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Original Operating and Service Manual Screw Air Compressor L07 - L11, L07RS - L11RS L07FS - L11FS, L07RS FS - L11RS FS ● ● ● Id. no. ZS1066273 / 03 - December 2011...
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Gardner Denver Company or Distributor can provide a number of optional maintenance agreements to suit your requirements. These agreements provide the user with the expertise of our factory trained technicians and the guarantee that only Genuine CompAir parts will be used. Warranty The conditions of the Gardner Denver Warranty are set out in the Company’s standard Conditions of Sale available from...
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Data sheet for users Fig. 1 *) The values on the type plate are maximum values. Your CompAir distributor Name: Address: ______________________________________________________________________________________ ______________________________________________________________________________________ ______________________________________________________________________________________ Telephone: Fax: Contact: Spare Parts: Service:...
Maintenance Notes on the compressor Carefully performed maintenance is imperative, this CompAir screw compressors are the result of many ensures that your screw compressor can meet all the years of research and development. These requirements placed upon it. It is therefore imperative to...
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Operating errors • Incorrect maintenance • Wrong auxiliary materials • Use of spare parts other than CompAir genuine • spare parts Modifications and changes to the installation • The warranty and liability conditions of the general terms and conditions of Gardner Denver will not be extended by the notes above.
4.2 Schematic diagram ..............................20 4.3 Oil circuit..................................21 4.4 Air circuit..................................21 4.5 System control ................................21 4.5.1 System control L07-L11 / L07FS-L11FS......................21 4.5.2 System control L07RS-L11RS and AirStation L07RS FS-L11RS FS............22 4.6 Hood (opening/closing)...............................23 5 Transport and installation ..............................24 5.1 Transport ..................................24 5.2 Installation ...................................25 6 Preparations for commissioning ............................26...
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8.8 Emergency off button..............................37 8.9 Acknowledging warning / fault messages .........................38 8.9.1 Warning messages ............................38 8.9.2 Fault messages...............................38 8.10 Menu structure (apart from L07RS-L11RS) (values are examples).................39 8.11 Menu structure (only L07RS-L11RS) (values are examples)...................40 9 Service and maintenance..............................41 9.1 Maintenance recommendations..........................41 9.2 Maintenance electric motor ............................41...
3. Safety regulations Safet y r eg ula tio ns General safety instructions Identification of safety guidelines Organizational measures Gardner Denver is not liable for any damage or injury resulting from the non-observance of these safety The operating instructions must always be at hand at instructions or negligence of the usual care and the place of operation of the machine/unit! attention required during handling, operation,...
3. Safety regulations For the execution of maintenance work, tools and The manufacturer is not liable for damage resulting workshop equipment adapted to the task on hand are from the use of non-original parts or special accessories. This applies also to the installation and absolutely indispensable.
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3. Safety regulations If a remote control is used, the system must carry a If the room temperature can fall below zero, the clearly visible sign with the following note: Attention! condensation drain system must be protected from This installation is operated by remote control and can freezing, e.g.
3. Safety regulations Before blowing through a hose or an air pipe ensure Maintenance and repair work may only be carried out that the open end is positively held. A free end whips under the supervision of a person who is qualified for and can cause injuries.
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3. Safety regulations Avoid damage to the safety valves and other pressure Maintenance/rectification of faults reducing components. Check in particular for clogging The employer has to inform the employee of the caused by paint, oil carbon or the accumulation of dust, dangers possibly arising during the repair and which could deteriorate the effectiveness of these maintenance of the machine/unit as well as on how to...
3. Safety regulations If the set-up, maintenance or repair require the Before carrying out welding, flame-cutting and grinding demounting of safety equipment, this equipment has to operations, clean the machine/unit and its surroundings be remounted and checked immediately after these from dust and other inflammable substances and make activities.
3. Safety regulations Oils, greases and other chemical substances When handling oils, greases and other chemical substances, observe the safety regulations for this product! Be careful when handling hot fuels and consumables (danger of burning or scalding)! Rooms subject to explosion hazards Danger Compressor units must never be operated in areas subject to explosion hazards!
