1、 Montage-, Installations- und BedienungsanleitungAssembly and operating instructionsManuel dinstallation et de maintenanceMontage- en bedieningshandleidingMontage- och hanteringsanvisningIstruzioni di montaggioInstrucciones de montajeRSchaltschrank-KhlgertCooling unitClimatiseurKoelaggregaatKylaggre
2、gatCondizionatori perarmadi di comandoRefrigeradorpara armariosSK 3302.xxxSK 3302.3xxSK 3303.xxxSK 3304.xxxSK 3305.xxxSK 3328.xxxSK 3329.xxxSK 3332.xxxSK 3361.xxxSK 3366.xxxSK 3377.xxxGBContents1 Notes on documentation. . . . . . . . . . 41.1 Associated documents. . . . . . . . . . . . . . . . . 41.
3、2 CE labelling . . . . . . . . . . . . . . . . . . . . . . . . . . 41.3 Retention of documents . . . . . . . . . . . . . . . . 41.4 Symbols used . . . . . . . . . . . . . . . . . . . . . . . . 45 Commissioning . . . . . . . . . . . . . . . . 216 Operation . . . . . . . . . . . . . . . . . . . . . 22
4、6.1 Control using the Basic controller . . . . . . 226.1.1 Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . .222 Safety notes . . . . . . . . . . . . . . . . . . . . 43 Device description. . . . . . . . . . . . . . . 53.1 Functional description . . . . . . . . . . . . . . . . . 53.1.
5、1 How it works . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.2 Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53.1.3 Bus mode (Comfort controller only) . . . . . . . . 53.1.4 Safety equipment . . . . . . . . . . . . . . . . . . . . . . 63.1.5 Condensation . . . . . .
6、. . . . . . . . . . . . . . . . . . . 63.1.6 Filter mats . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63.1.7 Door limit switch . . . . . . . . . . . . . . . . . . . . . . . 63.1.8 Additional interface X3 . . . . . . . . . . . . . . . . . . 73.2 Proper usage . . . . . . . . . . . . . . . .
7、 . . . . . . . . . 73.3 Scope of supply . . . . . . . . . . . . . . . . . . . . . . 74 Assembly and connection . . . . . . . . 74.1 Choosing an installation site . . . . . . . . . . . . 74.2 Assembly instructions . . . . . . . . . . . . . . . . . 74.2.1 General . . . . . . . . . . . . . . . . . . .
8、. . . . . . . . . . . 74.2.2 Layout of the electronic components in the enclosure. . . . . . . . . . . . . . . . . . . . . . . . 84.3 Fitting the cooling unit . . . . . . . . . . . . . . . . . 84.3.1 Cutting out the enclosure . . . . . . . . . . . . . . . . 94.3.2 External mounting of the cooling un
9、it . . . . . . . 94.3.3 Partial internal mounting of the cooling unit . . 94.3.4 Full internal mounting of the cooling unit . . . 114.4 Connecting the condensate drain . . . . . . . 114.5 Notes on electrical installation . . . . . . . . . 124.5.1 Connection data . . . . . . . . . . . . . . . . . . .
10、 . . . 124.5.2 Overvoltage protection and supply line load . . . . . . . . . . . . . . . . . . . . . . . 124.5.3 Three-phase devices . . . . . . . . . . . . . . . . . . 124.5.4 Door limit switch . . . . . . . . . . . . . . . . . . . . . . 124.5.5 Notes on the flicker standard . . . . . . . . . . . .
11、 124.5.6 Potential equalisation . . . . . . . . . . . . . . . . . . 134.6 Carrying out the electrical installation . . . 134.6.1 Bus connection (only in conjunction with several units with a Comfort controller) . . . . . . . . . . . . . . . 134.6.2 Installing the power supply . . . . . . . . . . . .
12、 . . 144.7 Finalising assembly . . . . . . . . . . . . . . . . . . 214.7.1 Installing the filter media . . . . . . . . . . . . . . . 214.7.2 Fitting the cooling unit. . . . . . . . . . . . . . . . . . 214.7.3 Setting the filter mat monitor (only with Comfort controller) . . . . . . . . . . . . 216.1
13、.2 Operating and error display. . . . . . . . . . . . . .236.1.3 Test mode for the Basic controller . . . . . . . . .236.1.4 Setting the temperature . . . . . . . . . . . . . . . . .246.1.5 Resetting the Basic controller . . . . . . . . . . . .246.2 Control using the Comfort controller . . . . 246.2
14、.1 Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . .246.2.2 Launching test mode . . . . . . . . . . . . . . . . . . .256.2.3 General information about programming. . . .256.2.4 Variable parameters. . . . . . . . . . . . . . . . . . . .266.2.5 Programming overview . . . . . . . . . .
