer days. The Cool Boss
models described in this manual feature two amplified speakers paired with Bluetooth®, for streaming
audio from smart devices and a USB Port for charging portable devices. Additionally, the new Cool
Boss Airflow Extreme computer-optimized fan blade technology provides an increase in airflow over
previous models without compromising sound levels.
Three models are available with fan diameters of 16 in. (406 mm), 28 in. (711 mm), and 36 in. (914
mm). Each model may be ordered in a 110 VAC (L denotes 110V) or a 220 VAC (H denotes
220V) version:
• CB-16L: 110 VAC, 5A, 60Hz, 1 Ph. Power
• CB-16H: 208–230 VAC, 2.5A, 50/60Hz, 1 Ph. Power
• CB-28L: 110 VAC, 6.7A, 60Hz, 1 Ph. Power
• CB-28H: 208–230 VAC, 3.5A, 50/60Hz, 1 Ph. Power
• CB-36L: 110 VAC, 60Hz, 6.7A, 1 Ph. Power
• CB-36H: 208–230 VAC, 3.5A, 50/60Hz, 1 Ph. Power
All three Cool Boss units described in this manual operate identically and will be referred to as Cool
Boss or cooler throughout. Any differences based on the selected power supply or function, will be
called out in the text by the unit’s specific model number.
This manual is mandatory reading for all users of the Cool Boss Portable Evaporative Air Cooler,
including anyone who sets up, operates, maintains, or repairs it.
⚠ DANGER Use caution when setting up, operating, maintaining, or repairing this equipment. Failure
to do so correctly could result in property damage, product damage, injury, or (in very
rare cases) death. Only authorized personnel should operate this equipment. An
authorized technician must perform all repairs. Do not make modifications to the unit.
This voids the warranty and increases the chances of injury or property damage. Make
sure to read and follow the instructions on the labels on the unit.
Cool Boss Evaporative Air Cooler 4 P/N 5900271 — September 2024 — Rev. A7
Keep this manual on or near the equipment so that anyone who uses or services the unit can read it.
Assistance with your Cool Boss is available from your dealer, by calling Cool Boss at
(805) 933-9970, or by emailing support@coolboss.com. You may also contact Cool Boss for
parts replacement (please have the serial number and model number of your unit available).
Shipping Information
Your equipment was carefully checked before shipping. Nevertheless, you should thoroughly inspect
the shipment before you sign to acknowledge that you received it.
When you sign the bill of lading, it tells the carrier the items on the invoice were received in good
condition.
Do not sign the bill of lading until
after
you have inspected the shipment.
If any of the
items listed on the bill of lading are missing or are damaged, do not accept the shipment until the
carrier makes a notation on the bill of lading that lists the missing and/or damaged goods.
If you discover missing or damaged goods after you receive the shipment and have signed the bill of
lading, notify the carrier at once and request the carrier to make an inspection. If the carrier will not
make an inspection, prepare a signed statement to the effect that you have notified the carrier (on a
specific date), and that the carrier has failed to comply with your request.
It is difficult to collect for loss or damage after you have given the carrier a signed bill of lading. If this
happens to you, file a claim with the carrier promptly. Support your claim with copies of the bill of
lading, freight bill, invoice, and photographs, if available. Our willingness to assist in helping you
process your claim does not make us responsible for collection of claims or replacement of lost or
damaged materials.
Safety Considerations
Read this manual carefully before using your new product. Do not set up or operate
the product until you are familiar with all operating instructions and warnings. Do not allow anyone else
to operate the product until they are also familiar with all operating instructions and warnings.
⚠ WARNING California Proposition 65. This product can expose you to chemicals including
styrene and vinyl chloride which are on a list of over 900 chemicals identified by the
State of California to cause birth defects or reproductive harm. ALWAYS use this
product in accordance with Cool Boss or BendPak’s instructions. For more
information go to www.P65Warnings.ca.gov.
Safety Information
• The product is an air-cooling device. Use it only for its intended purpose.
• The product should only be operated by authorized personnel. Children should not be allowed to
operate the Cool Boss. Make sure all operators read and understand the warning labels and the
Installation and Operation Manual. Keep the manual near the device at all times.
• Never operate the Cool Boss with a damaged power cord or plug.
• When the product is in use, keep all body parts away from it.
• Only use the product indoors in a well-ventilated area. Ensure a window or door is open to allow
adequate air flow.
Cool Boss Evaporative Air Cooler 5 P/N 5900271 — September 2024 — Rev. A7
• Do not make any modifications to the product. This voids the warranty and increases the chances
of injury or property damage.
• Avoid using an extension cord as they can overheat. If you must use an extension cord, make sure
it is a three conductor No. 14 AWG minimum with a three-prong plug/receptacle and does not
exceed 50 ft. (15.2 m) in length. For 100 ft. (30.4 m) extensions cords use 12 AWG minimum.
• Do not spray the outside of the unit with water. Moisture can harm the motor and other parts of the
electrical system.
• Only connect the power cord to a grounded, three-prong GFCI protected receptacle.
• Lock at least two casters before turning on the fan.
• Make a visual inspection of the product before using it. Check for damaged or missing parts. Do
not use the product if you find problems with the unit. Instead, remove it from service
and then contact your dealer, call Cool Boss at (805) 933-9970, or email Cool Boss at
support@coolboss.com.
• Do not operate the Cool Boss if the fan has cracked or damaged blades.
• Do not operate the Cool Boss unless the Honeycool™ Evaporative Media is securely in place.
• Do not operate the Cool Boss within 35 ft. (10.6 m) of an open flame or spark.
• Do not operate the Cool Boss if the GFCI does not remove power when the test button is
pressed.
• Always remove the plug from the electrical receptacle by pulling on the plug, not the power cord.
• Cool Boss recommends making a thorough inspection of the product at least once a year.
Replace any damaged or severely worn parts, decals, or warning labels.
Save these instructions!
Symbols
⚠ DANGER Calls attention to an immediate hazard that will result in death or severe injury.
⚠ WARNING Calls attention to a hazard or unsafe practice that could result in death or severe
personal injury.
⚠ CAUTION Calls attention to a hazard or unsafe practice that could result in minor personal
injury, product, or property damage.
Tip Calls attention to information that can help you use your product better.
