KAESER ASD T Series User manual

Service Manual
Screw Compressor
ASD T Tri-Voltage
9_5721 06 USE

Original instructions
/KKW/SASD 1.00 en 01 SBA-SCHRAUBEN-TRI-VOLTAGE-T-SC

1Regarding this Document
1.1 Using the Document ......................................................................................................... 1
1.2 Additional Documents ...................................................................................................... 1
1.3 Copyright .......................................................................................................................... 1
1.4 Symbols and Identification ............................................................................................... 1
1.4.1 Warnings ............................................................................................................. 1
1.4.2 Other instructions and symbols .......................................................................... 2
2Technical Data
2.1 Nameplate ........................................................................................................................ 3
2.2 Options ............................................................................................................................. 3
2.3 Weight .............................................................................................................................. 4
2.4 Temperature ..................................................................................................................... 4
2.5 Ambient Conditions .......................................................................................................... 4
2.6 Ventilation ........................................................................................................................ 5
2.7 Pressure ........................................................................................................................... 5
2.8 Delivery ............................................................................................................................ 6
2.9 Cooling Oil Recommendation .......................................................................................... 6
2.9.1 Basic Information ................................................................................................ 6
2.9.2 KAESER Lubricants ............................................................................................ 6
2.10 Cooling Oil Volume .......................................................................................................... 7
2.11 Motors and Power ............................................................................................................ 8
2.11.1 Drive motor ......................................................................................................... 8
2.11.2 Fan motor ........................................................................................................... 8
2.12 Sound Pressure Level ...................................................................................................... 8
2.13 Power Supply ................................................................................................................... 9
2.14 Power Supply specifications ............................................................................................ 9
2.15 Heat Recovery ................................................................................................................. 10
2.15.1 Prepared for external heat recovery ................................................................... 10
2.15.2 Internal heat recovery ......................................................................................... 11
2.16 Refrigeration dryer ........................................................................................................... 12
3Safety and Responsibility
3.1 Basic Information ............................................................................................................. 14
3.2 Specified Use ................................................................................................................... 14
3.3 Improper Use ................................................................................................................... 14
3.4 User's Responsibilities ..................................................................................................... 14
3.4.1 Observe statutory and universally accepted regulations .................................... 14
3.4.2 Qualified personnel ............................................................................................. 15
3.4.3 Adhere to Inspection Schedules and Accident Prevention Regulations. ............ 15
3.5 Dangers ............................................................................................................................ 15
3.5.1 Safely Dealing with Sources of Danger .............................................................. 16
3.5.2 Safe Machine Operation ..................................................................................... 18
3.5.3 Organizational Measures .................................................................................... 18
3.5.4 Danger Areas ...................................................................................................... 18
3.6 Safety Devices ................................................................................................................. 19
3.7 Safety Signs ..................................................................................................................... 19
3.8 In Emergency ................................................................................................................... 21
3.8.1 Fire fighting ......................................................................................................... 21
3.8.2 Remove any compressor cooling oil from your person. ...................................... 22
3.8.3 Injury from Handling Refrigerant ......................................................................... 22
3.9 Warranty ........................................................................................................................... 22
3.10 Environmental Protection ................................................................................................. 23
4Design and Function
4.1 Enclosure ......................................................................................................................... 24
Contents
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4.2 Functional Description of the Machine ............................................................................. 24
4.3 Refrigeration dryer ........................................................................................................... 26
4.4 Floating relay contacts ..................................................................................................... 26
4.5 Options ............................................................................................................................. 26
4.5.1 Machine mountings ............................................................................................. 26
4.5.2 Cooling air filter mat ............................................................................................ 27
4.5.3 Heat Recovery .................................................................................................... 27
4.5.4 Optional Filter Monitoring Set ............................................................................. 27
4.6 Operating States and Control Modes ............................................................................... 28
4.6.1 Operating states of the machine ......................................................................... 28
4.6.2 Control modes .................................................................................................... 28
4.7 Refrigeration Dryer Control Modes .................................................................................. 29
4.8 Safety Devices ................................................................................................................. 30
