EKOM DK50 4x4VRT/M User manual

DK50 4x4VRT/M
DK50 6x4VRT/M
User manual

COMPRESSOR
DK50 4x4VRT/M
DK50 6x4VRT/M
EKOM spol. s r. o.
Priemyselná 5031/18
SK-921 01 Piešťany
Slovak Republic
tel.: [phone]
fax: [phone]
www.ekom.sk
email: eko[email protected]
DATE OF LAST REVISION
03/2021
NP-DK50-Nx4VRTM-AD-A-
EN-4_03-2021
112000555-0001

CONTENTS..................................................................................................5

CONTENTS
03/2021 5 NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021
CONTENTS
GENERAL INFORMATION............................................................................................................6
1. CONFORMITY WITH THE REQUIREMENTS OF THE EUROPEAN UNION...................6
2. SYMBOLS........................................................................................................................6
3. DEVICE USE ...................................................................................................................7
4. GENERAL SAFETY INSTRUCTIONS..............................................................................8
5. STORAGE AND TRANSPORT CONDITIONS.................................................................9
PRODUCT DESCRIPTION ..........................................................................................................10
6. VARIANTS.....................................................................................................................10
7. ACCESSORIES.............................................................................................................12
8. PRODUCT FUNCTION..................................................................................................14
TECHNICAL DATA......................................................................................................................17
INSTALLATION...........................................................................................................................21
9. INSTALLATION CONDITIONS ......................................................................................21
10. COMPRESSOR ASSEMBLY.........................................................................................22
11. PNEUMATIC CONNECTION.........................................................................................25
12. ELECTRICAL CONNECTION........................................................................................28
13. COMMISSIONING .........................................................................................................34
14. PNEUMATIC DIAGRAMS..............................................................................................35
OPERATION................................................................................................................................38
15. SWITCHING ON THE COMPRESSOR..........................................................................39
16. SWITCHING OFF THE COMPRESSOR........................................................................47
PRODUCT MAINTENANCE ........................................................................................................48
17. PRODUCT MAINTENANCE...........................................................................................48
18. LONG-TERM SHUTDOWN............................................................................................64
19. DISPOSAL OF DEVICE.................................................................................................64
TROUBLESHOOTING.................................................................................................................65
20. REPAIR SERVICE.........................................................................................................67
ANNEX ........................................................................................................................................68
21. MAPPING PARAMETERS.............................................................................................68
22. INSTALLATION RECORD .............................................................................................70

GENERAL INFORMATION
NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021 6 03/2021
GENERAL INFORMATION
Carefully read this user manual before using the product and carefully store it for future reference.
The user manual aids in the proper use, including installation, operation and maintenance, of the
product.
The user manual corresponds to the configuration of the product and its compliance with applicable
safety and technical standards at the time of its printing. The manufacturer reserves all rights for the
protection of its configuration, processes and names.
The Slovak version represents the original version of the user manual. The translation of the user
manual is performed in accordance with the best available knowledge. The Slovak version is to be
used in the event of any uncertainties.
The user manual is original and the translation is performed with the best available knowledge.
1. CONFORMITY WITH THE REQUIREMENTS OF THE EUROPEAN UNION
This product conforms to the requirements of the European Union 2006/42/EC, 2014/29/EU,
2014/35/EU, 2014/30/EU, 2011/65/EU and is safe if used in compliance with the intended use and
if all safety instructions are followed.
User manual is in compliance with requirements of Directive 2006/42/EC.
2. SYMBOLS
The following symbols and marks are used in the User manual, on the device and its packaging:
General warning
Warning - risk of electric shock
Warning - compressor is controlled automatically
Warning - hot surface
General caution
Read the operating instructions
Refer to instruction manual
CE –marking
Serial number
Protecting earthing
Terminal for ground connection