15、 . . . . . . .276.2.6 Defining system messages for evaluation . . . . . . . . . . . . . . . . . . . . . . . . .286.2.7 Setting the master/slave identifier . . . . . . . . .296.2.8 Evaluating system messages. . . . . . . . . . . . .296.2.9 Resetting the Comfort controller . . . . . . . . . .317 Inspe
16、ction and servicing. . . . . . . . . 317.1 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . 317.1.1 Compressed air cleaning SK 3304.xxx/SK 3305.xxx . . . . . . . . . . . . . . .317.1.2 Compressed air cleaning SK 3328.xxx, SK 3329.xxx, SK 3332.xxx . . . . . . . . . . . . . . .358 Stora
17、ge and disposal. . . . . . . . . . . . 409 Technical specifications . . . . . . . . . 4110 List of spare parts . . . . . . . . . . . . . . 4411 Appendix: Cut-out and hole sizes. . . . . . . . . . . 4811.1 Dimensions for external mounting . . . . . . 4811.2 Dimensions for partial internal mounting .
18、. . . . . . . . . . . . . . . . . . . . . . . . . . 4911.3 Dimensions for full internal mounting . . . 50Rittal cooling unit assembly instructions 3GB1 Notes on documentation1 Notes on documentation These assembly instructions are aimed at tradesper-sons who are familiar with assembly and installati
19、on of the cooling unit, and at trained specialists who are familiar with operation of the cooling unit.1.1 Associated documentsThere are two sets of instructions for the unit types described here: Assembly and installation instructions enclosed with the unit in the form of a paper document. Assembly
20、, installation and operating instructions enclosed with the unit in the form of a PDF file (Adobe Acrobat) on CD-ROM.We cannot accept any liability for damages asso-ciated with failure to observe these instructions. Where applicable, the instructions for any acces-sories used shall also apply.1.2 CE
21、 labellingThe declaration of conformity is supplied with the unit as a separate document.1.3 Retention of documentsThese instructions and all associated documents shall constitute an integral part of the product. They must be supplied to the plant operator. The plant operator shall be responsible fo
22、r storage of the documents, to ensure that they are readily available when needed.1.4 Symbols used Please observe the following safety instructions and other notes in this guide:Symbol for an instructed action: The bullet point indicates that you should perform an action.Safety and other instruction
23、s:2 Safety notesPlease observe the following general safety instruc-tions when assembling and operating the unit: Assembly, installation and servicing must only be carried out by properly trained specialists. Screw the enclosure to the floor to prevent it from tipping over when the cooling unit is i
24、nstalled. Do not obstruct the air inlet and air outlet of the cooling unit inside and outside the enclosure (see also section 4.2.2). To ensure problem-free opening and closing of the enclosure door, use a ride-up door roller (refer to the accessories in the Rittal Catalogue). This raises the door s
25、lightly and balances out the weight of the cooling unit, to prevent buckling of the door and associated seal problems. The heat loss of the components installed in the enclosure must not exceed the specific useful cooling output of the cooling unit. When transporting the enclosure with the cooling u
26、nit externally mounted, always use an additional shipping brace to support the cooling unit. The cooling unit must always be transported in an upright position. Only use original spare parts and accessories. Do not make any changes to the cooling unit other than those described in these instructions
27、 or asso-ciated instructions. Risk of burn injuries! For cooling units with auto-matic condensate evaporation, the surface of the thermal element will get very hot during operation, and will remain so for some time afterwards. The mains connector of the cooling unit must only be connected and discon
28、nected with the system de-energised. Connect the pre-fuse specified on the rating plate.Danger!Immediate danger to life and limb!Caution!Potential threat to the product and its environment.Note:Useful information and special features.4 Rittal cooling unit assembly instructions3 Device descriptionGB3
29、 Device description Depending on the model chosen, your cooling unit may vary in appearance from the illustrations con-tained in these instructions. However, the functions are identical in principle.Fig. 1: Device descriptionKey 1 Blind nut2 Evaporator fan3 Electrical wiring plan4 X2 master/slave co
30、nnection5 X3 optional serial interface 6 X1 terminal strip7 Air outlet hole8 Front half of the enclosure9 Rear half of the enclosure10 Louvred grille for air outlet11 Controller12 Infill panel13 Louvred grille for air inlet14 Rating plate15 Condensate discharge16 Dispatch bag3.1 Functional descripti
31、onEnclosure cooling units are designed to dissipate heat from enclosures by cooling the air inside the enclosure and protecting temperature-sensitive components. They are built into the side or rear panel or into the door of the enclosure.3.1.1 How it worksThe cooling unit (compression refrigeration
32、 system) is comprised of four main components (see Fig. 2): the evaporator (1), the coolant compressor (2), the condenser (3), and the control or expansion valve (4), which are connected by suitable pipework. This circuit is filled with a readily boiling substance, the refrigerant. Coolant R134a (CH