3. Safety regulations Symbols and explanations Carefully read the operating manual before commissioning or servicing this compressor. Never breathe in compressed air from this system. Never operate the unit with open doors or loose access panels.
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3. Safety regulations Warning: Hot surface Warning: Pressurized part or system Warning: This system can start up by means of a remote control or automatically after a power failure.
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3. Safety regulations Warning: The system continues to run for 30 seconds after pressing the O-key Warning: Danger of electric shock Attention: Lifting point...
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3. Safety regulations Attention: Check and, if required, re-tighten connection terminals. For further details, see the operating instructions. Attention: Electric motor fasteners Electric motor fasteners used for securing the unit during transportation have to be removed prior to commissioning (see also chapter 6.4).
4. Design and functioning Desig n a n d f un cti oni ng Design of the unit 4.1.1 Design of the unit - L07-L11 (RS) a L07-L11 Fig. 2 1 Intake filter 12 Oil cooler 24 EMERGENCY OFF push-button 2 Intake regulator 13 Safety valve 25 Control cabinet...
4. Design and functioning Oil circuit System control The oil flows from the pressure reservoir (- 6 - Fig. 3) into the oil thermostat (- 17 - Fig. 3). With oil tempera- tures < 55 °C/131 °F the oil flows via the by-pass of the oil cooler directly into the oil filter (- 11 - Fig.
4. Design and functioning Automatic operation (open-close operation) 4.5.2 System control L07RS-L11RS and AirStation L07RS FS-L11RS FS When the pressure reaches the upper switching point • set on the network pressure sensor (-7 - Fig. 4), (See also operating instructions for the compressor solenoid valve (Y1 Fig.
4. Design and functioning Speed control operation Hood (opening/closing) Speed is controlled using a software-implemented PI The compressor is provided with a detachable plastic regulator that adapts the RPMs according to the need hood that allows easy access to all parts that are for compressed air.
AirStation L07FS-L11FS: AirStation L07FS 356 kg AirStation L11FS 371 kg AirStation L07RS FS 373 kg AirStation L11RS FS 383 kg Fig. 6 b Danger The compressor must be lifted using a suitable forklift truck which complies with the local safety regulations.
5. Transport and installation Installation A = 0.5m B = 0.8m Fig. 7 Danger The weight carrying capacity of the foundation • has to be taken into account when installing the compressor. Provide for a solid and plane base. • The system may not be operated on the transport •...
6. Preparations for commissioning Pr epar ati on s f or com m iss io nin g CompAir screw compressors are rated for ambient Cooling air volume/minimum cross temperatures and cooling temperatures of +1°C/ 33.8°F to +45°C/113°F. In the case of temperatures other than the above limiting values, please consult your technical adviser.
6. Preparations for commissioning Compressed air connection Note After-coolers, separators, collecting reservoirs and the compressed air lines must be equipped with drain facilities at their lowest points to drain collected liquids. These facilities have to be fitted to allow the observance of the draining of such liquids.
Compressor type Supply voltage motor power (slow-blow fuse) at 30°C [kW] [AgG] 50-Hz-Compressors L07, L07FS 4G2.5 4G10 L11, L11FS L07RS, L07RS FS L11RS, L11RS FS 60-Hz-Compressors L07, L07FS 4G2.5 4G2.5 4G10 4G10 L11, L11FS L07RS L11RS Notes on the table:...
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Work on the control cabinet may only be carried out by electrotechnical specialist personnel. Only L07RS-L11RS and L07RS FS-L11RS FS: Danger of electric shock from loaded condensers! Please always first disconnect the system from the power supply and wait another 10 minutes before touching the electrical components.
L07, L07FS 460V 575V 200V 230V L11, L11FS 460V 575V L07RS 460V L11RS 460V An adequate electrical power supply of the correct Danger voltage must be provided. All control enclosure wiring The power supply to the compressor side has to be has been completed at the factory.