4.9 SIGMA CONTROL Keys and Indicators .......................................................................... 30
5Installation and Operating Conditions
5.1 Safety ............................................................................................................................... 32
5.2 Installation Conditions ...................................................................................................... 32
5.2.1 Place of installation and distances ...................................................................... 32
5.2.2 Ensure adequate ventilation ............................................................................... 33
5.2.3 Exhaust duct design ........................................................................................... 33
5.3 Using the Compressor to Supply A Compressed Air System. ......................................... 34
6Installation
6.1 Safety ............................................................................................................................... 35
6.2 Reporting Transport Damage ........................................................................................... 35
6.3 Making the Compressed Air Connection .......................................................................... 35
6.4 Connecting the condensate drain .................................................................................... 36
6.5 Making the Power Supply Connection ............................................................................. 37
6.5.1 Changing main voltage connections ................................................................... 37
6.6 Refrigeration dryer: Connecting the transformer according to the power supply. ............ 39
6.7 Options ............................................................................................................................. 39
6.7.1 Anchoring the machine ....................................................................................... 39
7Initial Start-up
7.1 Safety ............................................................................................................................... 40
7.2 To be noted before commissioning .................................................................................. 40
7.3 Checking Installation and Operating Conditions .............................................................. 41
7.4 Setting the Overload Protection Cut-Out .......................................................................... 42
7.5 Setting the Motor Overload Protection Switch ................................................................. 42
7.6 Pouring Cooling Oil into the Airend .................................................................................. 42
7.7 Check Direction of Rotation ............................................................................................. 43
7.8 Starting the machine for the first time .............................................................................. 43
7.9 Setting the Setpoint Pressure .......................................................................................... 44
7.10 Changing the display language ........................................................................................ 44
8Operation
8.1 Switching On and Off ....................................................................................................... 46
8.1.1 Switching on ....................................................................................................... 46
8.1.2 Shutdown ............................................................................................................ 46
8.2 Switching Off in an Emergency and Switching On again ................................................. 47
8.3 Remote On and Off Switching .......................................................................................... 47
8.4 Switching On and Off with the Clock ................................................................................ 48
8.5 Acknowledging Alarm and Warning Messages ................................................................ 49
9Fault Recognition and Rectification
9.1 Basic Information ............................................................................................................. 51
Contents
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9.2 Alarm messages (machine shut-down) ............................................................................ 51
9.3 Warning messages (yellow LED lights) ............................................................................ 54
9.4 Other Faults ..................................................................................................................... 58
10 Maintenance
10.1 Safety ............................................................................................................................... 60
10.2 Maintenance Schedule ..................................................................................................... 60
10.2.1 Logging maintenance work ................................................................................. 60
10.2.2 Resetting maintenance interval counters ............................................................ 61
10.2.3 Regular maintenance tasks ................................................................................ 61
10.2.4 Cooling oil changing interval ............................................................................... 62
10.2.5 Regular Service Work ......................................................................................... 62
10.3 Cooler: Cleaning or Renewing the Filter Mats ................................................................. 63
10.4 Cleaning or Replacing the Control Cabinet Filter Mats .................................................... 64
10.5 Cooler Maintenance ......................................................................................................... 64
10.6 Heat Recovery System Maintenance ............................................................................... 65
10.6.1 External heat recovery ........................................................................................ 66
10.6.2 Internal heat recovery ......................................................................................... 66
10.7 Air Filter Maintenance ...................................................................................................... 66
10.8 Motor Maintenance .......................................................................................................... 67
10.9 Checking the Coupling ..................................................................................................... 68
10.10 Checking the Safety Relief Valve ..................................................................................... 69
10.11 Checking the Overheating Safety Shutdown Function ..................................................... 69
10.12 Checking the cooling oil level ........................................................................................... 69
10.13 Venting the machine (depressurizing) .............................................................................. 70
10.14 Topping up the Cooling Oil ............................................................................................... 72
10.14.1 Venting the Machine (depressurizing) ................................................................ 72
10.14.2 Top up with cooling oil and test run .................................................................... 73
10.15 Changing the Cooling Oil ................................................................................................. 74
10.16 Changing the Oil Filter ..................................................................................................... 78
10.17 Changing the Oil Separator Cartridge .............................................................................. 79
10.18 Refrigeration Dryer Maintenance ..................................................................................... 81
10.18.1 Cleaning the refrigerant condenser .................................................................... 81
