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Stulz Free-Air-3-IN, Operating Instructions Manual, Page: 25 / 31

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Free-AIr-3-IN

© STULZ SpA – all rights reserved    EN/02.2018

7.3.  Cleaning / replacement of components

Air Filter 
To replace the air filter, open the frontal panel of the unit and replace it like it is shown in the image 
below.

Fans
To replace the fans, unscrew and open the frontal panel, then unscrew fan supports and remove 
them.

7.4.  General appliance cleaning procedures

The metal casing of the unit can be cleaned using a detergent liquid as long as this liquid is 
compatible with: PVC, polyethylene, silicone and polyester coating. Be careful not to wet the 
electrical connections inside the unit.

  

ATTeNTION

Use of an unsuitable detergent could cause damage to the unit. Do not use acid or caustic 
substances to clean any part of the unit.

Use a vacuum cleaner to remove dust. Inner parts must be cleaned with a liquid detergent and air at 
a pressure not higher than 4 bar and with the unit suitably connected to ground.

Summary of Contents for Free-Air-3-IN

Page 1: ...Issue 02 2018 Free Air 3 IN Free cooling units 48 V DC ...

Page 2: ... group has seen continual international expansion of its air conditioning technology business spe cialising in A C for data centres and telecommunications installations STULZ employs 2 200 workers in Germany and seventeen subsidiaries in France Italy Great Britain Belgium Brazil the Netherlands New Zealand Mexico Austria Poland Spain Singapore China India South Africa Australia and the USA The com...

Page 3: ...hat the STULZ products satisfy the requirements of the European Machinery Directive for safety The level of quality is constantly checked at every stage from design to production making the STULZ products synonymous of SAFETY QUALITY and RELIABILITY For general inquiries concerning products by STULZ SpA please contact our Aftersales at telephone 0039 045 6331615 fax 0039 045 6331635 e mail aftersa...

Page 4: ...4 Free Air 3 IN EN 02 2018 STULZ SpA all rights reserved ...

Page 5: ... 13 4 Unpacking and inspection 16 4 1 Lifting and transport 16 4 2 Storage 17 4 3 Removal of packing 17 5 Installation 17 5 1 Positioning and mechanical installation 18 5 2 Electrical connections 20 6 Start up 22 6 1 Controller setting 22 6 2 Functional checks 22 6 3 Other tests facultative 23 6 4 Shutdown 23 7 Maintenance 24 7 1 Safety instructions 24 7 2 Preventative maintenance schedule 24 7 3 ...

Page 6: ...he art existing at the time the product is marketed and shall not be deemed to be inadequate for the sole reason that it has not been updated as a result of any new experience STULZ reserves the right to update the product and relevant manual without being required to update previous products and manuals other than in exceptional circumstances To require or receive any updates of the instructions ...

Page 7: ...anual INFORMATION This manual must be kept by the customer and made available to the installation commissioning use and maintenance personnel Symbols on this manual DANGER RISK OF INJURY FOR OPERATOR AND POSSIBILITY OF DAMAGING THE UNIT ATTENTION INFORMATION OR WARNING OF CAUTION IN CARRYING OUTA PROCEDURE INFORMATION IMPORTANT INFORMATION 1 1 Personnel qualification and training Personnel in char...

Page 8: ...study of the operating instructions Before any intervention on the unit refer to instructions on this manual check data on the name plate and take any other precaution in order to guarantee optimal safety It is absolutely essential to comply with the procedure for shutting down the system described in the operating instructions Before maintenance work the unit must be switched off at the main swit...

Page 9: ...degree INFORMATION IP protection degree is the protection from the outdoor environment of the unit when installed in its normal use The IP protection degree of STULZ Free Air 3 IN unit installed with suitable external rainproof grille is IPX4 therefore the unit is protected from harmful effects of splashing of water against the enclosure from any direction according to EN 60529 considering the pre...

Page 10: ...odels are identified with a Z on the 11th digit of the code Last 3 digits after Z loose their original meaning as they are the progressive number to identify special versions 3 Components and operating principle 3 1 Intended and non intended use Intended use STULZFree Air 3 INunitsaredesignedforcoolingshelters roomssuitablyprotectedfromweather Their use allows to eliminate problems caused by high ...

Page 11: ...3 IN units the following site configurations are possible 1 FCL stand alone Free cooling made by FCL Working logic FCL control C102 2 FCL one electrical heating connected to FCL Free cooling made by FCL Working logic FCL control C102 Electrical heating Working logic on off control by FCL C102 3 2 Component lay out External fresh air intake is from the rear side of the unit Sucked by the fans situa...

Page 12: ...12 Free Air 3 IN EN 02 2018 STULZ SpA all rights reserved Airflow Electrical Box Fan Fan Air Filter Keypad ...

Page 13: ...nment from entering the internal ambient 3 5 Motors Fan The fans are radial EC centrifugal type single intake with rotor painted in black The degree of protection is IP42 and insulation class B 3 6 Control monitoring and safety components All equipment is set and inspected atthefactoryand generallydoes not requirefurtheradjustments or interventions If for specific reasons it becomes necessary to p...

Page 14: ...he value of parameters is written in the EEPROM so that it is permanently stored even in case of power failure C102 is housed inside the electrical panel and can control one Free Air 3 IN unit A keypad is connected to C102 to display working conditions working state of the unit and possible alarms INFORMATION For controller input output assignation please refer to the electrical diagram included i...