GENERAL INFORMATION
03/2021 7 NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021
Fuse
Compressed air inlet
Compressed air outlet
Control wire input
Package handling label –fragile
Package handling label –this side up
Package handling label –keep dry
Package handling label –temperature limits
Package handling label –limited stacking
Package label –recyclable material
Manufacturer
3. DEVICE USE
3.1. Intended use
The compressor is used as source of clean oil-free compressed air intended to be used in industry
and laboratories, where parameters and properties of the compressed air are suitable.
The compressor is exclusively intended to compress air without content of explosive or chemically
unstable substances.
The compressor is intended for operation in clean and dry rooms
3.2. Incorrect use
Contamination risk.
Air from the compressor iswithout additional treatmentnot suitable for breathing
and direct contact with food
Explosion risk.
The product is not intended for operation in rooms with explosion risk.
The compressor must not be used to compress aggressive gases.
The compressor must not be operated in premises with occurrence of flammable vapors.
The compressor must not be operated in other conditions as mentioned in Technical data.

GENERAL INFORMATION
NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021 8 03/2021
Any other use of the product beyond the intended use is considered as incorrect use. The
manufacturer is not responsible for any damages or injuries as a result of incorrect use or
disobedience to instructions stated in this User manual. All risks shall be solely borne by the
user/operator.
4. GENERAL SAFETY INSTRUCTIONS
The product is designed and manufactured so that any risks connected with its use are minimized
and the product is safe for the user and surrounding when used according to the intended use and
the instructions stated below are followed.
4.1. Required qualification of the personnel
Each user must be trained by the manufacturer or an organization authorized by the
manufacturer or instructed on the device operation by other trained user.
Installation, new settings, changes, extensions and repairs of the product may be performed
by the manufacturer or an organization authorized by the manufacturer (hereinafter qualified
technician).
- Otherwise the manufacturer is not responsible for safety, reliability and correct functioning
of the product.
4.2. General instructions
When operating the compressor, all acts and local regulations valid in the place of use must
be observed. The operator and user are responsible for following the applicable regulations.
Before every use, the user must check, if the device is functioning correctly and safely.
Before building the compressor in other devices, the supplier must assess, if the supplied
air and construction of the device comply with the requirements of the specified intended
use. Taking this into account, follow the product technical data. Assessment of conformity
shall be performed by the manufacturer –supplier of the final product.
4.3. Protection from dangerous voltage and pressure
The equipment may only be connected to a properly installed socket connected to earth
(grounded).
Before the product is plugged in, make sure that the mains voltage and frequency stated on
the product are the same as the power mains.
Check for any damage to the connected compressed air system and electrical circuits before
use. Replace damaged pneumatic and electrical conductors immediately.
Immediately disconnect the productfrom the mains (remove the power cord from the socket)
in hazardous situations or when a technical malfunction occurs.
Never adjust or use the safety valve to release the air pressure in the air tank.
Never adjust or use pressure relief valves to release air pressure from the device.
4.4. Original spare parts and accessories
Only the use of original parts guarantees the safety of operating personnel and flawless
operation of the product itself. Only accessories and replacement parts specified in the
technical documentation or expressly approved by the manufacturer may be used.
The warranty does not cover damage resulting from the use of other accessories and
replacement parts as specified or recommended by the manufacturer and the
manufacturer has no related liability.

GENERAL INFORMATION
03/2021 9 NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021
5. STORAGE AND TRANSPORT CONDITIONS
The compressor is shipped from the manufacturer in transport packaging. This protects the product
from damage during transport.
Potential for damage to pneumatic components.
The compressor must be transported only when all air has been vented. Before
moving or transporting the compressor, release all the air pressure from the tank
and pressure hoses, from dryer chambers and drain condensate from the tank
and from the condensate separator on the dryer.
Keep the original factory packaging in case the device needs to be returned Use
the original factorypackaging during transport as it provides optimum protection
for the product. . If it is necessary to return the product during the warranty
period, the manufacturer is not liable for damages caused by improper
packaging.
The compressor is shipped in a vertical position and must be secured using
transport straps.
Protect the compressor from humid and dirty environments and extreme temperatures
during transport and storage. Do not store near any volatile chemical substances.
If not, please dispose of the original packaging material in an environmentally-friendly
way. The packaging cardboard can be recycled with old paper.
5.1. Ambient conditions
Products may only be stored and transported in vehicles that are free of any traces of volatile
chemicals under the following climactic conditions:
Temperature
–25°C to +55°C, 24 h at up to +70°C
Relative humidity
max. 90% (non-condensing)
Storing or shipping the equipment in any conditions other than those specified below is
prohibited.