Work on the control cabinet may only be carried out by electrotechnical specialist personnel. Only L07RS-L11RS and L07RS FS-L11RS FS: Fig. 12 Danger of electric shock from loaded condensers! Please always first disconnect the system from the power supply and wait another 10 minutes before touching the electrical components.
The access panels may temporarily be opened for Important checking the direction of rotation (wear ear protectors). Although every CompAir screw compressor has been subjected to a test run at the factory and has Danger again been thoroughly inspected before shipment, damage during shipment cannot be excluded.
7. Commissioning Temperature start-up protection Commissioning after malfunction The screw compressor unit will not start up if the Important ambient temperature is lower than + 1 °C/33.8 °F. Do not switch the screw compressor on repeatedly without having rectified the malfunction, since this may cause considerable damage to the machine.
8. Control system Contr ol s yst em Status indicator (display / light General signals) This chapter is used to quickly commission the unit. The control system is explained in detail in the separate The control system is fitted with a three-row display. DELCOS Pro operating instructions.
[MAINTENANCE SCHED.] [ CONTROL MENU ] 8.5.2 Setting network pressure [ FAULT MEMORY ] (apart from L07RS-L11RS) [ TIMER CONTROL ] [ LIMIT VALUES ] Max. network pressure: [OPTIONAL IN-/OUTPUTS] The network pressure is set in the [ CONTROL MENU ] ...
8. Control system 8.5.3 Setting line pressure 8.5.4 Setting time/date (timer) (only L07RS-L11RS) The DELCOS Pro accumulator can bridge a loss of Speed is controlled with the aid of a PI controller power lasting between around two to three weeks. If...
8. Control system Acknowledging warning / fault messages Warning and fault messages are shown in the third row of the display. The red light signal flashes at the same time. You will find a table containing messages and suggested ways of remedying problems in the separate DELCOS Pro operating instructions.
8. Control system 8.10 Menu structure (apart from L07RS-L11RS) (values are examples) + TOTAL RUNNING 12345h [MAINTENANCE SCHED.] LOADED HOURS 10987h + AIR FILTER IN 2000h OIL FILTER IN 2000h ...
In order to facilitate this task, the scope of supply of the screw compressor unit comprises the “Maintenance and Checks and maintenance work may only be carried inspection manual for CompAir compressors”, in which out when the following points are observed: you can list your performed maintenance work at the Press the STOP button on the control panel and •...
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General maintenance/cleaning Oil change when using CompAir - 4000 hours oil (only European version) Oil change when using SSL-50 or SSL-35-F Food Grade (only USA version) ...
9. Service and maintenance transported through the air intake filter into the oil circuit Oil change of the compressor unit. Also a high content of humidity in the intake air and the formation of condensate within the machine affect the service life of the lubricant oil so that a reduction in the oil change intervals may become necessary.
9. Service and maintenance In this case the oil must be analyzed to check the Unscrew the oil filter cartridge ( - 1 - Fig. 18) using • permissible length of time that the oil can be used (see an appropriate tool also chapter 9.15).
9. Service and maintenance Check for leakage • Change of the fine separator Check oil level (see chapter 6.5) cartridge • If required, top up oil. • Changing intervals for oil fine separator cartridge The operating conditions (e.g. coolant temperatures), the operating modes and the quality of the intake air (e.g.
9. Service and maintenance Safety valve Fig. 20 1 Air filter Fig. 21 2 Fixing clip 1 Safety valve Change the air filter as follows: Fig. 2b shows the safety valve of the L07FS-L11FS series. Loosen screw at fixing clip ( - 2 - Fig. 20) •...
9. Service and maintenance Changing the V-belt is carried out as follows: Changing V-belts/automatic tensioning system Open front panel • Lift the motor by turning the motion screw • Danger (- 2 - Fig. 22) counterclockwise until the V-belts are released Only perform checks and carry out work when the screw compressor unit is out of operation and...
