Beko DRYPOINT RA VSD Series User guide
EN - english
Instructions for installation and operation
Compressed air refrigeration dryer
DRYPOINT®RA VSD 800-2500
2 DRYPOINT® RA VSD 800-2500
Dear customer,
Thank you for deciding in favour of the DRYPOINT® RA VSD 800-2500 compressed-air refrigeration dryer. Please read
these installation and operating instructions carefully before mounting and starting up the DRYPOINT®RA VSD 800-
2500 and follow our directions. Perfect functioning of the DRYPOINT®RA VSD 800-2500 and thus reliable
compressed-air drying can only be guaranteed when the provisions and notes stipulated here are strictly adhered to.
Name plate
DRYPOINT® RA VSD 800-2500 3
Contents
1Name plate 5
2Safety instructions 5
2.1Safety pictograms in accordance with DIN 4844 6
2.2Signal words in accordance with ANSI 8
2.3Overview of the safety instructions 8
3Proper use of the dryer 11
4Exclusion from a field of application 11
5Instructions for the use of pressure equipment according to PED directive 2014/68/EU 11
6Transport 12
7Storage 12
8Installation 13
8.1Place of installation 13
8.2Installation layout 14
8.3Correction factors 15
8.4Connection to the compressed air system 16
8.4.1Inlet / outlet flanged air connections (only RA VSD 800-1250) 16
8.5Connection to the cooling water network (Water-Cooled) 17
8.6Minimum cooling water requirements (referred to Tube & Shell condenser) 17
8.7Electrical connections 18
8.8Condensate drain 19
9Start-up 19
9.1Preliminary operation 19
9.2First start-up 20
9.3Start-up and shut down 21
10Technical data 22
10.1Technical data DRYPOINT RA VSD 800 – 2500 3/460/60 22
11Technical description 23
11.1Control panel 23
11.2Operation 23
11.3Flow diagram (Air-Cooled) 24
11.4Flow diagram (Water-Cooled) 24
11.5Refrigerating compressor 25
11.6Condenser (Air-Cooled) 25
11.7Condenser (Water-Cooled) 25
11.8Condenser water regulating valve (Water-Cooled) 25
11.9Filter dryer 26
11.10Electronic Expansion Valve (EEV) 26
11.11Alu-Dry module 26
11.12Refrigerant pressure switches LPS – HPS 26
11.13Compressor crankcase heater 26
11.14Electrical panel fan 26
11.15DMC55 electronic control unit 27
11.15.1Starting the dryer (“ON” mode) 27
11.15.2Stopping the dryer (“STANDBY” mode) 27
11.15.3Condensation drain test 27
11.15.4Chilling circuit process values 28
11.15.5WARNING condition 29
11.16ALARM condition 31
11.16.1Alarm history 33
11.16.2Installing and Removing the USB storage drive 34
11.16.3Compressor and fan drive process values 34
11.16.4Electronic expansion valve process values 35
11.16.5Energy saving data and operating hours 36
11.16.6Remote start/stop, remote reset of Warnings/Alarms 37
11.16.7“Alarm” and "dryer running" signal contacts 37
11.16.84-20mA analogue output 37
11.16.9RS485 MODBUS RTU communication port 38
11.16.10Changing process user parameters 38
11.16.11List of spare parts 40
11.16.12System settings and weekly timer 41
11.17Electronically level-controlled BEKOMAT condensate drain 42
12Maintenance, troubleshooting, spare parts and dismantling 43
12.1Checks and maintenance 43
12.2Troubleshooting 44
4 DRYPOINT® RA VSD 800-2500
12.3Spare parts 54
12.4Maintenance operation on the refrigeration circuit 55
12.5Dismantling of the dryer 55
13Attachments 56
Exploded views – List of components 56
Electric diagrams – List of components 56
13.1Dryers dimensions 56
13.1.1DRYPOINT® RA VSD 800-1250 57
13.1.2DRYPOINT® RA VSD 1500-2500 57
13.2Exploded views 57
13.2.1DRYPOINT® RA VSD 800-1250 Air-Cooled 57
13.2.2DRYPOINT® RA VSD 800-1250 Water-Cooled 57
13.2.3DRYPOINT® RA VSD 1500-2500 Air-Cooled 57
13.2.4DRYPOINT® RA VSD 1500-2500 Water-Cooled 57
13.3Electric diagrams 57
13.3.1DRYPOINT® RA VSD 800-1250 57
13.3.2DRYPOINT® RA VSD 1500-1750 57
13.3.3DRYPOINT® RA VSD 2000-2500 57
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Name plate
DRYPOINT® RA VSD 800-2500 5
1 Name plate
The name plate is on the back of the dryer and comprises all primary data of the device. Always refer to this data when
contacting the manufacturer or the sales department.
