NATDIS ND Air 4820 Service manual

ND Air 4820/9020
Mounting and operating instructions

Index
1. Revision summary ............................................................................................................................................................................... 3
2. Hazard markings and safety signs ....................................................................................................................................................... 3
3. Equipment information......................................................................................................................................................................... 4
3.1 Equipment purpose....................................................................................................................................................................... 4
3.2 Definition of UVC-disinfection ....................................................................................................................................................... 4
3.4 About the documentation .............................................................................................................................................................. 4
3.5 Declaration of conformity .............................................................................................................................................................. 5
4. Equipment overview ............................................................................................................................................................................ 6
4.1 Environment for the equipment ..................................................................................................................................................... 6
4.1.1 Surface ................................................................................................................................................................................. 6
4.1.2. Placement............................................................................................................................................................................ 6
4.1.3 Temperature and humidity .................................................................................................................................................... 6
4.1.4. Storage and environment ..................................................................................................................................................... 6
4.1.5. Requirement before use....................................................................................................................................................... 6
4.1.6 Disposal of parts ................................................................................................................................................................... 6
4.2. Mounting instructions ................................................................................................................................................................... 6
4.2.1 Mounting on ceiling or wall .................................................................................................................................................... 7
4.2.2 Turn off the UV device .......................................................................................................................................................... 7
5. Safety in and around UV equipment .................................................................................................................................................... 8
5.1 UVC physical: ............................................................................................................................................................................... 8
5.2 About the risk using UVC.............................................................................................................................................................. 8
5.3 UVC damages .............................................................................................................................................................................. 9
5.3.1 One-time injuries:.................................................................................................................................................................. 9
5.3.2 Repeated daily dose overruns:.............................................................................................................................................. 9
5.4 Environment: ................................................................................................................................................................................ 9
5.4.1 Staff: ..................................................................................................................................................................................... 9
5.4.2 Installation:............................................................................................................................................................................ 9
5.4.3. Access to area: .................................................................................................................................................................. 10
5.5 Safety: ........................................................................................................................................................................................ 10
5.5.1 Active safety: ...................................................................................................................................................................... 10
5.5.2 Passive safety:.................................................................................................................................................................... 10
5.5.3 Disposal.............................................................................................................................................................................. 10
6. Service and maintenance .................................................................................................................................................................. 11
6.1 Bulb change:............................................................................................................................................................................... 11
6.2. Change of quartz glass: ............................................................................................................................................................. 11
7. Cleaning of UVC-Systems ................................................................................................................................................................. 12
7.1 Purpose ...................................................................................................................................................................................... 12
7.2. Precautions ............................................................................................................................................................................... 12
7.3. Dry cleaning............................................................................................................................................................................... 13
7.3.1 Cleaning frequency ............................................................................................................................................................. 13
7.3.2 Detergents .......................................................................................................................................................................... 13
7.4. Cleaning procedure and inspection............................................................................................................................................ 13
8. Liability and Warranty ........................................................................................................................................................................ 14

1. Revision summary
Revision
Date
Comments/Changes
1.0
15-03-2021
Document created
2. Hazard markings and safety signs
The following hazard markings are used on the equipment and have the following meaning:
Danger
Electric current
Attention:
Access only for authorized personnel
Danger of non-coherent radiation
In this case UV light
Attention:
Protect eyes and skin against UVC light.

3. Equipment information
3.1 Equipment purpose
The UV equipment is constructed to treat all light-accessible surfaces in the selected area in a chosen
timeframe and area.
3.2 Definition of UVC-disinfection:
UVC unit is dimensioned to deliver a dose of (as per by agreement) J / m2 on all light-accessible surfaces
after a full cycle of the time (by agreement).
The effect of UVC is calculated on the surfaces where the light can reach. I.e. the places where the
light can reach directly. This means that shadow areas or areas where there can be no direct light or
areas that can only be reached by reflection, will not be considered as treated areas.
Areas completely or partially covered by other material (eg dust), will only the available surface be treated
and not the back of the particle, nor the material or particles that may be hidden by other
particles, and not inside particles / dirt etc.
A high efficiency of UV treatment is based on the fact that the surfaces are not contaminated with particles.
3.3. Function of UVC-installations:
•UV-installations are controlled by an on / off switch
•Prerequisite for starting the installation is;
oIf delivered with door contact:
Access doors are closed (door contact is closed)
•UVC-lamps are switched on for the agreed time
oIf delivered with a timer:
Time is set on the timer
•UVC-lamps are switched off if:
oThe door contact is disconnected
oThe on / off contact is switched off
•Restarting of the system
oPrerequisite for switching on must be present
oThe timer starts again
When observing faults: switch off main switch (switch off system) and consult service manual.
3.4 About the documentation
This manual has been made as a basis for the CE marking and is completed in accordance with Directive
2006/42 / EC of the European Parliament and of the Council of 17 May 2006.
The folder contains important information about the installation, including service manual and safety
instructions.
It is recommended to keep the folder visible and close to, the machine and inform your staff about it.