Liability Information
Cool Boss, BendPak Inc. assumes no liability for damages resulting from:
• Use of the equipment for purposes other than those described in this manual.
• Modifications to the equipment without prior, written permission from Cool Boss, BendPak Inc.
• Injury or death caused by modifying, disabling, overriding, or removing safety features.
• Damage to the equipment from external influences.
• Incorrect operation of the equipment.
Cool Boss Evaporative Air Cooler 6 P/N 5900271 — September 2024 — Rev. A7
Frequently Asked Questions
Question: Is the Cool Boss an air conditioner?
Answer: No. it is an evaporative air cooler, sometimes called a swamp cooler. The fan pulls in hot
outdoor air. A water drip spray system then releases water into the Honeycool™ Evaporative Media.
The water droplets evaporate when they meet the hot air, lowering the air temperature by up to 26°F.
The fan then blows the cooled air in the desired direction.
Q: How much air does the Cool Boss cool?
A: Each unit can cool approximately:
Model
Airflow
Cooling Area
CB-16L / H
5,845 cfm (166 cmm)
1,330 ft
2
(124 m
2
)
CB-28L / H
10,645 cfm (301 cmm)
2,510 ft
2
(233 m
2
)
CB-36L / H
14,890 cfm (422 cmm)
3,690 ft
2
(343 m
2
)
Q: What is the best way to set up my Cool Boss?
A: With the back of the unit facing a source of hot, dry air and the front facing the area you want to
keep cool. It will require a nearby power source. But, it is portable, so you can move the unit to where
you need it.
Q: Does it require special water?
A: No, just clean, ordinary tap water.
Q: Is it hard to control the Cool Boss?
A: Not at all. There are a few, easy-to-understand controls on the unit. It also comes with a remote
control, so that you can turn it on or off or change settings from wherever you happen to be.
Q: What about maintenance?
A: Very little maintenance is required. Simply keep the Water Reservoir filled with clean tap water and
clean the Evaporative Media occasionally. Dirt and other pollutants from the environment can
accumulate in the Media and the Reservoir, so it is best to clean them regularly. Do
not
clean the
Honeycool Evaporative Media by spraying it with high pressure water while it is installed in the Cool
Boss. Instead, remove the Media using the procedure in the
Maintenance Section and clean it in
accordance with the procedure found there.
Q: Anything else I should know about my Cool Boss?
A: A ducting kit is available for the CB-16L/H only. This kit attaches to the Fan outlet, allowing you to
direct and concentrate the cooling to exactly where you need it.
Q: Can I charge my phone on the USB port?
A: Yes, the Cool Boss includes a charge-only USB port providing 5V at 0.5 Amps. It does not transmit
data.
Q: Can I stream music from my phone to the Cool Boss speakers?
A: Yes, the Cool Boss will pair with smart devices via Bluetooth® if your device is compatible with
Bluetooth v5.0 and within ≈30 ft. (9 m) of the unit. Be aware that Bluetooth range may be reduced by
obstacles (e.g., walls, people, and machines.) Electromagnetic interference from equipment or other
Bluetooth devices will also negatively impact the actual Bluetooth range.
Cool Boss Evaporative Air Cooler 7 P/N 5900271 — September 2024 — Rev. A7
Specifications
Cool Boss Evaporative Air Cooler 8 P/N 5900271 — September 2024 — Rev. A7
Model CB-16L / H CB-28L / H CB-36L / H
Dimensions
(A x B x C)
41 in. x 34 in. x 66 in.
(1,041 x 864 x 1,676 mm)
53 in. x 37 in. x 76 in.
(1,346 x 940 x 1,930 mm)
65 in. x 44 in. x 85 in.
(
1,651 x 1,118 x 2,159 mm)
Fan diameter 16 in. (406 mm) 28 in. (711 mm) 36 in. (914 mm)
Weight Empty 200 lbs. (91 kg) 275 lbs. (125 kg) 398 lbs. (181 kg)
Weight Full 698 lbs. (317 kg) 939 lbs. (426 kg) 1,355 lbs. (615 kg)
Water capacity 60 gal. (228 liters) 80 gal. (303 liters) 115 gal. (436 liters)
Maximum airflow 4,960 ft
3
/min.
(140.5 m
3
/min.)
8,120 ft
3
/min.
(230 m
3
/min.)
10,440 ft
3
/min.
(295.6 m
3
/min.)
Sound level 60 to 74 dB
58 to 72 dB
62 to 75 dB
UL
®
Certified Yes Yes Yes
Fan RPM Min./ Max.
520 / 1,550 970 / 1,450 970 / 1,450
Maximum Power
Amperage
5A 6.77A 6.77A
Motor Power
HP / Watts
.75 HP / 559W 1HP / 745W 1HP / 745W
Power Source
L Models: 110 VAC, 60 Hz., Use a 15A, single phase circuit.
H Models: 208 to 230 VAC, 50-60 Hz., Use a 15A, single phase circuit.
Power Cord 15 feet (4.5 m) with GFCI
Inlet Water Press. ≈28 to 99.5 psi (2 to 7 kg/cm
2)
Max. Automatic Water Source Shutoff.
Water Source
Shutoff
The Cool Boss utilizes a Mechanical Float Valve to automatically shut off the Water
Source before exceeding maximum Fill.
Fan speed Variable in 10 speed increments
Fan type Axial
Controls
Manual pushbutton membrane panel with digital LED display or remote control.
LED Floodlight
80W, 4000 lumens
Housing
Rotomold Polyethylene
Bluetooth
®
Compatible with Bluetooth® v5.0
USB
USB port is available for charging devices only. USB 2.0 specification .5 A at 5 V
Cool Boss Evaporative Air Cooler 9 P/N 5900271 — September 2024 — Rev. A7
Components
The Cool Boss Unit
CB-16 pictured below.
Cool Boss Evaporative Air Cooler 10 P/N 5900271 — September 2024 — Rev. A7
This figure below details the interior of the unit, from the back (intake side).
Cool Boss Evaporative Air Cooler 11 P/N 5900271 — September 2024 — Rev. A7
The Cool Boss Control Panel
The figure below details the Control Panel.
Status Display
The Control Panel’s Status Display provides the on-off status of the Cool Boss functions, the fan
power settings as a percentage, current temperature of the air in ˚F at the Cool Boss Fan, the timer
status, and a low water warning.
