www.kaeser.

com

ASK Series
Rotary Screw Compressors
With the world-renowned SIGMA PROFILE
Free air delivery 0.79 to 4.65 m³/min, Pressure 5.5 to 15 bar
 www.kaeser.com

ASK series Powerful and

service-friendly

ASK series rotary screw compressors meet all of these needs and more. Not only do they deliver more
compressed air for less power consumption, but they also combine ease of use and maintenance with
exceptional versatility and environmentally responsible design.

More air for your money increased performance of these versatile comp-
ressors. KAESER’s unique cooling system has
ASK rotary screw compressors are true class leaders
when it comes to impressive performance. This has further.
been achieved through continued airend develop-
ment, further optimisation of the SIGMA PROFILE
rotors and low speed operation. Compared with Optimised design
previous models, these enhancements have enabled
All ASK models share logical and user-friendly
free air delivery to be increased by as much as 16 %.
design throughout. For example, the enclosure doors
can be removed in a few simple steps and allow
Low energy consumption excellent visibility of the system’s intelligently laid out
components. Needless to say, the ASK series was
designed to enable best possible access to all
costs incurred throughout the equipment’s entire service points. When closed, the sound-absorbing
service life. With compressors, energy costs account compressor enclosure keeps operational sound
for the lion’s share of total expenditure. KAESER levels to a minimum thereby ensuring a pleasantly
therefore designed its ASK series compressors with quiet work environment. Moreover, with its two intake

the airend with its energy-saving SIGMA PROFILE

drive motor. Last, but not least, ASK series comp-
motors and the SIGMA CONTROL 2 compressor ressors are impressively compact, which makes them
the perfect choice for applications where space is at
a premium.

Potential energy cost savings

through heat recovery

Compressed air system investment Image: ASK 28

Maintenance costs

Energy costs
Energy cost savings
through system optimisation Potential energy cost savings

2 3
 www.kaeser.com

ASK series
Quality is in the details

SIGMA PROFILE airend SIGMA CONTROL 2

At the heart of every ASK system lies a premium quality
airend featuring KAESER’s SIGMA PROFILE rotors. and system monitoring. The large display and RFID
Operating at low speed, KAESER’s airends are equip- reader provide effective communication and maxi-
mum security. Multiple interfaces offer exceptional

quick and a easy.

Energy-saving radial fan

The use of IE3 motors will become mandatory in the Driven by an independent motor, the radial fan
ensures low compressed air discharge temperatures
and provides greater cooling performance with lower
iency motors have to offer by choosing KAESER ASK energy requirement. Needless to say, it also conf-
series rotary screw compressors.
327/2011.

4 5
 www.kaeser.com

ASK T series
integrated dryer

Switching KAESER refrigeration dryer energy saving control

performance Conventional refrigeration dryers with continuous control
KAESER energy saving

10 12 18 20 Time (min)

Energy-saving control
The integrated refrigeration dryer in ASK T units prov-
resistant aluminium heat exchanger, the integrated
saving control. The dryer is therefore active only when refrigeration dryer for ASK packages was designed
compressed actually needs to be dried. This approach
consequently achieves the required compressed air

Image: ASK 28 T Refrigeration dryer with ECO DRAIN Exceptional compressed air quality
The refrigeration dryer is equipped with an automatic Because the compressor and dryer are thermally
ECO DRAIN condensate drain. This advanced level- shielded from one another, the dryer remains unaff-
controlled drain eliminates the compressed air losses ected by heat from the compressor, which means
associated with solenoid valve control, thereby saving that it can operate at peak performance at all times to
energy and considerably enhancing the reliability of provide quality, dry compressed air.
the compressed air supply.

6 7
 www.kaeser.com

ASK SFC series

Modular design –
Dependable performance

(kW/m³/min) Conventional speed control

Efficient SFC variable speed control

FAD (m³/min)

Precision pressure control

In any compressed air installation, it is the variable
speed controlled compressor that operates longer than control range according to pressure to suit actual
any other unit within the system. ASK SFC models compressed air demand. As a result, operating pres-
sure is precisely maintained to within ±0.1 bar. This
without running at extreme speeds. This saves energy, allows maximum pressure to be reduced which saves
maximises service life and enhances reliability. both energy and money.

Integrated SFC control cabinet

Image: ASK 40 T SFC Housed in its own integrated – and insulated – control Like all KAESER products, ASK series SFC pack-
cabinet, the SFC frequency converter is shielded from
heat from the compressor. A separate fan keeps op- EMC (Electromagnetic Compatibility) directive and
erating temperatures in the optimum range to ensure applicable German legislation, as shown by the VDE
maximum performance and service life. (Association for Electrical, Electronic & Information
Technologies) EMC symbol seal of quality.

