Exact solutions V1000E User manual
Manual UVC Air Sanitizer V1000E
13.11.2020
Page 2of 33
Table of Content
1. Preamble................................................................................................................................ 3
2. Safety instructions................................................................................................................ 4
2.1 Warnings........................................................................................................................... 4
2.2 Risk Situations................................................................................................................... 6
3. Scope of delivery .................................................................................................................. 9
4. Spare parts and optional accessories (not included)......................................................... 9
4.1 UVC Tubes........................................................................................................................ 9
4.2 UVC Safe handheld measurement device......................................................................... 9
5. Description of the product.................................................................................................. 10
5.1 Intended Use................................................................................................................... 10
5.2 Specifications .................................................................................................................. 10
5.3 Airflow.............................................................................................................................. 10
6. Setup and operation............................................................................................................ 11
6.1 Notes on installation and operation.................................................................................. 11
6.2 Positioning and dimensioning .......................................................................................... 12
6.3 Mechanical setup............................................................................................................. 13
6.4 Electrical setup................................................................................................................ 15
6.5 Operation......................................................................................................................... 16
6.5.1 Operation with multifunctional switch......................................................................... 16
6.5.2 Operating via network ............................................................................................... 18
6.6 Periodic maintenance work.............................................................................................. 20
6.7 Errors, causes, measures................................................................................................ 21
7. Maintenance ........................................................................................................................ 23
7.1 Life time of UVC tubes..................................................................................................... 23
7.2 Cleaning / replacing the metal mesh filter ........................................................................ 24
7.3 Replacing UVC tubes ...................................................................................................... 26
7.3.1 Removing old tubes .................................................................................................. 26
7.3.2 Installing new Tubes.................................................................................................. 28
8. Disposal of components..................................................................................................... 29
8.1 UVC tube......................................................................................................................... 29
8.2 Electronical components.................................................................................................. 29
8.3 Steel parts and packaging ............................................................................................... 29
8.4. Disposal of entire devices............................................................................................... 29
9. Mechanical Drawing............................................................................................................ 30
10. Declaration of conformity................................................................................................. 31
Manual UVC Air Sanitizer V1000E
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1. Preamble
The AIR SANITIZER has been developed and manufactured with the highest care and attention.
However, improper handling can cause a risk for safety and / or damage. Read these
instructions carefully before handling and installing the product so that you can safely enjoy your
device.
Copyright © 2020 EXACT solutions GmbH. All rights reserved.
Manual UVC Air Sanitizer V1000E
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2. Safety instructions
2.1 Warnings
This manual must be handed over to the persons who install and operate the product.
Please read the manual and all instruction carefully. If you ignore the safety instructions
in this manual, humans may be seriously injured or there is a possibility of an accident or
death. Installation, handling, service and the like must be carried out by qualified
persons! Qualified persons, hereinafter referred to as “qualified persons”, are specialists
such as electricians and specialist personnel with equivalent or higher qualifications.
Warning: Electrical hazard, open the housing only when the device is
disconnected from mains power. Electrical work shall only be done by a
fully qualified and trained electrician. Follow the local laws and
regulations.
Warning: UVC radiation, open the housing only when the device is
disconnected from mains power. UVC harms within a very short time
eyes and skin. Never expose without protection to UVC radiation. Wear
safety equipment.
Warning: People who are permanently in the proximity of the device
should keep a distance of 0,5m to it as there is low amount of UVC light
emitted at the light traps of the device.
Warning: Danger breakage of glass, UVC tubes are made of silica glass
and are fragile. When handling UVC tubes wear safety gloves.
Warning: Installation, operation and maintenance only by trained fully
qualified personnel.
Warning: When the UVC tube is broken or damaged mercury can
vaporise. In this case ventilate the room. Dispose broken glass and other
pieces outside closed rooms in an appropriate way.
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•This product uses UVC light encapsulated in a housing. Direct radiation must be
avoided at all times. UVC light is dangerous for eyes and skin of human or
animals. It can cause serious accidents and burn the skin and cause significant
skin irritation. UVC light can cause serious injuries of the human eye. The UVC unit
of the AIR SANITIZER series is built into a housing with special light traps to
prevent the escape of UVC radiation. Do not use the product when it is damaged
so that UVC light could be emitted. Do not open the housing when the mains
power is connected.
•Make sure to connect the power cable to the grounded current and connect PE
(Protection Earth). Otherwise persons may be electrocuted or injured.
