KAESER ASK T series User manual

Service Manual
Screw Compressor
ASK T SIGMA CONTROL BASIC
9_5717 20 E
Manufacturer:
KAESER KOMPRESSOREN GmbH
96410 Coburg • PO Box 2143 • GERMANY • Tel. [phone] • Fax [phone]
http://www.kaeser.com

Original instructions
/KKW/SASK 2.00 en SBA-SCHRAUBEN-T-SCB
20111103 144508

1 Regarding this document
1.1 Using this document ......................................................................................................... 1
1.2 Further documents ........................................................................................................... 1
1.3 Copyright .......................................................................................................................... 1
1.4 Symbols and labels .......................................................................................................... 1
1.4.1 Warnings ............................................................................................................. 1
1.4.2 Potential damage warnings ................................................................................ 2
1.4.3 Other alerts and their symbols ............................................................................ 2
2Technical Specifications
2.1 Nameplate ........................................................................................................................ 4
2.2 Options ............................................................................................................................. 4
2.3 Weight .............................................................................................................................. 4
2.4 Temperature ..................................................................................................................... 5
2.5 Ambient conditions ........................................................................................................... 5
2.6 Ventilation ........................................................................................................................ 6
2.7 Pressure ........................................................................................................................... 6
2.8 Delivery ............................................................................................................................ 7
2.9 Noise emission [dB(A)] ..................................................................................................... 8
2.10 Motors and Power ............................................................................................................ 8
2.10.1 Drive motor ......................................................................................................... 8
2.11 Cooling oil recommendation ............................................................................................. 8
2.12 Cooling oil charge ............................................................................................................ 10
2.13 Power Supply ................................................................................................................... 11
2.14 Power supply specifications ............................................................................................. 11
2.14.1 Mains frequency: 50 Hz ...................................................................................... 12
2.14.2 Mains frequency: 60 Hz ...................................................................................... 13
2.15 Available heat capacity .................................................................................................... 14
2.16 Refrigeration dryers .......................................................................................................... 14
3 Safety and Responsibility
3.1 Basic instructions ............................................................................................................. 16
3.2 Specified use .................................................................................................................... 16
3.3 Improper use .................................................................................................................... 16
3.4 User's Responsibilities ..................................................................................................... 16
3.4.1 Observe statutory and universally accepted regulations .................................... 16
3.4.2 Qualified personnel ............................................................................................. 17
3.4.3 Adhere to inspection schedules and accident prevention regulations ................ 17
3.5 Dangers ............................................................................................................................ 18
3.5.1 Safely dealing with sources of danger ................................................................ 18
3.5.2 Safe machine operation ...................................................................................... 20
3.5.3 Organisational Measures .................................................................................... 22
3.5.4 Danger Areas ...................................................................................................... 22
3.6 Safety devices .................................................................................................................. 23
3.7 Safety signs ...................................................................................................................... 23
3.8 Emergency situations ....................................................................................................... 24
3.8.1 Correct fire fighting ............................................................................................. 24
3.8.2 Treating injuries from handling cooling oil .......................................................... 25
3.8.3 Injury from Handling Refrigerant ......................................................................... 25
3.9 Warranty ........................................................................................................................... 26
3.10 Environment protection .................................................................................................... 26
4 Design and Function
4.1 Enclosure ......................................................................................................................... 27
4.2 Machine function .............................................................................................................. 28
4.3 Refrigeration dryer ........................................................................................................... 29
Contents
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4.4 Floating relay contacts ..................................................................................................... 29
4.5 Options ............................................................................................................................. 29
4.5.1 Machine mountings ............................................................................................. 29
4.5.2 Prepared for external heat recovery ................................................................... 30
4.6 Operating modes and control modes ............................................................................... 30
4.6.1 Operating modes ................................................................................................ 30
4.6.2 Control modes .................................................................................................... 31
4.7 Refrigeration Dryer Control Modes .................................................................................. 32
4.8 Safety devices .................................................................................................................. 33
4.9 Keys and LEDs – SIGMA CONTROL BASIC .................................................................. 33
4.10 Functional description – SIGMA CONTROL BASIC ....................................................... 34
4.10.1 Display layout ..................................................................................................... 34
4.10.2 Parameters ......................................................................................................... 35
4.10.3 Messages ........................................................................................................... 36
5 Installation and Operating Conditions
5.1 Ensuring safety ................................................................................................................ 37
5.2 Installation conditions ....................................................................................................... 37
5.2.1 Determining location and clearances .................................................................. 37
5.2.2 Ensuring the machine room ventilation ............................................................... 38
5.2.3 Exhaust duct design ........................................................................................... 39
5.3 Operating the machine in a compressed air network ....................................................... 39
6 Installation
6.1 Ensuring safety ................................................................................................................ 40
6.2 Reporting Transport Damage ........................................................................................... 41
6.3 Connecting the machine with the compressed air network .............................................. 41
6.4 Connecting the power supply ........................................................................................... 41
6.4.1 Refrigeration dryer: Connecting the transformer according to the mains
supply. ................................................................................................................
