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8 Inspection and maintenance

EN

36

Rittal enclosure cooling unit

Fig. 56:

Unscrew and remove the corner brackets at the top 
and bottom

Half-way up, remove one spring clip from the front of 
the cooling unit on both the left and right.

Fig. 57:

Remove the spring clips

Hold the cooling unit as straight as possible when re-
moving it from the mounting cut-out.

Fig. 58:

Remove the cooling unit from the mounting cut-out

Set the device down safely in a suitable place.

Next, remove the device's cover as described in sec-
tion 8.4.3 "Removing the cover".

8.4.2

Removing an externally mounted unit

Where cooling units are externally mounted on the en-
closure, only the louvred grille must be removed initially 
prior to cleaning with compressed air. The rear panel in-
cluding all components can remain in the mounting cut-
out.

Remove the louvred grille as described in sec-
tion 5.3.5 "Internal mounting of the cooling unit".

Next, remove the device's cover as described in sec-
tion 8.4.3 "Removing the cover".

8.4.3

Removing the cover

Allow the unit to cool down for at least ten minutes be-
fore removing the cover. 
This should allow hot surfaces inside the unit to cool 
down sufficiently.

For SK 317880x and SK 317980x: Loosen the eight 
screws connecting the cover to the rear panel.

Note:
Please note that when removing the louvred 
grille, contrary to the illustrations shown in 
section 5.3.5 "Internal mounting of the cool-
ing unit",
 the cooling unit is fitted on an enclo-
sure door or side panel.

Caution!
After removing the cover, there is a risk 
of burn injuries from hot component sur-
faces inside the unit.

Caution!
The cooling unit is only stable while the 
hood and rear wall are joined together. It 
is therefore particularly important to se-
cure the rear panel to prevent it from fall-
ing before you remove the hood.

Summary of Contents for SK 3178800

Page 1: ...Enclosure cooling unit Assembly and operating instructions SK 3178800 SK 3178801 SK 3179800 SK 3179801 SK 3184800 SK 3184840 ...

Page 2: ...ferred to hereafter as cooling unit from Rittal Yours Rittal GmbH Co KG Rittal GmbH Co KG Auf dem Stützelberg 35745 Herborn Germany Phone 49 0 2772 505 0 Fax 49 0 2772 505 2319 E mail info rittal de www rittal com www rittal de We are always happy to answer any technical questions regarding our entire range of products DE ...

Page 3: ...ion 21 5 4 2 Install the power supply 23 5 4 3 Connect the alarm relay 24 5 4 4 Interfaces 24 6 Commissioning 25 7 Operation 26 7 1 Control via the display 26 7 2 General information about programming 26 7 3 Updater program 26 7 4 Setting options via the display 27 7 4 1 Selecting a control mode 27 7 4 2 Setting the target temperature 27 7 4 3 Setting the unit 28 7 4 4 Launching test mode 28 7 4 5...

Page 4: ...aintenance personnel 1 3 Symbols used in these operating in structions The following symbols are used in this documentation This symbol indicates an action point and shows that you should perform an operation or procedure 1 4 Other applicable documents Paper copies of the assembly and operating instructions are available for the unit types described here and are enclosed with the equipment We cann...

Page 5: ... the unit is defective or connected incorrectly in any way Do not strip too much insulation from the connection cable otherwise the admissible clearance creepage distances from the terminal point may not be met The cooling unit must be connected to the mains via an all pole disconnect to overvoltage category III IEC 61058 1 Pin 4 on the signal connector should not be used Oth erwise the admissible...

Page 6: ...tworks and sys tems to only persons that need an authorisation Protect accesses Do not use the default passwords instead use se cure long passwords containing numbers a mix of upper case and lower case letters symbols and no repetitions Create random passwords with a password manager Deploy the current firmware version Ensure that the current Rittal firmware is deployed on all devices The firmware...

Page 7: ... the evaporator coil the cooled air is fed back into the enclosure via the outlet opening The air is cooled down by evaporating the refrigerant in the evaporator coil The refrigerant vapour is transported by the compressor in the external circuit of the cooling unit to the condenser There the refrigerant condenses and becomes a liquid The heat produced is dissipated by the condenser fan The downst...

Page 8: ...overloading The fans have a built in overload protection with auto matic reset In order to allow a reduction of pressure inside the compressor and hence a safe restart once it has been switched off e g upon reaching the set temperature via the door limit switch function or via de energising the device will switch back on with a delay of 180 sec onds The device has a floating contact on the connect...

