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- Page 1 Service Manual Screw Compressor SIGMA CONTROL BASIC 9_9452 04 E Manufacturer: KAESER KOMPRESSOREN SE 96410 Coburg • PO Box 2143 • GERMANY • Tel. +49-(0)9561-6400 • Fax +49-(0)9561-640130 http://www.kaeser.com...
- Page 2 Original instructions /KKW/SSK 2.04 en SBA-SCHRAUBEN-SCB 20140402 103228...
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Page 3: Table Of Contents
Treating injuries from handling cooling oil ............3.10 Warranty ........................... 3.11 Environment protection ....................Design and Function Enclosure ......................... Machine function ......................Safety devices ........................Operating modes and control modes ................Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... - Page 4 Switching off in an emergency and switching on again ............ Acknowledging alarm and warning messages ..............Setting parameters ......................Fault Recognition and Rectification Basic instructions ......................Alarm messages (machine shut down) ................Warning messages ......................Other Faults ........................Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 5 13.1 Pipeline and instrument flow diagram (P&I diagram) ............13.2 Pipeline and instrument flow diagram (P&I diagram) MODULATING control ....101 13.3 Dimensional drawing ......................107 13.4 Electrical Diagram ......................110 Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
- Page 6 Contents Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 7 Fig. 28 Changing the oil filter ........................Fig. 29 Changing the oil separator cartridge ..................Fig. 30 Transporting with a forklift truck ....................Fig. 31 Transporting with a crane ......................Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
- Page 8 List of Illustrations Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 9 Regular maintenance tasks ......................Tab. 51 Cooling oil: Change intervals ...................... Tab. 52 Regular service tasks ......................... Tab. 53 Permissible cooling oil level under LOAD ................. Tab. 54 Logged maintenance tasks ......................Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
- Page 10 List of Tables Tab. 55 Consumable parts ........................Service Manual Screw Compressor viii SK SIGMA CONTROL BASIC 9_9452 04 E...
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Page 11: Regarding This Document Using This Document
Warns of a potentially dangerous situation May result in a moderate physical injury Tab. 1 Danger levels and their definition (personal injury) Warning notices preceding a chapter apply to the entire chapter, including all sub-sections. Example: Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 12: Potential Damage Warnings
➤ The protective measures against the damages are shown here. ➤ Carefully read and fully comply with warnings against damages. 1.4.3 Other alerts and their symbols This symbol identifies particularly important information. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... - Page 13 The cause is named in the help text ... ➤ ... as is a solution. This symbol identifies important information or measures regarding the protection of the envi‐ ronment. Further information Further subjects are introduced here. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
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Page 14: Technical Specifications Nameplate
Transformer power supply for refrigeration dryer — Refrigeration dryer — Prepared for heat recovery Tab. 4 Options Mass The values shown are maximum values. Actual mass of individual machines are dependent on equipment fitted. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 15: Temperature
3 – 45 [°C] Intake air temperature 3 – 45 3 – 45 [°C] * Higher altitudes are permissible only after consultation with the manufacturer. Tab. 7 Ambient conditions Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 16: Ventilation
0.35 0.40 ure 8 [m Forced ventilation with 4500 5500 exhaust fan: Flow rate [m /h] at 100 Tab. 9 Overview Ventilation (60Hz) Pressure Maximum working pressure: (see nameplate) Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 17: Delivery
Cooling oil recommendation A sticker showing the type of oil used is located near the oil separator tank filler. Information on ordering cooling oil is found in chapter 11. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 18: Tab. 14 Cooling Oil Recommendation
Viscosity at 40 °C 50.7 mm 70.0 mm (D 445; ASTM test) (D 445; ASTM test) Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 19: Cooling Oil Charge
SK 22 SK 25 Fluid volume* [litre] Topping up volume [litres] (minimum–maximum) * Plus the oil volume of the heat recovery system. Tab. 17 Cooling oil charge (Option K1) Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 20: Motors And Power
Mains frequency SK 22 SK 25 50 Hz Noise pressure level as per ISO 2151 and the basic standard ISO 9614-2, tolerance: ±3 dB(A) at maximum machine working pressure Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 21: Electrical Connection
Mains frequency: 50 Hz Rated power supply: 200V±10%/3/50Hz SK 22 SK 25 Backup fuse [A] 4x16 4x25 Power supply line [mm Current input [A] Tab. 23 Supply details 200V/3/50Hz Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 22: Mains Frequency: 60 Hz
Supply conditions at 400V/3/50Hz Machines with current consumption >16 A...≤75 A comply fully with IEC 61000-3-12. 2.14.2 Mains frequency: 60 Hz Rated power supply: 230V±10%/3/60Hz SK 22 SK 25 Backup fuse [A] Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 23: Available Heat Capacity
