Introduction

The Guardian Technologies Odor Reducing Air Purifier AC9400 is designed to create a healthier indoor environment by effectively reducing odors and allergens. Featuring a 360-degree True HEPA filter, it captures 99.97% of dust, pet dander, and other airborne particles as small as 0.3 microns. Ideal for large rooms, this purifier circulates air multiple times per hour, ensuring fresh and clean air throughout your space. Priced at approximately $229.99, it combines advanced filtration with user-friendly features for optimal air quality.

Specifications

Advanced 3-stage filtration system: Pre-filter, True HEPA filter, and Activated Carbon filter
Covers rooms up to 335 square feet
CADR (Clean Air Delivery Rate) of 150 CFM
Quiet operation with three speed settings
Night light feature with adjustable brightness
Filter change indicator for maintenance reminders
Compact and modern design

PARTS

CONTROL PANEL

Description

The Guardian Technologies Odor Reducing Air Purifier AC9400 boasts a robust 3-stage filtration system. The pre-filter captures large particles such as dust and hair, while the True HEPA filter traps 99.97% of particles as small as 0.3 microns, including allergens and bacteria. The Activated Carbon filter specializes in reducing odors and volatile organic compounds (VOCs), ensuring a fresher and cleaner air environment.

The device features a user-friendly interface with three speed settings and a night light that can be adjusted for comfort. The filter change indicator ensures you never forget to replace the filters, maintaining optimal performance.

OPERATING INSTRUCTIONS

BEFORE OPERATING THE DEVICE

Select a firm, level and flat location for the air purifier.
- For proper air flow, locate the unit at least 1 foot from any wall or furniture.
- Make sure none of the grills are blocked.
Plug the power cord into a 120V AC outlet.
When moving the air purifier, always lift it by the carrying handle.

OPERATING THE AIR PURIFIER

Turn unit power ON by pressing the control on the top of the unit.
Note: The purifier will not work if the front panel is not closed. The first time the unit is plugged in and power on, the air quality sensor will take a few minutes to calibrate.
Select Fan Speed or Turbo
Fan: Mode 1, 2, 3
Turbo Speed - Maximum Airflow & Allergen Control
Timer - If you prefer to run the purifier for a specific number of hours. Press timer control to select hours – up to 12 hours. After selected, the display will refresh to the main display. To cancel timer: hold the timer button for 5 seconds.
Sleep Mode - Press to dim display lights. When selected, the lights will dim and the air purifier will run in low speed. Press any control to exit from sleep mode.
Ionizer - Press to turn on ozone-safe ionizer function. The Ionizer can enhance ability to remove particles and keep the air fresh. Press again to turn off.
Auto Mode - Press to select Auto Mode and the display will show "A". When in "Auto" the fan speed will change depending on the air quality level in the room. See AQM below.
Optical Sensing in "Auto" mode: when the room is dark for over 1 minute, the unit will enter into sleep mode automatically (low fan speed, dim display). When the sensor detects the room is light, the unit will restore to standard Auto mode after 30 seconds.
Child Lock - Press and hold for 3 seconds to lock control panel so controls cannot be adjusted. Press and hold for 3 seconds again to turn feature off.
Filter Change Indicator flashes to indicate it is time to change the filter. Replace the filter according to instructions. Press and hold Filter Control to reset the reminder. Hold Filter Control reset down for approximately 8 seconds, the unit will beep before flashing indicator stops.

Air Quality Monitor (AQM): detects the amount of particulate matter (PM2.5) in the air. The light bar under the display is the AQM indicator and it will change colors, indicating the air quality level in the room. The particulate matter value will be displayed on the control panel. See values and status ranges in chart below.
Below are the color values that can be displayed and the fan speed "AUTO" mode will automatically select.

Light Color	Particulate Matter Value (Range)	Air Quality Status	Auto Fan Speed
Green	0-100	Good	1
Yellow	101-200	Average	2
Red	201-300	Poor	3
Red	301-500	Very Poor	Turbo

RESETTING THE DEVICE

The air purifier is equipped with a motor protection circut. If activated, the overload warning indicator will initiate and cut off the power. An audible warning "chime" will sound for 60 seconds along with a flashing error "Err" warning on the display. To restart the unit, unplug the unit for 10 minutes, then plug back in and power on.

Note: If the unit continues to shut down, there may still be an abnormal condition and the unit may need service.