Control Functions
Power – Push on-off. Applies power to the Cool Boss.
Fan – Push on-off. Applies power to the fan.
Cooling – Push on-off. Applies power to the pump which provides water to the Spray Bar over the
Media.
Timer – Push to scroll through preprogramed shutdown times. Allows the operator to select an
automatic shutdown time in 1 hour increments. Up to 12 hours maximum.
Up – Push to increase the fan speed.
Down – Push to decrease the fan speed.
LED – Push on-off. Applies power to the LED Floodlight located the top of the Cool Boss.
Cool Boss Evaporative Air Cooler 12 P/N 5900271 — September 2024 — Rev. A7
Audio System Display
Indicates audio input, active commands, and current audio file time.
Audio System Controls
Audio Power – Push on-off. Applies power to the Cool Boss audio.
Play Pause – Push to begin playback or pause current audio file.
Prev. and Volume Down– Quickly push-skips back to the previous audio file. Push and hold to
reduce speaker volume.
Next and Volume UP– Quickly push-skips forward to the next audio file. Push and hold to
increase speaker volume.
Mode – N/A.
Vol- Push to lower the speaker volume.
Vol+ Push to raise the speaker volume.
⚠ CAUTION Do Not push buttons on Control Panel or Remote Control with any Sharp Object.
Damage from sharp objects is NOT COVERED under the warranty.
Remote Control
The figure below details the remote-control
functions as defined above. The remote will
be found in the box with the casters. The
remote control requires two (2) AAA 1.5 volt
batteries. (Batteries are not included with the
Cool Boss.)
Important
: The remote utilizes infra-
red light to communicate
with the Cool Boss. The
remote must be within 32
ft. (9.7 m) and have a
direct line-of-sight to the
Control Panel.
Cool Boss Evaporative Air Cooler 13 P/N 5900271 — September 2024 — Rev. A7
Setup
There are six basic steps in the Cool Boss set up.
1. Unbox.
2. Install the Casters.
3. Install the Honeycool™ Evaporative Media.
4. Determine the Cool Boss location.
5. Fill the reservoir or connect to water.
6. Connect to power.
IMPORTANT! If setting up a 220VAC version of the Cool Boss, an electrician must
install an appropriate plug conforming to national (NEC), state, and
local electrical codes.
Tools required for assembly:
• Hammer
• Pry bar
• Phillips screwdrivers
• Metric open end wrench set
• Two (2) AAA 1.5 V batteries
Unbox the Cool Boss
The Cool Boss Cooler is carefully packaged to prevent damage. Exercise care in removing the cooler
from its packaging.
⚠ WARNING Be careful not to injure yourself on sharp edges or fasteners.
⚠ WARNING You must always wear the proper protective equipment during setup and assembly
of this Cooler: leather gloves, steel-toed boots, and back belts.
To unbox the cooler:
Use a hammer and pry bar to carefully remove the shipping container from around the Cool
Boss.
Carefully position the cooler with the back side down to provide access to the bottom of the unit.
The back of the shipping container may be used to provide a clear, clean area to work on the
cooler. See figure below.
Cool Boss Evaporative Air Cooler 14 P/N 5900271 — September 2024 — Rev. A7
Install the Casters
The Cool Boss is shipped with heavy-duty locking casters to both support and allow easy movement
of the cooler around your facility. The Casters are shipped in a separate box with the Remote Control.
Locate and install the four swivel casters using the four bolts and flat washers for each caster, as
detailed in the figure below.
Lock the two rear casters by pushing down on the larger pedal. Pushing down on the small pedal
releases the lock.
Have an assistant help raise the Cool Boss upright and onto its casters.
Cool Boss Evaporative Air Cooler 15 P/N 5900271 — September 2024 — Rev. A7
Install the Honeycool™ Evaporative Media
Proper installation of the Honeycool Evaporative Media is critical to the operation of your Cool Boss.
The Spray Bar saturates the Evaporative Media with water pumped from the reservoir as the Fan pulls
warm air through the Media. The Honeycool Media incorporates a Moisture Lock on the hot air side
made of a nonabsorbent resin which reduces evaporation and increases the Evaporative Media’s
cooling efficiency. The nonabsorbent resin side must always be installed toward the warm air side
and the Distribution Layer must be orientated up to face the Spray Bar. The internal channels
within the media will direct the water flow through and inward towards the fan. Any
excess water will be directed back into the reservoir. Refer to the figure below.
Hot Air Intake
Cool Air Exhaust
Distribuon Layer
Resin Side
Nonabsorbent
Fan
Spray Bar
Honeycool Evaporave Media and Spray Bar
Cross Secon View
Cool Boss Evaporative Air Cooler 16 P/N 5900271 — September 2024 — Rev. A7
Spray
Bar
Media
Holder
Splash
Guard
Media - Resin Side
Faces Warm Air
To install the Media:
Retrieve the Honeycool Evaporative Media quantity for your specific Cool Boss model. Each Cool
Boss model uses a different number of Media sections. Refer to the table below. Handle the
Media carefully to avoid damage.
Components removed for clarity.
Remove and retain the screws securing the Media Holder Splash Guard. Refer to the figure below.
Components removed for clarity.
Model Qty. Part Number
CB-16 3 5326296
CB-28 4 5326298
CB-36 5 5326298
Media
Media Holder
Splash Guard
Distribuon Layer
Cool Boss Evaporative Air Cooler 17 P/N 5900271 — September 2024 — Rev. A7
Insert one Media section into the Cool Boss. Verify the Moisture Lock Resin surface of the Media is
oriented to the warm air side and the Distribution Layer is on top facing the Spray Bar. Channels in
the Media are oriented to direct the water flow downward and toward the Fan of the Cool Boss.
Slide the first Media as far to the left as possible. Refer to the figure below.
Some components removed for clarity.
Orient the Media as in the previous step. Install this section of Media and slide the new section as
far to the right as possible.
Some components removed for clarity.
Cool Boss Evaporative Air Cooler 18 P/N 5900271 — September 2024 — Rev. A7
Retrieve the final Media section and orient it as in the previous step. Install this last section in the
open middle space.
Some components removed for clarity.
