AirTech S Series Troubleshooting guide

S SERIES CLEAN BENCH
Models：VS-840K、VS-840K-U、VS-1300L、VS-1300L-U
HS-840、HS-840-U、HS-1300、HS-1300-U
OPERATION, MAINTENANCE & SERVICE
INSTRUCTION

CONTENT
1. Product Intro & Precautions ……………………………………… 1
◆ Characteristics
◆ Operation Condition
◆ Safety Precautions
2. Specifications ……………………………………… 3
3. Structure Characteristic ……………………………………… 4
4. Work Principle ……………………………………… 5
5. Installation ……………………………………… 5
6. Operation ……………………………………… 6
7. Troubleshooting ……………………………………… 9
8. Transport and Storage ……………………………………… 9
9. Unpacking and Check ……………………………………… 9
10. Maintenance ……………………………………… 10
11. Attached Drawings ……………………………………… 12
12. Packing List ……………………………………… 13
FOREWORD
We are grateful for you to be our customer sincerely and believe this product will
improve your technical environment, and will have good effect on improving the
products quality.
Please read the instruction to understand this product well in order to make this
product run most effectively. Put this instruction in the proper place so that it can be
used as a reference conveniently.
Please contact the dealer or our company if there is any problem.

No. Item Qty Remark
1. Documents
1.1 Certificate of Product 1 copy
1.2 Instruction for Use 1 copy
2. Description of Product
2.1 Series HS/VS Clean Bench 1 set
3. Spare Parts
3.1 Pre-filter 1 piece HS-840 / 840-U
VS-840K / 840K-U
2 piece HS-1300 / 1300-U
VS-1300L /1300L-U
12. PACKING LIST
SUZHOU ANTAI AIRTECH CO. LTD
NO. 2 WEIXIN RD. SUZHOU INDUSTRIAL PARK
SUZHOU, P. R. CHINA 215122
HOT LINE: 0512-65315246
FAX: [phone] S-1512-⑥EN

1
⑴. Characteristics:
S Series Clean Bench （herein after briefly called Clean Bench ）is a kind of
general-purpose air purifying equipment that provides local high cleanliness work
environment. It is mainly used in medical institutions, and also industries and scientific
laboratories such as electron, national defense, precision instrument & meter, pharmacy,
chemical industry, agriculture and biology etc. It may help on improving process
environment, product quality and product yield.
⑵. Operation Condition:
Temperature：5℃～40℃.
Relative Humidity：no more than 90%(at 40℃).
Air Pressure：86kPa～106kPa.
Altitude：Under 2km
Pollution Degree：2
Overvoltage category：II
Max. Concentration：3500 Particles/L (@≥0.5μm).
Power Source：AC 220V±22V, 50/60Hz±1Hz.
⑶. Safety Precautions:
◆Basic Safety Precautions:
zClean bench is indoor equipment, please do not use it outdoors. And Keep the
product away from dust and vibration sources.
zClean bench is not explosion-proof, it is strictly prohibited to use it in flammable and
explosive environment.
zPlease put clean bench on the even ground and keep it away from air flow
interference.
zDo not clean the clean bench with organic solvent so as to avoid damaging the
surface coating or causing discoloration.
zDo not use the product in the low/high temp, wetter, dew over, lampblack, dusty and
chemical etching locations.
zDo not wash the clean bench with water.
zDo not impact against glass in order to avoid injury of human body.
zReserve enough maintenance space while locating the clean bench.
1. PRODUCT INTRO & PRECAUTIONS

2
◆Electrical Safety Precautions:
zPlease locate the product on its place before wiring and power on.
zMake sure the rated voltage and frequency of the product conform with the input
power specifications to avoid damaging the electric units and causing fire.
zThis product must be reliable grounding to ensure its safe use.
zIt is forbidden to refit the electrical wiring of the product without authorization.
zDo not put the weight on the power supply lead or clamp it, so as not to cause fire,
electric shock due to power supply wire breakage.
zDuring maintenance, only the professional electrical personnel are allowed to replace
the fuse inside the molten core, and ensure that its capacity specification and type
are the same as the original, shall not alter its capacity.
zPlease shut off the power supply when stopping using for long time.
◆Operation Safety Precautions:
zProhibit ON/OFF the switches repeatedly in a minute, in order to avoid damage due
to frequent movements.
zDo not do record, writing on the clean bench, so as not to interfere with the airflow
form.
zDo not block the air inlet of the per-filter, so as not to affect the intake-air volume.
zIf the product was working abnormally, should stop running and shut off the power
first, then inform the professionals to repair, can also contact the distributor or the
manufacturer.
◆Special Notice:
zBefore leaving factory, the fan has been set in “STD” mode. Please read this manual
carefully to familiarize yourself with this product, and keep this manual near the clean
bench for convenient reference.
zThe clean bench power cord must be connected to the grounded socket, to ensure
the safe use.
zFor the clean bench which is with UV light, it is forbidden to look straightly at the UV
light lest might cause injury of eyes.
zBan any item with biological hazards, toxic and harmful substances in the clean
bench, so as to avoid the operator injury or environmental contamination.
zRegularly check the filters’ condition and monitor its service life, deal with any
problem strictly according to maintenance clause.

