FläktGroup Multi-DENCO User manual

Multi -DENCO
®
OPERATION MANUAL

Table of Contents Multi-DENCO
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1 Overview of Units and Scope of Supply ................................. 13
1.1 Introduction .............................................................................................. 13
1.2 Model number explained .......................................................................... 13
1.3 Product series overview ........................................................................... 14
1.4 DENCO-OfficeCool .................................................................................. 15
1.5 Scope of supply ....................................................................................... 15
1.6 Accessories and special equipment ......................................................... 15
1.7 Directives and regulations ........................................................................ 15
1.8 References within manual ........................................................................ 16
2 Safety and User Information .................................................... 17
2.1 Availability of the operation manual ......................................................... 17
2.2 Scope of the operation manual ................................................................ 17
2.3 Document format ..................................................................................... 18
2.4 Signs used within this manual .................................................................. 19
2.5 Labelling of safety information ................................................................. 21
2.6 Safety-conscious working ........................................................................ 23
2.7 Proper use ............................................................................................... 25
2.8 Modifications and changes ...................................................................... 25
2.9 Spare parts .............................................................................................. 25
2.10 Disposal ................................................................................................... 26
2.11 Personnel selection and qualification ....................................................... 26
2.12 Noise ........................................................................................................ 26
2.13 Environmental considerations .................................................................. 26
3 Technical Description ............................................................... 27
3.1 Unit description ........................................................................................ 27
3.2 Operating limits ........................................................................................ 28
3.3 Operating modes ..................................................................................... 28
3.4 Operating strategies ................................................................................. 29
3.5 Components ............................................................................................. 31
3.6 Heat rejection systems ............................................................................. 33
4 Shipping and Storage ............................................................... 35
4.1 Delivery .................................................................................................... 35
4.2 Handling ................................................................................................... 35
4.3 Storage .................................................................................................... 36
5 Installation ................................................................................. 37
5.1 Requirements and considerations ........................................................... 37
5.2 Substructures ........................................................................................... 39
5.3 Unit placement ......................................................................................... 41
5.4 Clearance and Access ............................................................................. 42
5.5 Installing enclosed accessories ............................................................... 44
5.6 Installation of outdoor units ...................................................................... 47
5.7 Fan touch protection ................................................................................ 50
5.8 EC Declaration of Conformity .................................................................. 50
6 Medium Connections ................................................................ 52
6.1 Requirements ........................................................................................... 52
6.2 Connecting refrigeration pipework ........................................................... 52
6.3 Refrigerant pipework testing procedures ................................................. 60
6.4 Humidifier water connections (optional) ................................................... 62
6.5 Connecting condensate drain .................................................................. 64

Multi-DENCO Table of Contents
FläktGroup DC-2013-0101-GB • Subject to modifications • R4-05/2018 3
6.6 Connecting water pipework ...................................................................... 65
7 Electrical Connections ............................................................. 70
7.1 Requirements ........................................................................................... 70
7.2 Connecting mains power supply ............................................................... 71
7.3 Connecting outdoor unit ............................................................................ 72
7.4 Connecting signal cabling ......................................................................... 74
7.5 Customer terminals on C5-12 unit controller ............................................ 76
8 Commissioning ......................................................................... 77
8.1 Requirements ........................................................................................... 77
8.2 Pre-commissioning procedure .................................................................. 78
8.3 Commissioning procedure ........................................................................ 83
8.4 Post-commissioning procedure ................................................................ 93
9 Operation ................................................................................... 94
9.1 Requirements ........................................................................................... 94
9.2 General operation ..................................................................................... 94
9.3 Alarms and error messages ...................................................................... 96
10 Servicing and Maintenance ...................................................... 97
10.1 Maintenance access ................................................................................. 98
10.2 Servicing ................................................................................................... 98
10.3 Refrigerant leak testing ........................................................................... 100
10.4 Compressor care .................................................................................... 100
10.5 Humidifier maintenance (if fitted) ............................................................ 100
10.6 Closing down procedure ......................................................................... 101
10.7 Logbook & EU Regulation ...................................................................... 102
11 Fault Finding and Troubleshooting ....................................... 103
11.1 Common Issues ...................................................................................... 104
12 Dismantling and Disposal ...................................................... 106
12.1 Dismantling ............................................................................................. 106
12.2 Disposal .................................................................................................. 107
13 Appendix .................................................................................. 108
13.1 Pre-Commissioning Checklist (DQA 880) ............................................... 109
13.2 Pressure Test Certificate (DQA 653) ...................................................... 112
13.3 Multi-DENCO Commissioning Report (DQA 890) .................................. 113
PROTECTION NOTICES
The reproduction, distribution and utilization of this document as well as the communication of its contents to others without
express authorization is prohibited. Offenders will be held liable for the payment of damages. All rights reserved in the
event of the grant of a patent, utility model or design.