All guarantee claims will expire in the event that the name plate is modified or removed.
2 Safety instructions
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Please check whether or not these instructions correspond to the device type.
Please adhere to all advice given in these operating instructions. They include essential information
which must be observed during installation, operation and maintenance. Therefore, it must be ensured
that these operating instructions are read by the fitter and the responsible operator / certified skilled
personnel prior to installation, start-up and maintenance.
The operating instructions must be accessible at all times at the place of application of the DRYPOINT®
RA VSD 800-2500 compressed-air refrigeration dryer.
In addition to these operating instructions, local and national regulations need to be observed, where
required.
Ensure that operation of the DRYPOINT®RA VSD 800-2500 compressed-air refrigeration dryer only
takes place within the permissible limit values indicated on the name plate. Any deviation from these
limit values involves a risk for persons and for the material, and may result in malfunction or a
breakdown.
After installing the device correctly and in accordance with the instructions in this manual, the dryer is ready to
operate, further settings are not required. Operation is fully automatic and maintenance is limited to several
examinations and cleaning measures which are described in the following chapters.
This manual must be available at all times for future reference and is a constituent part of the dryer.
If you have any questions regarding these installation and operating instructions, please contact BEKO
TECHNOLOGIES.
Safety instructions
6 DRYPOINT® RA VSD 800-2500
2.1 Safety pictograms in accordance with DIN 4844
Observe operating instructions
General danger symbol
Supply voltage
Danger: component or system under pressure
Hot surfaces
Non-breathable air
Do not use water to extinguish the fire
Do not operate with open cover (housing)
Maintenance works or controlling measures must only be carried out by qualified personnel 1
Do not smoke
Note
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6
ARIA
AIR
LUFT
AIR
Connection point compressed-air inlet
ARIA
AIR
LUFT
AIR
Connection point compressed-air outlet
Connection point condensate drain
Connection point cooling-water inlet (water-cooled)
Connection point cooling-water outlet (water-cooled)
1Certified skilled personnel are persons who are authorised by the manufacturer, with experience and technical training, who are
well-grounded in the respective provisions and laws and capable of carrying out the required works and of identifying and avoiding
any risks during the machine transport, installation, operation and maintenance.
Qualified and authorised operators are persons who are instructed by the manufacturer regarding the handling of the refrigeration
system, with experience and technical training, and who are well-grounded in the respective provisions and laws.
Safety instructions
DRYPOINT® RA VSD 800-2500 7
Works can be carried out by the operator of the plant, provided that they are skilled accordingly1.
NOTE: Text that contains important specifications to be considered – does not refer to safety precautions.
The device was carefully designed with particular attention paid to environmental protection:
CFC-free refrigerants
CFC-free insulation material
Energy-saving design
Limited acoustic emissions
Dryer and packaging comprise reusable materials
This symbol advises the user to observe the environmental aspects and comply with the recommendations
connected with this s
y
mbol.
Safety instructions
8 DRYPOINT® RA VSD 800-2500
2.2 Signal words in accordance with ANSI
Danger! Imminent hazard
Consequences of non-observance: serious injury or death
Warning! Potential hazard
Consequences of non-observance: possible serious injury or death
Caution! Imminent hazard
Consequences of non-observance: possible injury or property damage
Notice! Potential hazard
Consequences of non-observance: possible injury or property damage
Important! Additional advice, info, hints
Consequences of non-observance: disadvantages during operation and maintenance, no danger
2.3 Overview of the safety instructions
Certified skilled personnel
Installation works must exclusively be carried out by authorised and qualified skilled personnel. Prior to
undertaking any measures on the compressed-air refrigeration dryer, the certified skilled personnel shall read up
on the device by carefully studying the operating instructions. The operator is responsible for the adherence to
these provisions. The respective directives in force apply to the qualification and expertise of the certified skilled
personnel.
For safe operation, the device must only be installed and operated in accordance with the indications in
the operating instructions. In addition, the national and operational statutory provisions and safety
regulations, as well as the accident prevention regulations required for the respective case of
application, need to be observed during employment. This applies accordingly when accessories are used.
Danger!
Compressed air!