9.12 General maintenance and cleaning 2 Mounting bolt 3 Bottom access panel Important 4 Inlet filter (only L07RS-L11RS) 5 Outlet filter (only L07RS-L11RS) Remove oil residues and other deposits from unit parts and from the coolers of compressors, which Danger are exposed to hot compressed air, according to the operating instructions.
SSL-50 b) SSL-35-F Food Grade (Optional) c) SSL-46 (Optional) d) CompLube “10“ (Optional) For further information, please contact your local CompAir Distributor or Gardner Denver-USA at (937) 498-2500. CANADA-Version: a) CS6000XL b) CSS20 Food Grade (Optional) For further information, please contact your local CompAir Distributor or Gardner Denver-Canada at (905) 847-0688.
10. Trouble-shooting Tr ou ble -s ho oti ng Malfunction Possible cause Remedy Unit cannot be started No operating or control voltage Check fuses, main switch and supply line Malfunction not acknowledged Acknowledge fault message Pressure reservoir not depressurized Wait until depressurized Electric motor defective Check connections, winding, etc.
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10. Trouble-shooting Malfunction Possible cause Remedy Unit switches off Ambient temperature too high Ventilate compressor room Electric motor defective Check electric motor and thermistor Fan defective Check/replace fan Cross section of the electric supply Measure power requirement, lines too small if necessary, replace lines Power requirement too high Oil fine separator clogged,...
11. Annex Ann ex 11.1 Technical data EUROPE version L07-L11 50 Hz Technical data L07-L11 ; 50 Hz Maximum operating pressure Minimum operating pressure Ambient temperature °C + 1 / + 45 Flow /min 1.30 1.06 0.85 1.82 1.61 1.32 Final compression temperature above ambient temp.
11. Annex 11.2 Technical data EUROPE version L07-L11 60 Hz Technical data L07-L11 ; 60 Hz Maximum operating pressure Minimum operating pressure Ambient temperature °C + 1 / + 45 Flow /min 1.27 1.12 0.77 1.84 1.67 1.29 Final compression temperature above ambient temp. °C Sound pressure level (to ISO 2151) dB(A)
11. Annex 11.3 Technical data EUROPE version L07RS Technical data 50Hz / 60Hz L07RS Maximum operating pressure 13.0 Minimum operating pressure Ambient temperature °C + 1 / + 45 Operating pressure 7.5 bar 9 bar 10 bar 13 bar min.
11. Annex 11.4 Technical data EUROPE version L11RS Technical data 50Hz / 60Hz L11RS Maximum operating pressure 13.0 Minimum operating pressure Ambient temperature °C + 1 / + 45 Operating pressure 7.5 bar 9 bar 10 bar 13 bar min. max.
11. Annex 11.6 Technical data USA/Canada version L07RS Technical data 50Hz / 60Hz L07RS Maximum operating pressure psi g Minimum operating pressure psi g Ambient temperature °F + 34 / + 113 Operating pressure psi g min. max. min. max.
11. Annex 11.7 Technical data USA/Canada version L11RS Technical data 50Hz / 60Hz L11RS Maximum operating pressure psi g Minimum operating pressure psi g Ambient temperature °F + 34 / + 113 Operating pressure psi g min. max. min. max. min.
A = Compressed air connection G 3/4“ B = Cooling air inlet C = Cooling-air outlet D = Cable entry E = Cooling-air outlet of control cabinet (L07RS-L11RS only) F = Cooling-air inlet of control cabinet (L07RS-L11RS only) G = Center of gravity...
11. Annex 11.9 Layout plan AirStation L07FS-L11FS and L07RS FS-L11RS FS PLUG 2” (all dimensions in mm) Fig. 25 A = Compressed air connection G 3/4“ B = Cooling air inlet dryer C = Cooling-air outlet dryer D = Cooling-air outlet compressor E = Condensate drain G 3/8“...
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Gardner Denver Deutschland GmbH Argenthaler Str. 11 55469 Simmern Deutschland Tel. ++49 (0)6761 832-0 ++49 (0)6761 832-409 w w w.compair.com e-mail: sales@compair.com...
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