•Use the rated voltage only. The product can be damaged or persons may be
electrocuted or injured.
•Be careful not to step or place heavy objects on the power cord. Be careful not to
damage the power cord with sharp objects, by bending, stretching, cutting or
similar. Damaged power cords may cause a fire or electric shock.
•Never disassemble, repair or modify the Air Sanitizer product or any accessory.
This may cause serious accidents or death. Contact your vendor if you are in the
need of support.
•Prior to every installation, check all mounting threads as well as the complete
housing for any kind of defect and ensure correct function. If a damage or
defective function is detected do not keep using the product and contact your
vendor for service.
•Keep away from heat sources like heaters. Electrical shock, fire, malfunction or
deformation may occur.
•Keep the packing anti-moisture material or vinyl packing out of the reach of
children. This material is harmful if swallowed. Vinyl packing can cause
suffocation.
•If smoke can be smelled/detected or if you hear a strange sound or anything else
that is uncommon disconnect the device from mains power. For example, by
unplugging the power cord, using the main switch on the device or using a
corresponding wall switch. Contact your vendor. If usage is continued, electrical
shock or fire can occur.
•Do not drop an object or apply strong forces to the product. It can cause injury to
humans and damage the product.
•Do not use the product outdoors. This product is made only for indoor usage.
Using it outdoor can cause serious accidents and property damage
•Set up the Air Sanitizer in an open area so that air intake and outlet are free to
ensure a save and good functionality. Do not place it on cushions or carpets. If
ventilation is not working correctly fire can break out due to internal heat.
•Do not expose the Air Sanitizer to water or moisture to prevent any damage and
danger.
•If water or any foreign substance goes inside the product, disconnect the mains
power immediately and contact your vendor. Otherwise, this may cause a fire or
electric shock due to damage to the product.
•If you install the product in a place that does not meet the recommended
conditions, this may cause injuries to humans and cause serious damage to the
product’s quality, life cycle, and appearance. This caution applies to places where
there is an abundance of fine dust or oil mist, chemical substances are used, the
temperature is very high or low or the humidity is very high. This kind of
conditions will invalidate the warranty.
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2.2 Risk Situations
Risk of injury due to the possibility of falling objects during the assembly or disassembly
of the Air Sanitizer product.
•Protection objective: avoid injury from falling parts.
•Wear appropriate safety shoes, gloves and helmet.
•Make sure the area is clear under the product during installation and no persons are
present.
Risk of hitting the head with the Air Sanitizer product during set up or dismantle process.
•Protection objective: avoid injury from hitting the head.
•Wear a helmet
Incorrect installation may lead to certain parts of the Air Sanitizer product or the entire Air
Sanitizer product to fall down.
•Protection objective: prevent personal injury and property damage.
•Double check the Air Sanitizer and its installation.
Insufficient load capacity of the supporting structure may lead to certain parts of Air
Sanitizer product or the entire Air Sanitizer product to fall down.
•Protection objective: prevent personal injury and property damage.
•Provide adequate dimensioning of the supporting structure. The supporting structure
must be able to support the combined weight of all the equipment attached to, or hung
from it.
•Ensure correct installation of the supporting structure.
Only use correct mounting material to attach the Air Sanitizer product to the supporting
structure (wall, ceiling, truss etc). Otherwise parts or the whole system may fall down.
•Protection objective: prevent personal injury or property damage.
•Only use correct mounting material such as screws, screw anchor etc depending on the
given circumstances.
The fingers or the hand of the user can be caught between clamping ring of V1000E and
the housing during maintenance or service work
•Protection objective: prevent personal injury
•When clamping ring is removed and reinserted be careful to avoid personal injury. Wear
safety gloves.
Risk of product damage when touching the UVC tube or the reflector material with bare
hands.
•Protection objective: prevent product damage
•The UVC tube and the reflector material shall not be touched with bare hands as
moisture or oil on the hands can damage the product or reduce its performance.
•Wear clean and proper safety gloves
Risk of injuries by broken glass. The housing of the UVC tube is made of glass. If the
glass breaks, the persons who are doing service work may cut themselves with parts of a
broken UVC tube.
•Protection objective: prevent personal injury from broken glass.
•Be careful while handling the UVC tubes as they are fragile and always wear safety
gloves.