Risk of serious injury or death through contact with quickly or suddenly escaping compressed
air or through bursting and/or unsecured plant components.
Compressed air is a highly dangerous energy source.
Never work on the dryer when the system is under pressure.
Never direct the compressed-air outlet or condensate drain hoses at persons.
The user is responsible for the proper installation of the dryer. Non-observance of the instructions in the
"Installation" chapter leads to the expiration of the guarantee. Improper installation may result in dangerous
situations for the personnel and/or the device.
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Danger!
Supply voltage!
Contact with non-insulated parts carrying supply voltage involves the risk of an electric shock
resulting in injuries and death.
Only qualified and skilled personnel are authorised to run electrically-operated devices. Prior to undertaking
maintenance measures at the device, the following requirements must be met:
Make sure that the power supply is switched off and that the device is off and marked for maintenance
measures. Please also ensure that the power suppl
y
cannot be re-established durin
g
the works.
Prior to carrying out maintenance works at the dryer, switch it off main switch (control panel pos.1) and wait for
at least 30 minutes.
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Caution!
Refrigerant!
The compressed-air refrigeration dryer uses HFC-containing refrigerants as a coolant.
Please observe the correspondin
g
para
g
raph entitled "Maintenance works at the refri
g
eration c
y
cle".
Safety instructions
DRYPOINT® RA VSD 800-2500 9
Warning!
Refrigerant leak!
A refrigerant leak involves the danger of serious injury and damage to the environment.
The compressed-air refrigeration dryer contains fluorinated greenhouse gas/refrigerant.
Installation, repair and maintenance works at the refrigeration system must only be carried out by certified skilled
personnel (specialists). A certification in accordance with EC regulation 303/2008 must be available.
The requirements of the EC 842/2006 directive must be met under all circumstances.
Please refer to the indications on the name plate as regards the type and amount of refrigerant.
Comply with the following protective measures and rules of conduct:
1. Storage: Keep the container tightly closed. Keep it in a cool and dry place. Protect it against heat and
direct sunlight. Keep it away from ignition sources.
2. Handling: Take measures against electrostatic charging. Ensure good ventilation/suction at the
workplace. Check fittings, connections and ducts for tightness. Do not inhale the gas. Avoid contact
with the eyes or the skin.
3. Prior to carrying out works on refrigerant-carrying parts, remove the refrigerant to such an extent that
safe working is possible.
4. Do not eat, drink or smoke during work. Keep out of the reach of children.
5. Breathing protection: ambient-air-independent respirator (at high concentrations).
6. Eye protection: sealing goggles.
7. Hand protection: protective gloves (e.g. made of leather).
8. Personal protection: protective clothing.
9. Skin protection: use protective cream.
In addition, the safet
y
data sheet for the refri
g
erant needs to be observed!
Caution!
Hot surfaces!
During operation, several components can reach surface temperatures of more than +60°C. There
is the risk of burns.
All components concerned are installed inside of the closed housing. The housing must only be opened
by certified skilled personnel 2.
Caution!
Improper use!
The device is intended for the separation of water in compressed air. The dried compressed air cannot be
used for breathing-air purposes and is not suitable for the direct contact with food.
This dryer is not suitable for the treatment of contaminated air or of air containing solids.
2Certified skilled personnel are persons who are authorised by the manufacturer, with experience and technical training, who are
well-grounded in the respective provisions and laws and capable of carrying out the required works and of identifying and avoiding
any risks during the machine transport, installation, operation and maintenance.
Qualified and authorised operators are persons who are instructed by the manufacturer regarding the handling of the refrigeration
system, with experience and technical training, and who are well-grounded in the respective provisions and laws.
Safety instructions
10 DRYPOINT® RA VSD 800-2500
Note!
Contaminated intake air!
In normal condition (comply with ISO 8573.1 class 2.-3) we recommend the installation of C-Filters (e. g.
CLEARPOINT S040CWT) upstream to the dryer.
In case the intake air is strongly contaminated (ISO 8573.1 class 5.-4 or poorer quality), we recommend
the installation of a fine filter (e.g. CLEARPOINT S040FWT) in order to guarantee an optimal thermal
transfer in the heat exchanger. Strongly contaminated compressed air leads to the concentration of oil,
creating an oil layer that interrupts the thermal transfer and could clog the heat exchanger / filter.
Caution!
Heating-up through fire!
In the event of a heating-up through fire, the containers and pipes of the refrigerant system can
burst.