3.5 Declaration of conformity
We declare hereby that the equipment, as described below, in its design and construction complies with the
health and safety requirements specified in the EU Machinery Directive 2006/42 / EC. In the event of a
change of the equipment, this statement will lose its validity.
Producer: NATDIS ApS
Brunbjerg 70
6100 Haderslev
Description of the installation: UVC-Units for air and surface
Type ND Air 4820 & ND Air 9020
Art. No.: N10NDAIR482000 & N10NDAIR902000
CE number.: see CE-label on the equipment.
The following standards have been used as a guide in the overall risk assessment.
-EN 614-1:2006+A1:2009 Safety of machinery – Ergonomic design principles – Part 1: Terminology
and general principles.
-DS/EN 60204-1:2018 Machine safety - Electrical equipment on machines - Part 1: General
requirements
-EN ISO 12100: 2010 Machine safety - General principles of construction - Risk assessment and risk
reduction
-EN ISO 13857: 2008 Machine safety - Safety distances to prevent hands, arms, legs and feet from
entering danger areas
-DS/EN ISO 13849: 2015 Machine safety - Safety related parts of control systems - Part 1: General
principles of construction
-DS/EN 619 + A1:2010 Continuous transport equipment and systems - Safety and EMC requirements
for equipment for mechanical transport of general cargo
Meets the following EU guidelines:
EU- Machinery Directive 2006/42/EC
EU-Low voltage directive 2006/95/EF
EMC-guidelines 2014/30/EU
Haderslev 02/2021
Pernille Snitkjær, CEO, NATDIS ApS, Brunbjerg 70, 6100 Haderslev

4. Equipment overview
The UV unit contains of:
ND Air 4820 / 9020 for surface and air disinfection.
4.1 Environment for the equipment
4.1.1 Surface
The installation must be placed on a flat surface without inclination and fastened according to the
instructions.
4.1.2. Placement
The equipment may only be used in places where the surface is level and can be securely fastened.
4.1.3 Temperature and humidity
The equipment can be used in temperatures between 10-40°C and max. 60% humidity as standard.
4.1.4. Storage and environment
The equipment is not designed for outdoor use or storage.
If the equipment comes into contact with saline or acidic moisture or liquid, this should be removed from the
system as soon as possible to prevent corrosion.
4.1.5. Requirement before use
The equipment should be used as a disinfection solution with the purchaser:
• The equipment must not be used until the system has been completely erected and installed in
accordance with the regulations.
• The equipment may only be operated by personnel who have been properly instructed in its use.
• Repairs, service, and maintenance may only be carried out by qualified persons with proper training.
• If constructive changes are made to the equipment, the CE marking will lapse.
4.1.6 Disposal of parts
Consumables must be disposed of in accordance with current legislation.
•UVC-lamps contain mercury and must be disposed of in accordance with current regulations for
lamps containing mercury.
4.2. Mounting instructions
Installation of UV systems must be done according to specifications or further agreement.
The UVC light is outside the visible spectrum and therefore bulbs should be replaced according to the
following instructions.
•
Installations with light 24/7 in normal temperature
ranges
Change after 14 months of
continuous operation
•
Installations with light 24/7 in temperatures >40C or
<10C
Change after 12 months of
continuous operation
• Installations with frequent switch on and off Max. 3000 on/off
• Installations with other type of use Max. 2 years from delivery date
Avoid short-term (<5 min.) Switching on / off of bulbs. It has a strong degenerative effect on the life of
the bulbs and is not covered by the warranty obligation.

4.2.1 Mounting on ceiling or wall
Loosen the 6 screws on the side of the unit. The unit is disassembled. See also drawing in attachment.
Power cable should be connected in to the power supply.
The back plate is to be mounted on the ceiling or wall.
The unit is assembled with the 6 screws on the side.
Conncet power cable from outlet or socket.
To ensure the unit against against the moisture from surroundings, please seal the unit with silicone
after installation.
Avoid touching the quartz glass and the bulb with bare hands, use clean glowes to prevent grease
stains, which will burn into the glass.
The glass can be cleaned with alcohol-based cleaner.
Make sure there are no people within range of the UV light during and after ignition. Make sure there
are glass, walls or doors between the UV light and people.
4.2.2 Turn off the UV device
The UV is active in the pre-programmed time (if delivered with timer) and switches off at the end of
the cycle.
If you want to switch off the UV system before expiration, disconnect from the electrical plug or turn
off on the switch – Please note that personnel without safety gear should not be present during the
UVC cycle.