PRODUCT DESCRIPTION
NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021 10 03/2021
PRODUCT DESCRIPTION
6. VARIANTS
The compressor is manufactured according to its intended application in the following variants:
DK50 4x4VRT/M
Composed of modules:
DK50 6x4VRT/M
1 compressor module with 4 or 6 aggregates and controls for the
assembled unit
2 adsorption dryer with connecting hoses
3 air tank module
DK50 4x4VRTS/M
Composed of modules:
DK50 6x4VRTS/M
1 compressor module together with a noise reducing enclosure and
comprised of 4 or 6 aggregates and controls for the assembled unit
2 adsorption dryer with connecting hoses
3 air tank module
DK 50 4x4VRT/M

PRODUCT DESCRIPTION
03/2021 11 NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021
DK50 4x4VRTS/M
DK 50 6x4VRT/M

PRODUCT DESCRIPTION
NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021 12 03/2021
DK50 6x4VRTS/M
7. ACCESSORIES
Accessories that are not included in the standard order must be ordered separately.
DK50 4x4VRT/M performance upgrade kit
If DK50 4x4VRT compressor performance is not keeping up with demand, a simple solution is to
contact the manufacturer about the DK50 6x4VRT/M performance upgrade kit.
The DK50 4x4 VRT/M conversion kit converts the existing compressor into a fully functional DK50
6x4VRT/M compressor with the required parameters in an efficient manner at optimal cost.
Use
Central
intake
Existing
type of
dryer
New
type of
dryer
Rated voltage /
working
pressure
Article number
DK50 4x4VRT/M
no
AD 1000E
AD
1500E
3x400 V / 50 Hz
(6-8 bar)
447000009-171
DK50 4x4VRTS/M
3x400 V / 50 Hz
(8-10 bar)
447000009-172
DK50 4x4VRT/M
yes
AD 1000E
AD
1500E
3x400 V / 50 Hz
(6-8 bar)
447000009-173
DK50 4x4VRTS/M
3x400 V / 50 Hz
(8-10 bar)
447000009-174
Central air pump intake kit
This kit provides a properly sized central intake filter located on the compressor module used to
supply the intakes of the individual air pumps. This extends the central filter replacement interval (to
every 2000 hours) compared to the interval for changing the filters on individual compressors, and
ensures simpler and faster central filter replacement.

PRODUCT DESCRIPTION
03/2021 13 NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021
Use
Article number
DK50 4x4VRT/M
447000001-021
DK50 4x4VRTS/M
447000001-020
DK50 6x4VRT/M
447000001-019
DK50 6x4VRTS/M
447000001-018
Set of compressed air outlet filters
The compressor may be equipped with a set of filters if specified. The filter set may be equipped
with an air pressure regulator.
Where a different level of air filtration is required, this requirement must be
agreed upon with the supplier and specified in the order.
Type
Use
Level of filtration
(µm)
Bypass
function *
Article number
FS 40F
DK50
4x4VRT/M
1
no
604014119-000
FS 40M
1+0.1
604014119-004
FS 40S
1+0.01
604014119-024
FS 40AH
1+AC+HC (0.01)
604014119-005
Type
Use
Level of filtration
(µm)
Bypass
function *
Article number
FS 41F
DK50
6x4VRT/M
1
no
604014119-006
FS 41M
1+0.1
604014119-010
FS 41S
1+0.01
604014119-025
FS 41AH
1+AC+HC (0.01)
604014119-011
*) These FS do not contain a filter bypass, which will ensure a continuous flow of air when replacing
the filter element. Such a set must be ordered separately.
Filter set regulator assembly
The compressor may be equipped with a pressure regulator of the compressed air outlet if specified.
The regulator must be selected according to the application to the filter set, or separately the
regulator shall ensure constant pressure at the outlet.
Type
Use
Article number
Regulator complete
DK50 4x4VRT/M
DK50 6x4VRT/M
604014125-000
Filter set brackets
A suitable bracket must be ordered for every filter set.
Type
Use
Article number
Compressor-mounted bracket
DK50 4x4VRT/M
DK50 6x4VRT/M
603014139-000
Wall-mounted bracket
603014120-000