Multi-DENCO
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The following pages demonstrate the possible type code and options for a
Multi-DENCO unit. The DENCO OfficeCool short type code is listed on page 12.
Please note that thetype code is subject to updates and addition due to our continuous
improvement process, therefore for the latest options available please contact your
local office.
*Not available for X-Version
Basic Unit
Product Range Cooling system Unit size Air flow direction Panel configuration Heat exchanger Compressor control Humidifier Filter Fan Heating Power supply
DDENCO
MMulti-DENCO
AAir cooled
CChilled Water
XSplit System
010 Size 010
018 Size 018
030 Size 030
045 Size 045
065 Size 065*
092 Size 092*
130 Size 130*
DDownflow
UUpflow
PFront full height panel
FFront air inlet grille panel
LFront low level air discharge panel
SStandard heat exchanger
CCombiCool
LLarge heat exchanger
IInverter compressor scroll
FFixed speed compressor scroll
NNot fitted
SSteam humidifier standard conductivity
LSteam humidifier low conductivity
HSteam humidifier high conductivity
NNot fitted
4Filter G4
7Filter F7
PEC plug fan
EElectric heating
TModulating electric heating
NNot fitted
RRemote signal 0-10 V
13~ 400 V, N, PE, 50 Hz
73~ 400 V, N, PE, 60 Hz

Multi-DENCO
FläktGroup DC-2013-0101-GB • Subject to modifications • R4-05/2018 5
Refrigeration
Product Range Key Refrigeration Refrigerant Refrigerant circuit arrangement Compressor size Plate heat exchanger Expansion valve Liquid receiver Shut off valve refrigerant Connection type refrigeration Refrigerant leakage detection Compressor soft start Service connections
DDENCO
MMulti-DENCO
RE Refrigeration
DR410A
1Single circuit
NSmall compressor
CStandard compressor
NNot fitted
EElectronic expansion valve
NNot fitted
SShut off valves compressor and liquid line
LShut off valve liquid line
SSolder connections
TTwin solder connections
LRefrigerant leakage detection
NNot fitted
NNot fitted
CCommissioning front connection points
NNot fitted

Multi-DENCO
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Water
Product Range Key Water Shut off valve water Connection type water Water temperature monitoring Valve type Valve actuator Valve kv
DDenco
MMulti-DENCO
WA Water
SShut off valves chilled water
NNot fitted
BThreaded pipework connections (BSPT)
GFlange pipework connections PN06
FFlange pipework connections PN16
SSolder connections
NNot fitted
TTemperature monitoring probes
NNot fitted
22-way water valve
P2-way water valve, pressure independent
33-way water valve with bypass
B3-way water valve with bypass & regulating valve
NNot fitted
DDODC actuator
00-10 V actuator, drive open, spring return
NNot fitted
Ckv = 1.0
Dkv = 1.6
Ekv = 2.5
Fkv = 4.0
Gkv = 6.3
Hkv = 10
Ikv = 16
Jkv = 25
Kkv = 40
Lkv = 63
Mkv = 100
XSmall
YStandard
NNot fitted