42
6.5 Connecting the Condensate Drain ................................................................................... 42
6.6 Connecting the remote LOAD-IDLE control ..................................................................... 43
6.7 Options ............................................................................................................................. 44
6.7.1 Anchoring the machine ....................................................................................... 44
6.7.2 Connecting the external heat recovery system ................................................... 44
7 Initial Start-up
7.1 Ensuring safety ................................................................................................................ 45
7.2 Instructions to be observed before commissioning or re-commissioning ......................... 46
7.3 Checking installation and operating conditions ................................................................ 46
7.4 Setting the overload protection cut-out ............................................................................ 47
7.5 Pouring cooling oil into the airend .................................................................................... 47
7.6 Activating and deactivating the MODULATING control .................................................... 48
7.7 Checking the Door Interlock Switch ................................................................................. 49
7.8 Starting the machine for the first time .............................................................................. 50
7.9 Setting the setpoint pressure ........................................................................................... 50
8 Operation
8.1 Switching On and Off ....................................................................................................... 52
8.1.1 Switching on ....................................................................................................... 52
8.1.2 Switching off ....................................................................................................... 52
8.2 Switching off in an emergency and switching on again .................................................... 53
8.3 Setting parameters ........................................................................................................... 54
8.4 Acknowledging alarm and warning messages ................................................................. 55
9 Fault Recognition and Rectification
9.1 Basic instructions ............................................................................................................. 56
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9.2 Alarm messages (machine shut down) ............................................................................ 56
9.3 Warning messages .......................................................................................................... 57
9.4 Other Faults ..................................................................................................................... 58
10 Maintenance
10.1 Ensuring safety ................................................................................................................ 59
10.2 Following the maintenance plan ....................................................................................... 60
10.2.1 Logging maintenance work ................................................................................. 60
10.2.2 Resetting maintenance interval counters ............................................................ 60
10.2.3 Regular Maintenance Tasks ............................................................................... 60
10.2.4 Cooling oil: Change interval ................................................................................ 61
10.2.5 Regular service tasks ......................................................................................... 62
10.3 Cooler: Cleaning or Renewing the Filter Mats ................................................................. 62
10.4 Control cabinet: Clean or renew the filter mat .................................................................. 63
10.5 Cooler maintenance ......................................................................................................... 64
10.6 Maintaining the external heat recovery system ................................................................ 65
10.7 Air Filter Maintenance ...................................................................................................... 66
10.8 Compressor motor maintenance ...................................................................................... 66
10.9 Maintaining the Drive Belts .............................................................................................. 67
10.10 Testing the pressure relief valve ...................................................................................... 68
10.11 Checking the Excess Temperature Safety Shutdown Function ....................................... 69
10.12 Checking the cooling oil level ........................................................................................... 69
10.13 Venting the machine (de-pressurising) ............................................................................ 70
10.14 Replenishing the cooling oil ............................................................................................. 72
10.14.1 Venting the machine (de-pressurising) ............................................................... 72
10.14.2 Topping up with cooling oil and trial run ............................................................. 73
10.15 Changing the cooling oil ................................................................................................... 74
10.16 Changing the oil filter ....................................................................................................... 77
10.17 Changing the oil separator cartridge ................................................................................ 78
10.18 Refrigeration Dryer Maintenance ..................................................................................... 80
10.18.1 Cleaning the refrigerant condenser .................................................................... 80
10.18.2 Checking the condensate drain .......................................................................... 80
10.18.3 Condensate drain maintenance .......................................................................... 81
10.19 Documenting maintenance and service work .................................................................. 83
11 Spares, Operating Materials, Service
11.1 Note the Nameplate ......................................................................................................... 84
11.2 Ordering consumable parts and operating fluids/materials .............................................. 84
11.3 KAESER AIR SERVICE .................................................................................................. 84
11.4 Service Addresses ........................................................................................................... 85
11.5 Spare Parts for Service and Repair ................................................................................. 85
12 Decommissioning, Storage and Transport
12.1 Putting Out of Operation .................................................................................................. 90
12.2 Packing ............................................................................................................................ 90