Page 15: ...C Maximum pressure 10 kPa Contacts Microswitch with AgCdO on off contacts Material Switch body Pa 6 6 Plastic PS Protection IP00 Diaphragm Silicone Pressure connection ø 6 pipe Connection Contact 3 1 opens when the differential pressure exceeds the preset value At the same time contact 3 2 closes The signal is transmitted through this contact ...

Page 16: ... registered letter within 8 days of receipt of the goods INFORMATION With ex works delivery conditions carrier is the sole responsible for any damage caused during transport STULZ is not responsible for damages to the goods caused by the carrier but it will do everything in its power to assist clients on those situations If delivery conditions are not ex works in case of damage please follow instr...

Page 17: ...irect solar radiation Store the unit with its original packing Ambient conditions for storage are the following Ambient temperature min max 20 C 60 C Max humidity RH 90 4 3 Removal of packing Remove packing without damaging the unit remove top air bag external film lateral and corner protections Recover any document or component inside the packing Keep original packing pallet and protections for f...

Page 18: ... a proper air circulation preventing any recirculation If it is installed on a door make sure that the hinges are strong enough to support the unit Make sure that the electric cable does not get torn or damaged when the door is closed If the depth of the Free Air 3 prevents the door from being completely opened arrange a stopper for such a door 3 Two openings are required on the walls One is for f...

Page 19: ...so that openings on its rear side correspond to the cut out on the wall Then secure it with M6 screws and the supplied fixing bracket as it is shown below Generally the installation is realized with two horizontal fixing bracket but it is possible to perform a lateral fastening using fixing bracket on request to be applied on the fixing holes on the later side of the unit and into the wall ATTENTI...

Page 20: ... perform maintenance on the unit Maintenance must be done after disconnecting the power supply of the unit see note above Any signal cable temperature probes alarms keypad longer than 3 m must be screened against electromagnetic disturbs Electrical connections have to be carried out only by authorized technical personnel Electrical wiring of this unit must be executed in compliance with following ...

Page 21: ...not supplied with the unit They have to be inserted into the corresponding screw terminals inside the e box of the unit following the wiring diagram DANGER The inobservance of these instructions might provoke damages or malfunction of components and the warranty shall become forthwith void For use of leakage current FI circuit breakers EN 50178 5 2 11 2 must be taken into account Only type B pulse...

Page 22: ...m display and reset counters display In this chapter TI internal temperature TAE external air temperature Make sure the main switch is turned off and that the system is isolated from power mains Check that all power switches and control fuses in the electric system have been turned off Double check that the main electrical supply cable and the terminals including the PE terminals are correctly hoo...

Page 23: ...emperature measured by the probes heat or cool their bulbs physically or alterate their offset please refer to the controller manual To enable FCL working free cooling conditions must be respected TI TAE 2 C in normal conditions and 1 C in emergency mode Change temperature measured by internal probe S1 and if needed temperature measured by external probe S2 to have free cooling conditions Verify a...

Page 24: ...t only be switched on at the master switch after all mechanical connections have been carried out The unit must be switched off immediately after the measuring procedure Moving parts are totally automatic and highly reliable and ordinary maintenance is reduced to a minimum This maintenance however must be performed at the prescribed intervals Failure to perform maintenance compromises FCL operatio...

Page 25: ... procedures The metal casing of the unit can be cleaned using a detergent liquid as long as this liquid is compatible with PVC polyethylene silicone and polyester coating Be careful not to wet the electrical connections inside the unit ATTENTION Use of an unsuitable detergent could cause damage to the unit Do not use acid or caustic substances to clean any part of the unit Use a vacuum cleaner to ...

Page 26: ...s and procedures used in the event of a fire make fire extinguishers readily accessible The following steps must be taken at the outbreak of a fire Turn off the electric power supply from the part affected by fire Increase ventilation capacity to evacuate combustion gases Inform appropriate department 8 2 Hazards arising from the product coming into contact with things or persons A danger point is...

Page 27: ...e servicing the unit Use a pair of safety gloves Open all contacts which feed power to the equipment before measuring resistance levels Check that there is no high voltage in the low voltage circuits Do not use magnetic tools RDXC in the proximity of strong magnetic fields SAFETY STANDARDS TO COMPLY WITH WHEN SERVICING THE UNIT If continuous duty is not required the system must be turned off Befor...

Page 28: ...quid and gas splashes The context in which the unit is located may require the use of additional PPE thus it is mandatory to inquire with the relevant staff of the area before starting operation Once the materials have been separated as shown below they should be assigned EWC codes and then sent for disposal in accordance with the national legislation Disposal related to the unit purchased occurs ...

Page 29: ...n nominal conditions MODEL FCL700B112Z000 Outside operating limit temp min max C 20 45 Inside operating limit temp min max C 20 40 Weight kg 75 Height Width Depth mm 1250 600 600 Nominal voltage V 48 DC Voltage range V 36 57 DC Number Type of fan 2 EC radial Nominal conditions Nominal air flow m3 h 4500 ESP Pa 100 External sound pressure level db A 61 Power consumption at nominal conditions kW 0 4...

Page 30: ...30 Free Air 3 IN 1250 600 125 600 EN 02 2018 STULZ SpA all rights reserved Layout of FCL70 ...

Page 31: ...ww stulz com For general questions about our products and services you can reach us on weekdays from 8 30 17 30 at phone 0039 045 6331615 For sales and support inquiries please make a selection below to find your local contact STULZ Top Service more than quick emergency assistance Service Portal Climate Customized Maintenance Test Center Advice Technical Implementation ...

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