BROAD Clean Air SQ300-D User manual

1-YEAR WARRANTY
OPERATION AND
MAINTENANCE MANUAL
2021 03 English
SQ300-D
BROAD Disinfected Fresh Air

1
SAFETY INSTRUCTIONS
CONTENT
Controller Interface ………………………………………………………01
Operation …………………………………………………………………02
Product Composition ……………………………………………………04
Maintenance & Warranty ………………………………………………05
Electrostatic Cleaner & Coarse Filter Cleaning ……………………06
HEPA Filter and UV Light Replacement ………………………………08
Installation …………………………………………………………………09
Troubleshooting ……………………………………………………………12
Service Policy ………………………………………………………………13
1. Please read this manual carefully and retain for future use
2. Make sure that the power voltage is consistent with the voltage
indicated in the label pasted on the machine
3. The power cord shall comply with local standards. If it is
damaged, it must be repaired or replaced by the manufacturer
or a qualified professional to avoid electric shock
4. The grounding wire shall well insulated
5. When opening the machine door, do not press the safety switch
with hands or other objects to prevent electric shock and avoid
scratching
6. Turn off the master power switch and remove the cover plates
before cleaning the internal parts or performing maintenance
7. Do not block the fresh air inlet and outlet
8. This product is not suitable for people with poor physical,
sensational or mental condition (including children)
9. Do not dispose of this product with ordinary garbage. Take it to
a qualified electrical waste station for recycling.
CONTROLLER INTERFACE
5/31/2020 15 : 45 35.6 ℃
300 50
m3/h
CO2680 ppm
seting UV
Hz
On Off
The main interface contains the power switch,
air volume control, UV disinfection control and
parameter settings
Press “ ” or “ ”to increase or decrease
the fan frequency in 1 Hz increments.
Frequency range is 20~50 Hz
To preset the UV disinfection time, press “ ”
Press “ ” to set up system parameters
The backlight will be off with no operation for 30
seconds. Press any part of the screen to light up
the screen
Press “ ” to Power On, Press “ ” to
Power Off
Off
On

2 3
OPERATION
UV Disinfection Control
Off
Disinfect for 1 hr
Cancel Enter
Disinfect for 2 hr
Disinfect for 4 hr
Date and Time Setting
Time：
Date：
Mode： Fresh Air
Purification
Lock screen time
off 30s 60s 12 0 s
Cancel
2020/05/31
:40
Enter
16
OPERATION
Wash the coarse filter and electrostatic cleaner
Replace the medium efficiency filter
Replace the HEPA filter
Fan fault
Temperature sensor fault
RS-485 communication fault
Enter
Off: Turn off the UV light
Set up the UV disinfection time for 1, 2, or 4 hours
Press “Enter” to confirm or “Cancel” to cancel the
setting of disinfection time
Press “Home” to return to the main interface
Set up the time and date, mode and auto-lock time
When the auto-lock time is set to "off", the auto-lock
function is disabled
Press "enter" to confirm
Please calibrate every six months
The above interface will pop up automatically to
remind the user to clean the coarse filter and the
electrostatic cleaner after 720 hours of cumulative
use. After powering on again, the system will
regard it has having been cleaned
The above interface will pop up automatically to
remind the user to replace the medium efficiency
filter after it has been used for 6 months, or to
replace the HEPA filter after it has been used for
12 months. After powering on again, the system
will regard it has having been replaced
The above interface will pop up automatically
to remind the user to replace the UV light after it
has been used for 8000 hours. After powering on
again, the system will regard it has having been
replaced
The above interface will pop up automatically
when the fan, the temperature sensor or the
communication system fails
Press "home" to return to the main interface,
and press "enter" to reset and return to the main
interface