3
◆Description of Label:
●Company Logo of SUZHOUANTAI AIRTECH Co. Ltd
●Caution Label
Pay attention to dangers that might happened during operation
●Pay attention to the electric components inside.
Model
Item
VS-840K
(VS-840K-U) HS-840 (HS-840-U) VS-1300L (VS-1300L-U) HS-1300 (HS-1300-U)
Cleanliness ISO 5/Class 100
Bacterial Colonies ≤0.5 CFU/culture-dish(φ90 mm ) (only for Model with “-U”)
Average Velocity 0.3m/s~0.60m/s
Noise ≤62 dB（A）
Vibration ≤4μm
Illumination ≥300 Lx
Power Source AC220V±22V，1φ，50/60Hz±1Hz
Max. Rated Power
(Exclude spare socket) 300VA 300VA 800VA 800VA
Weight 145 kg 125 kg 200 kg 170 kg
Dimensions
Work Area
W1 680mm 720mm 1140mm 1180mm
D1 650mm
H1 570mm 570mm 720mm 570mm
Overall
W 840mm 1300mm
D 825mm
H 1630mm 1435mm 1780mm 1435mm
Size & QTY of HEPA 760×610×50(mm)×① 610×610×50(mm)×②
2. SPECIFICATIONS

4
As shown in Fig.1 & 2, the clean bench consists of the body case, HEPA filter, air supply
fan unit, working table and control panel etc. The body of the case is made of thin steel
plate and its surface is sprayed with lacquer.
1. HEPA Filter 5. Glass Window 9. Pre-filter
2. Fluorescent Light 6. SUS Table 10. Fan Unit
3. UV light(model-U) 7. Power Switch 11. Universal Caster
4. Sliding Door 8. Control Panel 12. Leveling feet
FIG.1：STRUCTURAL DIAGRAM OF SERIES VS CLEAN BENCH
1. Light (UV Light) 5. SUS Table 9. Pre-filter
2. Air Diffuser 6. Power Switch 10. Fan
3. HEPA Filter 7. Spare Socket 11. Leveling feet
4. Side Glass 8. Control Panel 12. Universal Caster
FIG.2：STRUCTURAL DIAGRAM OF SERIES HS CLEAN BENCH
3. STRUCTURE CHARACTERISTIC

5
The clean bench uses fan with variable air volume system, by switching the fan speed to
keep the average air velocity in ideal range; therefore prolong the service life of HEPA
filter.
The flow type of the Series VS Clean Bench is vertical laminar flow, and Series HS Clean
Bench adopts the horizontal laminar flow type.
The ambient air is taken by a centrifugal fan through a pre-filter into the pressure box, in
which it can be secondary filtered by HEPA filter and then the air with specified
cleanliness and specified air velocity will go into the working area and bring away the dust
inside to reform a high cleanliness environment.
⑴. The clean bench should be used in clean room or cleaner environment.
⑵. Please put the product on the even ground and keep it away from interferential air
flow.
⑶. Caution is necessary when opening the unit package and locating it. Collision or
falling is prohibited.
⑷. Please keep enough space for maintenance. (30cm from air inlet is recommended.)
⑸. Before power on, make sure the rated voltage and frequency of the product agree
with the input power specifications.
⑹. Before running, please make sure the input voltage and frequency is as required in
order to avoid damaging the electric units and causing fire.
⑺. The clean bench power plug must be connected to the grounded socket, to ensure
the safe use.
⑻. This product is equipped with Universal Wheels, can use them for movement. If the
ground is not suitable for wheels moving, please use forklift for handling.
⑼. This product is an isolated machine, with no any accessories and no need to connect
with any other devices while using.
4. WORK PRINCIPLE
5. LOCATION

