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Dantherm DCU22-2000DH, Service Manual

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Dantherm DCU22-2000DH Service Manual Download Page 34

 

                                                                                                                                                                           

  

 

 

34

 of 53 

Replacement of the external AC fan 

The purpose of the external AC fan is to surplus heat from the condenser when the active cooling is 
active.  

When to replace 

The external fan only needs to be replaced when it is faulty. 

 

Before you start make sure that you have the following available: 

A Torx 20 screwdriver 

A 7# spanner 

A new external AC fan, see “spare parts” for details 

Caution 

Only trained or certified technicians are allowed to carry out the replacement of parts. Remember that 
all power to the unit must be switched off or disconnected before start any service work on the unit. 

Illustration 

This illustrates where the fan is placed. 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Front Cover 

External Fan 

Summary of Contents for DCU22-2000DH

Page 1: ...S Su uZ Zh ho ou u N Ne ew w D Di is st tr ri ic ct t J Ji ia an ng gS Su u C Ch hi in na a 2 21 15 51 12 29 9 C Ch hi in na a P Ph ho on ne e 8 86 6 0 05 51 12 2 6 66 66 67 78 85 50 00 0 F Fa ax x 8...

Page 2: ...istory Revision Description Author Date A First design Roge Wang 2009 04 01 Release Roge Wang 2009 06 02 Updated Roge Wang 2009 12 03 Updated Tom sun 2010 06 04 Weight and sheet metal materials change...

Page 3: ...MPONENTS 14 CONTROL LOGIC 14 HEATER KIT 15 FILTER BLOCKAGE DETECTION KIT 15 HUMIDITY DETECTOR 15 4 ERROR HANDLING 16 INTRODUCTION 16 WARNINGS 16 FAULTS 16 ALARMS 17 SENSOR FAILURE HANDLING 17 5 DESCRI...

Page 4: ...R MOTOR 39 REPLACEMENT OF THE HEATER OPTION 40 REPLACEMENT OF PRESSURE SWITCH OPTION 42 REPLACEMENT OF HUMIDITY DETECTOR OPTION 43 9 SPECIFICATIONS 45 ELECTRICAL DATA 45 PERFORMANCE DATA 46 CABINET DA...

Page 5: ...g to the in structions in this manual Storage If the unit is stored in a warehouse the following conditions apply 1 Temperature range between 40 to 85 2 Operating and storage range 5 95 RH 3 The unit...

Page 6: ...Area EN 292 Machine Safety EN 60 950 Electrical Machine Safety EN 50 082 1 Immunity EN 50 081 2 Emission EN 50 106 Safety for Electrical Machinery GR 487 CORE According to Belcore shock GR 63 CORE Ac...

Page 7: ...ement of electronic enclosures The unit contains fans compressor as well as an active cooling section Internal fan and damper motor as well as a free cooling section This en sures that this unit will...

Page 8: ...good representation of the enclosure temperature 1 Damper 2 Internal DC fan 3 Compressor 4 Condenser fan 5 Filter blockage detection kit option 6 Humidity detector option 7 Heater kit option Temperatu...

Page 9: ...ter is operated it s an option and the Link LED when and ten minutes after valid communication via the RS485 connection have been in pro gress 3 The red LED Alarm status will only be lit in case of a...

Page 10: ...ondenser temperature reached 60 the external AC fan will run at full speed If temperature drops 3 57 the speed returns to medium 3 Compressor When the return air temperature reaches the compressor set...

Page 11: ...r temperature is below 11 Return air temperature is below 18 For Emergency Cooling Mode the damper will only open when AC mains failure or Compressor failure In Emergency Cooling Mode the damper will...

Page 12: ...7 57 Condenser sensor Condenser fan speed decreased to medium around 2250RPM Condenser fan speed increased to medium around 2250RPM Condenser sensor 50 50 Condenser sensor Condenser sensor 47 47 Conde...