Page 9: ...se as standard Semi outdoor use is defined as fol lows Siting in a roofed outdoor area The cooling unit is protected from the direct impacts of weather conditions such as precipitation or perma nent sunlight Always use within the admissible temperature range The device is secure from unauthorized public access The unit must not be installed and operated in locations which are accessible to the gen...

Page 10: ...K 3184800 SK 3184840 Enclosure cooling unit 1x Shipping bag with 1x Assembly and installation instructions 1x Grub screw M8x40 4x Corner bracket with M8 nut 4x Spring clip 2x Locator clip with cable fastening 1x 2x Signal connector 1x Power plug 1x Sealing tape 10x10 mm for installation 1x 1 74 m 1x 2 7 m Tab 1 Supply includes ...

Page 11: ...nit safely Never allow anyone to stand beneath a suspended load even for a short time during transportation by crane Protect the lifting gear on the crane hook from load de flection because the load s centre of gravity may be off centre First position the cooling unit close to the installation site and protect from accidentally being knocked over Transport of a fitted cooling unit Shipping braces ...

Page 12: ... of the shipping braces Key 1 Fitted cooling unit 2 Bubble wrap 3 Supporting structure 4 Pallet underneath the cooling unit Fig 6 Internal mounting of the shipping braces Key 1 Fitted cooling unit 2 Bubble wrap 3 Supporting structure 4 Pallet underneath the cooling unit 4 3 2 1 4 3 1 2 ...

Page 13: ...ulations The technical specifications and limit values stated must not be exceeded under any circumstances In particular this applies to the specified ambient tem perature range and IP protection category 5 2 Siting location requirements When choosing the installation site for the enclosure please observe the following The site for the enclosure and hence the positioning of the cooling unit must b...

Page 14: ...ption will ultimately depend on how much space you require inside and outside of the enclosure The various mounting options have no influ ence on the cooling output of the cooling unit which re mains the same in all cases If there are a large number of components installed in side the enclosure external mounting of the cooling unit may be appropriate In such cases the space in side the enclosure m...

Page 15: ...Fig 12 Inserting the locator clips for SK 317980x These clips will prevent the cooling unit from falling out of the mounting cut out later on before it is properly secured using the corner brackets with nuts Lift up the cooling unit and initially set it down with the two outside lower grub screws resting on the enclo sure door or side panel Fig 13 Position the cooling unit and push it home For SK ...

Page 16: ... place Attach the two corner brackets with nuts to the grub screws at the top and secure torque 5 Nm Fig 17 Secure with corner brackets at the top In the same way attach the two corner brackets with nuts onto the grub screws at the bottom and secure torque 5 Nm Fig 18 Secure with corner brackets at the bottom Insert one spring clip half way up the rear of the cool ing unit on both the left and rig...

Page 17: ...utside buttons on the right and left of the lower louvred grille and pull it away from the device Fig 22 Pull off the lower louvred grille Pull the top louvred grille away from the mounting clips taking care to hold it as straight as possible Fig 23 Pull off the top louvred grille Set the top louvred grille down in a safe place Disconnect the connector on the display Fig 24 Pull off the connector ...

Page 18: ...he device where wa ter from outside could penetrate Fig 29 Position the joint edge at the top For SK 317880x and SK 317980x At the top left in sert a locator clip so that it latches securely home into the cooling unit Fig 30 Latch home the locator clip for SK 317880x and SK 317980x For SK 31848x0 Insert two locator clips at the top so that they latch securely home into the cooling unit Fig 31 Latc...

Page 19: ... cut out at the top until the clip behind the cut out audibly latches home Fig 34 Latch home the clip behind the cut out for SK 317880x and SK 317980x For SK 31848x0 Push the cooling unit into the mount ing cut out at the top until the clips behind the cut out audibly latch home Fig 35 Lock home the clips behind the cut out for SK 31848x0 Similarly at the top screw two grub screws into the blind r...

Page 20: ...ng unit SK 31848x0 Holding the lower louvred grille at an angle from above engage it fully with the bottom clips Insert the range limiters for the bottom louvred grille into their holders on the left and right of the device Carefully push the connection cable section by section into the groove in the lower louvred grille Insert the connector into the bottom of the display Position the top louvred ...