5. Safety in and around UV equipment
5.1 UVC physical:
UVC is shortwave radiation that loses its energy quickly in relation to distance from the source. The type of
source for UVC used here loses its energy in relation to distance (meters). UVC is effectively stopped by
transparent materials such as ordinary glass, plexiglass, plastic, most kind of clothing. Opaque materials
usually block UVC.
Risk factors assessed:
•People in rooms, while UVC light is operating
•Access to rooms, when UVC light is operating
Dosage:
UV systems work with a treatment dose of: (see guide in section 3.4.) xx J / m2 per treatment (on light-
accessible surfaces).
The table below taken from "A Non-binding guide to the Artificial Optical Radiation Directive 2006/25 / EC"
indicates the recommended maximum dose for "NON COHERT" radiation per day.
5.2 About the risk using UVC:
When using normal work clothes with full cover of skin and safety glasses, the risk of permanent damage
from short-term exposure to UVC light is limited to the effect on the skin and the minimal risk of damage to
the eyes.
In connection with the use of UVC systems, warning signs should be placed warning about the use of UVC.
Systems may only be switched on when the room is secured. I.e. it has been inspected and found empty.

People at and around UVC systems will therefore not be able to be surprised by exposure without knowing
this. (Hidden injuries).
When opening the door to the room, UVC light should be switched off.
Direct view to the UV equipment should be measured with UVC radiometer and assessed in the specific
cases.
5.3 UVC damages
Possible damage when exceeding the dosage of UVC light in accordance with current instructions, see
section 5.1 above
5.3.1 One-time injuries:
In case of minor exceedance, factor 4 -6
Risk of:
•Eyes, short-term irritation 24-48 hours (welding eyes)
•Skin, slight redness
In case of moderate exceedance, factor 6 -10
Risk of:
•Eyes, severe irritation 24-48 hours (severe cases of welding eyes, with short-term loss of vision)
•Skin, severe redness like light to medium sunburn.
In case of severe exceedance factor +10
Risk of:
•Eyes, permanent damage, impaired vision
•Skin, Severe sunburn; 2nd degree combustion.
5.3.2 Repeated daily dose overruns:
•Eyes, permanent damage, impaired vision
•Skin, development of various types of skin cancer (presumed, not detected)
In the situation in question, it has been included in the assessment that this is a production area with the use
of full clothing in the work area.
5.4 Environment:
5.4.1 Staff:
The UVC-lamps are installed in a professional work environment where instructions are part of everyday life
and where unauthorized personnel should not have access to turn on the UVC light.
5.4.2 Installation:
The UVC lamps are installed in closed rooms, doors should be secured with locks or similar.
The on/off switch is model that can be locked in secure position with a padlock, during service work or
similar.

5.4.3. Access to area:
Access to UV lamps must be via access doors. Personnel must be instructed in the function and procedure
of the UVC system.
All work in rooms, in addition to normal operation, requires that the on button is locked before work begins.
5.5 Safety:
The following safety systems may be installed in connection with UVC systems:
5.5.1 Active safety:
•Door switches on access ways
5.5.2 Passive safety:
• Sign’s warning of the use of "Non-Coherent Optical Radiation" (in this case UVC LIGHT)
oIn and around the room.
• Instructions for personnel using the system
5.5.3 Disposal
• Before dismantling the installation, a plan for disassembly must be prepared.
• The plan must include a risk assessment for the work as well as for disposal of installation
and the spare parts.
• Plan and risk assessment must be prepared in accordance with current rules at the time of dismantling.
Scrapping
• The system is dismantled and sorted into categories as required by applicable environmental
requirements.
• The installation is subject to Directive 2008/98 / EC and Directive 2002/96 / EC on waste.
• When the system is obsolete, all existing components must be sorted and handed in at an
approved recycling site, or at an approved recycling company.
• The system must not be disposed of with unsorted household waste. Use the local collection
points for the disposal of electrical and electronic components and ensure that all relevant
regulations are observed.
The system consists of the following parts and must be sorted accordingly:
-Iron.
-Aluminum
-Plastic. (hard and soft)
-Rubber.
-Electrical components.
-Elektronics
-copper
-Other metals.
• If parts of the systems are resold for purposes other than disposal, it is the owner's responsibility
to make the recipient aware of the disposal rules.