In this case, please proceed as follows:
Switch off the refrigeration plant.
Switch off the mechanical ventilation of the machinery compartment.
Use ambient-air-independent respirators.
Containers and plants which are filled with refrigerant can burst violently in the event of fire.
The refrigerants themselves are incombustible, but they are degraded to very toxic products at high
temperatures.
Remove the container/plant from the fire zone, as there is the risk of bursting!
Cool down containers and bottles via a directed water jet from a safe position.
In the event of fire, please use an approved fire extinguisher. Water is not a suitable agent to extinguish
an electrical fire.
This must only be carried out by persons who are trained and informed about the hazards emanating
from the product.
Caution!
Unauthorised intervention!
Unauthorised interventions may endanger persons and plants and lead to malfunction.
Unauthorised interventions, modification and abuse of the pressure devices are prohibited.
The removal of sealings and leadings at safety devices is prohibited.
Operators of the devices must observe the local and national pressure equipment regulations in the
country of installation.
Note!
Ambient conditions!
In the event that the dryer is not installed under suitable ambient conditions, the ability of the device to
condense refrigerant gas is impaired. This can result in a higher load of the refrigerating compressor,
and in a loss of efficiency and performance of the dryer.
This in turn leads to overheated condenser fan motors, to malfunction of electric components and to a
breakdown of the dryer. Failures of this type will affect warranty considerations.
Do not install the dryer in an environment in which chemicals with a corrosive effect, explosive gases,
toxic
g
ases, evaporation heat, hi
g
h ambient temperatures or extreme dust and dirt can be found.
Proper use of the dryer
DRYPOINT® RA VSD 800-2500 11
3 Proper use of the dryer
This dryer has been designed, manufactured and tested for the purpose of separating the humidity normally contained
in compressed air. Any other use has to be considered improper.
The Manufacturer will not be responsible for any problem arising from improper use; the user will bear responsibility for
any resulting damage.
Moreover, the correct use requires the adherence to the installation instructions, specifically:
Voltage and frequency of the main power.
Pressure, temperature and flow-rate of the inlet air.
Pressure, temperature and cooling water capacity (Water-Cooled).
Ambient temperature.
This dryer is supplied tested and fully assembled. The only operation left to the user is the connection to the plant in
compliance with the instructions given in the following chapters.
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4 Exclusion from a field of application
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Note!
Improper use!
The device is intended for the separation of water in compressed air. The dried compressed air
cannot be used for breathing-air purposes and is not suitable for the direct contact with food.
This dryer is not suitable for the treatment of contaminated air or of air containing solids.
5 Instructions for the use of pressure equipment according to PED directive 2014/68/EU
The DRYPOINT®RA VSD 800-2500 compressed-air refrigeration dryer contains pressure equipment in the sense of
the 2014/68/EU Pressure Equipment Directive. Therefore, the entire plant needs to be registered with the supervisory
authority if required in accordance with the local regulations.
For the examination prior to the start-up and for periodic inspections, the national regulations need to be observed,
such as the industrial safety regulation in the United States of America. In countries outside the US, the respective
regulations in force there need to be adhered to.
The proper use of pressure devices is the basic requirement for safe operation. As regards pressure devices, the
following points need to be observed:
The DRYPOINT®RA VSD 800-2500 compressed-air refrigeration dryer must only be employed within the pressure
and temperature range limits indicated by the manufacturer on the name plate.
No welding must be carried out on the pressure parts.
The DRYPOINT®RA VSD 800-2500 compressed-air refrigeration dryer must neither be installed in insufficiently
ventilated rooms nor near heat sources or inflammable substances.
To avoid fractures resulting from material fatigue, the refrigeration dryer should not be exposed to vibrations during operation.
The maximum operating pressure indicated by the manufacturer on the name plate must not be exceeded. It is the
installer's responsibility to install the appropriate safety and control devices. Prior to the start-up of the DRYPOINT®
RA VSD 800-2500 compressed-air refrigeration dryer, the connected pressure generator (compressor etc.) must
be set to the max. permissible operating pressure. The integrated safeguard needs to be checked by an approved
inspection agency.
The documents related to the DRYPOINT®RA VSD 800-2500 compressed-air refrigeration dryer (manual,
operating instructions, manufacturer's declaration etc.) must be kept safe for future reference.
No objects whatsoever must be installed at or placed on the DRYPOINT®RA VSD 800-2500 compressed-air
refrigeration dryer and the connecting lines.