Install the Media Splash Guard using the screws removed in step 2.
Components removed for clarity.
Cool Boss Evaporative Air Cooler 19 P/N 5900271 — September 2024 — Rev. A7
Find a location for your Cool Boss
Find a suitable location for the Cool Boss (hot air to the rear, cooling area to the front). The Cool Boss
should be indoors, near an appropriate power and water source, and in a low-traffic and well-
ventilated area.
⚠ WARNING This equipment has internal arcing or sparking parts that should not be exposed to
flammable vapors. The unit must not be located in a recessed area or below floor level.
⚠ WARNING Verify that the floor will support the weight of the Cool Boss with a full reservoir, is
well constructed and stable enough to prevent the cooler from tipping over
.
To choose a location for the Cool Boss Cooler:
Unlock the casters to allow the Cool Boss to roll. Direct the fan outlet toward the area to be
cooled.
⚠ CAUTION To ensure efficient operation, the Cool Boss requires adequate airflow for intake
and exhaust. Verify a window or door is open.
Keep 36 in. (914 mm) minimum distance behind the Cool Boss for air intake.
⚠ WARNING Verify the Power Cord and Water Supply Hose are routed to prevent a tripping
hazard and are not routed under carpets or across sharp edges.
Once you have determined and moved the Cool Boss into position, lock a minimum of two
casters by pressing down with your foot on the large pedal locking mechanism on each caster.
To unlock the casters, press down on the small pedal.
⚠ CAUTION Do not start the Cool Boss until you have locked a minimum of two casters. This
ensures that unintended movement caused by the thrust of the fan will not occur.
Cool Boss Evaporative Air Cooler 20 P/N 5900271 — September 2024 — Rev. A7
Fill the Water Reservoir
There are two options to fill the Reservoir, using a hose connected
to the 3/4 in. Water Inlet Connector with Float Valve, or manually
filling the Reservoir through the Reservoir Fill Inlet.
To fill the Reservoir:
You may connect to the Water Inlet Connector on the left side of
the unit using the standard 3/4 in. hose fitting and a hose that is
rated to 28 to 99.5psi / (2 to 7 kg/cm
2
) maximum water pressure
at your location. See figure to the right. Open the facility water
supply valve and verify that there are no leaks at the Cool Boss
connection point. A hose is not supplied with the Cool Boss.
If you are utilizing the 3/4 in. Water Inlet Hose Fitting, the
Reservoir Float Valve will close to stop water before the
maximum fill level is exceeded.
⚠ CAUTION Do not connect to a water source with a
supply pressure in excess of ≈28 to 99.5psi / (2 to 7 kg/cm
2
).
Alternatively, you may manually fill the Reservoir using the Water Reservoir Inlet found below the
Reservoir Fill Level Gauge. Remove the threaded plug and fill.
Add clean water. Fill to the Max. fill level only. Do
not
overfill. Monitor the Reservoir level using the
Fill Gauge located on the front of the Cool Boss. See the figure below. Water temperature must be
less than 113°F (45°C).
After filling, replace the threaded plug, remove and dry any spilled water on the Cool Boss or floor
around the unit.
⚠ CAUTION Use only cold, clean water to fill the
Cool Boss. No detergents or additives
of any kind.
Model Water Capacity
CB-16L / H ≈60 gal. / 230 liters
CB-28L / H ≈80 gal. / 300 liters
CB-36L / H ≈115 gal. / 440 liters
Cool Boss Evaporative Air Cooler 21 P/N 5900271 — September 2024 — Rev. A7
Connecting the Cool Boss to Power
Cool Boss Fans with an “L” suffix in the part number (e.g., CB-16L) are preconfigured for
110 VAC operation with the appropriate plug attached.
Cool Boss Fans with an “H” suffix in the part number (e.g., CB-16H) are setup for 220
VAC operation. Units operating at 220 VAC require an electrician to install an appropriate
220 VAC plug.
⚠ DANGER All electrical work must be accomplished by a licensed
electrician, in accordance with national, state, and local electrical
codes. If you do not use a licensed electrician, you void your warranty
and put everyone who uses the cooler in danger of injury or, in rare
cases, death.
The Cool Boss is supplied with a power cord that incorporates a Ground Fault Circuit Interrupter
(GFCI). The electrician will supply and install an appropriate electrical plug in accordance with electrical
codes for your locality. The 220VAC Cool Boss Fans require 220 to 240 VAC on a properly
grounded and dedicated 15 Amp circuit protected by an appropriate fuse or circuit breaker. Cool boss
does not recommend connecting to an outlet controlled by a switch, unless it is rated for the full power
load presented by the Cool Boss.
To connect the Cool Boss to a 220 VAC power source:
Verify the Cool Boss is disconnected from the power source.
⚠ DANGER Do not install a 220 VAC plug until you are sure that power has been
disconnected from the unit. Disconnect power before performing any
troubleshooting or maintenance. Lockout and Tagout power to make sure the
unit cannot be re-energized until maintenance or installation is complete.
Verify the Cooler is configured for 220 VAC operation. Locate the Model/Serial Number plate near
the Cooler Display. The operating voltage is indicated on this data plate and should indicate 220 –
240 VAC operation.
Have a licensed Electrician attach a 250 VAC NEMA 30A, 2-Pole, 3-Wire plug. This plug is not
shipped with the Cool Boss. The electrician must supply the correct plug for the locality.
The electrician will connect the plug based on the color codes as indicated in the figure below.
Plug the Cool Boss power cord into a 220 VAC outlet protected by an appropriate circuit breaker.
Test the unit to verify the Cooler is working normally.
⚠ WARNING Connect the Cool Boss to a properly grounded electrical receptacle protected by an
appropriate fuse or circuit breaker.
⚠ WARNING Never remove the Ground Prong from the plug end of the Power Cord.
L1
L2
GND.
Cool Boss Evaporative Air Cooler 22 P/N 5900271 — September 2024 — Rev. A7
Test the unit to verify the Cooler is working normally.
Additional electrical information:
Ground Fault Circuit Interrupter (GFCI)
The Cool Boss incorporates a Ground Fault Circuit Interrupter. The GFCI acts as a Circuit Breaker
in the event of a Ground Fault. A Ground Fault occurs when Voltage comes into direct contact with
the equipment’s frame or Ground. To test the GFCI refer to the Maintenance Section
.