12.3 Storage ............................................................................................................................. 90
12.4 Transport .......................................................................................................................... 91
12.4.1 Safety .................................................................................................................. 91
12.4.2 Transport with a forklift truck ............................................................................... 91
12.4.3 Transport with a crane ........................................................................................ 91
12.5 Disposal ........................................................................................................................... 92
13 Annex
13.1 Pipeline and instrument flow diagram (P+I diagram) ....................................................... 93
13.2 Pipeline and instrument flow diagram (P&I diagram) MODULATING control .................. 99
13.3 Dimensional drawing ........................................................................................................ 105
Contents
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13.4 Electrical Diagram ............................................................................................................ 108
Contents
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Fig. 1 Maximum relative humidity of intake air ..................................................................................... 6
Fig. 2 Location of safety signs .............................................................................................................. 23
Fig. 3 Enclosure overview .................................................................................................................... 27
Fig. 4 Machine layout ........................................................................................................................... 28
Fig. 5 Refrigeration dryer ...................................................................................................................... 29
Fig. 6 Machine mountings .................................................................................................................... 29
Fig. 7 Keys – overview ......................................................................................................................... 33
Fig. 8 Indicators .................................................................................................................................... 34
Fig. 9 Recommended machine placement and dimensions [mm] ........................................................ 38
Fig. 10 Compressed pipework ................................................................................................................ 41
Fig. 11 Condensate drain dimensions [mm] ........................................................................................... 43
Fig. 12 Connections SIGMA CONTROL BASIC ................................................................................... 43
Fig. 13 Inlet valve filling port ................................................................................................................... 48
Fig. 14 MODULATING control: Setting the shut-off valve ...................................................................... 49
Fig. 15 Location of the interlock switch .................................................................................................. 49
Fig. 16 Switching On and Off ................................................................................................................. 52
Fig. 17 Switching off in an emergency ................................................................................................... 53
Fig. 18 Acknowledging messages .......................................................................................................... 55
Fig. 19 Filter mat for the air and oil cooler .............................................................................................. 63
Fig. 20 Switching cabinet ventilation ...................................................................................................... 64
Fig. 21 Filter mat for the air and oil cooler .............................................................................................. 65
Fig. 22 Air filter maintenance .................................................................................................................. 66
Fig. 23 Drive Belt Maintenance .............................................................................................................. 67
Fig. 24 Checking the cooling oil level ..................................................................................................... 70
Fig. 25 Venting the machine ................................................................................................................... 71
Fig. 26 Replenishing the cooling oil ........................................................................................................ 72
Fig. 27 Changing the cooling oil, oil separator tank ............................................................................... 75
Fig. 28 Changing the cooling oil, heat recovery system ......................................................................... 76
Fig. 29 Changing the oil filter .................................................................................................................. 77
Fig. 30 Changing the oil separator cartridge .......................................................................................... 79
Fig. 31 Refrigeration dryer ...................................................................................................................... 80
Fig. 32 Checking condensate drainage .................................................................................................. 81
Fig. 33 Condensate drain maintenance ................................................................................................. 82
Fig. 34 Transport with a forklift truck ...................................................................................................... 91
Fig. 35 Transport with a crane ................................................................................................................ 92
List of Illustrations
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List of Illustrations
vi Service Manual Screw Compressor
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Tab. 1 Danger levels and their definition (personal injury) .................................................................... 1
Tab. 2 Danger levels and their definition (damage to property) ............................................................ 2
Tab. 3 Nameplate .................................................................................................................................. 4
Tab. 4 Options ....................................................................................................................................... 4
Tab. 5 Machine weight .......................................................................................................................... 5
Tab. 6 Temperature ............................................................................................................................... 5
Tab. 7 Ambient conditions ..................................................................................................................... 5