6
⑴Setting of Control Panel:
Air Velocity Indicator Air Velocity Indicator
Fan Button (with light) Fan Button (with light)
LightButton(withlight) Light/SterilizingButton
(With light)
FIG.3：SCHEMATIC OF CONTROL PANEL
As shown in the Fig 3, there are buttons on the panel: Fan Button (with light),
Light Button (with light), Light/Sterilizing Button (with light), and LED Air
Velocity Director.
◆Press repeatedly may change the running state of fan in turn.
6. OPERATION
Press
PressPress
Press

7
◆Press repeatedly may operate the on/off of fluo. light.
◆Press repeatedly may operate the on/off of fluo. light and UV light.
⑵Operation:
Before Leaving factory, fan has been set in “STD” mode.
◆Preparation:
At first, check whether the power cord has been plugged to the power socket reliably，
after confirmed, turn on the power switch (green) on the lower right side of the product
(at ”Ⅰ”).
Press Fan Button, its indicator is ON. The fan starts to work in the “STD” mode, its
corresponding LED is ON. And then Press Light/Sterilizing“ Button, the UV light will be
on.
To assure the cleanliness in the working area, let the clean bench run in the above state
for 20 minutes before normal operation starting every time. After that, turn off the UV light.
Take note to clean the surfaces of UV Light and work zone with appropriate disinfectant
regularly in order to ensure the sterilization effect.
Please keep far away from the UV light (for the Clean Bench with UV light) when it
is on, lest cause injury of eyes and skin.
Press
Press
Press Press
Press

8
◆Normal Operation:
During normal operation, press the Light/Sterilizing Button to turn on the light and keep
the fan running at medium speed (STD mode).
User also can switch the fan speed to high speed or low speed by pressing Fan Button
repeatedly as per need.
◆Operation finished:
After the operation is finished, keeps the fan running for more than 10 minutes
before turning off the fan by pressing the Fan button, press the Light/Sterilizing
Button to off the light, and last shut off the power.
⑵Operation Cautions:
zNewly installed clean bench or which is unused for a long time, it is recommended to
be cleaned with super clean vacuum cleaner or dust free cloth.
zWhen the clean bench is in use, please keep the sliding door at a proper height, too
high (to top) or too low (fall to work table) will affect the air velocity and cleanliness in
the working chamber.
zDo not put any unnecessary articles in the working chamber to prevent the airflow
from interference.
zForbidden to write on the working table and avoid obvious action that may disturb
airflow while working.
zDo not block the pre filter air inlet, lest affect the airflow volume and in the end reduce
the purification ability.
zThe product should be away from the electromagnetic interference.
zPlease keep the clean bench in normal working state when doing sedimentary
bacteria concentration test.

9
Please contact our company if there is no effect after taking above measures.
⑴. The clean bench usually uses wooden case packaging. General transport is
applicable to packed clean bench. Transportation and storage should be in strict
accordance with the packing, shipping and storage mark. Collision and flipping over
are prohibited. Protect against rain & snow in order to avoid rust and damage.
⑵. During transit, please choose a proper forklift according to the weight of clean bench.
⑶The clean bench shall be stored in the warehouse with -10℃~ +40℃temperature,
less than 85% relative humidity, and no corrosive gas such as acid and alkali.
⑴. Be careful when unpacking the unit to avoid defacing the clean bench in the package.
⑵. After unpacking, please verify the unit is the clean bench you ordered, then check all
the items carefully, make sure no missing items according to the Packing List and
also check if there is any damage occurs in transit, if yes, please inform the dealer or
us in time for future instructions.
Problem Cause Remedy
Inoperative buttons on
control panel
⑴. No power connection.
⑵.Faulty circuit board or
control panel.
⑴. Connect to the power supply reliably.
⑵ Check the wiring and fuse or replace
the faulty one if necessary.
The fan is in high
speed state but the air
velocity is still low.
⑴ .Pre-filter is dusty.
⑵ . HEPA filter failure.
⑴.
Clean Pre-filter or replace with new
one.
⑵. Replace HEPA filter.
Fan does not work. ⑴. Circuit failure, no output.
⑵. Fan failure.
⑴. Check the wiring or replace circuit
board if necessary.
⑵. Check or replace the fan.
No output of the
spare socket. Fusing due to overloading. Replace fuse with same capacity one,
choose proper external device.
The Light or UV light
cannot be on.
⑴. Light base or starter is
loose or damaged.
⑵. Tube damaged.
⑶Ballast damaged.
⑷Circuit failure.
⑴. Replace the starter.
⑵. Check it or replace the tube.
⑶ Check or replace ballast.
⑷Check the wring, replace the faulty
parts if necessary
7. TROUBLESHOOTING
8. TRANSPORT AND STORAGE
9. UNPACKING AND CHECK