⚠ WARNING The Cool Boss must connected to a properly grounded electrical outlet for the
GFCI to function. If the Outlet is not correctly grounded or if the Power Cord is
damaged, preventing the Ground connection, the GFCI cannot protect you
from electrical shock.
Extension Cords
If an extension cord is required, use only cords with a polarized plug/receptacle no longer than 100
feet in length. Never use an extension cord that is not properly rated to handle the electrical load.
When making connections, ensure all local and national electrical codes are adhered to.
Minimum requirements for Extension Cords
25-50 ft. (7.6 – 15.2 m) in
length
Minimum 14 AWG
Total to 100 ft. (30.4 m) in
length
Minimum 12 AWG
⚠ WARNING For generator users and/or for areas with frequent brownout
conditions. Motor failure due to excessive high or low voltage is not covered
under warranty. If you plan to use the Cool Boss with a generator or operate in
an area with frequent brownouts, verify that the power source can provide the
required current and voltage. While voltage variations are common (±5%) both
high and low voltage episodes in excess of 15% to 20% can cause electric
motor overheating and premature motor failure.
Low voltage will cause the motor to draw more electrical current to deliver the
same amount of force to the fan blades. Excessive current overheats the Motor
Windings, eventually burning through the insulation and resulting in complete
Motor failure.
High voltage episodes can cause premature failure of electrical and electronic
components due to overheating.
Cool Boss Evaporative Air Cooler 23 P/N 5900271 — September 2024 — Rev. A7
Operation
IMPORTANT NOTICE! Fill the water reservoir to maximum capacity before first use.
Failure to do so will prevent the low-water shutoff from engaging and the fan from
starting.
⚠ WARNING The Cool Boss should only be operated by authorized, trained personnel. This
includes reviewing and understanding the Operation Manual and safety labels on
the Cool Boss. Do not allow children or impaired persons to operate the Cool
Boss.
⚠ WARNING Never roll anything heavy or sharp over the power cord. Find a location
where people will not be walking over the power cord, presenting a tripping hazard.
⚠ WARNING Never operate the Cool Boss unless the Ground Fault Circuit Interrupter (GFCI) is
functioning.
⚠ WARNING Never remove the Ground Prong from the plug end of the Power Cord.
⚠ WARNING Do not run the Power Cord under a rug or other flammable materials.
⚠ WARNING Use only in a well-ventilated open environment with a fresh air supply.
⚠ WARNING Do not use the Cool Boss near airborne pollutants, flammable gases and
contaminates.
⚠ WARNING Ambient operating temperature must remain between 65 to 113˚F (18 to 45˚C).
⚠ WARNING Never spray unit with water as moisture may harm the motor or other electrical
system components.
⚠ WARNING Do not operate near open containers of flammable liquids or gases.
⚠ WARNING Always maintain a minimum of 50 ft. (15.2 m) from open flame or sparks.
⚠ WARNING The Cool Boss is not designed to be used by children or persons with reduced
physical, sensory, or mental capabilities or lack of experience and knowledge
unless they have been given supervision or instruction concerning use by a person
responsible for their safety.
⚠ WARNING Hearing protection is required when the Fan is operating at maximum speed and
personnel are closer than 10 ft. (3 m) for prolonged periods.
⚠ WARNING Never operate the Cool Boss unless all the Evaporative Media sections are
securely in place.
⚠ WARNING Always dry the Evaporative Media after use by turning off the Cooling Pump and
running the Fan without circulating water. This may take from 20 to 60 minutes
depending on temperature and humidity.
Cool Boss Evaporative Air Cooler 24 P/N 5900271 — September 2024 — Rev. A7
To operate the Cool Boss for cooling:
Before starting the Cool Boss, verify that the Media Holder Splash Guard is secured in place. This
will reduce the chances of water splashing out of the Cool Boss and creating a slipping hazard.
If using the Cool Boss indoors, open a door or window. Sufficient airflow for intake and exhaust is
critical.
Verify that the Cool Boss is connected to a water source through the 3/4 in. Hose Inlet or that the
Water Reservoir is full.
⚠ CAUTION The Cool Boss Pump will be damaged if allowed to
operate without water. A float switch incorporated into the
pump prevents activation when the reservoir is empty or close to
empty. This switch must be reset by filling the
reservoir to maximum capacity before use. See the
Float Switch Reset Procedure in Troubleshooting.
Close the Flow Control Valve (turn the Valve clockwise until it stops). See figure to
the right.
Verify at least two of the locking casters are locked to prevent the Cool Boss
from moving.
Plug-in the Cool Boss to an appropriate power receptacle.
Press Power on the Cool Boss Fan Controls. Refer to the Status Display on the
Control Panel to determine current settings and air temperature at the Fan.
Press the Fan button to supply power to the Fan. The Fan indicator will illuminate on the Status
Display. Press Up
or Down to adjust the power setting to 25% or less.
Verify the Low Water Indicator displays Green on the Status Display. If the Low Water indictor
displays Red , verify the water source is connected and providing water under pressure. If filling
manually, turn off the Cool Boss, unplug it from power and fill the Reservoir to its maximum level.
The Pumps’ internal low-water switch will keep the Pump in the off condition until the pump’s float
switch is reset. See the
Float Switch Reset Procedure in Troubleshooting.
If the Low Water Indicator is Green , Press the Cooling button once to turn on the Pump. The
Cooling indicator will light on the Status Display. See Reset under troubleshooting if the pump will
not supply water to the media.
Slowly open the Flow Control Valve. Leave the Flow Control Valve on low until the top ≈30% of
the Evaporative Media becomes saturated (≈30 seconds). Once the top 30% of the Media is
saturated the Flow Valve may be slowly opened to increase the flow of water.
⚠ CAUTION Fully opening the Flow Control Valve onto dry Media will flood the Media faster than
it can absorb the water. Water will then be forced out of the Media onto the floor
and surrounding area. Carefully adjust the Flow Control to evenly saturate the
Media before increasing the flow of water onto the Media and before applying more
power to the Fan.
⚠ WARNING Rotating Fan Blades! Keep hands, fingers, and loose clothing away from the Fan
when it is in operation.