Tab. 8 Overview Ventilation (50Hz) ....................................................................................................... 6
Tab. 9 Overview Ventilation (60Hz) ....................................................................................................... 6
Tab. 10 Pressure relief valve activating pressure (50Hz) ........................................................................ 7
Tab. 11 Pressure relief valve activating pressure (60Hz) ........................................................................ 7
Tab. 12 Delivery (50 Hz) .......................................................................................................................... 7
Tab. 13 Delivery (60 Hz) .......................................................................................................................... 7
Tab. 14 Noise emission [dB(A)] ............................................................................................................... 8
Tab. 15 Drive motor ................................................................................................................................. 8
Tab. 16 Drive motor: nominal speed at 50 Hz ......................................................................................... 8
Tab. 17 Drive motor: nominal speed at 60 Hz ......................................................................................... 8
Tab. 18 Cooling oil recommendation ....................................................................................................... 9
Tab. 19 Cooling oil recommendation (food processing) .......................................................................... 9
Tab. 20 Cooling oil recommendation (machines for snow cannons) ....................................................... 10
Tab. 21 Cooling oil charge (Option K1) ................................................................................................... 10
Tab. 22 Cooling oil charge (Option W1) .................................................................................................. 11
Tab. 23 Mains supply 200V/3/50Hz ......................................................................................................... 12
Tab. 24 Mains supply 230V/3/50Hz ......................................................................................................... 12
Tab. 25 Mains supply 400V/3/50Hz ......................................................................................................... 12
Tab. 26 Supply conditions at 400V/3/50Hz ............................................................................................. 13
Tab. 27 Mains supply 230V/3/60Hz ......................................................................................................... 13
Tab. 28 Mains supply 380V/3/60Hz ......................................................................................................... 13
Tab. 29 Mains supply 440V/3/60Hz ......................................................................................................... 13
Tab. 30 Mains supply 460V/3/60Hz ......................................................................................................... 13
Tab. 31 Heat capacity (option W1) .......................................................................................................... 14
Tab. 32 Refrigeration dryer: Model .......................................................................................................... 14
Tab. 33 Refrigeration dryer: Compressed air system .............................................................................. 14
Tab. 34 Refrigeration dryer: Refrigerant circuit ....................................................................................... 15
Tab. 35 Inspection intervals according to regulations ............................................................................. 18
Tab. 36 Danger Areas ............................................................................................................................. 23
Tab. 37 Safety signs ................................................................................................................................ 24
Tab. 38 Energy-efficient control modes ................................................................................................... 31
Tab. 39 Operating modes under MODULATING control ......................................................................... 32
Tab. 40 Refrigeration dryer control modes .............................................................................................. 32
Tab. 41 Keys ........................................................................................................................................... 33
Tab. 42 Indicators .................................................................................................................................... 34
Tab. 43 Display ........................................................................................................................................ 34
Tab. 44 Parameters ................................................................................................................................. 35
Tab. 45 Re-commissioning after storage ................................................................................................. 46
Tab. 46 Installation conditions checklist .................................................................................................. 46
Tab. 47 MODULATING control: Setting the shut-off valve ...................................................................... 48
Tab. 48 Switching off with/without run-on time. ....................................................................................... 53
Tab. 49 Alarm indications ........................................................................................................................ 56
Tab. 50 Warning messages ..................................................................................................................... 57
Tab. 51 Other faults and actions ............................................................................................................. 58
Tab. 52 Regular Maintenance Tasks ....................................................................................................... 60
Tab. 53 Cooling oil: Change intervals ...................................................................................................... 62
Tab. 54 Regular service tasks ................................................................................................................. 62
List of Tables
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Tab. 55 Permissible cooling oil level under LOAD ................................................................................. 69
Tab. 56 Logged maintenance tasks ........................................................................................................ 83
Tab. 57 Consumable parts ...................................................................................................................... 84
List of Tables
viii Service Manual Screw Compressor
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1 Regarding this document
1.1 Using this document
The operating manual is a component of the product. It describes the machine as it was at the time
of first delivery after manufacture.
➤ Keep the operating manual in a safe place throughout the life of the machine.
➤ Supply any successive owner or user with this operating manual.
➤ Please insert any amendment or revision of the operating manual sent to you.