Installation of the DRYPOINT®RA VSD 800-2500 compressed-air refrigeration dryer in frost-free places only.
Operation of the DRYPOINT®RA VSD 800-2500 compressed-air refrigeration dryer is only permissible with fully
closed and intact housing and cover panels. Operation of the DRYPOINT®RA VSD 800-2500 compressed-air
refrigeration dryer with damaged housing/cover panels is prohibited.
Transport
12 DRYPOINT® RA VSD 800-2500
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6 Transport
Check the packaging for visible loss or damage. If no visible damage can be ascertained, place the unit in close
proximity to the place of installation and unpack the device.
During this procedure, the dryer must always remain in an upright position. The components may be damaged when
the unit is tilted or turned upside down.
Store the device in a dry environment and do not expose it to extreme weather conditions.
Handle with care. Strong shocks can cause irreparable damage.
7 Storage
Keep the device away from extreme weather
conditions even when packaged.
Keep the dryer in an upright position, also while it is
stored. Tilting the device or turning it upside down can
cause irreparable damage to some components.
When the dryer is not in use, it can be stored in its
packaging in a dust-free and protected place at a
temperature of +34°F (+1°C) … +122°F (+50°C) and
at a specific humidity of max. 90%. If the storage
period exceeds 12 months, you should contact the
manufacturer.
The packaging materials are recyclable. Dispose of material in compliance with the rules and
regulations in force in the destination country.
SCC0001
Installation
DRYPOINT® RA VSD 800-2500 13
8 Installation
8.1 Place of installation
Note!
Ambient conditions!
In the event that the dryer is not installed under suitable ambient conditions, the ability of the device to
condense refrigerant gas is impaired. This can result in a higher load of the refrigerating compressor, and
in a loss of efficiency and performance of the dryer.
This in turn leads to overheated condenser fan motors, to malfunction of electric components and to a
breakdown of the dryer. Failures of this type will affect warranty considerations.
Do not install the dryer in an environment in which chemicals with a corrosive effect, explosive gases,
toxic gases, evaporation heat, high ambient temperatures or extreme dust and dirt can be found.
Minimum installation requirements:
Choose an area which is clean and dry, free from dust and protected against atmospheric disturbances.
The load-bearing zone must be even, horizontal and able to bear the weight of the dryer.
Minimum ambient temperature +34°F (+1°C).
Maximum ambient temperature +113°F (+45°C).
Ensure a proper cooling air replacement.
Allow a sufficient clearance on each side of the dryer for proper ventilation and to facilitate maintenance
operations. The dryer does not require attachment to the floor surface.
Do not obstruct the ventilation grille (not even partially).
Prevent any recirculation of the outgoing cooling air.
Protect the dryer against draughts.
Installation
14 DRYPOINT® RA VSD 800-2500
8.2 Installation layout
1 Air compressor
2 Aftercooler
3 Condensate separator
4 Pre-Filter
5 By-pass group
6 Dryer
7 Compressed air tank
8 Final filter
9 Condensate drain
Dryer’s compressor and fan (air cooled) speed are adjusted to adapt power consumption to the dryer load. Although
system is quite reactive, it cannot adapt its setting immediately to sudden load variation leading to dewpoint
spikes/fluctuations.
To avoid this behaviour it is recommended to install the dryer in systems where load variations happens but are
damped. Compressed air receivers can be used as dampers: installed before the dryer if compressors capacity varies
suddenly and frequently, after the dryer if the air consumption variation is very wide, frequent and sudden or both to
have the best load variation dampness.
Compressed air tanks can be installed as capacity dampers: installed before the dryer (Type A) if the compressor
capacity varies suddenly and often, after the dryer (Type B) if the change in air consumption is very large, frequent and
sudden or both to have the improved dampening of the flow variation.
Do not obstruct the ventilation grille (not even partially).
Prevent any recirculation of the outgoing cooling air.
Protect the dryer against draughts.
Note!
Contaminated intake air!
In normal condition (comply with ISO 8573.1 class 2.-3) we recommend the installation of C-Filters (e. g.
CLEARPOINT S040CWT) upstream to the dryer.
In case the intake air is strongly contaminated (ISO 8573.1 class 5.-4 or poorer quality), we recommend
the installation of a fine filter (e.g. CLEARPOINT S040FWT) in order to guarantee an optimal thermal
transfer in the heat exchanger. Strongly contaminated compressed air leads to the concentration of oil,
creating an oil layer that interrupts the thermal transfer and could clog the heat exchanger / filter.