Page 21: ...ications and section 13 Ac cessories Thanks to the integral inverter technology convention al start up currents start up of internal motors are not externally visible The mains infeed and the signal cable may optionally be of a shielded design The cable shield may be con tacted at the potential equalisation point No additional temperature control may be connected upstream of the unit at the supply...

Page 22: ...t The minimum cross section for the connection cable is 0 3 mm for a cable length of 2 m The line resistance to the door limit switch must not exceed a maximum of 50 Ω The maximum admissible line length is 10 m The door limit switch only supports a floating connec tion no external voltages The contact of the door limit switch must be closed when the door is open The safety extra low voltage for th...

Page 23: ...n for cable routing By moving a locator clip and connecting it to the rear of the device near the electrical connections it can be used as a cable attachment Depending on the type of installation remove the loca tor clip from the front internal mounting or rear exter nal mounting of the unit Fig 47 Removing the locator clips from the front of the device with the installation type internal mounting...

Page 24: ...ssages see section 7 4 8 Evalu ate system messages 5 4 4 Interfaces The cooling unit has the following interfaces for commu nicating with external systems USB C interface on the rear RS 485 interface on the rear NFC interface on the front Interface to the Rittal Smart Service Portal LAN at the rear USB C interface An USB C interface X4 is located at the rear near the top A laptop may be connected ...

Page 25: ...temperature see section 7 Operation Note The oil must collect in the compressor in or der to ensure adequate lubrication and cool ing For this reason do not operate the cooling unit for at least 30 minutes after as sembling the equipment Note It is not necessary to carry out leak or pres sure tests on the cooling unit prior to com missioning Rittal has already done this in the factory Note When th...

Page 26: ...e Briefly press the Home key In addition to the displayed internal temperature the Home key and both arrow keys on the display will be back lit Press the Home key again for approx 3 seconds Cod will appear in the display Briefly press the Home key again Set the device PIN using the arrow keys The number 22 is preset by default Press the Home key again to confirm the set code If the code has been c...

Page 27: ...of the cooling unit s cold air outlet using a cable tie fig 52 Fig 52 Temperature sensor in front of cold air outlet example illustration Selecting a control mode Briefly press the Home key in the tSE menu The sub menu Con control mode will appear for you to select the control mode Choose your preferred control mode using the arrow keys Int Control mode Internal temperature ESt Control mode Extern...

Page 28: ...mmences cooling operation inde pendently of the set temperature or door function of the door operated switch Use the arrow keys to select the tSt menu from the tSE menu then briefly press the Home key again The current setting Off will be displayed Use the arrow keys to select the On setting and keep the Home key pressed down for approximately 3 sec onds The cooling unit begins operation The progr...

Page 29: ...rgised state NO Nor mally Open As soon as voltage is applied to the cooling unit the alarm relay picks up This is the factory setting for the cooling unit s normal operating state As soon as a system message occurs or the power supply is inter rupted the alarm relay will drop out and open the con tact The switch logic of the alarm relay can be altered using the Rittal Scan Service app see section ...

Page 30: ...put From the list activate the slide bar for those messages which you would like to switch the relay output Filter mat Filter reference Here the device may be set permanently to operation with filter mats If the device has already been set to operation with filter mats clicking on the New filter mat icon allows you to reset the Change filter mat system message Filter mat Alarm tolerance Here the a...

Page 31: ...ows a system code current system messages can be viewed here in plain language together with troubleshooting measures and solutions where applicable You can also view a message history listing all messages since the device s last restart For all messages occur ring prior to the most recent restart the number of oper ating hours at the time of the message is given 7 5 4 Product informationen The pr...

Page 32: ...Service app you will find sugges tions on how to rectify the problem yourself Alter natively please contact the Rittal Service team A07 Leak Red X Your cooling unit is reporting a lack of refrigerant in the active refrigerant cycle In the Scan Service app you will find sugges tions on how to rectify the problem yourself Alter natively please contact the Rittal Service team You will need to manuall...

Page 33: ... find sugges tions on how to rectify the problem yourself Alter natively please contact the Rittal Service team A23 Air routing internal circuit Yellow The evaporation temperature is too low In the Scan Service app you will find sugges tions on how to rectify the problem yourself Alter natively please contact the Rittal Service team A24 EEV alarm Red A malfunction has been detected in the electron...