➤ Enter details from the machine nameplate and individual items of equipment in the table in
chapter 2.
1.2 Further documents
Further documents included with this operating manual are:
■ Certificate of acceptance / operating instructions for the pressure vessel
■ Declaration of Conformity in accordance with the applicable directive
Missing documents can be requested from KAESER.
➤ Make sure all documents are complete and observe the instructions contained in them.
➤ Make sure you provide the data from the nameplate when ordering documents.
1.3 Copyright
This service manual is copyright protected. Queries regarding use or duplication of the documenta‐
tion should be referred to KAESER. Correct use of information will be fully supported.
1.4 Symbols and labels
➤ Please note the symbols and labels used in this document.
1.4.1 Warnings
Warning notices indicate dangers that may result in injury when disregarded.
Warning notices indicate three levels of danger identified by the corresponding signal word:
Signal term Meaning Consequences of disregard
DANGER Warns of an imminent danger Will result in death or severe injury
WARNING Warns of a potentially imminent danger May result in death or severe injury
CAUTION 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:
1 Regarding this document
1.1 Using this document
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DANGER
The type and source of the imminent danger is shown here!
The possible consequences of ignoring a warning are shown here.
If you ignore the warning notice, the "DANGER" signal word indicates a lethal or severe in‐
jury will occur.
➤ The measures required to protect yourself from danger are shown here.
Warning notes referring to a sub-section or the subsequent action are integrated into the procedure
and numbered as an action.
Example:
1. WARNING!
The type and source of the imminent danger is shown here!
The possible consequences of ignoring a warning are shown here.
If you ignore the warning notice, the "WARNING" signal word indicates that a lethal or severe
injury may occur.
➤ The measures required to protect yourself from danger are shown here.
2. Always read and comply with warning instructions.
1.4.2 Potential damage warnings
Contrary to the warnings shown above, damage warnings do not indicate a potential personal in‐
jury.
Warning notices for damages are identified by their signal term.
Signal term Meaning Consequences of disregard
NOTICE Warns of a potentially dangerous situation Damage to property is possible
Tab. 2 Danger levels and their definition (damage to property)
Example:
NOTICE
The type and source of the imminent danger is shown here!
Potential effects when ignoring the warning are indicated here.
➤ 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.
1 Regarding this document
1.4 Symbols and labels
2Service Manual Screw Compressor
ASK T SIGMA CONTROL BASIC 9_5717 20 E

Material Here you will find details on special tools, operating materials or spare parts.
Precondition Here you will find conditional requirements necessary to carry out the task.
The conditions relevant to safety shown here will help you to avoid dangerous situations.
➤ This symbol denotes lists of actions comprising one stage of a task.
Operating instructions with several steps are numbered in the sequence of the operating steps.
Information relating to one option only are marked with an option code (e.g., H1 indicates that
this section applies only to machines with screw-in machine feet). Option codes used in this
service manual are explained in chapter 2.2.
Information referring to potential problems are identified by a question mark.
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.
1 Regarding this document
1.4 Symbols and labels
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ASK T SIGMA CONTROL BASIC 3
Option H1

2 Technical Specifications
2.1 Nameplate
The machine's nameplate provides the model designation and important technical information.
The nameplate is located on the outside of the machine:
■ above the cooler,
or
■ on the rear of the machine.
➤ Enter here the nameplate data as a reference:
Feature Value
Rotary Screw Compressor
Part No.
Serial No.
Year of manufacture
Rated power
Rated motor speed
Maximum working pressure
Ambient temperature
Tab. 3 Nameplate
2.2 Options
The table contains a list of possible options.
➤ Enter options here as a reference.
Option Option code Exists?
Modulating control C1
Adjustable machine feet H1
Air cooling K1
Transformer power supply for refrigeration dryer T2
Refrigeration dryer T3
Prepared for heat recovery W1
Tab. 4 Options
2.3 Weight
The weight given is the maximum. Actual weights of individual machines are dependent on equip‐
ment fitted.