Maximum heat capacity SK 22 SK 25 available* [kW] 12.3 [MJ/h] [kcal/h] 8340 10576 * With the combination valve set to open at 80 °C. Tab. 31 Heat capacity (option W1) Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 24: Safety And Responsibility Basic Instructions
User's Responsibilities 3.4.1 Observe statutory and universally accepted regulations This is, for example, nationally applied European directives and/or valid national legislation, safety and accident prevention regulations. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 25: Qualified Personnel
The user must ensure that the cooling oil is changed as required or at least annually and the oil change must be documented. Intervals may be varied if an analysis proves that the oil is still usable. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 26: Dangers
The following information concerns work on components that could be under pressure. ➤ Close shut-off valves or otherwise isolate the machine from the distribution network to ensure that no compressed air can flow back into the machine. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... - Page 27 ➤ Operate the machine only with intact sound insulation. ➤ Wear hearing protection if necessary. The blowing-off of the pressure relief valve can be particularly loud. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
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Page 28: Safe Machine Operation
When working on the machine you may be exposed to dangers that can result in accidents with severe adverse health effects. ➤ Wear protective clothing as necessary. Suitable protective clothing (examples): ■ Safety work wear ■ Protective gloves Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... - Page 29 ➤ Do not position the machine in the warm exhaust air flow from other machines. ➤ Keep suitable fire extinguishing agents ready for use. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
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Page 30: Organisational Measures
➤ Give instructions on fire reporting and fire-fighting measures. 3.5.4 Danger Areas The table gives information on the areas dangerous to personnel. Only authorised personnel may enter these areas. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 31: Safety Devices
The following components are affected: ■ Resistance thermometer (Pt100 sensor for measuring the compression discharge temperature) ■ EMERGENCY STOP control device ■ Mains contactor ■ Door interlock switch Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 32: Safety Signs
➤ Operate the machine only with closed safety guards, access doors and pan‐ els. ➤ Switch off and lock out the mains isolating devices and verify the absence of any voltage before opening any machine enclosure or guard. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 33: Emergency Situations
Treating injuries from handling cooling oil Eye contact: Cooling oil can cause irritation. ➤ Rinse open eyes thoroughly for a few minutes under running water. ➤ Seek medical help if irritation persists. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 34: Warranty
➤ Store and dispose of operating materials and replaced parts in accordance with local environ‐ ment protection regulations. ➤ Observe national regulations. This applies particularly to parts contaminated with compressor cooling oil. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 35: Design And Function
Safe and reliable operation is only assured with the enclosure closed. Access doors are hinged to swing open and removable panels can be lifted off. Latches are released by a key supplied with the machine. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 36: Machine Function
The following safety devices are provided and may not be modified in any way. ■ EMERGENCY STOP control device: The EMERGENCY STOP button shuts down the compressor immediately. The motor remains stopped. The pressure system is vented. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 37: Operating Modes And Control Modes
The compressor block conveys the compressed air into the air network, and the delivery changes within the permissible regulating range of the machine. The control valve is factory set. The setting should not be changed without consultation with KAESER Service. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 38: Control Modes
(and more frequently) the drive motor is stop‐ motor. The shorter the ped. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 39: Operating Panel Sigma Control Basic
Operating panel SIGMA CONTROL BASIC Keys Fig. 5 Keys – overview Position Name Function «ON» Switch on the machine. «OFF» Switches the machine off. Resets alarms (acknowledge). Resets the maintenance interval counter. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 40: Fig. 6 Indicators - Overview
Lights yellow for: ■ maintenance work due, ■ Warning messages Controller on Lights green when the power supply is switched on. Lights green when the machine switched on. Tab. 39 Indicators Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 41: Functional Description - Sigma Control Basic
Temperature display unit The airend outlet temperature can be displayed in either °C or °F. Pressure display unit The current working pressure can be displayed in bar, psi or MPa. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 42: Tab. 41 Parameter
ON: The counter is reset and the Options The displayed values inform KAESER Service concerning the controller's internal ma‐ chine configuration. Tab. 41 Parameter Further information For changing or adjusting parameters, please see chapter 8.4. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 43: Messages