Risk of injuries by touching a hot surface. The glass and the ceramic housing of the UVC
tube gets hot during operation. When doing service work the UVC tubes might still be hot
although the system is turned off and disconnected from the power supply.
•Protection objective: prevent personal injury from touching hot surfaces
•Prior touching a UVC tube wait for it to cool down and wear safety gloves.
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Risk of injuries by UVC light.
•Protection objective: Prevent personal injuries by UVC light
•UVC light is harmful for eyes and skin of humans or animals. It can cause serious
accidents, burn the human skin and cause significant skin irritation. UVC light can cause
serious injuries to the human eye.
•When opening the housing of the Air Sanitizer while it is operating, the UVC light will be
exposed and leave the housing. This endangers all surrounding persons. The housing
shall only be opened when the device is turned off and disconnected from mains power.
Risk of injuries by UVC light.
•Protection objective: Prevent personal injuries by UVC light
•UVC light is harmful for eyes and skin of humans or animals. It can cause serious
accidents and burn the human skin and cause significant skin irritation. UVC light can
cause serious injuries of the human eye.
•During operation a certain amount of UVC light is emitted out of the housing. Only
persons are harmed that are very close to the device and that are staring at the device
for several hours.
Risk of injuries by UVC light.
•Protection objective: Prevent personal injuries by UVC light
•UVC light is harmful for eyes and skin of humans or animals. It can cause serious
accidents and burn the human skin and cause significant skin irritation. UVC light can
cause serious injury. UVC light is harmful for eyes and skin of human or animals.
•When the housing of the Air Sanitizer is damaged and still being operated the UVC light
might be exposed and leave the housing. This endangers all surrounding persons. If the
housing is damaged the product shall no longer be operated. Qualified persons should
disconnect the device from power supply and contact service partner. Persons
approaching the faulty device should wear appropriate personal safety equipment such
as face shield, clothes, gloves etc.
Risk of injuries by UVC light.
•Protection objective: Prevent personal injuries by UVC light.
•UVC light is harmful for eyes and skin of humans or animals. It can cause serious
accidents and burn the human skin and cause significant skin irritation. UVC light can
cause serious injury. UVC light is harmful for eyes and skin of human or animals.
•The light traps, clamping rings and cover rings (see figure
Figure 9) must always be mounted when the device is turned on, it additionally protects
against the UVC light rest radiation that escapes out of the housing.
Risk of injuries by breathing in mercury vapor.
•Protection objective: Prevent personal injuries by mercury vapor
•If a UVC tube is broken, the encapsulated mercury will be exposed to the air. Breathing
in mercury vapor is dangerous for the human body as mercury is toxic. This endangers
all surrounding persons.
•If a UVC tube is broken, the room should be ventilated immediately and everyone should
leave it until the broken glass and other parts have been properly disposed of outside of
closed rooms and the room has been adequately ventilated
Risk of injury or death by electrical shock.
•Protection objective: Prevent personal injuries or death
•If the housing of the device is opened, persons who work on the device can touch parts
that can cause an electrical shock.
•Always disconnect power supply before working on the device or opening the housing.
Working on the device and opening the housing should only be done by fully qualified
personnel. Follow local laws and regulations.
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Risk of injury or death by electrical shock.
•Protection objective: Prevent personal injuries or death
•If the housing of the device is damaged, deformed etc. there is an increased risk that the
inside is also damaged. Persons who touch the housing might get an electrical shock.
This endangers all persons who might touch a damaged product.
•When there is any damage, disconnect power supply of the device by qualified
personnel. Contact vendor / service partner.
Risk of injury or death by electrical shock.
•Protection objective: Prevent personal injuries or death
•Electrical failure might cause electrical power to be situated on the metal housing.
Persons who touch the housing might get an electrical shock. This endangers all persons
who might touch the failed product
•All electrical conducting parts are electrically connected and grounded to protection earth
contact by design of the product. Electrical devices should be tested in regular time
frames depending on local laws and regulations. UVC Air Sanitizers are devices of
protection class 1 and require a protective grounding and may only be connected to
circuits that are protected by a Residual Current Device (RCD)
Risk of injury, product damage or incorrect functionality
•Protection objective: prevent personal injury, product damage and incorrect functionality.
•Using non original spare parts may lead to incorrect functionality, broken devices or
injury of humans. These spare parts could be for example screws or UVC tubes This
endangers persons who are near the product and could be caused by falling objects,
electrical shock etc.