PRODUCT DESCRIPTION
NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021 14 03/2021
Compressor module enclosure (noise reducing)
Enclosing the compressor module reduces the noise generated by the compressor by up to 11 dB(a)
compared to the compressor module without the enclosure while ensuring sufficient cooling for the
aggregates themselves for S1 class continuous operation.
Use
With central intake
Article number
DK50 4x4VRT/M
yes
447000001-022
DK50 6x4VRT/M
DK50 4x4VRT/M
no
447000001-023
DK50 6x4VRT/M
8. PRODUCT FUNCTION
8.1. 8.1. Compressor with adsorption dryer
Fig. 1: Compressor aggregates (12) draw in atmospheric air through the intake filters and compress
it through check valves into the compressed air system. A connecting hose (13) connects this
system to the external adsorption dryer (8). From the inlet to the dryer module, the air is first cooled
in the integrated cooler (9) and then through the condensate separator (10), entering the active
chamber with adsorbent (11), where the air is dried. A portion of the air is fed into the second,
regeneration chamber, where this air is used to remove moisture from the adsorbent, after which it
is released through the silencer (21). The active chamber switches on a cyclical basis. Dry and
filtered air then passes through the check valve into the air tank (2). The treated compressed air is
ready for additional use in the air tank.

PRODUCT DESCRIPTION
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Fig. 1 - Compressor with dryer

PRODUCT DESCRIPTION
NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021 16 03/2021
Fig. 2 –Electrical box / switchboard
Descriptions for figures 1-2:
1. Compressor module
2. Air tank
3. Electrical box / switchboard
4. Safety valve
5. Pressure sensor
6. Pressure gauge
7. Outlet valve
8. Adsorption dryer
9. Integrated cooler
10. Condensate separator
11. Dryer chamber
12. Air pump
13. Connecting hoses
14. Electrical cables
15. Drain valve
16. Display
17. Indicator - alarm
18. Start/stop button
19. Main switch
20. Temperature sensor
21. Noise silencer
22. Condensate drain solenoid valve
23. Non-return valve
24. Connector

TECHNICAL DATA
03/2021 17 NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021
TECHNICAL DATA
Compressors are designed for operation in dry, ventilated and dust-free indoor rooms under the
following climactic conditions:
Temperature
+5°C to +40°C
Relative humidity
max. 70%
Working pressure 6 –8 bar
DK50
4x4VRT/M
DK50
4x4VRTS/M
DK50
6x4VRT/M
DK50
6x4VRTS/M
Rated voltage
Frequency a)
V, Hz
3x400, 50
3x400, 50
3x400, 50
3x400, 50
Output at 6 bar (FAD) at
PDP-20°C
l/min.
900
900
1350
1350
Output at 6 bar (FAD) at
PDP-40°C
l/min.
860
860
1290
1290
Working pressure b)
bar
6.0 –8.0
6.0 –8.0
6.0 –8.0
6.0 –8.0
Max. current
A
22
22
29
29
Main circuit protection
device rating
A
25
25
32
32
Main electrical feeder
mm2
4
4
6
6
Enclosure
IP10
IP30
IP10
IP30
Motor output
kW
2.2
2.2
2.2
2.2
Air tank capacity
l
500
500
500
500
Air quality –filtration
m
-
-
-
-
Maximum operating
pressure of safety valve
bar
10.0
10.0
10.0
10.0
Noise at 5 bar (LpA)
dB
≤80
≤70
≤83
≤72
Operating mode
%
S1-100
S1-100
S1-100
S1-00
PDP drying
performance at 7 bar d)
°C
-20
-40
-20
-40
-20
-40
-20
-40
Time to fill air tank from
0 to 7 bar
s
150
150
115
115
Net weight c)
kg
439
572
531
664
Weight - compressor
module
kg
268
401
350
483
Weight - dryer module
kg
44
44
54
54
Weight of air tank
kg
127
127
127
127
Net dimensions
W x L x H
mm
2875 x 2090 x
705
2875 x 2090 x
705
2875 x 2090
x 705
2875 x 2090 x
705
Dimensions -
compressor module
(W x L x H)
mm
1235 x 1720 x
630
1235 x 1755 x
705
1235 x 1720
x 630
1235 x 1760 x
705
Dimensions –dryer
module
mm
530 x 965 x
350
530 x 965 x
350
530 x 1310 x
350
530 x 1310 x
350
Air tank dimensions
(W x L x H)
mm
730 x 2090 x
705
730 x 2090 x
705
730 x 2090 x
705
730 x 2090 x
705
Required cooling air
changes in space
m3/h
2250
2250
3000
3000