If the «ON »key is pressed while the remote contact is open, the machine remains in stand-by and starts as soon as the remote contact closes. Options The options available for your machine are described below. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 44: Machine Mountings
If the cooling oil temperature is too low, condensate can form and damage the machine. ➤ Consult KAESER Service on components and layout to ensure proper functioning of the cooling and heat recovery systems. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 45: Installation And Operating Conditions
The distances quoted are recommended distances and ensure unhindered access to all ma‐ chine parts. ➤ Please consult KAESER if they cannot be kept to. Precondition The floor must be level, firm and capable of bearing the mass of the machine. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 46: Ensuring The Machine Room Ventilation
2. Make sure that the machine and exhaust fan can only operate when the inlet aperture is ac‐ tually open. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 47: Exhaust Duct Design
To ensure the desired air quality when charging a vented air network, we recommend the installa‐ tion of an air main charging system. ➤ Consult KAESER for advice on this subject. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 48: Installation
➤ Do not open the cabinet while the machine is switched on. Further information Details of authorised personnel are found in chapter 3.4.2. Details of dangers and their avoidance are found in chapter 3.5. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 49: Reporting Transport Damage
3. Test the overcurrent protection cut-out (backup fuse) to ensure that the time it takes to discon‐ nect in response to a fault is within the permitted limit. 4. Select supply cable conductor diameters and fusing in accordance with local regulations. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 50: Connecting The Remote Load-Idle Control
Option H1 Anchoring the machine ➤ Use appropriate fixing bolts to anchor the machine. Further information Details of the fixing holes are contained in the dimensional drawing in chapter 13.3. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 51: Connecting The External Heat Recovery System
An unsuitable heat exchanger or incorrect installation may influence the cooling oil circuit within the compressor. Damage to the machine will follow. ➤ Consult KAESER on a suitable heat exchanger and have KAESER Service do the installation. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 52: Initial Start-Up Ensuring Safety
➤ Do not open the cabinet while the machine is switched on. Further information Details of authorised personnel are found in chapter 3.4.2. Details of dangers and their avoidance are found in chapter 3.5. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 53: Instructions To Be Observed Before Commissioning Or Re-Commissioning
➤ Has the drive belt tension been checked? 10.9 ➤ Is there sufficient cooling oil in the separator tank? 10.13 ➤ Is there sufficient cooling oil in the airend? Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 54: Setting The Overload Protection Cut-Out
The power supply isolating device is switched off, the device is locked off, the absence of any voltage has been verified. Fig. 11 Airend filling port Screw plug Airend Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 55: Activating And Deactivating The Modulating Control
KAESER Service. Starting the machine for the first time Precondition No personnel are working on the machine. All access doors are closed. All removable panels are in place and secured. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 56: Setting The Setpoint Pressure
3. 2. Press and hold «enter» for at least 3 seconds until the cursor flashes. 3. Use the arrow keys to set the desired differential and confirm with «enter». Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 57: Checking The Door Interlock Switch
The machine shuts down automatically. The controller displays an alarm message. 2. Close the panel and acknowledge the alarm. The machine does not shut down? ➤ Have the interlock switch checked by an authorised KAESER Service representative. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 58: Operation
It can re-start automatically as soon as power is restored. Result The compressor motor starts as soon as system pressure is lower than the set point pressure (cut- off pressure). Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 59: Switching Off
Switching on Precondition The fault has been rectified 1. Turn the EMERGENCY STOP button in the direction of the arrow to unlatch it. 2. Acknowledge any existing alarm messages. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 60: Acknowledging Alarm And Warning Messages
Message coming: LED illuminates ■ Message going: LED off ➤ Rectify fault or carry out maintenance. Warning LED extinguishes as soon as the cause of the warning is rectified. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 61: Setting Parameters
2. Repeat until all characters have been entered. When the correct password is entered the parameters are displayed. 3. Use the «UP»/«DOWN» keys to change the value of the parameter and confirm with «enter». Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 62: Fault Recognition And Rectification
➤ Have the pressure switch checked by an rotation authorised KAESER Service Technician. ■ drive belts parted ■ No venting at READY ■ Pressure switch defective. Brief interruption of power sup‐ ply. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 63: Warning Messages