Page 34: ... nent cooling output due to a previous error Please contact the Rittal Service team A33 Compressor phase Red X The compressor in your cooling unit is reporting an error Please contact the Rittal Service team A34 Overload Yellow X An excessive current flow has been detected in the compressor In the Scan Service app you will find sugges tions on how to rectify the problem yourself Alter natively ple...

Page 35: ... cir cuit at least every 5 000 to 8 000 operating hours as described in section 8 4 Compressed air cleaning Any stubborn oily stains may additionally be removed using a non flammable detergent such as degreaser The installed maintenance free fans are mounted on ball bearings protected against moisture and dust and fit ted with a temperature monitor Rittal recommends that the cooling unit fans shou...

Page 36: ...nting cut out Remove the louvred grille as described in sec tion 5 3 5 Internal mounting of the cooling unit Next remove the device s cover as described in sec tion 8 4 3 Removing the cover 8 4 3 Removing the cover Allow the unit to cool down for at least ten minutes be fore removing the cover This should allow hot surfaces inside the unit to cool down sufficiently For SK 317880x and SK 317980x Lo...

Page 37: ...rably on the cover Remove the cover completely from the rear panel and set or lay it down in a safe place Fig 62 Remove the cover Dismantling of the cover is now complete providing ac cess to all components in the external circuit 8 4 4 Cleaning the components with com pressed air After removing the cover from the unit you will be able to access the components in the outer circuit particu larly th...

Page 38: ...e make sure that the PE conductor is not squashed or damaged when replacing the cover During installation please observe the following tor ques for the cover assembly screws 2 screws on the compressor console at the bottom of the unit 3 Nm Remaining 6 8 screws 2 Nm For externally mounted units re fit the cooling unit into the mounting cut out see section 5 3 4 External mounting of the cooling unit...

Page 39: ...rigerant circuit contains refrigerant and oil which must be properly disposed of for the sake of the environment Facilities for disposal are available at the Rittal plant or a specialist company Give us a call see section 14 Customer service addresses Note When storing the cooling unit please ob serve the temperature range given in the technical specifications ...

Page 40: ...52 0 52 1 00 1 00 L35 L50 0 22 0 22 0 32 0 32 0 60 0 60 Sensible cooling capacity Ps kW L35 L20 0 46 0 46 0 69 0 69 1 30 1 30 L35 L35 0 30 0 30 0 52 0 52 1 00 1 00 L35 L50 0 22 0 22 0 32 0 32 0 60 0 60 Power consumption Pel kW L35 L20 0 14 0 13 0 23 0 21 0 36 0 37 L35 L35 0 17 0 15 0 27 0 26 0 42 0 42 L35 L50 0 20 0 18 0 32 0 31 0 48 0 49 10 Energy efficiency ratio EER L35 L20 3 18 3 60 3 04 3 28 ...

Page 41: ...61000 6 2 Emitted interference For residential business and commercial areas and small companies to EN 61000 6 3 Technical specifications for a suitable overvoltage protection module Terminal voltage Uc V Hz 350 400 50 60 Maximum current Imax kA 40 Rated current In kA 20 Breakdown voltage Up kV 1 75 Refrigerant circuit 17 Admissible pressure PS HD ND MPa 3 2 1 9 3 2 2 0 3 4 2 1 11 Operating temper...

Page 42: ...vel Lp 100 cooling output dB A L35 L35 62 63 68 Noise pressure level Lp 75 cooling output dB A L35 L35 56 55 60 Noise pressure level Lp 50 cooling output dB A L35 L35 50 51 56 Humidity 5 95 non condensing 35 Manufacture date DD MM YY 21 Assembly and operating in structions symbols Approvals 22 EAC Yes 23 CE Yes 25 cULus Listed Yes 26 cULus Listed Category ACVS 27 cULus Listed File Number SA8250 29...

Page 43: ...Rittal enclosure cooling unit 43 10 Technical specifications EN e Rev e RITTAL GmbH Co KG Auf dem Stuetzelberg 35745 Herborn RITTAL Limited Braithwell Way Hellaby Rotherham S66 8QY UK ...

Page 44: ... fan 15 Accessories bag 20 Expansion valve 21 Coil for expansion valve 25 Filter dryer 40 Control module 41 Inverter 45 Louvred grille 55 Display 70 Cable set temperature sensor including display cable 75 Cover 76 Rear panel 90 Evaporator 100 Condenser 110 Condensate water evaporator Note The components used are Rittal specific components We recommend using only original Rittal spare parts to ensu...