2 Technical Specifications
2.1 Nameplate
4Service Manual Screw Compressor
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ASK 27 ASK 32 ASK 35
Weight [kg] 465 480 495
Tab. 5 Machine weight
2.4 Temperature
ASK 27 ASK 32 ASK 35
Minimum cut-in tempera‐
ture [°C]
3 3 3
Typical airend discharge
temperature during oper‐
ation [°C]
65 – 100 65 – 100 65 – 100
Maximum airend dis‐
charge temperature (au‐
tomatic safety shut-down)
[°C]
110 110 110
Tab. 6 Temperature
2.5 Ambient conditions
ASK 27 ASK 32 ASK 35
Maximum elevation amsl
[m]
1000 1000 1000
Permissible ambient tem‐
perature [°C]
3 – 45 3 – 45 3 – 45
Cooling air temperature
[°C]
3 – 45 3 – 45 3 – 45
Intake air temperature
[°C]
3 – 45 3 – 45 3 – 45
* Higher altitudes are permissible only after consultation with the manufacturer.
Tab. 7 Ambient conditions
2 Technical Specifications
2.4 Temperature
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Fig. 1 Maximum relative humidity of intake air
TIntake air temperature [°C]
HMaximum relative humidity of intake air [%]
2.6 Ventilation
The values given are minimum guide values.
Mains frequency: 50 Hz
ASK 27 ASK 32 ASK 35
Inlet aperture Z see fig‐
ure 9 [m2]
0.5 0.6 0.7
Forced ventilation with
exhaust fan:
Flow rate [m3/h] at 100
Pa
7500 8500 9500
Tab. 8 Overview Ventilation (50Hz)
Mains frequency: 60 Hz
ASK 27 ASK 32 ASK 35
Inlet aperture Z see fig‐
ure 9 [m2]
0.6 0.6 0.7
Forced ventilation with
exhaust fan:
Flow rate [m3/h] at 100
Pa
8000 9000 10000
Tab. 9 Overview Ventilation (60Hz)
2.7 Pressure
Maximum working pressure: see nameplate
2 Technical Specifications
2.6 Ventilation
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Pressure relief valve activating pressure at 50Hz [bar]
Maximum working over‐
pressure [bar]
ASK 27 ASK 32 ASK 35
8.0 10 10 10
11.0 13 13 13
15.0 16* 16* 16*
* China: 15.9
Tab. 10 Pressure relief valve activating pressure (50Hz)
Pressure relief valve activating pressure at 60 Hz [bar]
Maximum working over‐
pressure [bar]
ASK 27 ASK 32 ASK 35
8.5 10 10 10
11.0 13 13 13
15.0 16 16 16
Tab. 11 Pressure relief valve activating pressure (60Hz)
2.8 Delivery
Delivery [m3/min] at 50 Hz mains frequency
Maximum working pres‐
sure [bar]
ASK 27 ASK 32 ASK 35
8.0 2.60 3.15 3.50
11.0 2.17 2.65 2.95
15.0 1.68 2.03 2.35
Tab. 12 Delivery (50 Hz)
Delivery [m3/min] at 60 Hz mains frequency
Maximum working pres‐
sure [bar]
ASK 27 ASK 32 ASK 35
8.5 2.60 3.15 3.50
11.0 2.17 2.65 2.95
15.0 1.68 2.03 2.35
Tab. 13 Delivery (60 Hz)
2 Technical Specifications
2.8 Delivery
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2.9 Noise emission [dB(A)]
Mains frequency ASK 27 ASK 32 ASK 35
50 Hz 65 67 69
60 Hz 67 69 71
Noise pressure level as per ISO 2151 and the basic standard ISO 9614-2, tolerance: ±3 dB(A) at
maximum machine working pressure
Tab. 14 Noise emission [dB(A)]
2.10 Motors and Power
2.10.1 Drive motor
ASK 27 ASK 32 ASK 35
Rated power [kW] 15.0 18.5 22.0
Enclosure protection IP 55 IP 55 IP 55
Tab. 15 Drive motor
Rated speed [min-1] (50 Hz mains frequency):
Maximum working pres‐
sure [bar]
ASK 27 ASK 32 ASK 35
8.0 2945 2950 2940
11.0 2945 2950 2940
15.0 2945 2950 2940
Tab. 16 Drive motor: nominal speed at 50 Hz
Rated speed [min-1] (60 Hz mains frequency):
Maximum working pres‐
sure [bar]
ASK 27 ASK 32 ASK 35
8.5 3555 3560 3555
11.0 3555 3560 3555
15.0 3555 3560 3555
Tab. 17 Drive motor: nominal speed at 60 Hz
2.11 Cooling oil recommendation
A sticker showing the type of oil filled is to be found near the oil separator filling port.