10
1) According to the cleanliness of the environment, take down the pre-filter medium to
clear out regularly as shown in Fig.4 In general, the interval time is 3-6 months. After
2-3 times washing, please replace the pre-filter medium.
1. Batten 2.Medium 3.Frame of Pre-filter
FIG.4：SCHEMATIC DIAGRAM OF PRE-FILTER REPLACEMENT OF
S SERIES CLEAN BENCH
2) In general, once every two months, test the air velocity in the working area by
Hot-bulb anemometer. If air velocity is not in conformity with the requirements of
specifications, switch the Fan to high speed state.
3) If the air velocity is still less than 0.3 m/s when Fan running at high speed, then need
to replace the HEPA filter (normally the service life of HEPA filter is about 2~3 years).
After HEPA filter replacement, use airborne particle counter to check the entire filter
frame, if there is leak, take plugging measures.
4) The controller SAT07- AV（- CV）is provided by manufacturer, please contact
the manufacturer in case of any malfunction.
5) When replace the fuse, please pay attention of the fuse model: φ5×20，F4AL 250V.
or φ5×20，F4A L 250V.
6) When replace the light tube and the ballast, please note: light tube: T8 18 w, ballasts:
220V 20 W or light tube: T8 30 w, ballasts: 220V 30W. At the same time need to pay
attention to turn off the equipment power supply when doing any maintenance.
7) Always turn power off before cleaning or servicing the bench.
8) Pay attention to the following items when replacing HEPA filter:
zKeep the medium of HEPA filter in good condition when unpacking, transiting, &
installing. Do not touch it with hand.
zBefore replacement, must ensure the new HEPA filter has no damage in transit, check
the filter medium against the light can do.
10. MAINTENANCE

11
zWhile installation, open the back cover of the case of Series HS Clean Bench as
shown in Fig.5, open the top cover of the case of Series VS Clean Bench as shown in
Fig 6. The arrow mark on HEPA filter must be the same as the airflow direction of the
air outlet.
1.HEPA Filter 2.Clamp 3.Cover
FIG.5：SCHEMATIC DIAGRAM OF HEPA REPLACEMENT OF
SERIES HS CLEAN BENCH
1.Cover 2. Clamp 3.HEPA Filter
FIG.6：SCHEMATIC DIAGRAM OF HEPA REPLACEMENT OF
SERIES VS CLEAN BENCH
zWhen screwing up the clamp, please make proper spinning force well distributed to
insure the reliable airtight and firmness of the HEPA filter, and also to prevent HEPA
filter from leaking due to deformation.
zAfter the replacement, please scan the entire filter frame by airborne particle counter
to check the leak.
zIn order to prevent polluting the environment, please dispose the abandoned HEPA
according to the local requirement.

12
As for electric troubleshooting and maintenance, it is recommended to be performed only
by a qualified technician according to the attached Electrical Diagram.
BIT
CODE NAME
DESCRIPTION
VS-840K HS-840 VS-
840K-U
HS-
840-U
VS-
1300L
HS-
1300
VS-
1300L-U
HS-
1300-U
A Controller SAT07-1CV SAT07-1AV SAT07-2CV SAT07-2AV
FU Fuse φ5×20，F3A L 250V×②
M1-2 Fan ATF230×① ATF230×②
L1-2 Ballast 20W×① 20W×② 30W×① 30W×②
V1-2 Starter 4-40W×
①
4-40W×② 4-65W×
②4-65W×
①
4-65W×②
EL1-2 Fluo. Light 18W×① 18W×② 18W×① 30W×① 30W×
②
30W×①
UV1 UV Light 20W×① 30W×①
SA1 Boat Switch R221-22C-18A×①
XP Elec. Wire
with Plug RVV-3×0.75×①
FIG.7：ELECTRICAL DIAGRAM OF S SERIES CLEAN BENCH
11. ATTACHED DRAWINGS