10.18.2 Checking condensate drainage .......................................................................... 82
10.18.3 Condensate drain maintenance .......................................................................... 82
10.19 Document maintenance and service work. ...................................................................... 84
11 Spares, Operating Materials, Service
11.1 Note the nameplate .......................................................................................................... 85
11.2 Ordering Consumable Parts and Operating Materials ..................................................... 85
11.3 SIGMA AIR SERVICE ...................................................................................................... 85
11.4 Service Addresses ........................................................................................................... 86
11.5 Spare Parts for Service and Repair ................................................................................. 86
12 Decommissioning, Storage and Transport
12.1 Putting Out of Operation .................................................................................................. 89
12.2 Packing ............................................................................................................................ 89
12.3 Storage ............................................................................................................................. 89
12.4 Transporting ..................................................................................................................... 90
12.4.1 Safety .................................................................................................................. 90
12.4.2 Transporting with a forklift ................................................................................... 90
12.4.3 Transporting with a crane ................................................................................... 90
12.5 Disposal ........................................................................................................................... 91
13 Annex
13.1 Pipeline and instrument flow diagram (P+I diagram) ....................................................... 92
Contents
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13.2 Pipe and Instrument Flow Diagram (P+I diagram): MODULATING control mode ........... 98
13.3 Dimensional Drawing ....................................................................................................... 104
13.4 Electrical Diagram ............................................................................................................ 107
Contents
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Fig. 1 Maximum relative humidity ......................................................................................................... 5
Fig. 2 Three-phase star (wye); 4 wire; grounded neutral ..................................................................... 9
Fig. 3 Three-phase star (wye); 3 wire; grounded neutral ..................................................................... 9
Fig. 4 Location of safety signs .............................................................................................................. 20
Fig. 5 Enclosure ................................................................................................................................... 24
Fig. 6 Machine layout ........................................................................................................................... 25
Fig. 7 Refrigeration dryer ...................................................................................................................... 26
Fig. 8 Machine mountings .................................................................................................................... 26
Fig. 9 Cooling air filter mat (option K3) ................................................................................................. 27
Fig. 10 Internal heat recovery (option W2/W3) ....................................................................................... 27
Fig. 11 Keys ........................................................................................................................................... 30
Fig. 12 Indicators .................................................................................................................................... 31
Fig. 13 Recommended installation and dimensions [inch] ..................................................................... 33
Fig. 14 Compressed air connection ........................................................................................................ 36
Fig. 15 Condensate drain dimensions [inch] .......................................................................................... 36
Fig. 16 Inlet valve filling port ................................................................................................................... 42
Fig. 17 Coupling ..................................................................................................................................... 43
Fig. 18 Label: Changing the display language ....................................................................................... 45
Fig. 19 Switching on and off ................................................................................................................... 46
Fig. 20 Switching off in an emergency ................................................................................................... 47
Fig. 21 Switching on and off in remote ................................................................................................... 48
Fig. 22 Switching on and off with the clock ............................................................................................ 49
Fig. 23 Acknowledging/resetting messages ........................................................................................... 50
Fig. 24 Filter mat for the air and oil cooler .............................................................................................. 63
Fig. 25 Control cabinet ventilation grill ................................................................................................... 64
Fig. 26 Cleaning the cooler .................................................................................................................... 65
Fig. 27 Air filter maintenance .................................................................................................................. 67
Fig. 28 Checking the coupling ................................................................................................................ 68
Fig. 29 Checking the cooling oil level ..................................................................................................... 70
Fig. 30 Venting the machine ................................................................................................................... 71
Fig. 31 Topping up the Cooling Oil ......................................................................................................... 72
Fig. 32 Changing the cooling oil, oil separator tank ............................................................................... 75
Fig. 33 Changing the cooling oil, oil cooler ............................................................................................. 76
Fig. 34 Changing the cooling oil, airend ................................................................................................. 77
Fig. 35 Changing the cooling oil, heat recovery system ......................................................................... 78
Fig. 36 Changing the oil filter .................................................................................................................. 79
Fig. 37 Changing the Oil Separator Cartridge ........................................................................................ 80
Fig. 38 Refrigeration dryer ...................................................................................................................... 81
Fig. 39 Checking condensate drainage .................................................................................................. 82