•Avoid incorrect functionality or product damage or injury of persons by only using original
spare parts.
Disposal
•Protection objective: avoid incorrect disposal and risk for humans and nature.
•Disposing the product needs to be done correctly following local laws and regulations.
Wrong disposal endangers mankind and nature.
Risk of product damage or injury by wrong cleaning procedure
•Protection objective: prevent personal injury and product damage
•No water, air pressure, immersion or anything else should be used to clean the UVC Air
Sanitizer. Incorrect cleaning procedure / treatment causes a risk for personal injury and
damage on the device.
•The UVC Air sanitizer product shall only be cleaned with a dry soft cloth.
Risk of product damage or injury by non-intended usage
•Protection objective: avoid personal injury and product damage
•The product shall not be used for other than its intended purpose.
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3. Scope of delivery
Note: Please check the delivery for completeness and damage immediately after
you receive the shipment. Please contact your vendor in case of missing or
damaged parts.
Item
quantity
Power cable CEE-7/7 to powerCON TRUE1
1
Manual
1
V1000E
1
4. Spare parts and optional accessories (not included)
4.1 UVC Tubes
The UVC tubes used in the product V1000E can be ordered under the following model number:
UVC light source, Type UVpro K40-4
4.2 UVC Safe handheld measurement device
Model number: ASZ-UVCSafe
UVpro Safe is a measuring instrument to determine a potential
UV-C exposure at the workplace. Based on directive
2006/25/EC, the UVpro Safe measures the current predominant
and biologically weighted UV radiation intensity and determines
the maximum permissible exposure time of the skin and eyes.
Bring the sensor to the source of radiation, the maximum length
of stay advised can be read directly on the display. The
displayed value is based on the assumption that the measured
UV radiation is constant during the entire working day. The
device may be used only for measurements on UVC low
pressure lamps. Don’t use when the source of radiation is
unknown.
Figure 1 ASZ-UVCSafe
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5. Description of the product
5.1 Intended Use
The V1000E is used to reduce germs, viruses, bacteria etc. in the ambient air. The device
directs air through the housing, which is equipped with tubes that emit UVC light. UVC light can
inactivate the DNA or RNA of a life form. This works very efficiently with simple life forms like
viruses and bacteria. The V1000E is designed for use in public areas and may only be operated
within the specifications given in the operating instructions. The efficiency of the germ reduction
depends largely on the installation and positioning. We or our partners would be happy to advise
you if you have any questions.
5.2 Specifications
Parameter
Value
UVpro tubes
6 x 41 W
Total UVC output [W 253,7 nm]
72
Air volume [m³/h]
500 to 1000 (variable)
UVC dose [mJ/cm³]
12,5 / 6,5 (see air volume)
Noise emission [dB(A)] min./max.
44 / 58
Mount
4 threads M8
Size [mm]
1199 x 331
Weight [kg]
29
Tube replacement interval [h]
12,000 (75 % +/- 5 %) output
performance
Supply voltage
230 V / 50 Hz
Input power [W]
300
Operating temperature [°C]
0 - 35
Operating rel. humidity [%rH]
10 - 75
Operating height over normal height null [m]
Max. 1750
Remote control
LAN
Operation area
Indoor in closed rooms
5.3 Airflow
Figure 2 Airflow V1000E
NOTE: Air inlet and outlet must be free and uncovered to ensure a save and
good functionality.
Air inlet
Air outlet
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6. Setup and operation
Warning: Setup, Handling, Service must be done by a qualified person!
Qualified persons are specialists like electricians or persons with similar or
higher qualification.
6.1 Notes on installation and operation
The V1000E was carefully inspected and subjected to a functional check before delivery. The
high-quality packaging is designed to prevent damage in transit. Even with the most careful
handling, damage cannot be completely avoided. Possible transport damage particularly affects
the UVC tubes made of quartz glass. Examine the UVC tubes and lamp sockets before
installation. Check that the cables are not damaged. Check the completeness of the delivery
using the parts list.
Attention: The device shall only be installed with an intact cable. Check cables
and connectors before installation
The V1000E weights around 29kg. Any handling of the devices must be carried out
by at least two people. Additional people may have to be included in the installation
process.
The installation location must be chosen so that people present are not permanently closer than
0.5 m to the device.
Attention: People who are permanently in the proximity of the device should
keep a distance of 0.5m to the device.