Press Up or Down to adjust the Fan speed on the Control Panel or the Remote Control.
Cool Boss Evaporative Air Cooler 25 P/N 5900271 — September 2024 — Rev. A7
Increase the flow of water to increase cooling as the Evaporative Media becomes saturated.
Increasing the water flow increases the humidity of the air exiting the Cool Boss. Reducing the
water flow will decrease the humidity exiting the Cool Boss.
To shut down the Cool Boss:
1. Close the Flow Control Valve and turn off the Pump by pressing the Cooling button once.
2. If using the 3/4 in. Water Source Inlet, close the valve supplying the water to the Cool Boss.
3. Run the Fan to dry the Evaporative Media.
4. When the Media is dry press the Cool Boss power button to shut down the Cool Boss.
⚠ WARNING Always dry the Evaporative Media after use by turning off the Cooling and running
the Fan without circulating water. This may take from 20 to 60 minutes depending
on temperature and humidity.
To shut down the Cool Boss using the Timer:
Close the Flow Control Valve and turn off the Pump by pressing the Cooling Button once.
If using the 3/4 in. Water Source inlet, close the Valve supplying the water to the Cool Boss.
Press the Timer button until the desired number of hours before shut-down are displayed.
The Cooler will shut down based on the time entered.
Audio System Operation
The Cool Boss includes a Bluetooth v5.0 receiver that will stream audio files from your mobile device.
To use the Cool Boss Audio System with
Bluetooth®:
Verify power is supplied to the Cool Boss.
Turn the Cool Boss Volume Control to a low level.
Press the Power button in the Cool Boss Audio section.
Press the Mode button until the BT is illuminated on the Audio
Display section of the Cool Boss.
A chime will sound from the Cool Boss and bL:UE will appear
on the audio display. Refer to the figure to the right.
Go to the Bluetooth settings on your mobile device and select
XF-a from the list of available Bluetooth devices to pair.
A chime will sound if your mobile device was successfully paired.
Select and play the desired media on your mobile device.
Adjust the volume to your desired level.
To shut down the Audio System simply press the Power button once.
To charge your phone using the USB port:
The Cool Boss includes a USB port that will charge portable electronic devices conforming to the USB
2.0 specification, delivering up to 0.5 Amps at 5 Volts. The USB port will provide power any time the
Cool Boss is powered on. The USB port will not play audio files through the Cool Boss.
Cool Boss Evaporative Air Cooler 26 P/N 5900271 — September 2024 — Rev. A7
⚠ CAUTION Contaminated, wet or damaged USB connectors may cause damage to the Cool
Boss Control Panel. Always verify that the USB connector you are using is clean
and dry before plugging into the Cool Boss or your portable device.
1. Connect the Cool Boss to power.
2. Connect your phone to the USB connector on the Cool Boss Control Panel using an appropriate
USB cable. A USB Cable is not provided with the Cool Boss.
3. Press the Cool Boss Power button, not the Audio Section power button.
4. Power should now be provided to the USB device.
Cool Boss Accessories - Ducting Kit
A Ø20 in. (Ø 508 mm) x 15 ft. (4.5 m) reinforced polyvinyl flexible Ducting Kit may be purchased as an
accessory for the for the CB-16L and H models only. (SKU 5150236) The Ducting Kit allows cool
air to be directed precisely where you need it. For more information and the latest Quick Start Guide
for the Ducting kit go to the Cool Boss website. Coolboss.com
Cool Boss Evaporative Air Cooler 27 P/N 5900271 — September 2024 — Rev. A7
Maintenance
⚠ DANGER Disconnect the unit from its power source before performing any maintenance
activities! Make sure the unit is locked out from power and cannot be energized
while maintenance is being performed. If your organization has Lockout/Tag out
policies, make sure to implement them before servicing the Cool Boss.
⚠ WARNING Rotating fan blades can cause severe injury! Keep hands and loose clothing clear!
⚠ WARNING Disconnect the Power Cord when cleaning the Cool Boss and exercise care to
avoid splashing water on the motor or internal electronics.
To maintain the Cool Boss:
• Daily. Turn off the Cooling Pump and run the Fan to dry the Honeycool™ Evaporative Media and
inhibit the growth of bacteria, mold, and mildew. Typically, Media drying can take 20 to 60 minutes
depending on the current temperature and humidity.
• Weekly. Change the Cool Boss Reservoir water when it gets dirty. Dirt and other pollutants from the
environment will migrate into the water and reservoir. Cool Boss recommends draining and
cleaning the Reservoir weekly or more often depending on the frequency of use and the
cleanliness of the environment.
⚠ CAUTION Exercise care when removing the
Drain Plug on the bottom of the
Reservoir. There is a sealing O-Ring
on this plug that may stick to the
housing or fall and become lost. See
figure to the right.
• Monthly
. Test the GFCI on the Cool Boss Power Cord once a month to ensure it is working
properly and protecting from electric shock.
• Monthly. Clean the outside of the unit. Do
not
use harsh chemicals. Unplug the Cool Boss and
wipe down the outside of the unit with a damp cloth. The frequency of use and the cleanliness of
the environment will affect the frequency of cleaning required.
⚠ WARNING Do
not
spray the Cool Boss with water. The electronics are not sealed. Water can
damage the motor and/or other parts of the electrical system.
• Monthly. Empty the Reservoir and clean it.
• Monthly. Remove the Media and clean as detailed below. Dirt and other pollutants from the
environment can become caught in the Media. Regular cleaning will keep the air fresh and clean.
⚠ WARNING Do not operate your Cooler if you find maintenance issues. Instead, remove it from
service. Assistance with your Evaporative Cooler is available from your dealer, by calling
Cool Boss at (805) 933-9970, or by emailing support@coolboss.com. You may
also contact Cool Boss for parts replacement (please have the serial number and model
number of your unit available).
Cool Boss Evaporative Air Cooler 28 P/N 5900271 — September 2024 — Rev. A7
To clean the Reservoir:
The Media must be dry before removing. If the Media is wet, run the Fan without running the
Cooling Pump until dry.
Turn off and then unplug the Cool Boss.
⚠ WARNING Disconnect the unit from its power source before performing any maintenance!
Make sure the unit is locked out from power and cannot be energized while
maintenance is being performed. If your organization has Lockout/Tag out policies,
make sure to implement them before servicing the Cool Boss.