2
2
1
IN
OUT
7
- A -
- B -
1
7
6
IN
OUT
5
9
8
9
4
9
3
9
9 9
34
9
9
8
6
5
Installation
DRYPOINT® RA VSD 800-2500 15
8.3 Correction factors
Correction factor for operatin
g
pressure modifications:
Inlet air pressure psi
g
60 80 100 120 140 160 180 203
bar
g
4 5.5 7 8 10 11 12 14
Factor
(
F1
)
0.79 0.91 1.00 1.07 1.13 1.18 1.23 1.27
Correction factor for ambient temperature modifications
(
Air-Cooled
)
:
A
mbient temperature ºF 80 90 95 100 105 110 115
ºC 27 32 35 38 40 43 45
Factor
(
F2
)
1.11 1.09 1.06 1.00 0.94 0.87 0.78
Correction factor for inlet air temperature modifications:
A
ir temperature ºF 90 100 110 122 130 140 150 158
ºC 32 38 43 50 55 60 65 70
Factor
(
F3
)
1.16 1.00 0.82 0.68 0.61 0.52 0.45 0.40
Correction factor for DewPoint modifications:
DewPoint ºF 38 41 45 50
ºC 3 5 7 10
Factor
(
F4
)
1.00 1.08 1.20 1.36
Calculation of the actual air throughput:
Actual air throughput = air throughput acc. to planning x factor (F1) x factor (F2) x factor (F3) x factor (F4)
Example:
The DRYPOINT RA VSD 800 has a planned nominal capacity of 800 scfm (1358 m³/h). The highest
achievable air mass under the followin
g
operatin
g
conditions is:
Air inlet pressure = 120 psig (8 barg)
Ambient temperature = 115°F (45°C)
Air inlet temperature = 122°F (50°C)
Pressure dew point = 50°F (10°C)
Factor (F1) = 1.07
Factor (F2) = 0.78
Factor (F3) = 0.68
Factor (F4) = 1.36
Every function parameter corresponds to a numerical factor which, multiplied by the planned nominal capacity, determines the
followin
g
:
Actual air throughput = 800 x 1.07 x 0.78 x 0.68 x 1.36 = 617 scfm (1048 m³/h)
617 scfm (1048 m³/h) is the maximum air mass of the dryer under the aforementioned operating conditions.
Selection of the best suitable model in accordance with the operating conditions:
Air throughput acc. to planning = Required air throughput
factor (F1) x factor (F2) x factor (F3) x factor (F4)
Example:
The following operating parameters are known:
Required air mass = 750 scfm (1274 m3/h)
Air inlet pressure = 120 psig (8 barg)
Ambient temperature = 115°F (45°C)
Air inlet temperature = 122°F (50°C)
Pressure dew point = 50°F (10°C)
Factor (F1) = 1.07
Factor (F2) = 0.78
Factor (F3) = 0.68
Factor (F4) = 1.36
To find out the correct dryer version, the required air mass must be divided by the correction factors of the parameters
indicated above:
Air throughput acc. to planning= 750 = 972 scfm (1652 m³/h)
1.07 x 0.78 x 0.68 x 1.36
The suitable model for these requirements is DRYPOINT RA VSD 1000 (with a specif. nominal capacity of 1000 scfm [1698
m³/h]
)
.
Installation
16 DRYPOINT® RA VSD 800-2500
8.4 Connection to the compressed air system
Danger!
Compressed air!
All works must only be carried out by qualified skilled personnel.
Never work on compressed-air systems which are under pressure.
The operator or the user must ensure that the dryer is never operated with a pressure exceeding the maximum
pressure value indicated on the name plate. Exceeding the maximum operating pressure can be dangerous for
the operator but also for the device.
The air temperature and the air flow at the inlet of the dryer must lie within the limit values indicated on the name plate. The
connecting lines must be free from dust, iron rust, shards and other contaminations and correspond to the flow rate of the dryer.
Should air with a very high temperature be treated, the installation of an aftercooler may be necessary. For the implementation
of maintenance works, the installation of a bypass system is recommended.
The dryer was designed in such a manner that vibrations that may occur during operation are limited. Therefore, it is advisable
to employ connecting lines (flexible hoses, vibration-inhibiting fittings etc.) which protect the dryer against possible vibrations in
the pipework.
Note!
Contaminated intake air!
In normal condition (comply with ISO 8573.1 class 2.-3) we recommend the installation of C-Filters (e. g.
