EKOM DK50 4VR/50 User manual

USER MANUAL
EN
BENUTZERHANDBUCH
DE
NÁVOD NA POUŽITIE
SK

COMPRESSOR
KOMPRESSOR
KOMPRESOR
DK50 4VR/50
DK50 2x4VR/110
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
DATUM DER LETZTEN ÜBERARBEITUNG
DÁTUM POSLEDNEJ REVÍZIE
08/2021
NP-DK50 4VR 50, DK50
2x4VR 110-A-2_08-2021-MD
112000446-000

CONTENTS.................................................................................................. 5
INHALT........................................................................................................ 56
OBSAH ........................................................................................................109

CONTENTS
08/2021 5 NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD
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..............................................................................7
5. STORAGE AND TRANSPORT CINDITIONS...................................................................9
PRODUCT DESCRIPTION ..........................................................................................................10
6. VARIANTS.....................................................................................................................10
7. ACCESSORIES.............................................................................................................11
8. PRODUCT FUNCTION..................................................................................................12
TECHNICAL DATA......................................................................................................................18
INSTALLATION...........................................................................................................................23
9. INSTALLATION CONDITIONS ......................................................................................23
10. COMPRESSOR ASSEMBLY.........................................................................................23
11. PNEUMATIC CONNECTION.........................................................................................28
12. ELECTRICAL CONNECTION........................................................................................30
13. COMMISSIONING .........................................................................................................31
14. PNEUMATIC AND ELECTRICAL DIAGRAMS...............................................................32
OPERATION................................................................................................................................42
15. SWITCHING ON THE COMPRESSOR..........................................................................43
16. SWITCHING OFF THE COMPRESSOR........................................................................43
PRODUCT MAINTENANCE ........................................................................................................44
17. PRODUCT MAINTENANCE...........................................................................................44
18. LONG-TERM SHUTDOWN............................................................................................53
19. DISPOSAL OF DEVICE.................................................................................................53
TROUBLESHOOTING.................................................................................................................54
20. REPAIR SERVICE.........................................................................................................55
ANNEX ......................................................................................................................................161
21. INSTALLATION RECORD ...........................................................................................161

GENERAL INFORMATION
NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD 6 08/2021
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
08/2021 7 NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD
Fuse
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.
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

GENERAL INFORMATION
NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD 8 08/2021
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 product from 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.
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
08/2021 9 NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD
5. STORAGE AND TRANSPORT CINDITIONS
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 asit 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
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 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD 10 08/2021
PRODUCT DESCRIPTION
6. VARIANTS
The compressor is manufactured according to its intended application in the following variants:
DK50 4VR/50
Compressor for installation in areas where operations will not disturb the
surroundings
DK50 4VR/50/M
Compressor with a membrane air dryer
DK50 4VR/50S
Compressor in a cabinet with efficient soundproofing
DK50 4VR/50S/M
Compressor with membrane dryer in a cabinet
Cabinet S50R
Used to reduce the level of noise generated by the compressor
DK50 2x4VR/110
Compressor for installation in areas where operations will not disturb the
surroundings
DK50 2x4VR/110/M
Compressor with a membrane air dryer
DK50 2x4VR/110S
Compressor in a cabinet with efficient soundproofing
DK50 2x4VR/110S/M
Compressor with membrane dryer in a cabinet
Cabinet S110R
Used to reduce the level of noise generated by the compressor
DK50 4VR/50
S50R
DK50 4VR/50S
DK50 2x4VR/110
S110R
DK50 2x4VR/110S

PRODUCT DESCRIPTION
08/2021 11 NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD
7. ACCESSORIES
Accessories that are not included in the standard order must be ordered separately.
Automatic condensate drain
The automatic condensate drain (AOK) automatically drains condensate from the compressor’s air
tank based on a pre-set time interval. The condensate drain (AOK) is a suitable accessory for
compressor models without dryers.
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)
Article number
FS 30F
DK50 4VR/50
DK50 4VR/50/M
1
604014119-014
FS 30M
1+0.1
604014119-015
FS 30S
1+0.01
604014119-017
FS 30A
1+0.01+A**
604014119-018
FS 40F
DK50 2x4VR/110
DK50 2x4VR/110/M
1
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
**) A –submicrofilter with activated carbon
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
(to the filter assembly)
DK50 4VR/50
DK50 4VR/50/M
604014130-000
REG12 (separate)
447000001-088
Regulator complete
DK50 2x4VR/110
DK50 2x4VR/110/M
604014125-000
REG15
447000001-115
Filter set brackets
A suitable bracket must be ordered for every filter set.
Type
Use
Article number
AOK 18
DK50 4VR/50
604014082-000
AOK 19
DK50 2x4VR/110
604014083-000
Type
Use
Article number
Compressor-mounted bracket
DK50 4VR/50
DK50 4VR/50/M
603014177-000
Compressor-mounted bracket
DK50 2x4VR/110
DK50 2x4VR/110/M
604014131-000
Wall-mounted bracket
603014120-000