4 5
COMPONENTS
Electrostatic cleaner
Medium
efciency lter
HEPA Filter
UV Disinfection
Fresh air from outdoors
Coarse lter
Controller
Ex-factory Accessories
Warranty:
BROAD clean air products take "best
purification effect", "minimum energy
consumption", "zero downtime" and "40-
year lifespan" as its maintenance goals.
For cleaning and maintenance, please
refer to "Operation and Cleaning" posted
on the machine and the user manual
for more details. Each maintenance
must strictly follow the maintenance
procedures and record the steps in detail.
The maintenance work for commercial
users is suggested to be completed or
supervised by BROAD service engineers
(or BROAD authorized service providers).
Domestic users can perform maintenance
by themselves or entrust BROAD
Precautions:
1. It is recommended to keep the fresh air
machine running at 30 ~ 40Hz, which
can be tuned higher when the number
of people increases. Do not run it at full
load if not necessary
2. Keep the doors and windows closed
tightly to ensure a slight positive pressure
indoor
3. Turn off the range hood and exhaust fan
immediately after cooking
4. Note that smoking and incense burning
will affect air quality
Note: the ventilation function
will deteriorate if the HEPA
filter is plugged up
Filter Cleaning and Replacement
MAINTENANCE & WARRANTY
Fresh air blower
Clean fresh air outlet
1. Electrostatic cleaner and coarse lter
cleaning
• Every 1~3 months, depending on dust
thickness
2. Medium efciency lter replacement
• Every 3~6 months, depending on dust
thickness
3. HEPA lter replacement
• Frequency: Every 1~2 years,
depending on dust thickness
• Record the next replacement time on
the new HEPA lter
4. UV light replacement: Once a year
• Every 1~3 years
• Wipe the fan and the machine's inner
case with a wrung wet towel, be
careful not to scratch the fan blades
5. Internal component cleaning
• Frequency: Every 1~3 years
• Wipe the fan and the machine's inner
case with a wrung wet towel, be
careful not to scratch the fan bla
• Air duct kit X 1
• Cover plate X 1
• Expansion bolt X 4 sets
specication: M8x80
• Screws X4, M4x10
•
Special brush for electrostatic cleaner × 6
• Air ow vent strip x 1 bag

6 7
Cut off the power, open the door,
and remove the electrostatic cleaner
Clean the electrostatic cleaner every 1~3 month. If the electrostatic cleaner has
collected over 1.5 mm of dust, it must be cleaned immediately
Remove the electrostatic cleaner
ELECTROSTATIC CLEANER CLEANING
Use the special brush to
brush clean the grille
Pay attention not to scrape off
the tungsten filament
Spray the detergent over
the electrostatic cleaner
Best to spray in a tub
Shake the water
off and dry the
electrostatic cleaner
with a blower or in
the sun thoroughly,
put it back
Shake the water off and dry
the electrostatic cleaner
with a blower or in the sun
thoroughly, put it back
Rinse the electrostatic
cleaner with clean
water (cool or warm)
Clean the fan and the inner
case every1~3 years
Cleaning Method:
Detergent Cleaning
Blow dry after cleaning
Fan Cleaning
ELECTROSTATIC CLEANER & COARSE FILTER CLEANING
Spray the detergent over
the electrostatic cleaner
Best to spray in a tub
Rinse the electrostatic cleaner
with clean water (cool or warm)
Cleaning Method:
Detergent Cleaning
Blow dry after cleaning
Clean the coarse filter every 1~3 month
Electrostatic
Cleaner

8 9
Take out the old HEPA filter Removing the old UV light
The medium efficiency filter should be replaced every 3~6 months, and the HEPA
filter and UV light should be replaced every year
HEPA FILTER AND UV LIGHT REPLACEMENT
Shut off the power, open the door,
hold the HEPA filter evenly with
both hands, pull it out
HEPA
filter
UV Light
INSTALLATION
Test Run
Installation Process
• After installation, check the controller
settings according to the "Operation"
guidance stipulated in this manual
• Focus on the particle purification effect,
temperature and carbon dioxide
concentration
• Take out the electrostatic cleaner for
inspection after one day of operation.
If the cleaner collected no dust, there
must be a fault. Please inform BROAD
immediately
1. Preparation
• Complete materials without damage,
reliable tools
•Prepare thin films to cover the room from
dust
2. Drill holes for air inlet and outlet
• Avoid the beams and bearing walls.The
exterior hole should be 5~10mm lower
than the the interior hole to prevent
rainwater entering the room
• Air ducts must be strong and tight, finish
the installation in one day
• There should be enough maintenance
space by the door side
Notes:
Load the new HEPA filter Install the new UV light
The loading steps of a new HEPA filter
are opposite to that of removing it
Keep the arrow on the HEPA filter
pointed in the same direction as it was
taken out
Hold the HEPA filter evenly with both
hands, push it in carefully
Record the next replacement time on
the new HEPA filter
Disconnect the power, open the door
and take out the HEPA filter. Unplug the
power cord at the right side of the UV
light, pull out the bottom base, and take
out the UV light
Preparation:
Determine the machine and air ducts
installation location, draw lines, prepare
tools and accessories
Drill the holes
Drill the fresh air outlet hole and
mounting holes according to the lines
Machine positioning:
Remove the round cover plate on the
back of the machine and install the
square cover plate at the bottom
Machine installation
Place the machine against the opening
on the wall, secure it with screws, and
then plug in
Air ducts installation:
Put the air duct kit into the wall, make
sure the air inlet grille faces downward.
Fill the gap between the air duct and
the wall with foaming agent
The installing steps of a new UV light are
opposite to that of removing it
Note: Please consult BROAD before
replacing the filters or UV light, which can
be purchased at BROAD shops or through
the service hotline [phone]