Fig. 40 Condensate drain maintenance ................................................................................................. 83
Fig. 41 Transporting with a forklift .......................................................................................................... 90
Fig. 42 Transporting with a crane ........................................................................................................... 91
List of Illustrations
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List of Illustrations
vi
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Tab. 1 The levels of danger and their meaning ..................................................................................... 1
Tab. 2 Nameplate .................................................................................................................................. 3
Tab. 3 Options ....................................................................................................................................... 3
Tab. 4 Machine weight .......................................................................................................................... 4
Tab. 5 Temperature ............................................................................................................................... 4
Tab. 6 Ambient Conditions .................................................................................................................... 4
Tab. 7 Ventilation ................................................................................................................................... 5
Tab. 8 Safety relief valve setting ........................................................................................................... 5
Tab. 9 Delivery ...................................................................................................................................... 6
Tab. 10 Cooling Oil Charge ..................................................................................................................... 7
Tab. 11 Cooling oil charge (option W1) ................................................................................................... 7
Tab. 12 Cooling oil charge (option W2) ................................................................................................... 7
Tab. 13 Cooling oil charge (option W3) ................................................................................................... 7
Tab. 14 Drive motor ................................................................................................................................. 8
Tab. 15 Drive motor rated speed ............................................................................................................. 8
Tab. 16 Fan motor .................................................................................................................................. 8
Tab. 17 Sound Pressure Level ................................................................................................................ 9
Tab. 18 Supply 208V/3/60Hz ................................................................................................................... 10
Tab. 19 Supply 230V/3/60Hz ................................................................................................................... 10
Tab. 20 Supply 460V/3/60Hz ................................................................................................................... 10
Tab. 21 Heat capacity (option W1) .......................................................................................................... 10
Tab. 22 Water quality specification .......................................................................................................... 11
Tab. 23 Heat exchanger specification (option W2/W3) ........................................................................... 11
Tab. 24 Heat capacity (option W2/W3) .................................................................................................... 12
Tab. 25 Flow rate (option W2) ................................................................................................................. 12
Tab. 26 Flow rate (option W3) ................................................................................................................. 12
Tab. 27 Refrigeration dryer: model .......................................................................................................... 12
Tab. 28 Refrigeration dryer: compressed air system ............................................................................... 13
Tab. 29 Refrigeration dryer: refrigeration circuit ...................................................................................... 13
Tab. 30 Danger Areas ............................................................................................................................. 19
Tab. 31 Safety Signs ............................................................................................................................... 20
Tab. 32 Operating states under MODULATING control .......................................................................... 29
Tab. 33 Refrigeration dryer control modes .............................................................................................. 29
Tab. 34 Keys ........................................................................................................................................... 30
Tab. 35 Indicators .................................................................................................................................... 31
Tab. 36 Voltage selection ........................................................................................................................ 37
Tab. 37 Overload protection relay settings. ............................................................................................. 38
Tab. 38 Motor protection switch settings. ................................................................................................ 38
Tab. 39 Re-commissioning after storage ................................................................................................. 41
Tab. 40 Installation conditions checklist .................................................................................................. 41
Tab. 41 Machine identification ................................................................................................................. 48
Tab. 42 Remote control identification ...................................................................................................... 48
Tab. 43 Machine identification ................................................................................................................. 49
Tab. 44 Alarm messages and measures ................................................................................................. 51
Tab. 45 Warning messages ..................................................................................................................... 54
Tab. 46 Other faults and actions ............................................................................................................. 58
Tab. 47 Regular maintenance tasks ........................................................................................................ 61
Tab. 48 Oil change intervals lubricants ................................................................................................... 62
Tab. 49 Regular service work .................................................................................................................. 63
Tab. 50 Logged maintenance tasks ........................................................................................................ 84
Tab. 51 Consumable parts ...................................................................................................................... 85
List of Tables
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List of Tables
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Service Manual Screw Compressor
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1 Regarding this Document
1.1 Using the Document
The service manual is part of the machine.