FILTER REPLACEMENT

The Replace Filter Indicator light will flash when it is time to replace the filter. Depending on usage and environmental conditions the filter will last approximately 6 months. The filter will be covered in dust when it is dirty and needs replacing. It is important to maintain and change the filter to continue to optimize the performance of the purifier.

DO NOT wash and re-use the filter. Please contact Customer Service to purchase a replacement filter. Use only Genuine Guardian Technologies Replacement Parts to optimize the performance of your air purifier.

Turn off and unplug the unit.
Remove the front panel by pulling cover from sides and lift panel from base.
Unlock filter by rotating lever to the left.
Replace with new filter. Closed end of filter should be on the bottom. Open end on top.
Lock filter by rotating lever to the right.
Return the front panel. First insert the front panel bottom hooks then close.

NOTE: Make sure front panel is closed properly. Unit will not function when panel is open.

REPLACEMENT FILTER
FILTER:
Filter
Model No. FLT9400 K

Setup Guide

To set up the Guardian Technologies Odor Reducing Air Purifier AC9400, follow these steps:

Unbox the air purifier and all included accessories.
Remove any plastic wrapping from the filters and insert them into the device according to the manual instructions.
Place the air purifier on a flat surface away from walls and obstacles.
Plug in the power cord and turn on the device.
Adjust the speed setting and night light as desired.

No assembly is required; the device is ready to use out of the box.

CLEANING & MAINTENANCE

CLEANING

Always unplug the appliance before you clean it. Never immerse the appliance in water or any other liquid. Never use aggressive or flammable cleaning agents such as bleach or alcohol to clean any part of the appliance.

BODY OF THE APPLIANCE

Regularly clean the inside and outside of the body to prevent dust from collecting on the inside and outside.

Wipe away dust with a soft dry cloth from the body of the appliance.
Clean the air inlet and the air outlet with a soft dry cloth.

PRE-FILTER SCREEN

The pre-filter is designed to collect larger dust and debris and should be cleaned monthly or more frequently depending on use. Clean regularly with the brush attachement or your vacuum cleaner.
This will remove the lint and dirt and help maintain the life of the filter (see filter replacement to locate and remove filter).

NOTE: Do NOT stick any foreign objects or your fingers inside of the unit.

Caution
Do NOT use gasoline, benzene, thinner, harsh cleaners, etc. on and/or in the unit while cleaning as they will damage the product.

NEVER use alcohol or other solvents

What is CADR?
CADR stands for "Clean Air Delivery Rate," which indicates the volume of filtered air delivered by an air purifier. CADR ratings show the effectiveness of how efficient the air purifier is at capturing fine particles from things like tobacco smoke and plant pollens from the room.

Clean Air Delivery Rate
From air cleaner to air cleaner, compare the CADR numbers. First look at suggested room size. Then refer to the Clean Air Delivery Rate (CADR) numbers. The higher the number, the faster the unit filters the air.

TROUBLESHOOTING GUIDE

PROBLEM	SOLUTION
Unit shuts off unexpectedly or does not operate	Check that the unit is plugged into a working electrical outlet. Check that the motor protector is triggered. Check that the filter is in the unit and locked. Check that the front panel is latched firmly in place.
No air circulating from unit	Unplug unit. Check filter. Replace filter if necessary.
Increase in noise level	Make sure the filter is clean. Replace if necessary.
Odors and smoke are not removed	Clean or replace the filter if it appears to be heavily soiled.
The discharged air has an aroma or odor	Check to see if the filter is heavily soiled. Replace the filter. Turn off the Ionizer.

WARRANTY

Please go to www.guardiantechnologies.com to register your product. We consider the registration process important to ensuring superior service to our customers, however submitting the warranty registration is optional and does not affect your rights to utilize this warranty according to the conditions stated above.

Pros & Cons

Pros

Effective odor reduction and air purification
Coverage for medium to large-sized rooms
Quiet operation with multiple speed settings
Night light feature for added convenience
Filter change indicator for easy maintenance

Cons

Filter replacement costs can add up over time
May not be as effective in extremely large or heavily polluted spaces
No built-in smart features or app connectivity

Customer Reviews

Customers have generally praised the Guardian Technologies Odor Reducing Air Purifier AC9400 for its effectiveness in reducing odors and improving air quality. Many have noted its quiet operation and user-friendly interface. However, some users have mentioned that the filter replacement costs can be a bit high.

Common complaints include the lack of smart features and the necessity of regular filter replacements.

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