Multi-DENCO
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CombiCool
Product Range Key CombiCool Shut off valve water Connection type water Water temperature monitoring Valve type Valve actuator Valve kv
DDenco
MMulti-DENCO
CC CombiCool
SShut off valves chilled water
NNot fitted
BBSP pipework connections
GFlange pipework connections PN06
FFlange pipework connections PN16
SSolder connections
NNot fitted
TTemperature monitoring probes
NNot fitted
22-way water valve
P2-way water valve, pressure independent
33-way water valve
B3-way water valve with bypass & regulating valve
NNot fitted
DDODC actuator
00-10 V actuator, drive open, spring return
NNot fitted
Ckv = 1.0
Dkv = 1.6
Ekv = 2.5
Fkv = 4.0
Gkv = 6.3
Hkv = 10
Ikv = 16
Jkv = 25
Kkv = 40
Lkv = 63
Mkv = 100
XSmall
YStandard
NNot fitted

Multi-DENCO
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Controls
Product Range Key Controls Controls Interface BMS Display Run status Water detection Air sensor Language Fan speed control indoor Air volume flow monitoring Energy monitoring Pump signal Ambient tempe- rature control Main switch Smoke detection Accessories power supply DENCO-Office- Cool Uninterrupted power supply
DDENCO
MMulti-DENCO
CO Controls
CC5-12 controller
NNot fitted
LLonWorks interface
BBACnet MS/TP interface
EBACnet I/P, SNMP, Webpage interface
NNot fitted
TTouch screen display
NNot fitted
RRun status unit
NNot fitted
WWater detection, sensor tape and drain pan sensor
1Water detection, 1 spot sensor and drain pan sensor
2Water detection, 2 spot sensors and drain pan sensor
4Water detection, 4 spot sensors and drain pan sensor
6Water detection, 6 spot sensors and drain pan sensor
NNot fitted
1Return Air T&H sensor
2Return Air T&H sensor, 10 m cable
7Return Air T&H + Supply Air Temp sensors
8Return Air T&H + Supply Air T&H sensors, 10 m cable
9Return Air T&H + Supply Air Temp sensors, 10 m cable
AReturn Air T&H, 10 m cable + Supply Air Temp sensors
BReturn Air T&H, 10 m cable + Supply Air T&H sensors, 10 m cable
NNot fitted
SStandard languages
OOther language (special)
NNot fitted
PFloor void air pressure control (APS)
SFan speed control cooling demand
NNot fitted
VAir volume flow monitoring
NNot fitted
EEnergy monitoring
NNot fitted
SPump signal CombiCool free-cooling
NNot fitted
AAmbient temperature control CombiCool free-cooling
NNot fitted
MMain switch
DDual power supply (ATS), inbuilt
SSmoke detection
NNot fitted
PCondensate pump
TTrend BMS interface
1Condensate pump and Trend BMS interface
LLECU Interface
NNot fitted
UUninterrupted power supply controls
NNot fitted

Multi-DENCO
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Casing
Product Range Key Casing Connection position Display position Unit colour Filter gauge Air grille unit top Panel Installation wheels Packaging
DDENCO
MMulti-DENCO
CA Casing
BPipework bottom entry
SStandard display position
LLower display position
NNot fitted
RWhite
OOther unit colour (special)
GFilter differential pressure gauge
NNot fitted
1Top air discharge protection grille (Eyelash)
2Top air inlet protection grille (Eggcrate)
DAir damper
PPrepared for loose air damper
NNot fitted
SStandard panels
AAcoustic insulation panels
NNot fitted
SStandard packaging (Domestic)
EWooden crate packaging (Export)
PStandard packaging (Domestic) with unit protection sheet
FWooden crate packaging (Export) with unit protections sheets