Page 13: ...opens after compres sor stop effi cient ambient temperature Return sensor 18 18 Return sensor Damper close unconditionally Damper opens efficient ambient tempera ture and return tempera ture above 18...

Page 14: ...described in Graphic illustration The compressor fault timer must have returned to zero before the emergency cooling situation will end 2 Loss of AC mains The following steps are taken upon loss of AC...

Page 15: ...ents Filter blockage detection kit options The filter blockage detection kit is detected whether the air filter is blocked by the dust or other things The default set point is 220Pa when the pressure...

Page 16: ...an 18 below the set point 3 The return air temperature is 5 below the heater set point 2 above this temp the warning will be cleared 4 The condenser temperature has been above 75 The warning disappear...

Page 17: ...m is above 70 off below 60 A fast flashing fail LED app 2 Hz 2 per second is indicating an alarm Sensor failure handling Temperature measurements are performed in the range from 40 to 99 Readings outs...

Page 18: ...n for less than 10 minutes ago Alarm status Red LED with the following function Permanent on is Warning Flashing slow once every 2 second is Fault Flashing fast is Alarm 2 per second Occupied Do not u...

Page 19: ...on of the fuses switches and the jumpers No Part Function 1 Dipswitches Selecting unit No 2 Fuse 6 3A TH Heater Compressor 3 Fuse 6 3A TH AC mains 4 Fuse 6 3A TH Internal DC fan 1 5 Fuse 6 3A TH Inter...

Page 20: ...emale RS485 parallel jack s on the front panel can be used for DanLink telemetry option computer tests or DanView display The connections are shown in this table Pin No Function 1 Logic GND 2 Data B 3...

Page 21: ...Pin No Row Z Row D 4 Internal fan 2 6 Not used 8 Internal fan 1 10 External fan 1 12 Not used 14 External fan 2 16 Auto transformer 230V 18 Heater 20 Auto transformer 180V 22 Compressor crankcase hea...

Page 22: ...rent sensor compressor Current sensor heater 12 GND Alarm relay NC Alarm relay common 14 0 VDC internal DC fan PWM output internal DC fan 24 48 VDC internal DC fan 16 Hot spot sensor Return sensor Con...

Page 23: ...ounting and connecting Introduction This section is describes in the details how to mount and connect the unit Unpacking This unit is delivered in a wooden box wrapped in a plastic bag Tools Hammer Cu...

Page 24: ...t effectively it needs make a hole and set screws or mounting holes on the telecom cabinet s door with following dimensions All the measurements are made in millimetres The unit must keep in an uprigh...

Page 25: ...eakage like cable holes gap between the door and the cabinet body etc when the door is closed During repairing and maintenance you are adviced to shut down the air con otherwise it will probably cause...

Page 26: ...marked at the near of product s power terminal 4 Connect the male plug to female plug on the product DC supply 48V 20 It is very important to make sure that the DC supply I connected to the right pola...

Page 27: ...termine the maintenance frequency Normally the period of preventive mainte nance should not surpass six months In case of very bad air quality the period of two months need be considered Conditions of...

Page 28: ...ul clean up the dust Especially at air ducts condenser and evaporator fan Con denser and evaporator coil Then use pressur ized air brush to remove loosen dust that the vacuum cleaner could not remove...

Page 29: ...the specified temperature range Please install the unit and connect power The cleaning and maintenance process is finished Check list Yes No Are the fans and the compressor clean and free of corrosion...

Page 30: ...ntroduction This is parts covered in this manual 1 Air filter 2 Internal DC fan 3 External AC fan 4 Control board 5 Auto transformer 6 Damper motor 7 Heater kit option 8 Filter blockage detection kit...

Page 31: ...2 combine unit with emergency cooling mode The filter must be replaced with a maximum of 1 2 year interval Before you start Make sure that you have the following available before you start A Torx 20 s...

Page 32: ...rts for details Caution Only trained or certified technicians are allowed to carry out the replacement of parts Remember that all power to the unit must be switched off or disconnected before start an...

