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Technical description 

22 

 

DRS30-DRS125 

11.4  Refrigerating compressor 

The employed refrigerating compressors are constructed by leading manufacturers. The hermetically sealed construction 
is absolutely gastight. The integrated safeguard protects the compressor against overheating and excess current. The 
protection is automatically reset as soon as the nominal conditions are reached again. 

 

11.5  Condenser 

The condenser is the component in which the gas coming from the compressor is cooled down, condensed and liquefied. 
Under no circumstances must the temperature of the ambient air exceed the nominal values. It is also important that the 
condenser unit is kept free from dust and other impurities. 

 

11.6  Filter dryer 

Despite  controlled  vacuuming,  traces  of  moisture  can  accumulate  in  the  refrigeration  cycle.  The  filter  dryer  serves  to 
absorb this moisture and to bond it. 

 

11.7  Capillary tube 

The capillary tube is a copper tube with a reduced diameter which is located between the condenser and the evaporator, 
serving  as  a  restrictor  to reduce  the  pressure  of  the  refrigerant.  The  pressure  reduction  serves  to  reach  an  optimum 
temperature  inside  of  the  evaporator.  The  lower  the  outlet  pressure  at  the  capillary  tube,  the  lower  the  evaporation 
temperature.  

The length and the inner diameter of the capillary tube are exactly dimensioned to ensure the performance of the dryer. 
Settings or maintenance works are not required. 

 

11.8  Aluminium heat exchanger 

The  heat  exchanger  module  consists  of  an  air/air  heat  exchanger,  an  air/refrigerant  heat  exchanger,  and  of  a  high-
performance separator. The compressed air flows top-down through the heat exchanger. The large cross-sections of the 
flow passages cause low flow rates and low compressed-air losses. In the air/air heat exchanger, the heat exchange is 
effected  in  a  reverse  current.  This  guarantees  maximum  heat  transfer.  The  heat  transfer  in  the  air/refrigerant  heat 
exchanger also takes place in a reverse current. This allows full evaporation of the refrigerant. The high-performance 
separator ensures almost complete separation of the condensate. Maintenance of the high-performance separator is not 
required. 

 

11.9  Hot-gas bypass valve 

At partial  load, the valve directly returns  a part of the  hot  gas to the suction  line  of the refrigerating compressor. The 
evaporation temperature and the evaporation pressure remain constant. 

 

 

ADJUSTMENT 

The hot gas by-pass valve is adjusted during the manufacturing testing phase. 
As a rule no adjustment is required; anyway if it is necessary the operation must 
be carried out by an experienced refrigerating engineer. 

WARNING

  

the use of ¼” Schrader service valves must be justified by a real malfunction of 
the refrigerating  system. Each time a pressure gauge is connected, a part of 
refrigerant is exhausted. 
Without  compressed  air  flow  through  the  dryer,  rotate  the  adjusting  screw 
(position A on the drawing) until the following value is reached: 

Hot gas setting :  
R134.a pressure 29.0 psig (+ 1.45 / -0 psi) [2.0 barg (+0.1 / -0 bar)] 

 

 

 

 

 

 

A

4 mm

5/32 in.

+

-

VLY0

001

Содержание DRS30

Страница 1: ...Instructions for installation and operation Compressed air refrigeration dryer DRS30 DRS125 EN English...

Страница 2: ...Please read these installation and operating instructions carefully before mounting and starting up the DRS30 DRS125 and follow our directions Perfect functioning of the DRS30 DRS125 and thus reliabl...

Страница 3: ...Filter dryer 22 11 7 Capillary tube 22 11 8 Aluminium heat exchanger 22 11 9 Hot gas bypass valve 22 11 10 Electronic instrument DMC35 23 11 10 1 How to switch on the dryer 23 11 10 2 How to switch of...

Страница 4: ...lectric diagrams 39 13 6 1 Electric diagrams list of components 39 13 6 2 Electric diagram DRS 30 100 40 13 6 3 Electric diagram DRS 125 41 Pos 1 Beko Technische Dokum entati on berschriften 1 Sicherh...

Страница 5: ...nnel prior to installation start up and maintenance The operating instructions must be accessible at all times at the place of application of the DRS30 DRS125 compressed air refrigeration dryer In add...

Страница 6: ...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 maintena...

Страница 7: ...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 com...

Страница 8: ...cident 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 ser...

Страница 9: ...rigerant 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...

Страница 10: ...83616103770_6 doc 4009os 9 Beko Technische D okumentati on Sicherheit Zusatz Sicher hei tshi nw eise BM 33 0 m od_1231926887620_6 doc 12829s 10 Beko Technische D okumentati on Sicher heit Vorsicht Feh...

Страница 11: ...DRS30 DRS125 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...

Страница 12: ...ting 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 Fai...

Страница 13: ...throughput rate of the compressor The storage capacity of the tank must be dimensioned in such a way that a possible short term high air demand peak air consumption can be compensated Do not obstruct...