PRODUCT DESCRIPTION
NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD 12 08/2021
Equipotential bonding socket
The socket allows an equipotential bonding.
8. PRODUCT FUNCTION
8.1. Compressor
The air pump (1) draws in atmospheric air through an inlet filter (8) and compresses it through a
non-return valve (3) into an air tank (2) from which the device draws compressed air. If the pressure
in the air tank drops to the switch-on pressure, the pressure switch (4) turns on the compressor and
the compressor supplies compressed air into the air tank until it reaches the switch-off pressure,
when the compressor switches off. The safety valve (5) prevents the pressure in the air tank from
rising above the maximum allowed value. The drain valve (7) drains condensate from the air tank.
Compressed, oil-free filtered air is stored in the air tank ready for use.
Condensate must be drained from the air tank at regular intervals (see Chapter 17.1).
8.2. Compressor with membrane dryer
The air pump (1) draws in air through an inlet filter (8) and compresses it, feeding it to the cooler
(10) through the filter (18) and the non-return valve (3) into the dryer (9), and feeds the clean and
dry air into the air tank (2). A part of the air is released from the dryer with the captured moisture,
which is manifested as a light air stream along the body of the dryer (9). Condensate from the filter
is automatically drained at regular intervals into the condensate collection vessel (12) via the
condensate drain solenoid valve (17). The dryer ensures continuous drying of the compressed air.
The drain valve (7) drains condensate from the air tank when drying performance is checked.
Compressed, oil-free filtered air is stored in the air tank ready for use.
For the membrane dryer to work as intended, the dryer is connected directly to the air tank without
the use of a check valve. As the membrane dryer contains selective membrane fibres, there is a
small amount of air leakage through them (about 0.5 bar/30 min)
This is why there is a gradual, slow drop in pressure even when there is no demand for compressed
air (from the air tank), however, this is not a malfunction.
The pressure vessel does not need to be drained.
8.3. Compressor cabinet
The cabinet serves as a compact soundproof compressor enclosure and ensures the sufficient
exchange of cooling air. The fan under the air pump (11) and the cabinet fans (21) cool the
compressor. The fans run concurrently with the compressor motor or when the temperature switch
is activated at a temperature higher than 40°C. Once the space in the cabinet cools down to about
32°C, the fans turn off automatically.
Type
Use
Name
Article number
POAG-KBT6-EC
DK50 4VR/50
DK50 4VR/50/M
DK50 2x4VR/110
DK50 2x4VR/110/M
Mains plug connector
033400075-000
FLEXI-S/POAG-HK6
Conductor (1 m)
034110083-000

PRODUCT DESCRIPTION
08/2021 13 NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD
Risk of compressor overheating.
Make sure that there are no obstacles at the cooling air inlet into the cabinet
(around the bottom part of the cabinet) and at the hot air outlet on the top back
side of the cabinet.
If the compressor is placed on a soft floor, e.g. carpet, create space between the
base and the floor or the cabinet and the floor, e.g. underlay the footings with
hard pads to ensure sufficient cooling of the compressor.
Descriptions for figures 1 - 3
1 Air pump
2 Air tank
3 Non-return valve
4 Pressure switch
5 Safety valve
6 Pressure gauge
7 Drain valve
8 Inlet filter
9 Dryer
10 Cooler
11 Compressor fan
12 Condensate collection vessel
13 Magnetic holder
14 Compressed air outlet
15 Compressor wheel
16 Electrical box / switchboard
17 Condensate drain solenoid valve
18 Filter
21 Cabinet fan
22 Cabinet pressure gauge
23 Switch
24 Cabinet connector
25 Pressure gauge hose
26 Pulling system
27 Wall stop
28 Power cord
29 Cabinet gas springs
30 Connecting reinforcement
31 Maintenance indicator
Fig. 1: Compressor with membrane dryer
DK50 4VR/50/M