Machine below minimum permissi‐ ➤ Increase room temperature. ble starting temperature. Pressure relief valve check mode ➤ Check pressure relief valve. switched on. ➤ Deactivate check mode. Tab. 47 Warning messages Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 64: Other Faults
Drain off oil until the correct lev‐ tank too high. el is reached. Oil return line clogged. Check dirt trap in the return line. Tab. 48 Other faults and actions Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 65: 10.1 Maintenance
➤ Check all hose couplings in the compressed air system with a hand-held pressure gauge to en‐ sure that they all read 0 bar. ➤ Do not open or dismantle any valves. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 66: Following The Maintenance Plan
2. Depress the «Enter »key for at least 3 seconds. 3. When the cursor flashes, confirm the offered value with the «Enter» key. 10.2.3 Regular maintenance tasks The table below lists maintenance tasks required. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 67: Cooling Oil: Change Interval
KAESER Service will support you in determining suitable intervals and provide information on the possibilities of oil analysis. ➤ Observe national regulations regarding the use of cooling oil in oil-injected rotary screw com‐ pressors. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 68: Regular Service Tasks
Cooler: Cleaning or Renewing the Filter Mats The filter mats help to keep the cooler clean. If the filter mats are clogged, adequate cooling of the components is no longer ensured. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 69: Control Cabinet: Clean Or Renew The Filter Mat
Spare parts (as required) Precondition The power supply isolating device is switched off, the device is locked off, the absence of any voltage has been verified. The machine has cooled down. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 70: Cooler Maintenance
Face mask (as required) Precondition The power supply isolating device is switched off, the device is locked off, the absence of any voltage has been verified. The machine has cooled down. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 71: Maintaining The External Heat Recovery System
Check the heat exchanger regularly for leaks and contamination. Frequency of checking is depend‐ ant on the characteristics of the heat transfer medium. ➤ Have the external heat recovery system checked annually by KAESER Service. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 72: Air Filter Maintenance
Spare parts (if required) Precondition The power supply isolating device is switched off, the device is locked off, the absence of any voltage has been verified. The machine has cooled down. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 73: Fig. 21 Drive Belt Maintenance
3. Install the new belt and use the adjusting nut to adjust tension until the marker pin reaches the lower end of the elongated hole. 4. Tighten the locking nut Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 74: Testing The Pressure Relief Valve
➤ Abort the test if the working pressure reaches 10 % above the blowoff pressure of the valve. 2. Press the «ON» key for short time. The machine starts in IDLE. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 75: Testing The Emergency Stop Device
The sight glass allows a risk-free reading of the cooling oil level. The oil indicator should be fully filled with oil when the machine is at standstill. The correct oil level cannot be seen. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 76: Venting The Machine (De-Pressurising)
The maintenance hose with hose coupling and shut-off valve needed for venting is stowed beneath the oil separator tank. Precondition The power supply isolating device is switched off, the device is locked off, the absence of any voltage has been verified. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 77: Fig. 24 Venting The Machine
➤ Disconnect the male hose fitting and close the shut-off valve ➤ If manual venting does not bring the oil separator tank pressure gauge to zero: Contact the KAESER Service. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 78: Replenishing The Cooling Oil
Shut-off valve closed Cooling oil level indicator Maintenance hose 1. Vent the machine as described in section 10.15.1. 2. Fill with cooling oil and test run as described in section 10.15.2. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 79: Venting The Machine (De-Pressurising)
10.15.2 Topping up with cooling oil and trial run Replenishing the cooling oil A sticker on the oil separator tank specifies the type of oil used. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 80: Changing The Cooling Oil
The maintenance hose with hose coupling and shut-off valve is stowed beneath the oil separator tank. CAUTION There is risk of burns from hot components and oil! ➤ Wear long-sleeved clothing and gloves. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 81: Fig. 26 Changing The Cooling Oil, Oil Separator Tank
4. Open the shut-off valve until the pressure gauge on the oil separator tank reads 3– 5 bar. 5. Close the shut-off valve and remove the male hose fitting from the coupling. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 82: Fig. 27 Changing The Cooling Oil, Heat Recovery System
Changing the cooling oil, heat recovery system Thermostatic valve Screw plug 1. Have an oil receptacle ready. 2. Remove the drain plug and allow the oil to drain completely. 3. Replace the plug Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 83: Changing The Oil Filter
The machine is fully vented, the pressure gauge on the oil separator tank reads 0 bar. CAUTION There is risk of burns from hot components and oil! ➤ Wear long-sleeved clothing and gloves. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 84: Changing The Oil Separator Cartridge