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Outdoor Unit *
Product Range Key Outdoor unit Outdoor system Coolant Unit size Fan Refrigerant cir- cuit arrangement Compressor size Power supply Winter kit Heat exchanger coating Compressor soft start Unit colour Packaging Airflow direction Number of outdoor units Deliver external unit Liquid receiver Liquid receiver size
DDENCO
MMulti-DENCO
OU Outdoor unit
CCondenser
DR410A
008 008
013 013
021 021
026 026
032 032
050 050
075 075
100 100
EEC fan
AAC fan with fan speed controller
FAC fan
1Single circuit
NNot fitted
13~ 400 V, N, PE, 50 Hz
21~230 V, N, PE, 60 Hz
31~265 V, N, PE, 60 Hz
51~230 V, N, PE, 50 Hz
63~460 V, N, PE, 60 Hz
73~ 400 V, N, PE, 60 Hz
WWinter kit, -40 °C ambient
DWinter kit with double pressure relief valve, -40°C ambient
NNot fitted
BBlygold heat exchanger coating
EEpoxy heat exchanger coating
NNot fitted
NNot fitted
RAluzinc
OOther unit colour (special)
SStandard packaging (Domestic)
EWooden crate packaging (Ex-
port)
HHorizontal airflow
VVertical airflow
11 outdoor unit
22 outdoor units
OExternal unit is included in package
NDeliver without external unit
PLiquid receiver with pressure relief valve
DLiquid receiver with double pressure relief valve
BLiquid receiver with pressure relief valve and pump-down
CLiquid receiver with double pressure relief valve and pump-down
NNot fitted
17L
212L
315L
418L
521L
625L
730L
836L
A50L
NNot fitted
* A-Version, X-Version and H-Version

Multi-DENCO
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Accessories
Product Range Key Ac- cessories Unit size (indoor) Accessory
DDENCO
MMulti-DENCO
AC Accessories
010 Size 010
018 Size 018
030 Size 030
045 Size 045
065 Size 065
092 Size 092
130 Size 130
BAS Base stand
PLI Plinth
PLIO Plinth, other colour (special)
TIL Raised floor tile support
PUM Condensate pump
PUH Condensate pump at humidifier
DAM Shut off damper
DAMC Shut off damper
TRA Underfloor unit drip tray
1WA Horizontal 1 way air discharge
1WAO Horizontal 1 way air discharge, other colour (special)
3WA Horizontal 3 way air discharge
3WAO Horizontal 3 way air discharge, other colour (special)
FI4 G4 Spare filter set
FI7 F7 Spare filter set
FI4C G4 Spare filter set
FI7C F7 Spare filter set
REM Remote monitoring touch screen display
TOU Touch up paint kit
D10 Ceiling connection duct 100 mm
D15 Ceiling connection duct 150 mm
D20 Ceiling connection duct 200 mm
D25 Ceiling connection duct 250 mm
D30 Ceiling connection duct 300 mm
D35 Ceiling connection duct 350 mm
D40 Ceiling connection duct 400 mm
D45 Ceiling connection duct 450 mm
D50 Ceiling connection duct 500 mm
D55 Ceiling connection duct 550 mm
D60 Ceiling connection duct 600 mm
D65 Ceiling connection duct 650 mm
D70 Ceiling connection duct 700 mm
D75 Ceiling connection duct 750 mm
D80 Ceiling connection duct 800 mm
D85 Ceiling connection duct 850 mm
D90 Ceiling connection duct 900 mm
D95 Ceiling connection duct 950 mm
D99 Ceiling connection duct 1000 mm
TRE Trend BMS interface
CEC Central Controller
PLV Plant Visor
TSD Top-side-down duct

Multi-DENCO
12 FläktGroup DC-2013-0101-GB • Subject to modifications • R4-05/2018
DENCO-OfficeCool
Product Range Cooling system Unit size Air routing Panel configuration Heat exchanger Compressor control Humidifier Filter Fan Heating Power supply
DDenco
MMulti-DENCO
OChilled water OfficeCool
HSplit System OfficeCool
010 Size 010
018 Size 018
030 Size 030
045 Size 045
DDownflow
UUpflow
PFront full height panel
SStandard heat exchanger
HHeat pump heat exchanger
NNot fitted
SSteam humidifier standard conductivity
LSteam humidifier low conductivity
HSteam humidifier high conductivity
NNot fitted
4Filter G4
7Filter F7
WFilter washable G4
PEC plug fan
NNot fitted
13~400 V, N, PE, 50 Hz
63~460 V, N, PE, 60 Hz