Страница 14: ...ient temperature 90 F 32 C Inlet air temperature 110 F 43 C Factor F1 1 00 Factor F2 1 09 Factor F3 0 81 Each item of data has a corresponding numerical factor which multiplied by the design air flow...

Страница 15: ...e pipework Ende der St ckliste Note Contaminated intake air In the event that the intake air is strongly contaminated ISO 8573 1 class 3 3 or poorer quality we recommend the additional installation of...

Страница 16: ...mpressors dryers tanks filters etc is supplied We recommend an oil water separator for dispersed compressor condensate and an emulsion splitting plant for emulsified condensate 9 Start up 9 1 Prelimin...

Страница 17: ...system Ensure that the manual valve of the condensate drainage cycle is open Remove any packaging material and other items which may block the space around the dryer Establish the mains connection pl...

Страница 18: ...int temperature indicated on the electronic control unit is stable and whether or not the condensate is drained off at regular intervals Establish the compressed air supply During the operation the re...

Страница 19: ...Technical data DRS30 DRS125 19 10 Technical data...

Страница 20: ...it is reheated to up to 15 F 8 C below the inlet temperature when leaving the dryer Refrigeration cycle The refrigerant is conducted through the compressor and reaches a condenser under high pressure...

Страница 21: ...e separator 12 2 Temperature probe BT2 Fan control 2 Not installed 13 Condensate drain service valve 3 Not installed 14 Condensate drain strainer 4 Not installed 15 Condensate drain solenoid valve 6 C...

Страница 22: ...ot required 11 8 Aluminium heat exchanger The heat exchanger module consists of an air air heat exchanger an air refrigerant heat exchanger and of a high performance separator The compressed air flows...

Страница 23: ...one or more service warnings alarms are active Led shows that condensate drain solenoid valve is ON Led shows that condenser fan is ON The condensate drain test is always active using the button 11 10...

Страница 24: ...oint indication bar are light up The number of leds lit define the 2nd digit of hour counter ie n 3 leds lit 2nd digit 3 Press button led is lit and a certain numbers of leds of dew point indication b...

Страница 25: ...are parts and dismantling chapters leads to the expiration of the guarantee Improper maintenance may result in dangerous situations for the personnel and or the device Danger Supply voltage Contact wi...

Страница 26: ...lification 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 additi...

Страница 27: ...c instrument is faulty replace it There is a leak in the refrigerant circuit contact a refrigeration engineer If the fan still doesn t work replace it DewPoint too high The dryer doesn t start see spe...

Страница 28: ...ove and clean it Try to remove the electric connector on the solenoid valve if drain stops verify the electric wiring or the electronic instrument is faulty replace it Water within the line The dryer...

Страница 29: ...n case of abnormal operation so avoiding to wait for the spares delivery In case of failure of other parts for example inside the refrigerating circuit the replacement must be worked out by a refriger...

Страница 30: ...cal formula MIK GWP R134a HFC CH2FCF3 1000 ppm 1430 R407C HFC R32 125 134a 23 25 52 CHF2CF3 CH2F2 CH2FCF3 1000 ppm 1773 85 12 5 Dismantling the dryer When the dryer is dismantled all parts and operati...

Страница 31: ...Appendices DRS30 DRS125 31 13 Appendices 13 1 Dryer dimensions DRS 30 40...

Страница 32: ...Appendices 32 DRS30 DRS125 13 2 Dryer dimensions DRS 60 80...

Страница 33: ...Appendices DRS30 DRS125 33 13 3 Dryer dimensions DRS 100...

Страница 34: ...Appendices 34 DRS30 DRS125 13 4 Dryer dimensions DRS 125...

Страница 35: ...ot gas bypass valve 37 Pressure transducer 8 Condenser 51 Front panel 9 Condenser fan 52 Back plate 9 1 Motor 53 Right sidewall 9 2 Blade 54 Left sidewall 9 3 Grid 55 Cover 10 Filter dryer 56 Base pla...

Страница 36: ...Appendices 36 DRS30 DRS125 13 5 2 Exploded diagram DRS 30 80...

Страница 37: ...Appendices DRS30 DRS125 37 13 5 3 Exploded diagram DRS 100...

Страница 38: ...Appendices 38 DRS30 DRS125 13 5 4 Exploded diagram DRS 125...

Страница 39: ...f installed DMC35 DMC35 electronic instrument air dryer control BT1 T1 Temperature probe dew point BT2 T2 Temperature probe fan control BP2 P2 Pressure transducer fan control S1 ON OFF switch NT1 Only...

Страница 40: ...Appendices 40 DRS30 DRS125 13 6 2 Electric diagram DRS 30 100...

Страница 41: ...Appendices DRS30 DRS125 41 13 6 3 Electric diagram DRS 125...

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Страница 44: ...Contact Information __________________________________________________________ Kaishan USA LLC 15445 Industrial Park Dr Loxely AL 36551 251 257 0586 www KaishanUSA com 74MD0021C0 EN_00...

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