➤ Keep the service manual in a safe place throughout the life of the machine.
➤ Pass the manual on to the next owner/user of the machine.
➤ Ensure that all amendments received are entered in the manual.
➤ Enter details from the machine nameplate and individual items of equipment in the table in chap‐
ter 2.
1.2 Additional Documents
Included with this service manual are additional documents intended to assist in the safe operation
of the machine:
■ Certificate of acceptance / operating instructions for the pressure vessel.
Missing documents can be requested from KAESER.
➤ Make sure all documents are complete and observe the instructions contained in them.
➤ Make sure you give the data from the nameplate when ordering documents.
1.3 Copyright
This service manual is copyright protected. Queries regarding use or duplication of the documentation
should be referred to KAESER. Correct use of information will be fully supported.
1.4 Symbols and Identification
1.4.1 Warnings
Warning notices indicate three levels of danger signified by the signal word.
■ DANGER
■ WARNING
■ CAUTION
DANGER
These show the kind of danger and its source!
The possible consequences of ignoring a warning are shown here.
The word "Danger" indicates that death or severe injury can result from ignoring the instruction.
➤ The measures required to protect yourself from danger are shown here.
➤ Always read and comply with warning instructions.
Signal word Meaning Consequences of non-observance
DANGER Warns of an imminent threat of danger Death or serious injury may result
WARNING Warns of possible danger Death or serious injury are possible
1Regarding this Document
1.1 Using the Document
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Signal word Meaning Consequences of non-observance
CAUTION Warns of a possibly dangerous situa‐
tion
Light injuries or material damage are possible
Tab. 1 The levels of danger and their meaning
1.4.2 Other instructions and symbols
This symbol refers to particularly important information.
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.
Here conditions relevant to safety are named that will help you to avoid dangerous situations.
➤ This bullet is is placed by lists of actions comprising one stage of a task.
In lists of actions with several stages the sequence of actions is numbered.
Information that refers to only one option is marked with an indicator (e.g.: H1 means that this
section is only valid for machines with adjustable machine mountings). Option indicators 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 ...
➤ ... and a remedy given.
This symbol refers to important information or measures concerning environmental protection.
Further information Here, your attention is drawn to further topics.
1Regarding this Document
1.4 Symbols and Identification
2
Service Manual Screw Compressor
ASD T Tri-Voltage 9_5721 06 USE
Option H1

2 Technical Data
2.1 Nameplate
The model designation and important technical information are given on the machine's nameplate.
The nameplate is located on the outside of the machine:
■ above the cooler
or
■ on the rear of the machine.
➤ Enter data from the nameplate here as reference:
Characteristic Value
Model
Part no.
Year
Serial no.
psig
cfm
Voltage
Hz/RPM
Package FLA
Phase
HP
Wiring Diagram
FOR SERVICE, REFER TO EQUIPMENT NUMBER
Tab. 2 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
Filter monitoring option package C2
Machine mountings H1
Cooling air filter mat K3
Transformer power supply T2
Prepared for heat recovery W1
Heat recovery ΔT=25 K W2
2Technical Data
2.1 Nameplate
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Option Option code Exists?
Heat recovery ΔT=55 K W3
Tab. 3 Options
2.3 Weight
The weight given is the maximum. The actual weight of individual machine is dependent on equipment
fitted.