Tip
Cool Boss recommends wearing gloves when handling the Media.
Remove and retain the three Splash Guard Fasteners securing the Media Holder Splash Guard and
then remove the Splash Guard.
Remove the center Media first by pulling the top of the Media away from the Cool Boss. You may
need to apply a little pressure to get the Media out. Be careful not to damage the Media.
Remove the remaining Media panels in the same manner.
Remove the plug at the bottom of the Reservoir and drain into a container or appropriate drain.
⚠ CAUTION Take care to retain the O-Ring that provides a seal between the Plug and the
Reservoir.
Remove any residual water with rags or a wet/dry vacuum.
Wipe with clean rags and remove any mineral deposits. Do
not
use any harsh chemicals.
Refill the Reservoir and replace the Media. The Cool boss is now ready to use.
To clean the Media:
The Media must be dry before removing. If the Pad is wet, run the Fan without running the Cooling
Pump until the Pad is dry.
Turn off and then unplug the Cool Boss.
⚠ WARNING Disconnect the unit from its power source before performing any maintenance!
Make sure the unit is locked out from power and cannot be energized while
maintenance is being performed. If your organization has Lockout/Tagout policies,
make sure to implement them before servicing the Cool Boss.
Remove and retain the three Splash Guard Fasteners securing the Media Holder Splash Guard and
then remove the Splash Guard.
Remove the center Media first by pulling the top of the Media away from the Cool Boss. You may
need to apply a little pressure to get the Media out. Be careful not to damage the Media.
Remove the remaining Media in the same manner.
Rinse the Media under running water to clean and use a soft brush or rag to gently remove
accumulated dirt. Do not use highly pressurized water or air to clean the Media.
Dry the Media before attempting to reinstall it in the Cool Boss.
Return the Media to the Cool Boss in the same orientation (Distribution Layer at the top and
Moisture Lock facing the warm air). Install the bottom first and then the top. You may need to apply
gentle pressure to push the top of the pad into place.
Cool Boss Evaporative Air Cooler 29 P/N 5900271 — September 2024 — Rev. A7
Ground Fault Circuit Interrupter (GFCI)
The Cool Boss incorporates a Ground Fault Circuit Interrupter. The GFCI acts as a Circuit Breaker
in the event of a ground fault. A ground fault occurs when voltage comes into direct contact with
the equipment’s frame or ground. To test the GFCI refer to the Maintenance Section
.
⚠ WARNING The Cool Boss must connected to a properly grounded electrical outlet for the
GFCI to function. If the Outlet is not correctly grounded or if the Power Cord is
damaged, preventing the Ground connection, the GFCI cannot protect you
from electrical shock.
Cool Boss Evaporative Air Cooler 30 P/N 5900271 — September 2024 — Rev. A7
Troubleshooting
⚠ WARNING This Evaporative Cooler uses electrical energy. If your organization has
Lockout/Tagout policies, make sure to implement them before performing any
Troubleshooting.
Issue Probable Cause Action to Take
Control Panel
inoperative.
•
No power.
• Circuit Breaker open.
• Panel component failure.
•
Check the power supply.
•
Reset the circuit breaker.
•
Replace the panel.
Unit not working.
No power.
•
Power cycle the unit on-off.
•
Verify the power supply is
functional.
Fan not working or
moving slowly.
• Fan is stuck.
• Fan is broken.
• Brown-out or low voltage.
•
Check for blockage and remove.
•
Repair fan.
•
Correct voltage supply issue.
Motor not working.
•
Control Panel is not
working.
• Motor failure
•
Replace Control Panel.
•
Replace motor.
Drain leaks.
• Drain Plug is not tight
• Drain Plug is cross-
threaded.
• O-Ring is missing
•
Tighten Drain Plug.
•
Replace the Plug if the thread is
damaged.
•
Replace the O-Ring.
Fan dripping water.
•
Water tubing is
disconnected or leaking.
•
Check internal water connections
and tubing.
Remote does not work.
• Battery is inoperative.
• Something is obstructing
receiver or remote.
• Remote is out of range of
the receiver.
•
Replace both batteries (AAA 1.5
V).
•
Clear the obstruction.
•
The remote must be within 32-ft.
(10 m) and have a direct line-of-
sight to the Cool Boss Control
Panel.
The USB port will not
charge my phone.
•
Damaged cable or
connector(s).
• Replace the cable.
• Check for debris in the connector
• Check for bent or broken pins on
the connector(s).
The Cool Boss Audio
System is not playing
audio through the Aux.
Audio Jack.
•
Damaged cable or
connector(s).
•
Replace the cable.
Cool Boss Evaporative Air Cooler 31 P/N 5900271 — September 2024 — Rev. A7
Issue Probable Cause Action to Take
My Bluetooth device is
not connecting.
• Cool Boss Audio System
not on or not set to
Bluetooth operation.
• Smart device not paired
with the Cool Boss.
• Smart device is out of
range.
• Wireless signal interference.
• Insufficient frequency
available due to the number
of active wireless devices in
the immediate area.
• Interference from 4 GHz
cordless phone.
• Make sure the Cool Boss Audio
System is set to BT mode. BT
should be illuminated on the Cool
Boss audio panel.
• Verify your smart device is paired
with the Cool Boss Audio System
and the Bluetooth function is
active.
• Perform the Bluetooth Pairing
procedure again.
• Place your Bluetooth device
closer to the Cool Boss – it may
be out of range.
• Move your Bluetooth device and
the Cool Boss away from wireless
sources – you may be
experiencing interference.
• Turn the Cool Boss Audio
System off then on again.
• If you have multiple Bluetooth
devices, verify you are connected
to the correct device.
• In heavy Wi-Fi traffic areas,
multiple signals in close proximity
to the Cool Boss may take up a
lot of the frequency spectrum and
the Bluetooth may not have any
available spectrum to utilize.
• Move or replace the 4 GHz
cordless phone
Assistance with your Cool Boss is available from your dealer, by calling Cool Boss at
(805) 933-9970, or by emailing support@coolboss.com. You may also contact Cool Boss for
parts replacement (please have the serial number and model number of your unit available).