Information on ordering cooling oil is found in chapter 11.
2 Technical Specifications
2.9 Noise emission [dB(A)]
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Cooling oils for general applications
SIGMA FLUID
MOL S-460 S-570
Description Mineral oil Silicone-free
synthetic oil
Synthetic oil
Application: Standard oil for all appli‐
cations except in con‐
nection with foodstuffs.
Particularly suitable for
machines with a low du‐
ty cycle.
Standard oil for all applications
except in connection with food‐
stuffs.
Particularly suitable for ma‐
chines with a high duty cycle.
Not suitable for East- / South-
East-Asian countries.
Standard oil for East- /
South-East-Asian coun‐
tries, suitable for all ap‐
plications except food
processing.
Particularly suitable for
machines with a high
duty cycle.
Approval — — —
Viscosity at
40°°C
44 mm2/s
(DIN 51562-1)
45 mm2/s
(D 445; ASTM test)
52.8 mm2/s
(D 445; ASTM test)
Viscosity at
100 °C
6.8 mm2/s
(DIN 51562-1)
7.2 mm2/s
(D 445; ASTM test)
8.0 mm2/s
(D 445; ASTM test)
Flash point 220 °C
(ISO 2592)
238 °C
(D 92; ASTM test)
258 °C
(D 92; ASTM test)
Density at
15 °C
—864 kg/m3
(ISO 12185)
0.869 kg/l
(D 1298; ASTM test)
Pour point −33 °C
(ISO 3016)
−46 °C
(D 97; ASTM test)
−54 °C
(D 97; ASTM test)
Demulsibility
at 54 °C
— 40/40/0/10 min
(D 1401; ASTM test)
15 min
(D 1401; ASTM test)
Tab. 18 Cooling oil recommendation
Cooling oils for applications in food processing
SIGMA FLUID
FG-460 FG-680
Description Synthetic oil Synthetic oil
Application Specifically for applications where the
compressed air comes into contact
with foodstuffs.
Specifically for applications where the
compressed air comes into contact
with foodstuffs.
Approval USDA H–1, NSF
Approved for the manufacture of food
packaging, meat and poultry process‐
ing and other food processing appli‐
cations.
USDA H–1, NSF
Approved for the manufacture of food
packaging, meat and poultry process‐
ing and other food processing appli‐
cations.
Viscosity at 40°°C 50.7 mm2/s
(D 445; ASTM test)
70.0 mm2/s
(D 445; ASTM test)
Viscosity at
100 °C
8.2 mm2/s
(D 445; ASTM test)
10.4 mm2/s
(D 445; ASTM test)
2 Technical Specifications
2.11 Cooling oil recommendation
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Service Manual Screw Compressor
ASK T SIGMA CONTROL BASIC 9

SIGMA FLUID
FG-460 FG-680
Flash point 245 °C
(D 92; ASTM test)
245 °C
(D 92; ASTM test)
Density at 15 °C — —
Pour point — —
Demulsibility at
54 °C
— —
Tab. 19 Cooling oil recommendation (food processing)
Cooling oils for the operation with snow cannons
SIGMA FLUID
PANOLIN HLP SYNTH 46
Description Saturated synthetic ester with additives (mineral oil free).
Easily biologically degradable as per OECD criteria.
Application Specifically designed for machines intended for the operation with snow
cannons.
Approval —
Viscosity at 40°°C 47 mm2/s
Viscosity at
100 °C
8.1 mm2/s
Flash point > 210 °C
Density at 15 °C 0.92 g/ml
Pour point –35 °C
Demulsibility at 54 °C —
Tab. 20 Cooling oil recommendation (machines for snow cannons)
2.12 Cooling oil charge
For machines with the Option W1, the volume required additionally for the heat recovery must be
added to the charge.
ASK 27 ASK 32 ASK 35
Fluid volume* [litre] 11 11 11
Topping up volume [litres]
(minimum–maximum)
2 2 2
* Plus the oil volume of the heat recovery system.
Tab. 21 Cooling oil charge (Option K1)
2 Technical Specifications
2.12 Cooling oil charge
10 Service Manual Screw Compressor
ASK T SIGMA CONTROL BASIC 9_5717 20 E