ASD 25 ASD 30 ASD 40S ASD 40
Weight [lb] 3640 4040 4080 4320
Tab. 4 Machine weight
2.4 Temperature
ASD 25 ASD 30 ASD 40S ASD 40
Minimum cut-in tempera‐
ture [°F]
40 40 40 40
Typical airend discharge
temperature during opera‐
tion [°F]
167–200 167–200 167–200 167–200
Maximum airend dis‐
charge temperature (auto‐
matic safety shut-down)
[°F]
230 230 230 230
Tab. 5 Temperature
2.5 Ambient Conditions
ASD 25 ASD 30 ASD 40S ASD 40
Maximum elevation* [ft.] 3000 3000 3000 3000
Permissible ambient tem‐
perature [°F]
40–115 40–115 40–115 40–115
Cooling air temperature
[°F]
40–115 40–115 40–115 40–115
Inlet air temperature [°F] 40–115 40–115 40–115 40–115
Maximum relative humidi‐
ty of inlet air
see figure 1 see figure 1 see figure 1 see figure 1
* Higher altitudes are permissible only after consultation with the manufacturer
Tab. 6 Ambient Conditions
2Technical Data
2.3 Weight
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Fig. 1 Maximum relative humidity
TInlet air temperature [°F]
HMaximum relative humidity of inlet air [%]
2.6 Ventilation
The values given are minimum guide values.
ASD 25 ASD 30 ASD 40S ASD 40
Inlet aperture Z see fig‐
ure 13 [sq.ft.]
6.5 7.5 8.6 8.6
Forced ventilation with ex‐
haust fan:
Flow rate [cfm] at 0.4 in wc
5297 5886 7063 8240
Exhaust duct:
Dimensions [in]
25 5/8 x 25 5/8 25 5/8 x 25 5/8 25 5/8 x 25 5/8 25 5/8 x 25 5/8
Tab. 7 Ventilation
2.7 Pressure
Maximum working pressure: see nameplate
Safety relief valve blow-off setting [psig]:
Maximum working pres‐
sure [psig]
ASD 25 ASD 30 ASD 40S ASD 40
125 155 155 155 155
175 230 230 230 230
217 232 232 232 232
Tab. 8 Safety relief valve setting
2Technical Data
2.6 Ventilation
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2.8 Delivery
FAD [cfm]:
Maximum working pres‐
sure [psig]
ASD 25 ASD 30 ASD 40S ASD 40
125 112 132 162 191
175 89 110 127 159
217 72 85 106 123
Tab. 9 Delivery
2.9 Cooling Oil Recommendation
A sticker showing the type of oil filled is located near the oil separator filler.
Information for ordering cooling oil can be found in chapter 13.4.
2.9.1 Basic Information
Lubrication of an air compressor is essential to reliable operation. Carbon and varnish can form in
compressor cooling oils. These deposits block the flow of lubricant and cause excessive wear and
failure of moving parts. Contamination of the lubricant can allow the formation of acids, causing ex‐
tensive internal corrosion. Water may be condensed decreasing the lubricity.
Lubricants in rotary compressors do much more than lubricate. During the compression process, it
acts as a sealant in the airend which is important for maximum efficiency. The lubricant also absorbs
much of the heat of compression to cool the airend and reduce the temperature of the compressed
air. It’s not enough that a compressor cooling oil lubricates well, it must stand up to the heat, pressure
and contaminants that are present in every air compressor.
2.9.2 KAESER Lubricants
KAESER synthetic lubricants should be stored in a protected location to prevent contamination. Do
not re-use drums; flush and send to reconditioner.
Although the KAESER synthetic is not highly flammable, it will burn. While KAESER synthetic com‐
pressor cooling oil is less flammable than equal viscosity mineral oils, it cannot be classified as a fire-
resistant fluid. It has a flash point above 460 °F. Since the user has total control over the conditions
of the compressor lubricant, he assumes total responsibility for its safe usage.
Material Safety Data Sheets are available for each lubricant from your authorized KAESER Service
representative.
Regardless of the lubricant selected, the KAESER SIGMA lubricants will separate readily from water.