4. After approx. 10 minutes of operation: Check the cooling oil level and top up if necessary. 5. Switch off the machine and check for leaks. 10.18 Changing the oil separator cartridge The oil separator element cannot be cleaned. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... - Page 85 Fig. 29 Changing the oil separator cartridge Cover Screw connection Dirt trap Gasket Air pipe Oil separator cartridge Fixing screw Ball (functioning as a check valve) Self-locking nut Strainer Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
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Page 86: Fig. 29 Changing The Oil Separator Cartridge
2. Open the user's shut-off valve between the machine and the air distribution network. 3. Switch on the power supply and reset the maintenance interval counter. 4. After approx. 10 minutes of operation: Switch off the machine and check visually for leaks. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 87: Documenting Maintenance And Service Work
Documenting maintenance and service work Machine number: ➤ Enter maintenance and service work carried out in the list. Date Maintenance task carried out Operating hours Signature Tab. 54 Logged maintenance tasks Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 88: 11 Spares, Operating Materials, Service
Energy savings achieved by avoidance of pressure losses ■ optimum conditions for operation of the compressed air system, ■ The security of genuine KAESER spares. ■ Increased legal certainty as all regulations are kept to. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 89: Service Addresses
Use these parts lists to plan your material requirement according to operating conditions and to or‐ der the required spare parts. ➤ Make sure that any service or repair tasks not described in this manual are carried out by an authorized KAESER Service Technician. Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... - Page 90 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 91 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
- Page 92 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 93 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
- Page 94 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 95 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
- Page 96 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 97 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
- Page 98 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 99 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
- Page 100 Spares, Operating Materials, Service 11.5 Replacement parts for service and repair Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
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Page 102: 12 Decommissioning, Storage And Transport
12.3 Storage Moisture can lead to corrosion, particularly on the surfaces of the airend and in the oil separator tank. Frozen moisture can damage components, valve diaphragms and gaskets. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 103: Transport
The lifting slings must be fed under the machine. The slings may not bear on the side of the housing. Examples of unsuitable fixing points: ■ Pipe sockets ■ Flanges Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... -
Page 104: Disposal
Machines with refrigeration dryers The sealed refrigerant circuit still contains both refrigerant and oil. ➤ Refrigerant and oil must be drained and disposed of by an authorized body. Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... -
Page 105: 13 Annex
Annex 13.1 Pipeline and instrument flow diagram (P&I diagram) 13 Annex 13.1 Pipeline and instrument flow diagram (P&I diagram) Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... - Page 106 Annex 13.1 Pipeline and instrument flow diagram (P&I diagram) Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 107 Annex 13.1 Pipeline and instrument flow diagram (P&I diagram) Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
- Page 108 Annex 13.1 Pipeline and instrument flow diagram (P&I diagram) Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
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Page 111: Pipeline And Instrument Flow Diagram (P&I Diagram) Modulating Control
Annex 13.2 Pipeline and instrument flow diagram (P&I diagram) MODULATING control 13.2 Option C1 Pipeline and instrument flow diagram (P&I diagram) MODULATING control Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... - Page 112 Annex 13.2 Pipeline and instrument flow diagram (P&I diagram) MODULATING control Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 113 Annex 13.2 Pipeline and instrument flow diagram (P&I diagram) MODULATING control Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
- Page 114 Annex 13.2 Pipeline and instrument flow diagram (P&I diagram) MODULATING control Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 115 Annex 13.2 Pipeline and instrument flow diagram (P&I diagram) MODULATING control Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
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Page 117: Dimensional Drawing
Annex 13.3 Dimensional drawing 13.3 Dimensional drawing Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC... - Page 118 Annex 13.3 Dimensional drawing Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E...
- Page 119 Annex 13.3 Dimensional drawing Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
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Page 120: Electrical Diagram
Annex 13.4 Electrical Diagram 13.4 Electrical Diagram Service Manual Screw Compressor SK SIGMA CONTROL BASIC 9_9452 04 E... - Page 121 Annex 13.4 Electrical Diagram Service Manual Screw Compressor 9_9452 04 E SK SIGMA CONTROL BASIC...
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