Multi-DENCO Overview of Units and Scope of Supply
FläktGroup DC-2013-0101-GB • Subject to modifications • R4-05/2018 13
1 Overview of Units and Scope of Supply
1.1 Introduction
We would like to thank you for purchasing our products.
Multi-DENCO units are intended and designed for indoor installation for cooling, hea-
ting, humidification, dehumidification and filtering of air at atmospheric pressure. The
units are designed as refrigeration systems and/or chilled water systems and it is prohi-
bited to use our units for any other purposes. The equipment has been designed and
manufactured within a 'Quality Assurance System' withina strict quality controlled env-
ironment to ensure that it reaches you in perfect condition.
For help, assistance, spares or your local office, please visit the following website for
contact details in your region:
https://www.flaktgroup.com/en/contact-us/
1.2 Model number explained
Each product carries an 'Identification Plate' (sometimes referred to as 'serial plate')
inside the equipment for indoor units. For outdoor units, this maybe be on the external
casing. This identification plate carries information that is important and unique to the
unit.
Upon receipt of your equipment it is important to check the 'MODEL NUMBER' (a shor-
tenedversioncalled 'ModelType Code'is shownonthe serialplate)prior topositioning
and installation, to ensure it matches your requirements. Any discrepancies should be
reported immediately to your representative.
Refer to page 4 for the type code of a particular unit. Below shows an example serial
plate for a Multi-DENCO A-Version unit.
PRODUCT RANGE / PROJECT TYPE Multi-DENCO® STANDARD
MODEL TYPE CODE / PED DMA030DPSIN4PN1 CAT. 1
SERIAL NUMBER
CONTRACT NO. / DATE OF BUILD 110196 02 / 2017
OPERATION MAN. / WIRING DIAGRAM PR-2013-0101 110196-101
VOLTAGE / PROTECTION RATING
400V-3PH-50HZ/60HZ+N
IP20
MAX. PRE-FUSE 32 TYPE D
FULL LOAD INPUT 11,4 kW
FULL LOAD CURRENT 29,9 A
COOLING MEDIUM
SOFTWARE VERSION
MWP HIGH PRESSURE SIDE 4,32 MPa
MWP LOW PRESSURE SIDE 4,32 MPa
CHILLED WATER 0,70 MPa
EMPTY WEIGHT 330,00 Kg
NOTE
6WC955
CV3.04.009B/DV4.06.009B
R410A (GWP 2088) & WATER
FIELD CHARGE (kg) CO2e
1015
FläktGroup Czech Republic a.s.
Slovanská 781, 463 12 Liberec XXV - Vesec, Czech Republic
ANY MODIFICATION MAY NOT BE REFLECTED ABOVE
=
( Field Charge (R410A) / 1000 ) x 2088 = CO
2
e
CONTAINS
GREENHOUSE
FLUORINATED
GASES