CLEARPOINT S040CWT) upstream to the dryer.
In case the intake air is strongly contaminated (ISO 8573.1 class 5.-4 or poorer quality), we recommend the
installation of a fine filter (e.g. CLEARPOINT S040FWT) in order to guarantee an optimal thermal transfer in the
heat exchanger. Strongly contaminated compressed air leads to the concentration of oil, creating an oil layer that
interrupts the thermal transfer and could clo
g
the heat exchan
g
er / filter.
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8.4.1 Inlet / outlet flanged air connections (only RA VSD 800-1250)
Inlet / oulet flanged air connections and clamp joints are located inside the box under the dryer (see Fig.1).
Assembly flange (B) and clamp joint (A) as shown in Fig.2
Pay particular attention in not damaging the gasket of clamp joint (A).
Fully tighten the two bolts of clamp joint (see Fig.3)
Fig.1 Fig.2
Fig.3
LGT0056
LGT0057
B
A
Installation
DRYPOINT® RA VSD 800-2500 17
8.5 Connection to the cooling water network (Water-Cooled)
DANGER!
Compressed air and unqualified personnel!
All works must only be carried out by qualified skilled personnel.
Never work on compressed-air systems which are under pressure.
The user must ensure that the dryer is never operated with a pressure exceeding the nominal values.
Possible overpressure can be dangerous for the operator but also for the device.
The temperature and the amount of cooling water need to correspond to the limit values indicated on the name plate. The
cross-section of the connecting lines, which should preferably be flexible, must be free from dust, iron rust, shards and other
contaminations. We recommend employing connecting lines (flexible hoses, vibration-inhibiting fittings etc.) which protect the
dryer against possible vibrations in the pipework.
Note!
Contaminated intake water!
In the event that the intake water is strongly contaminated we recommend the additional installation of a prefilter
(500 micron), to avoid clogging of the heat exchanger.
8.6 Minimum cooling water requirements (referred to Tube & Shell condenser)
Temperature +15°C…+30°C (+59°F…+86°F) *1
Pressure 3…10 barg (43.5…145 psig) *2
Delivery pressure > 3 bar (43.5 psi) *2 *3
PH 7.5…9.0
Total hardness 6.0…15 °dH
Conductivity 10…1000 μS/cm
Sulphates (SO42-) < 100 mg/l or ppm
Hydrogen carbonate / Sulphates (HCO3 / SO42-) > 1.0 mg/l or ppm
Ammonia (NH3) < 0.5 mg/l or ppm
Manganous ion (Mn2+) < 0.05 mg/l or ppm
Chlorides (Cl-) < 50 mg/l or ppm
Free chlorine (Cl2) < 0.5 mg/l or ppm
Oxygen content < 0.1 mg/l or ppm
Carbon dioxide (CO2) < 50 mg/l or ppm
Hydrogen sulphide (H2S) < 0.05 mg/l or ppm
Phosphate (PO43-) < 2 mg/l or ppm
Ferric ion (Fe3+) < 0.5 mg/l or ppm
*1 Other temperatures upon request – check the data on the name plate.
*2 Other pressures upon request – check the data on the name plate.
*3 Pressure difference at the water connection of the dryer at maximum water flow. Other prevalences upon request.
CAUTION!
During the piping of the dryer, the inlet and outlet connections need to be supported as is shown in the
illustration.
Non-observance will cause damage.
Installation
18 DRYPOINT® RA VSD 800-2500
8.7 Electrical connections
Danger!
Supply voltage!
The connection to the electric mains should only be carried out by qualified skilled personnel and must
correspond to the le
g
al provisions in force in
y
our re
g
ion.
Before connecting the unit to the electrical supply, verify the data nameplate for the proper electrical information.
Voltage tolerance is +/- 10%.
The installer is responsible for supplying and installing the power cable. Be sure to provide the proper fuses or
breakers based on the data information located on the nameplate.
RA VSD 800-1250 RA VSD 1500-2500
A residual-current device (RCD) with In =0.3A Class B
is suggested. The cross section of the power supply
cables must comply with the consumption of the dryer,
while keeping into account also the ambient
temperature, the conditions of the mains installation, the
length of the cables, and the requirements enforced by
the local Power Provider.
Compressor and fan(s) proper rotation direction are
managed automatically by the drivers.
It is not necessary to observe the phases sequence
when connecting the power cable to the main switch.
Danger!
Supply voltage and missing earth connection!