The V1000E as well as the light traps must be checked for intactness before installation and
regularly during operation in order to detect increased emittance of UVC light. The risk from
possible emitting UVC radiation must be checked and documented using an appropriate
measuring device (see chapter 4.2 UVC Safe handheld measurement device).
Attention: Check the V1000E for intactness before assembly and regularly
during operation. The risk from possible UVC radiation must be checked and
documented using a UVC measuring device.
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6.2 Positioning and dimensioning
The correct dimensioning and positioning of the air sanitizer V1000E is essential for the success
of the sterilization process. Your advisor / dealer will be happy to assist you. Depending on the
intended use, the air delivery rate can be varied between 1000 m³/h and 500 m³/h using a
selector switch (see chapter 6.5 Operation). The volume as well as the UVC dose and thus a
reduction rate change accordingly.
1000m³/h 6,5 mJ/cm²
500m³/h 12,5 mJ/cm²
The V1000E air sanitizer has to be installed in such a way that the air outlet points towards the
main part of the room. For multiple air sanitizer these should be uniformly distributed in the
room. Inlets and outlets should always be free of obstacles within a radius of at least 1m to
ensure good function.
Attention: Correct and efficient positioning needs to be considered and
evaluated in each individual case.
During installation, it should be ensured that the air sanitizer are easily accessible later (e.g. with
aids such as a ladder) and can be cleaned. Furthermore, the accessibility of the switch should
be considered when choosing the installation location. If the switch cannot be reached, it is
advisable to switch the device using an alternative option (e.g. a classic wall switch).
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6.3 Mechanical setup
The V1000E is designed to be installed by using the built-in M8 threads (max. depth of thread
18mm). There are two of those M8 threads on the upper and on the lower side of the device.
Figure 3 Top view M8 threads for installation (marked in red)
Figure 4 Bottom view M8 threads for installation (marked in red)
WARNING: Make sure to use correct mounting material to fix the mounting
bracket to a wall or ceiling. Also make sure the supporting structure (wall,
ceiling) is capable of carrying the overall weight
WARNING: Always use at least two of these threads for horizontal mounting.
When mounted vertically, use all four threads.
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Figure 5 Don't use threads of tension ring
WARNING: Do not use the threads of the tension ring to hang or secure
the V1000E.
Please consult local laws and regulations regarding hanging and mounting of devices.
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6.4 Electrical setup
WARNING: Electrical work shall only be done by a fully qualified and trained
electrician. Follow the local laws and regulations.
WARNING: Make sure the power cable is disconnected from mains power
while connecting it to the device
WARNING: The light traps, clamping rings and cover (
Figure 9) rings must always be mounted when the device is turned on, it
additionally protects against the UVC light rest radiation that escapes out of
the housing.
WARNING: This product is a device of protection class 1 and require a
protective earth grounding and may only be connected to circuits that are
protected by a Residual Current Device (RCD). Therefore, always connect the
corresponding PE (Protection Earth) cable.
Connect the included power cable (power cable CEE-7/7 to powerCON TRUE1) to the plug on
the device (powerCON TRUE1) (Figure 6).
Connect the network cable to the device and your computer/network, if desired (Figure 7, No.2).
Connect the power cable to the power connection.
Figure 6 Power cable and power connection on the device
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6.5 Operation
Note: If the switch on the device cannot be reached due to the mounting position of
the device, it is advisable to switch the device using an alternative option (e.g. a
classic wall switch).
6.5.1 Operation with multifunctional switch
Note: If the power cable is connected to the power line the V1000E will directly start at
75% fan speed.
Figure 7 Connectors and multifunctional power button
•If the V1000E is running at 75% fan speed, the indicator ring at the multifunctional power
button (Figure 7, No.3) is blinking in green colour.
•Push the button, the V1000E will go to 50% fan speed. The indicator ring will start to
blink slowly in red, till the control unit detects the right fan speed (measurement interval
approx. 10-20sec.).
•If the correct fan speed is detected the indicator will switch to green light still blinking
slowly.
•Push the button again the V1000E will go to 100% fan speed. The indicator will turn to
continuously red light till the control unit detects the right fan speed.
•If the right fan speed is detected, the indicator will turn to continuously green light.
•Push the button again and the V1000E will go back to 75% fan speed and so on.
•To switch off the V1000E push the multifunctional power button for 5-7 seconds. The
V1000E switches off and the indicator light turns off.