Overview of Units and Scope of Supply Multi-DENCO
14 FläktGroup DC-2013-0101-GB • Subject to modifications • R4-05/2018
1.3 Product series overview
There are 3 versions of the Multi-DENCO product: A-Version, C-Version and X-Ver-
sion. These versions have some common elements andalso individual characteristics.
Fig. 1-1: A Multi-DENCO Unit
Common features &
options – 7 standard box sizes (010, 018, 030, 045, 065, 092 and 130)
– Cooling capacities up to 150 kW
– Available with both upflow or downflow air paths
– Large EC plug fans
– Integrated or remote temperature and humidity sensors
– Large surface area for heat exchanger coil
– Available with full panel doors or with grilles within the doors
– Humidification and heating options available
– Standard control software and hardware that is compatible for all versions
– Building Management System (BMS) interface compatible
A-Version – Refrigeration based cooling
– R410A used as standard
– Inverter compressors as standard (fitted in indoor unit)
– Electronic expansion valve as standard (fitted in indoor unit)
– Typically supplied with an outdoor condenser
C-Version – Water based cooling
– Can operate with Glycol
– A method of heat rejection separate to Multi-DENCO unit (e.g. Chiller)
– Can be provided with 3-way, 2-way or 2-way PICV valves and a variety of actuators
X-Version – Refrigeration based cooling
– R410A used as standard
– Available for sizes 010 to 045
– Inverter compressors as standard (fitted in outdoor unit)
– Electronic expansion valve as standard (fitted in outdoor unit)
– Typically supplied with an outdoor condensing unit
CombiCool Coil (Optional) A and C-Version units can be upgraded to have inbuilt redundancy. A unit with a Com-
biCool coil, consists of a primary and a secondary circuit. The primary circuit will be a
chilled water cooling circuit. When parameters leave the allowable boundaries (e.g.
chilled water inlet temperatures are too high) then the primary circuit will stop and the
secondary circuit will be activated (e.g. the A-Version DX circuit) to continue the coo-
ling process. A CombiCool coil can also be used in a FreeCool strategy.

Multi-DENCO Overview of Units and Scope of Supply
FläktGroup DC-2013-0101-GB • Subject to modifications • R4-05/2018 15
1.4 DENCO-OfficeCool
DENCO-OfficeCool is a separate version of the Multi-DENCO design and custom-
made for use in an office environment or similar requiring comfort cooling. The units
consist of one Zone unit to many Local Environmental Control Units (LECUs) to give
temperature control through a raised floor.
Typically, DENCO-OfficeCool units are in downflow air configuration, but Upflow units
can be used with a 'top side down duct'. This can be referred to as 'Underfloor Air Con-
ditioning'.
O-Version – Water based cooling
– Can operate with Glycol
– A method of heat rejection separate to Multi-DENCO unit (e.g. Chiller)
– Can be provided with 3-way or 2-way valves and a variety of actuators
– Available for sizes 010 to 045
– Acoustic insulation and slower fan speeds
H-Version – R410A used as standard
– Available for sizes 010 to 045
– Inverter compressors as standard (fitted in outdoor unit)
– Acoustic insulation and slower fan speeds
– Heat pump options available
1.5 Scope of supply
A typical order of a Multi-DENCO unit could consist of (but is not limited to):
– Indoor unit of Multi-DENCO configuration with associated internal options pre-
installed (unless requiring placement external to the unit or further installation, in
which case, hardware is provided loose within the unit)
–Outdoor unit (Optional) a condenser, condensing unit or drycooler to act as a heat
rejection unit for the system
–Unit documentation
– A copy of the current operation manual (indoor and/or outdoor)
– Controller manual
– Wiring diagrams for both indoor and outdoor units
– Dimensional drawing
– Spare part list in the form of a label or a printed sheet
–Accessories (optional) Any other accessories that may be required for the indoor
or outdoor unit, for example; plinths, base stands, ceiling return sections etc. may
be provided in separate packaging
1.6 Accessories and special equipment
Multi-DENCO units can be designed with a vast number of accessories and features.
To determine the scope of options fitted to your unit, compare the supplied unit 'Model
Number' with the unit model number specified in the typecode.
1.7 Directives and regulations
We certify that products supplied within the range of Multi-DENCO conform to, meet
and/or exceed the requirements of the following directives and regulations:
– Directive on Machinery 2006/42/EC
– Low Voltage Directive 2014/35/EU
– Electromagnetic Compatibility (EMC) 2014/30/EU
– Pressure Equipment Directive 2014/68/EU