10 11
INSTALLATION ILLUSTRATION
Special Notes:
(Unit: mm)
Outdoor Indoor
Clean
fresh air
machine
Installation
bolt
INSTALLATION DIMENSIONS
472
578
180
140
1060
472
396
396
240
Fresh
air from
outdoors
The fresh air can be sent to the room
either through air ducts or directly from
the machine
The room maintains a slight positive
pressure while ventilation is carried out
by the fresh air machine
While connecting the fresh air ducts,
rainwater must be prevented from
seeping in
Maintenance space≥1000

12 13
8. Service Hotline
It is strictly prohibited for BROAD service
engineer to privately collect service
fee without permission, or sell other
manufacturers' products for profit.
Otherwise, the case will be filed as
suspected corruption or fraud for further
investigation
24 hrs Service Hotline:
400-883-9333
E-mail: [email protected]
Can be purchased at BROAD shops or
through the service hotline
①Annual Service Agreement
It is recommended that the user
sign an annual service agreement
with BROAD (or a BROAD authorized
service provider), with the charge
be determined by the size, function,
number of units and service years of the
machine, plus the travel expenses of
service personnel. The annual service
agreement shall be in standard format
②Single service
• The user can contact BROAD for a single
service agreement to purchase spare
parts
• If the user decides to do maintenance
work by themselves and encounters a
major failure of the unit, the user can
ask for help from BROAD or a BROAD
designated service provider. The
maintenance fee will be determined
by the parts price and maintenance
hours, plus the travel expenses of service
personnel
6. Service Discipline
7. Paid Service
SERVICE POLICY
2. Warranty (only for service stipulated in ①)
3. Coarse filter and electrostatic
cleaner cleaning
4. Filters and UV light replacement
service
1. Service Classification
5. Service Standards
• 1-year warranty from the date of
purchase
• For problems caused by design,
manufacturing or factory transportation,
free repair or replacement shall be
provided. Repair work will be charged
for other causes
• Damages caused by natural disasters,
substandard power or human error will
not covered by the free warranty
• Free warranty does not include lter
cleaning and replacement
• Users can also sign a long-term warranty
agreement with BROAD
• BROAD Customer Center can provide
paid single or annual service
• See page 6 for self-maintenance
method
①Equipment maintenance and repair
②Coarse filter and electrostatic cleaner
cleaning
③Medium efficiency filter, HEPA filter and
UV light replacement
Item Standard
Regular
maintenance
and
accessory
replacement
Strictly abide by
the maintenance
requirements
Maintenance
Quality
Ensures the long-term
air quality of each unit
meets the standard
of Indoor Air Quality
Checklist
Note: for items marked with *, seek help from BROAD or a BROAD designated service
provider immediately
No. Problem Cause Solution
1 The fan is
making noise
1. The fan bearing or rotor is
faulty
2. The wall surface is uneven
1. Examine and repair *
2. Fasten the blots or smooth the
wall surface *
2 There is no
air coming
out from the
machine
1. The door is not closed tightly
2. The fan is faulty
3. The power plug is loose
1. Shut the door again
2. Examine and repair *
3. Reconnect the power
3 The screen
interface is
garbled
There is electrostatic interference Open the door and shut it again
4 The
electrostatic
cleaner does
not absorb dust
1. The tungsten filament is broken
2. The electrode grid is bent
3. Power failure
Repair or replace the
electrostatic cleaner *
5 Bad dust
absorption
performance
The electrostatic cleaner or the
power connection is faulty
Contact BROAD for examination
and repair *
6 Poor
purification
efficiency
1. There is a possible air leakage
in the HEPA filter
2. The room positive pressure is
not high enough
1. Examine and reinstall the HEPA
filter
2. Make sure the rooms are in
positive pressure
7 The
electrostatic
cleaner does
not fit
The electrostatic cleaner is
installed backward
The arrow direction should be
inward
8 The cleaning
prompt
appears
repeatedly
The default "cleaning cycle" is
too short
Extend the "cleaning cycle" in
setting
9 There is a
cracking sound
1. The electrostatic cleaner is not
dried thoroughly
2. The electrostatic cleaner has
collected too much dust
1. Remove it and blow dry
2. Clean it
10 The fresh air
volume is
insufficient
1. Wrong frequency setting
2. The air inlet/outlet is blocked
3. The coarse filter has collected
too much dust
4.The medium efficiency filter
and HEPA filter has collected
too much dust
1. Reset
2. Clear the inlet/outlet
immediately
3. Clean or replace the coarse
filter immediately
4. Replace the HEPA filter with a
new one
TROUBLESHOOTING

2021.03 Version 1 Copies: 2,000
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typesetting and plastic-free
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100g
BROAD Town, Changsha, PRC
Service: 400-883-9333
Sales: 400-677-6666
Fax: [phone]
Web: www.broadair.net
BROAD Fresh Air Purier has obtained domestic and
international quality and safety certications