If condensate occurs it can easily be removed. Let the compressor sit so that any water can drain
back to the separator tank and separate to the bottom. See chapter 10.15 proper draining procedure.
KAESER has several lubricants available that are specially formulated to match these demands. They
feature excellent lubricity, outstanding demulsibility (ability to separate from water), and long life.
M-SERIES:
■ M-Series SIGMA compressor cooling oils are semi-synthetic lubricants.
■ M-Series SIGMA compressor cooling oils are the highest quality petroleum lubricants. M–460 is
specially blended to provide reliable performance in KAESER screw compressors.
2Technical Data
2.8 Delivery
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S-SERIES:
■ S-Series SIGMA compressor cooling oils are synthetic lubricants.
■ S-Series SIGMA compressor cooling oils are formulated from the most advanced synthetic lu‐
bricants. These ”synthetic” lubricants begin as high quality petroleum feed stock. They are then
refined, processed and purified into fluids with very consistent molecular structure. These oils are
carefully blended to produce extremely consistant lubricants with superior properties. SIGMA
synthetic lubricants feature all the advantages of both PAO and diester fluids.
■ S–460 lubricant is recommended for compressors operating in ambient temperatures between
40 °F and 105 °F.
Specialty KAESER LUBRICANTS:
■ S–680 lubricant may be used when ambient temperatures are always between 70 °F and 105 °F.
■ FG–460 synthetic hydrocarbon based food grade lubricant is designed for use in rotary screw
compressors in the application where incidental food contact may occur with the discharge air.
This lubricant meets the requirements of the FDA Regulation 21 CFR §178.3570 and is
USDA H–1 approved and NSF certified. FG–460 is approved for canning, food packing, meat and
poultry processing and other applications where incidental food contact may occur.
2.10 Cooling Oil Volume
Air-Cooling
ASD 25 ASD 30 ASD 40S ASD 40
Total charge [gal] 4.2 4.2 4.2 4.2
Top-up quantity [quart]
(Minimum–Maximum)
2.1 2.1 2.1 2.1
Tab. 10 Cooling Oil Charge
Heat Recovery
The charge of cooling oil for machines with heat recovery is increased by the volume of oil in
the heat exchanger and connecting lines.
ASD 25 ASD 30 ASD 40S ASD 40
Additional charge volume
[quart]*
* Enter the volume required by your heat recovery system.
Tab. 11 Cooling oil charge (option W1)
ASD 25 ASD 30 ASD 40S ASD 40
Additional charge volume
[quart]
1.2 1.8 1.8 1.8
Tab. 12 Cooling oil charge (option W2)
2Technical Data
2.10 Cooling Oil Volume
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Option K1
Option W1/W2/W3
Option W1
Option W2
Option W3

ASD 25 ASD 30 ASD 40S ASD 40
Additional charge volume
[quart]
1.2 1.8 1.8 1.8
Tab. 13 Cooling oil charge (option W3)
2.11 Motors and Power
2.11.1 Drive motor
ASD 25 ASD 30 ASD 40S ASD 40
Rated power [hp] 25 30 40 40
Enclosure protection TEFC TEFC TEFC TEFC
Tab. 14 Drive motor
Rated speed [rpm]
Maximum working pres‐
sure [psig]
ASD 25 ASD 30 ASD 40S ASD 40
125 3550 3545 3550 3550
175 1780 3545 3550 3550
217 1780 1780 3550 3550
Tab. 15 Drive motor rated speed
2.11.2 Fan motor
ASD 25 ASD 30 ASD 40S ASD 40
Rated power [hp] 0.75 0.75 0.75 0.75
Rated speed [rpm] 1080 1080 1080 1080
Enclosure protection TEFC TEFC TEFC TEFC
Tab. 16 Fan motor
2.12 Sound Pressure Level
Operational state
■ Nominal volume flow
■ Nominal pressure
Measurement conditions
■ Free-field measurement to CAGI/PNEUROP PN8 NTC 2.3
■ Measurement distance: 1 m
2Technical Data
2.11 Motors and Power
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ASD 25 ASD 30 ASD 40S ASD 40
Sound pressure lev‐
el [dB (A)]
66 67 67 69
Tab. 17 Sound Pressure Level
2.13 Power Supply
Basic requirements
The machine is designed for an electrical supply according to National Electric Code (NEC) NEC–
670, particulary NFPA 79, edition 2007, section 4.3. In the absence of any user-specified alternatives,
the limits given in these standards must be adhered to. Consult manufacturer for any other specific
power supply.