Overview of Units and Scope of Supply Multi-DENCO
16 FläktGroup DC-2013-0101-GB • Subject to modifications • R4-05/2018
1.8 References within manual
The following references to standards and regulations are made within this manual.
These may be updated or revised by the relevant bodies, after publication of this
manual. In all instances, review the latest versions for any relevant updates.
(EC) No. 842/2006
EN 378
DIN EN ISO 3745
2014/68/EU
2006/42/EC
2014/30/EU
2014/35/EU
EN 12735-1:2010
EN 60204-1:2006+A1:2012
(EU) No. 517/2014
2008/98/EC
2012/19/EU

Multi-DENCO Safety and User Information
FläktGroup DC-2013-0101-GB • Subject to modifications • R4-05/2018 17
2 Safety and User Information
The Multi-DENCO range is designed in accordance with state-of-the-art technological
and engineering standards as well as in conformity with the recognized safety regula-
tions.
It must be used in an appropriate manner for suitable purposes, following the details
contained within this manual and taking account of safety aspects and potential
hazards.
Failure to follow the instructions in this manual may result in danger to health and
safety, damage to materials and incorrect unit operation. Information within this
document advises on, but is not limited to, potential threats or concerns related to
health and safety. All users must be, or employ, a trained professional to, assess
issues relating to health and safety, before any handling the Multi-DENCO unit.
2.1 Availability of the operation manual
This operation manual contains important information regarding safe and correct ope-
ration of the unit.
This manual must always be available at the site where unit is operating. Every person
working on the equipment must read this manual fully before commencing the work
and take note of all relevant information while performing a task.
The operation manualis intended to be used by fitting and installation companies, buil-
ding services engineers, technical personnel or trained persons as well as electrical
and refrigeration engineering specialists.
2.2 Scope of the operation manual
THIS IS AN ORIGINAL OPERATION MANUAL VERIFIED BY THE MANUFACTURER.
Thisdocumenthas beendevelopedby the manufacturerspecifically fordetails relating
to the Multi-DENCO range. Information within this document may be common to other
designs or products, but the information contained is exclusive to Multi-DENCO and
non-transferable. The information should not be used as a basis for any other pro-
ducts.
Every effort is made to ensure that information contained within this manual is fair and
accurate, but FläktGroup endeavours to continuously update and improve all of our
products for our customers. Due to this continuous development, some information
contained within this manual may become outdated or no longer relevant. If you are in
any doubt regarding any information contained within this document, please contact
your local sales or support representative who will be happy to assist and enquire
further for you.

Safety and User Information Multi-DENCO
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This operation manual covers topics in the following areas:
– Safety and User Information
– Technical Descriptions
– Shipping and Storage
– Installation
– Mechanical and Electrical Connections
– Commissioning
– Operation
– Servicing and Maintenance
– Troubleshooting
– Disassembly
2.3 Document format
Significant information for each chapter will be highlighted in the following format:
– This symbol is used to indicate normal lists.
•This symbol indicates instructions to follow.
9The result of an action is indicated with this symbol.
NOTE!
Please refer to Controls Operation Manual for details about software and control
operation of your Multi-DENCO!
NOTE!
This manual is valid only for configurations built from our standard catalogue.
Any units designed or supplied under special configurations (sometimes referred to
as 'Engineering Specials'), may not be covered by previous, existing or future
documentation.
Please refer to your sales/support contact for any information regarding special
designs.
NOTE!
Here you will find additional details on using the Multi-DENCO unit.

Multi-DENCO Safety and User Information
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2.4 Signs used within this manual
2.4.1 Mandatory Signs
2.4.2 Prohibition Signs
General Mandatory Sign
Refer to manual or documentation
Wear ear protection
Wear eye protection
Wear safety footwear
Wear protective gloves
Wear protective clothing
Wear a protective mask
Guards must be used during operation
General prohibition sign
No smoking
No open flame, fire, open ignition source

Safety and User Information Multi-DENCO
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2.4.3 Warning Signs
General warning sign
Warning of low temperature
Warning of electricity
v
Warning of suspended loads
Warning of toxic substances
Warning of hot surfaces
Warning of automatic starting machinery
Warning of sharp elements
Warning of crushing to limbs
Possible damage to machinery
Environmental damage