TECHNICAL DATA
NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021 18 03/2021
a) Specify the compressor version when ordering
b) Consult any other range of pressure with the supplier
c) Weight is indicative and only applies to the product without accessories
d) Applies to ambient temperatures of <30°C PDP – pressure dew point
Dependence of compressor output on working pressure

TECHNICAL DATA
03/2021 19 NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021
Working pressure 8 –10 bar
DK50
4x4VRT/M
DK50
4x4VRTS/M
DK50
6x4VRT/M
DK50
6x4VRTS/M
Rated voltage
Frequency a)
V, Hz
3x400, 50
3x400, 50
3x400, 50
3x400, 50
Output at 8 bar (FAD) at
PDP-20°C
l/min.
690
690
1040
1040
Output at 8 bar (FAD) at
PDP-40°C
l/min.
650
650
980
980
Working pressure b)
bar
8.0 –10.0
8.0 –10.0
8.0 –10.0
8.0 –10.0
Max. current
A
23
23
30
30
Main circuit protection
device rating
A
25
25
32
32
Main electrical feeder
mm2
4
4
6
6
Enclosure
IP10
IP30
IP10
IP30
Motor output
kW
2.2
2.2
2.2
2.2
Air tank capacity
l
500
500
500
500
Air quality –filtration
m
-
-
-
-
Maximum operating
pressure of safety valve
bar
11.0
11.0
11.0
11.0
Noise at 5 bar (LpA)
dB
≤80
≤70
≤83
≤82
Operating mode
%
S1-100
S1-100
S1-100
S1-00
PDP drying
performance at 7 bar d)
°C
-20
-40
-20
-40
-20
-40
-20
-40
Time to fill air tank from
0 to 7 bar
s
150
150
115
115
Net weight c)
kg
439
572
531
664
Weight - compressor
module
kg
268
401
350
483
Weight - dryer module
kg
44
44
54
54
Weight of air tank
kg
127
127
127
127
Net dimensions
W x L x H
mm
2875 x 2090 x
705
2875 x 2090 x
705
2875 x 2090
x 705
2875 x 2090 x
705
Dimensions -
compressor module
(W x L x H)
mm
1235 x 1720 x
630
1235 x 1755 x
705
1235 x 1720
x 630
1235 x 1760 x
705
Dimensions –dryer
module
mm
530 x 965 x
350
530 x 965 x
350
530 x 1310 x
350
530 x 1310 x
350
Air tank dimensions
(W x L x H)
mm
730 x 2090 x
705
730 x 2090 x
705
730 x 2090 x
705
730 x 2090 x
705
Required cooling air
changes in space
m3/h
2250
2250
3000
3000
a) Specify the compressor version when ordering
b) Consult any other range of pressure with the supplier
c) Weight is indicative and only applies to the product without accessories
d) Applies to ambient temperatures of <30°C PDP – pressure dew point

TECHNICAL DATA
NP-DK50-Nx4VRTM-AD-A-EN-4_03-2021 20 03/2021
Dependence of compressor output on working pressure
FAD correction of capacity for altitude
Capacity given in the form of FAD („Free Air Delivery“) applies to the following conditions:
Altitude
0 m.n.m.
Temperature
20°C
Atmospheric pressure
101325 Pa
Relative humidity
0%
To calculate FAD compressor capacity in dependence on altitude, it is necessary to apply correction
factor according to the following table:
Altitude [m.n.m.]
0 -1500
1501 - 2500
2501 - 3500
3501 - 4500
FAD correction factor
1
0.80
0.71
0.60