PRODUCT DESCRIPTION
NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD 14 08/2021
DK50 2x4VR/110/M

PRODUCT DESCRIPTION
08/2021 15 NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD
Fig. 2: Compressor
DK50 4VR/50
DK50 2x4VR/110

PRODUCT DESCRIPTION
NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD 16 08/2021
Fig. 3: Cabinet
A - DK50 4VR/50S

PRODUCT DESCRIPTION
08/2021 17 NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD
B - DK50 2x4VR/110S

TECHNICAL DATA
NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD 18 08/2021
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
4VR/50
DK50
4VR/50S
DK50
4VR/50/M
DK50
4VR/50S/M
Nominal voltage
Frequency a)
V, Hz
3x400, 50
3x400, 50
3x400, 50
3x400, 50
Capacity at 6 bar
(FAD)
l/min
270
270
215
215
Working pressure b)
bar
6.0 –8.0
6.0 –8.0
6.0 –8.0
6.0 –8.0
Max. current
A
4.7
5.1
4.8
52
Motor power
kW
2.2
2.2
2.2
2.2
Air tank volume
l
50
50
50
50
Air quality - filtration
m
-
-
0.1
0.1
Maximum operating
pressure of safety
valve
bar
12.0
12.0
12.0
12.0
Noise level at 5 bar
(LpA)
dB
≤77.0
≤58.0
≤77.0
≤58.0
Operating mode
%
S1-100
S1-100
S1-100
S1-100
PDP drying
performance at 7 bar
°C
-
-
+3
+3
Dimensions (net)
w x d x h
mm
577x587x815
750x778x1015
577x628x815
750x778x1015
Net weight c)
kg
70
128
81
139
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
Dependence of compressor output on working pressure

TECHNICAL DATA
08/2021 19 NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD
Working pressure 8 –10 bar
DK50
4VR/50
DK50
4VR/50S
DK50
4VR/50/M
DK50
4VR/50S/M
Nominal voltage
Frequency a)
V, Hz
3x400, 50
3x400, 50
3x400, 50
3x400, 50
Capacity at 8 bar
(FAD)
l/min
220
220
175
175
Working pressure b)
bar
8.0 –10.0
8.0 –10.0
8.0 –10.0
8.0 –10.0
Max. current
A
4.7
5.1
5.4
59
Motor power
kW
2.2
2.2
2.2
2.2
Air tank volume
l
50
50
50
50
Air quality - filtration
m
-
-
0.1
0.1
Maximum operating
pressure of safety
valve
bar
12.0
12.0
12.0
12.0
Noise level at 5 bar
(LpA)
dB
≤77.0
≤58.0
≤77.0
≤58.0
Operating mode
%
S1-100
S1-100
S1-100
S1-100
PDP drying
performance at 7 bar
°C
-
-
+3
+3
Dimensions (net)
w x d x h
mm
577x587x815
750x778x1015
577x628x815
750x778x1015
Net weight c)
kg
70
128
81
139
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
Dependence of compressor output on working pressure

TECHNICAL DATA
NP-DK50 4VR 50, DK50 2x4VR 110-A-2_08-2021-MD 20 08/2021
Working pressure 6 –8 bar
DK50
2x4VR/110
DK50
2x4VR/110S
DK50
2x4VR/110/M
DK50
2x4VR/110S/M
Nominal voltage
Frequency a)
V, Hz
3x400, 50
3x400, 50
3x400, 50
3x400, 50
Capacity at 6 bar
(FAD)
l/min
540
540
430
430
Working pressure b)
bar
6.0 –8.0
6.0 –8.0
6.0 –8.0
6.0 –8.0
Max. current
A
9,4
10,2
10,1
10,6
Motor power
kW
2x2.2
2x2.2
2x2.2
2x2.2
Air tank volume
l
110
110
110
110
Air quality - filtration
m
-
-
0.1
0.1
Maximum operating
pressure of safety
valve
bar
9.0
9.0
9.0
9.0
Noise level at 5 bar
(LpA)
dB
≤77.0
≤58.0
≤77.0
≤58.0
Operating mode
%
S1-100
S1-100
S1-100
S1-100
PDP drying
performance at 7 bar
°C
-
-
+3
+3
Dimensions (net)
w x d x h
mm
1085x511x830
1260x834x1046
1085x678x830
1260x834x1046
Net weight c)
kg
136
218
158
240
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
Dependence of compressor output on working pressure