Page 33: ...cover 5 Unscrew the 13 M4 torx screws on the upside cover and then re move the cover 6 Unplug the fan from the power supply 7 Unscrew the 6 torx screws which fix the internal fan box then take the bo...

Page 34: ...e you start make sure that you have the following available A Torx 20 screwdriver A 7 spanner A new external AC fan see spare parts for details Caution Only trained or certified technicians are allowe...

Page 35: ...control board is microprocessor equipped PCB with input outputs to all the electrical parts of the unit It controls the fans compressor etc based on inputs from the 4 sensors placed in the unit When...

Page 36: ...astic tabs out and press them away from the centre of control board the control board now can be removed 5 Check if the E PROM is the right version before mounting it on the new control board Compare...

Page 37: ...e sure that you have the following available A Torx 20 screwdriver A 7 spanner A new auto transformer see spare parts for details Caution Only trained or certified technicians are allowed to carry out...

Page 38: ...the connectors Unscrew the 4 M4 nuts which fix the auto transformer bracket 5 Remove the auto transformer with its bracket 6 Exchange the auto transformer and mount it 7 Mount the back down cover agai...

Page 39: ...ove at all Before you start Before you start make sure that you have the following available A Torx 20 screwdriver A 7 spanner A new damper motor see spare parts for details Caution Only trained or ce...

Page 40: ...e 2 M4 nuts fixed the damper motor and exchange it 9 Mounting and connect the new damper motor by the step 2 to 8 in re verse order 10 Switch on power Replacement of the heater kit option The heater e...

Page 41: ...the unit 2 Unscrews the 12 torx screws holding the back cover in place and re move them 3 Unplug the heater connectors 4 Unscrew 2 nuts which fixed the heater on its bracket 5 Use the new heater repl...

Page 42: ...Pa Before you start Before you start make sure that you have the following available A Torx 20 screwdriver A 6 spanner A 7 spanner A new filter blockage detection kit see spare parts for details Cauti...

Page 43: ...acement of humidity detector option The humidity detector is to detect the ambient humidity to prevent the high humidity air come in the cabinet when the damper is open When to replace The humidity de...

Page 44: ...ct mesh grid 3 Use a straight screwdriver to take off the detector s white cover 4 Unscrew the 2 M4 nuts which fixed the humidity detector on the sheet metal 5 Put out the humidity detector and then r...

Page 45: ...C 35 C Specification Value Unit Description 220 230 10 VAC One phase the compressor can start only in the normal AC voltage range Voltage supply 48 20 VDC Frequency 50 60 1 Hz Nominal AC 5 2 8 0 A Mea...

Page 46: ...st Condition Ambi ent Return 10 30 Refrigerant 1000 g R134A Internal airflow 755 M 3 h Active cooling mode External airflow 860 M 3 h External fan running at H speed Internal airflow 744 M 3 h Free co...

Page 47: ...0W Power Free cooling 2000W Power Free cooling 2000W Power 950 1050 1150 1250 1350 1450 1550 1650 1750 25 30 35 40 45 50 55 internal temperature P o w e r Ext 30 Ext 35 Ext 40 Ext 45 Ext 50 Ext 55 Fre...

Page 48: ...d cooling technicians with the necessary equipment may do this The technicians should then pass the refrigerant to the local authorities for decomposition The compressor contains oil Precautions must...

Page 49: ...spare part number s to use when ordering replacement spare parts Dantherm part No Description Picture 213506 Air filter 040182 Internal DC fan 182189 182361 External AC fan 182361 anti salt fog 517966...

Page 50: ...50 of 53 Dantherm part No Description Picture 182207 800W heater option 215096 Filter blockage detection kit option 214614 Humidity detector option...

Page 51: ...51 of 53 12 Appendix Dimension...

Page 52: ...52 of 53 Wiring diagram...

Page 53: ...following information s prepared before making the call Your name Company name 1 Country Site Location 2 Phone No E mail if possible 3 Unit model Unit part No 3 Unit serial No 4 Description of problem...

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