Cool Boss Evaporative Air Cooler 32 P/N 5900271 — September 2024 — Rev. A7
Float Switch Reset Procedure
The Cool Boss Pump will be damaged if allowed to operate without water. A float switch incorporated
into the pump prevents activation when the reservoir has emptied or is close to empty. This switch
must be reset through the procedure described below
before
operating the Cool Boss.
To Reset the Float Switch:
Verify the Cool Boss is disconnected from power.
Fill the reservoir with water to its maximum capacity. This will force the Float Switch to reset.
NOTE! Partially filling the reservoir will not reset the Float Switch.
• The reservoir may be filled through the water inlet connector using a standard ¾ in. hose. The
Reservoir Float Valve will close before the maximum fill level is exceeded.
• Alternatively, the reservoir may be filled manually through the inlet found below the Reservoir Fill
Level Guage.
Remove and dry any spilled water around the Cool Boss.
Connect the Cool Boss Evaporative Cooler to power.
Press the Power button. If the Control Panel indicates a low water condition with an illuminated
Red water drop symbol and the Reservoir Fill Gauge indicates some level below maximum,
the pump will not activate. Continue to add water.
The Float Switch is reset when the green water drop symbol is illuminated on
the Control Panel, the Reservoir Fill Level Gauge indicates MAX., and the Cooling
Pump will function when the Cooling Button is pressed.
IMPORTANT! The Float switch will NOT reset if the Reservoir is only partially filled. The Reservoir
must be filled to its maximum to reset the Float Switch.
Assistance with your Cool Boss is available from your dealer, by calling Cool Boss at
(805) 933-9970, or by emailing support@coolboss.com. You may also contact Cool Boss for
parts replacement (please have the serial number and model number of your unit available).
Cool Boss Evaporative Air Cooler 33 P/N 5900271 — September 2024 — Rev. A7
Parts Diagram
Item Qty.
Part
Number
Description
1 16 5530010 Hex Head Bolt, M8 x 1.25 x 25mm
1 16 5545340 Washer, M8 x 25mm Flat
1 16 5545202 Washer, M8 x 15mm SL
2 Grill, Protective Fan Blade
3 5326286
Electric Cord; CB-16, CB-28, CB-36 (internal cord to connect electrical
components)
4
5 1 Outlet Pipe
6 1 set
5326293
Casters Set; CB-16L/CB-16H, CB-28 L/CB-28H (4-each/4 in. (101 mm) size
specific)
6 1 set 5326294 Casters Set; CB-36L / CB-36H (4-each/5 in. (127 mm) size specific)
7 1 Housing, Cooling Shell
8 1 5326288 Electronic Touch Pad Control Panel; CB-16, CB-28, CB-36 (all L/H models)
Cool Boss Evaporative Air Cooler 34 P/N 5900271 — September 2024 — Rev. A7
9 3 Fasteners (Splash Guard)
Item Qty. Part
Number
Description
10 2 Switch Cover Plate
11 1 Media Holder Splash Guard
12 1 Bonnet, Spray Bar
13 2 5326301 Spray Bar End-Cap; CB-16, CB-28, CB-36 (all L/H models) 2 per unit.
14 1 5326300
Clear Tubing; CB-16, CB-28, CB-36 (all L/H models; 3/4 in. (19 mm) inside
diameter x 8 ft. (2.4 m) for Constant Water Inlet Connection to Shut-off Valve
and Submersible Pump to the Spray Bar)
15 Valve, Flow Control
16 Mounting Bracket, Control Valve
17
18 Clamp, Wire Spring
19 1 Bracket, Submersible Pump Mount
20 1 5326283 Submersible Pump; CB-16L (110V)
20 1 5326284 Submersible Pump; CB-28L (110V)
20 1 5326285 Submersible Pump; CB-36L (110V)
21 2 Clamp, Wire Spring
22 1 Bolt, Float
23 1 Regulator, Inlet Water
24 1 Adapter, Hose
25 Hose, Float
26 5326295
Constant Water Inlet Shut-Off Valve; CB-16, CB-28, CB-36 (all L/H models)
(Float Valve)
27 3 5326296
Honeycool™ Evaporative Media Pads; with Resin Face; CB-16L / CB-16H (3-
pads for each unit)
4 5326297
Honeycool™ Evaporative Media Pads; with Resin Face; CB-28L / CB-28H (4-
pads for each unit)
Cool Boss Evaporative Air Cooler 35 P/N 5900271 — September 2024 — Rev. A7
5 5326428
Honeycool™ Evaporative Media Pads; with Resin Face; CB-36L / CB-36H (5-
pads for each unit)
Item Qty.
Part
Number
Description
28 1 5326292
Electric Power Cord w/ GFCI; CB-16L, CB-28L, CB-36L (voltage specific with
110v plug attached)
29 5326299 Remote Control And Holder; CB-16, CB-28, CB-36 (all L/H models)
30 1 Fan Shroud (Venturi)
31 Blade, Fan
32 1 5326289 Variable Speed Fan Motor 110V; CB-16L (voltage specific)
1 5326290 Variable Speed Fan Motor 110V; CB-28L (voltage specific)
1 5326291 Variable Speed Fan Motor 110V; CB-36L (voltage specific)
33 1 Floodlight, LED
34 Speaker
35 Water Level Indicator Assy.
36 5326287
Spray Bar; CB-36L/CB-36H (size specific; distributes water to the top of the
media)
Spray Bar; CB-28L/CB-28H (size specific; distributes water to the top of the
media)
Spray Bar; CB-16L/CB-16H (size specific; distributes water to the top of the
media)
37 N/A
38 1 5326302 Fill Cap; CB-16, CB-28, CB-36 (all L/H models)
39 1 5326303 Protective Cover CB-16L /16H (size specific)
1 5326304 Protective Cover CB-28L /28H (size specific)
1 5326305 Protective Cover CB-36L /36H (size specific)
Cool Boss Evaporative Air Cooler 36 P/N 5900271 — September 2024 — Rev. A7
Labels
Cool Boss Evaporative Air Cooler 37 P/N 5900271 — Rev. A7 — July 2024
Cool Boss Evaporative Air Cooler 38 P/N 5900271 — Rev. A7 — July 2024
Cool Boss Evaporative Air Cooler 39 P/N 5900271 — Rev. A7 — July 2024
Maintenance Log