Three-phase
Do NOT operate package on any unsymmetrical power supply. Also do NOT operate package on
power supplies like, for example, a three-phase (open) delta or three-phase star with non-grounded
neutral.
The machine requires a symmetrical three-phase power supply transformer with a WYE configuration
output as shown in Figure 2 and Figure 3. In a symmetrical three phase supply the phase angles and
voltages are all the same.
Other power supplies are not suitable.
Fig. 2 Three-phase star (wye); 4 wire; grounded neutral
Fig. 3 Three-phase star (wye); 3 wire; grounded neutral
Further information Please contact authorized KAESER Service representative for options.
The electrical diagram 13.4 contains further specifications for electrical connection.
2.14 Power Supply specifications
The following multi-strand copper core wires are given according to 2005 NEC 310.15, Table 310.16
for 40 °C ambient temperature.
If other local conditions prevail, like for example high temperature, the cross section should be
checked and adjusted according to 2005 NEC 110.14©, 220.3,310.15, Table 310.16, 430.6, 430.22,
430.24 and other local codes.
Dual element time delay fuses are selected according to 2005 NEC 240.6,430.52 and tables 430.52,
430.248 and 430–.250.
2Technical Data
2.13 Power Supply
9_5721 06 USE
Service Manual Screw Compressor
ASD T Tri-Voltage 9

We strongly suggest using a separate copper conductor for the equipment GROUNDING. NEC Ta‐
ble 250.122 will point out the ”minimum size”, however, we recommend a ground conductor the same
size as the power leads, if local codes allow.
Rated power supply 208V ±10%, 3-ph, 60Hz
ASD 25 ASD 30 ASD 40S ASD 40
Pre-fuse [A] 110 125 150 175
Supply 4x AWG1/0 4x AWG1/0
(75 °C)
4x AWG2/0
(75 °C)
4x AWG2/0
(75 °C)
Consumption [A] 72 (125) / 79 90 / 94 (217) 106 / 108 (217) 123
Tab. 18 Supply 208V/3/60Hz
Rated power supply 230V ±10%, 3-ph, 60Hz
ASD 25 ASD 30 ASD 40S ASD 40
Pre-fuse [A] 110 125 125 150
Supply 4x AWG1/0 4x AWG1 (75 °C) 4x AWG1/0
(75 °C)
4x AWG2/0
(75 °C)
Consumption [A] 65 (125) / 74 85 / 86 (217) 95 / 97 (217) 111
Tab. 19 Supply 230V/3/60Hz
Rated power supply 460V ±10%, 3-ph, 60Hz
ASD 25 ASD 30 ASD 40S ASD 40
Pre-fuse [A] 50 60 70 80
Supply 4x AWG4 4x AWG4 4x AWG3 4x AWG3
Consumption [A] 33 (125) / 38 42 / 43 (217) 48 (217) / 49 55
Tab. 20 Supply 460V/3/60Hz
2.15 Option W1/W2/W3
Heat Recovery
2.15.1 Option W1
Prepared for external heat recovery
All connections are provided to accommodate an external heat exchanger.
The quality of the heat transfer medium and its required flow rate depend on the type of heat
exchanger used.
Maximum heat capacity
available
ASD 25 ASD 30 ASD 40S ASD 40
[kW] 16.4 19.3 23.9 27.6
[MJ/h] 59 69 86 99
2Technical Data
2.15 Heat Recovery
10
Service Manual Screw Compressor
ASD T Tri-Voltage 9_5721 06 USE