Page 45: ...an 15 Accessories bag 20 Expansion valve 21 Coil for expansion valve 25 Filter dryer 40 Control module 41 Inverter 45 Louvred grille top 46 Louvred grille bottom 55 Display 70 Cable set temperature sensor including display cable 75 Cover 76 Rear panel 90 Evaporator 100 Condenser 110 Condensate water evaporator 75 10 41 40 45 1 110 46 15 100 25 21 20 55 5 6 90 76 6 70 ...

Page 46: ...Rittal enclosure cooling unit 12 Drawings 12 1 Representation of mounting cut outs SK 3178800 SK 3178801 SK 3179800 SK 3179801 Fig 65 Mounting cut out SK 3184800 SK 3184840 Fig 66 Mounting cut out 280 1 550 1 383 1 929 1 ...

Page 47: ...Rittal enclosure cooling unit 47 12 Drawings EN 12 2 External and internal mounting dimensions SK 317880x width 300 mm Fig 67 Dimensions 159 570 33 126 570 ...

Page 48: ...12 Drawings EN 48 Rittal enclosure cooling unit 12 3 External and internal mounting dimensions SK 317980x width 300 mm Fig 68 Dimensions 199 570 33 166 570 ...

Page 49: ...Rittal enclosure cooling unit 49 12 Drawings EN 12 4 External and internal mounting dimensions SK 31848x0 width 400 mm Fig 69 Dimensions 196 950 36 160 950 ...

Page 50: ...ay be found on the website given in section 14 Customer service address es Item Model No External temperature sensor 3124400 Condensate water hose 3301612 Filter mats 3285850 3285950 Metal filter 3285860 3285660 Door limit switch 4127010 IoT Interface 3124300 Pre fuse 3235600 3235610 3235620 Eyebolt 4568000 Rittal Scan Service app Tab 9 List of accessories ...

Page 51: ...info rittal com Homepage www rittal com For complaints or service requests please contact your local Rittal organisation Argentina Phone 54 11 4760 6660 E mail service rittal com ar Australia Phone 61 2 95 25 27 66 E mail service rittal com au Austria Phone 43 0 599 40 0 E mail service rittal at Belarus Please contact Lithuania E mail service rittal lt Belgium Phone 32 9 353 91 45 E mail service r...

Page 52: ...uras Please contact Mexico E mail servicemx rittal com mx Hong Kong Please contact China E mail marvis lun rittal com Hungary Phone 36 1 399 800 E mail rittal rittal hu Iceland Please contact the headquarters in Germany E mail srj sminor is India Phone 91 80 33720783 E mail service rittal india com Indonesia Please contact Singapore E mail service rittal com sg Iran Please contact Dubai E mail ser...

Page 53: ...ail service rittal middle east com Peru Phone 51 1 2432525 E mail info rittal pe Philippines Please contact Singapore E mail service rittal com sg Poland Phone 48 22 724 2784 E mail service rittal pl Portugal Phone 351 256780210 E mail service rittal pt Qatar Please contact Dubai E mail service rittal middle east com Romania Phone 40 351 76 47 E mail service rittal ro Russia Phone 7 495 775 02 30 ...

Page 54: ...ittal co th Turkey Phone 90 216 383 74 44 E mail servis rittal com tr Turkmenistan Please contact Lithuania E mail service rittal lt UK Phone 44 8448 006 007 E mail service desk rittal co uk Ukraine Phone 38 44 536 9944 E mail service rittal com ua USA Phone 1 800 477 4000 option 3 E mail rittal rittal us Uzbekistan Please contact Lithuania E mail service rittal lt Venezuela Please contact Brazil ...

Page 55: ...tal Scan Service app to support commissioning and subsequent op eration Commissioning check carried out via Rittal Scan Service app Operation Check the device status during operation using the Rittal Scan Service app Read maintenance instructions and warnings or fault messages using the Rittal Scan Service app Tab 10 Quick installation check Original spare parts Maintenance warranty extensions up ...

Page 56: ...ftware Services You can find the contact details of all Rittal companies throughout the world here www rittal com contact RITTAL GmbH Co KG Auf dem Stuetzelberg 35745 Herborn Germany Phone 49 2772 505 0 E mail info rittal de www rittal com 12 2021 D 0000 00002693 00 EN ...

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