Note: If a lamp error is detected, the V1000E will indicate this by the fact that the
button light will always be in red colour.
Note: If a fan error is detected, the V1000E will also show red light on the power button
and switch off automatically after approx. 60seconds. Please contact your vendor.
2
1
3
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Indicator light
Function
Off
Device off
continuously green
Device on, 100% fan speed, system ok
blinking green
Device on, 75% fan speed, system ok
blinking slowly green
Device on, 50% fan speed, system ok
constant red (max. 20sec.)
Device 100% fan speed, fan speed is measured, system ok
blinking red (max. 20sec.)
Device 75% fan speed, fan speed is measured, system ok
blinking slowly red (max. 20sec.)
Device 50% fan speed, fan speed is measured, system ok
continuously red all the time
Device 100% fan speed, failure in system, one or more lamps are not running
blinking red all the time
Device 75% fan speed, failure in system, one or more lamps are not running
blinking slowly red all the time
Device 50% fan speed, failure in system, one or more lamps are not running
Blinking or constant red and then
turns off
Fan error, device will switch off
Table 1 Indicator lights and function
Note: The network setting can be reset to default values by pressing the multifunctional
switch for approx. 20 seconds.
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6.5.2 Operating via network
The communication is set up via TCP/IP connection. Each device has a static IP address. The
default IP Address is:
192.168.000.010
Communication port is HTTP port 80.
The command and the reply from the device are formatted as JSON object.
Command
Param
Answer
Value
Note
state
none
statePower [value]
stateTubes[value]
stateFans [value]
fanspeedPct[value]
tubesHours[value]
alarmTubes [value]
alarmFans [value]
fanspeedRpm[value]
currentTubes[value]
serial[value]
fw[value]
“1” or “0”
“1” or “0”
“1” or “0”
“50” to “100”
0.0 to …
“1” or “0”
“1” or “0”
0 to …
0 to …
SerNr
0.0 to …
Power on or off
UVC tubes on or off
Fans on or off
Fan speed in percentage
UVC tubes operating time
UVC tubes alarm
Fan alarm
Fan speed in rpm
Tube current as relative value
Serial Number as string
Firmware
setFanSpeed
[param]
[50] to [100]
fanspeedPct [value]
“50” to “100”
Setting the fan speed in
percentage
setPower
[param]
[1] or [0]
statePower [value]
“1” or “0”
Setting power on or off
setIP [param]
[new IP
Address]
Status message
[value]
“Trying to
change IP
address”
IP address formatted as:
AAA.BBB.CCC.DDD
Example: 192.168.000.010
Table 2 Description of API
tubesHours: Operating hours are counted in 15-minute steps.
Decimal places are part of an hour, not minutes.
Example: An answer from the device of 5.75 is equal to an operation time of 5h45m.
Note: The network setting can be reset to default values by pressing the
multifunctional switch for approx. 20 seconds.
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A direct communication via Webbrowser can be setup with the following syntax:
[IP Address]/command/param
Example A: 192.168.000.010/setFanSpeed/50
Reply:
{
"fanspeedPct": 50
}
Example B: 192.168.000.010/state
Reply:
{
"power": 1,
"stateTubes": 1,
"stateFans": 1,
"fanspeedPct": 50,
"tubesHours": 1.50,
"alarmTubes": 0,
"alarmFans": 0,
"fansspeedRpm": 0,
"currentTubes": 0,
"serial": „ASZV1E.014.aa“,
"fw": 1.0
}
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6.6 Periodic maintenance work
After professional setup and positioning, no further work is initially necessary.
Check the correct function of the UVC tubes by checking the air inlet or air outlet to
see if blue light can be seen. In addition to UVC light, the UVC tubes also emit light in
the visible, blue range.
Check that the fans are working correctly by checking whether the fans are turning
and whether you can feel a flow of air.
A regular visual inspection of the quartz tube and the reflectors for dust and deposits
should be carried out. The right time depends on the air purity. If you are installing in a
new location, check more frequently (2-3 months) to get a feeling for the intervals.
Impurities and other deposits on the cladding tube or the reflector reduce the UVC
output considerably. Furthermore, the irradiation chamber, the light trap and the fan
should be cleaned of dust and other contamination. A blockage of the air flow has a
negative effect on the sterilization performance. After 12,000 hours of operation, the
tubes have reached approx. 75% of their output power. The tube replacement is
necessary (see chapter
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