33、2FCF3) is chlorine-free. Its ozone destruction potential is 0, making it very eco-friendly. A filter dryer (5) which is integrated into the hermetically sealed cooling circuit provides effective protection against moisture, acid, dirt par-ticles, and foreign bodies within the cooling circuit.Fig. 2:
34、 Cooling circuit In the evaporator coil (1), the liquid coolant is con-verted to a gaseous state. The energy needed for this purpose is taken from the enclosure air in the form of heat, which has the effect of cooling the enclosure air. In the compressor (2), the coolant is heavily compressed, so th
35、at it achieves a higher temperature inside the condenser (3) than the ambient air. This means that excess heat may be emitted to the ambient air via the surface of the con-denser, as a result of which the temperature of the coolant drops and it is converted back into liquid. It is re-injected into t
36、he evaporator coil via a thermo-static expansion valve (4), which causes it to cool down further, and is then once again able to absorb the energy from the enclosure air in the evaporator coil. The whole cycle begins again.3.1.2 ControllerRittal enclosure cooling units are fitted with a control-ler
37、for setting the functions of the cooling unit. Depending on the design, this is either a Basic con-troller (display of the operating status via LED) or a Comfort controller (display plus extended functions, see chapter “6 Operation”, page 22).3.1.3 Bus mode (Comfort controller only)The serial interf
38、ace X2 allows you to create a bus connection with up to 10 cooling units using the master/slave cable (shielded, four-wire cable, Model No. SK 3124.100). This allows you to imple-ment the following functions: Parallel unit control (the cooling units in the network can be switched on and off simultan
39、eously) Parallel door status message (“door open”) Parallel collective fault message Data is exchanged via the master/slave connection. During commissioning, an address is assigned to each device which also includes the identifier “master” or “slave”.10 9 8 11 13 12 16 15 14 1 2 4 5 6 7 3 PSAHpressu
40、re-operatedswitchCondenser fanExpansion valve (4)TemperaturecontrolFilter dryer (5)Internal circuitCompressor (2)External circuitEvaporator fanEvaporator coil (1)Condenser (3)Rittal cooling unit assembly instructions 53 Device descriptionGB3.1.4 Safety equipment 3.1.6 Filter mats In the cooling cycl
41、e, the cooling unit has a tested pressure-operated switch to EN 12 263 which is set to maximum PS (admissible pressure); this operates via an automatic reset device whenever the pressure drops again. Temperature monitoring prevents the evaporator coil from icing over. If there is a risk of icing ove
42、r, the compressor switches itself off and automati-cally switches itself on again at higher tempera-tures. The refrigerant compressor and the fans are equipped with thermal winding shields to protect against excess current and excess temperatures. In order to allow a reduction of pressure inside the
43、 compressor and hence a safe restart, once it has been switched off (e.g. upon reaching the set tem-perature via the door limit switch function or via de-energising), the device will switch back on with a delay of 180 seconds. The device has one (in the case of the Basic con-troller) or two (in the
44、case of the Comfort controller) integral floating contacts on the connection clamp (system message relay with changeover contact, terminal 3 5) which may be used to retrieve messages from the cooling unit, e.g. via PLC.3.1.5 CondensationAt high levels of humidity and low temperatures inside the encl
45、osure, condensation may form on the evaporator coil.The cooling units (except SK 3302.xxx, SK 3303.xxx and SK 3361.xxx) have automatic, electric conden-sate evaporation. The thermal component used for this purpose is based on self-regulating PTC tech-nology. Condensation arising on the evaporator co
46、il is collected in a tank in the external circuit of the cooling unit, and partially evaporated via the airflow. When the water level rises, the water enters the PTC thermal component and is evaporated (through-flow principle). The water vapour flows out of the cooling unit with the airflow from the
47、 external fan.The PTC thermal component is permanently con-nected and has no switchpoint. It is protected against short-circuits with miniature fuses. If the fuse has tripped, any condensation is drained off via the safety overflow.For unit types SK 3302.xxx, SK 3303.xxx and SK 3361.xxx, the condens
48、ation is routed downwards out of the unit via a drain pipe on the evaporator coil divider panel. For this purpose, a hose must be con-nected to the condensate nozzle (see “4.4 Connect-ing the condensate drain”, page 11). External con-densate evaporators are available as accessories for these unit ty
49、pes (refer also to the accessories in the Rittal Catalogue).The entire condenser in the cooling units is finished with a dirt-repelling, easy-to-clean RiNano coating. In many cases, therefore, the use of filter media is unnecessary, particularly in the case of dry dusts.For coarse dust and lint in the enclosure air, we recommend installing an additional PU foam filter mat (available as an accessory) in the cooling unit. Depending on the incidence of dust, you will need to replace the filter from time to time.For air containing oil condensation, we recommend the use