Important: ensure that the plant is connected to earth.
Do not use plug adapters at the power plug.
Possible replacement of the power plu
g
must onl
y
be carried out b
y
a qualified electrician.
Note!
This dryer is not suitable for employment on IT-systems.
This dryer is not suitable for employment on grounded-delta systems
Start-up
DRYPOINT® RA VSD 800-2500 19
8.8 Condensate drain
Danger!
Compressed air and condensate under pressure!
The condensate is discharged at system pressure.
The drain pipe needs to be secured.
Never direct the condensate drain pipe at persons.
The dryer comes already fitted with an electronic condensate drainer.
Connect and properly fasten the condensate drain to a collecting plant or container.
The drain cannot be connected to pressurized systems.
Do not discharge the condensate into the environment.
The condensate accumulating in the dryer contains oil particles which were released into the air by the
compressor.
Dispose of the condensate in accordance with the local provisions.
It is advisable to install a water-oil separator, to which the total amount of condensate from the compressors,
dryers, tanks, filters etc. is supplied.
We recommend ÖWAMAT oil-water separators for dispersed compressor condensate and BEKOSPLIT
emulsion-splittin
g
plants for emulsified condensate.
9 Start-up
9.1 Preliminary operation
Note!
Exceeding of the operating parameters!
Ensure that the operating parameters comply with the nominal values indicated on the name plate of the dryer
(voltage, frequency, air pressure, air temperature, ambient temperature etc.).
Prior to delivery, this dryer was thoroughly tested, packed and checked. Please verify the soundness of the dryer during the
initial start-up and check the perfect functioning during the first operating hours.
The initial start-up must be carried out by qualified personnel.
During the installation and operation of this device, all national regulations regarding electronics and any other
federal and state ordinances, as well as local provisions, need to be adhered to.
The operator and the user must ensure that the dryer is not operated without panels.
Start-up
20 DRYPOINT® RA VSD 800-2500
9.2 First start-up
Note!
The number of starts/stops by pressing the button must be limited to six per hour.
Irreparable damage can be caused by starting up the device too often.
The method below should be applied during the first start-up, after longer downtimes or subsequent to
maintenance works.
The start-up must be carried out by certified skilled personnel.
Processing sequence (observe Section 11.1 "Control panel")
Ensure that all steps of the "Installation" chapter have been carried out.
Ensure that the connection to the compressed-air system is in accordance with the provisions and that the lines are fixed
and supported properly.
Ensure that the condensate drain pipe is fixed in accordance with the provisions and that it is connected with a collection
system or a container.
Ensure that the bypass system (if installed) is open and that the dryer is isolated.
Ensure that the manual valve of the condensate outlet is open.
Remove any packaging material and other items which may block the space around the dryer.
Switch on the main switch.
Switch on the main switch on the control panel (pos. 1).
Wait about 45 seconds the initialization of the electronic controller DMC55.
Select the desired language and the current date and time
Wait at least two hours before starting the dryer (the crankcase heater of the compressor needs to heat up
the compressor oil).
Keep pressed the button at least 3 seconds, the dryer starts and the display shows .
If the temperature shown on the display is sufficiently high, verify that the refrigerating compressor starts within a
few minutes. NOTE! – With low temperatures, the refrigerating compressor will remain OFF.
Ensure that the cooling-water flow and the temperature are in accordance with the provisions (water-cooled).
Ensure the effective operation of the fan, watching its speed percentage on the display (air-cooled).
Wait until the dryer stabilises at the preset value.
Slowly open the air inlet valve.
Slowly open the air outlet valve.
Slowly close the central bypass valve of the system (if installed).
Check the pipes for air leakage.
Ensure that the drain discharges at regular intervals – wait for the first interventions.
Note!
A dew point between 0°C and +10°C (32°F and 50°F) displayed on the electronic controller is considered to be
correct according to the possible operating conditions (flow rate, air inlet temperature, ambient temperature etc.).
The electronic controller DMC55 adjusts compressor and fan(s) speed according to thermal load applied to the dryer.
At very low or no load conditions, compressor is switched ON and OFF by the DMC55 to keep the temperature of the
heat exchanger cold, allowing a consistent additional energy saving. The dryer needs to be switched on during the
entire compressed-air usage time, even if the compressed-air compressor works periodically
Note!
Compressor and fan(s) proper rotation direction are managed automatically by the inverters.
It is not necessary to observe the phases sequence when connecting the power cable to the main switch.
This manual suits for next models
6
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