8 9
 www.kaeser.com

10 11
 www.kaeser.com

Equipment Design
Complete unit Electric motor Refrigeration dryer
Ready-to-run, fully automatic, super- CFC-free, R 134a refrigerant, fully insul-
silenced, vibration damped, all panels quality German manufacture, IP 55, ISO F ated, hermetically sealed refrigerant circuit, Standard version
powder coated. Suitable for use in ambient for additional reserve. rotary refrigerant compressor with energy-
temperatures up to + 45°C. saving shutdown function, hot-gas bypass
control, electronic condensate drain.
Electrical components
Sound insulation Inlet valve
IP 54 control cabinet, control transformer,
Panels lined with laminated mineral wool. Heat recovery (HR) Airend
contacts for ventilation control. Optionally available with integrated HR
system (plate-type heat exchanger). Drive motor
Vibration dampening
Double insulated anti-vibration mountings Fluid separator tank
using rubber bonded metal elements. SIGMA CONTROL 2
Compressed air aftercooler
-
three-stage separator system, pressure tional status at a glance, plain text display, Fluid cooler
Airend
relief valve, minimum pressure check 30 selectable languages, soft-touch keys
Genuine KAESER rotary screw, single with icons, fully automated monitoring
stage airend with energy-saving SIGMA and control. Selection of Dual, Quadro, Radial fan
couplings. Vario and continuous control as standard.
for optimised rotor cooling. Interfaces: Ethernet; additional optional

Cooling
Drive
Air-cooled; separate aluminium cooler for slot for data-logging and updates; RFID
V-belt drive with automatic belt tensioning.
reader, web server.

Also optionally available with the SIGMA CONTROL BASIC

controller.

Rotary screw airend with energy-saving SIGMA PROFILE rotors SIGMA CONTROL 2 controller

12 13
 www.kaeser.com

Standard version T - Version with integrated refrigeration dryer (R 134a refrigerant)

Modell
Model Operating
Betriebs- Liefermenge
FAD*) *) max.
Max. Rated
Motornenn-
motor Abmessungen
Dimensions Compressed
Anschluss air Schalldruck-
Sound Weight
Masse Modell
Model Operating
Betriebs- Liefermenge
FAD*) *) max.
Max. Rated
Motornenn-
motor Kältetrockner-
Refrigeration Abmessungen
Dimensions Compressed
Anschluss Schalldruck-
Sound Weight
Masse
überdruck
pressure Gesamtanlage
Complete unit bei
at working
Überdruck
pressure leistung
power W
B xx TD xxHH connection
Druckluft pressure
pegel **)
level überdruck
pressure Gesamtanlage
Complete unit bei
at Überdruck
working leistung
power leistungs-
dryer WB x TD xx HH air Druckluft
connection pressure
pegel **)
level
operating
Betriebsüberdruck
pressure **) operating
Betriebsüberdruck
pressure pressure power
aufnahme
consumption **)

 bar m³/min bar kW mm  dB(A) kg  bar m³/min bar kW kW mm  dB(A) kg

 7.5  2.86  8  7.5  2.86  8

ASK 28  10  2.40  11  15  800 x 1100 x 1530  G1¼  65  485 ASK 28 T  10  2.40  11  15  0.7  800 x 1460 x 1530 
G1¼  65  580
 13  1.93  15  13  1.93  15
 7.5  3.51  8  7.5  3.51  8
ASK 34  10  3.00  11  18.5  800 x 1100 x 1530  G1¼  67  505 ASK 34 T  10  3.00  11  18,5  0.7  800 x 1460 x 1530 
G1¼  67  600
 13  2.50  15  13  2.50  15
 7.5  4.06  8  7.5  4.06  8
ASK 40  10  3.52  11  22  800 x 1100 x 1530  G1¼  69  525 ASK 40 T  10  3.52  11  22  0.7  800 x 1460 x 1530 
G1¼  69  620
 13  2.94  15  13  2.94  15

1530 1530

800 1460 800

1100

Front view Left view Right view Rear view Front view Left view Right view Rear view

SFC - Version with variable speed drive T SFC - Version with variable speed drive and integrated refrigeration dryer

Modell
Model Operating
Betriebs- Liefermenge
FAD*) *) Max.
max. Rated
Motornenn-
motor Abmessungen
Dimensions Compressed
Anschluss air Schalldruck-
Sound Weight
Masse Modell
Model Operating
Betriebs- Liefermenge
FAD*) *) max.
Max. Rated
Motornenn-
motor Kältetrockner-
Refrigeration Abmessungen
Dimensions Compressed
Anschluss Schalldruck-
Sound Weight
Masse
überdruck
pressure Gesamtanlage
Complete unit bei
at working
Überdruck
pressure leistung
power W
B xx TD xxHH connection
Druckluft pressure
pegel **)
level überdruck
pressure Gesamtanlage
Complete unit bei
at Überdruck
working leistung
power leistungs-
dryer WB x TD xx HH air Druckluft pegel **)
connection pressure level
operating
Betriebsüberdruck
pressure **) operating
Betriebsüberdruck
pressure pressure power
aufnahme
consumption **)

 bar m³/min bar kW mm  dB(A) kg  bar m³/min bar kW kW mm  dB(A) kg

 7.5  0.94 - 3.60  8 7.5 0.94 - 3.60 8

ASK 34 SFC  10  0.80 - 3.14  11  18.5  800 x 1100 x 1530

G1¼  68  530 ASK 34 T SFC 10 0.80 - 3.14 11 18.5 0.7 800 x 1460 x 1530 G1¼ 68 625
 13  0.88 - 2.70  15 13 0.88 - 2.70 15
 7.5  0.94 - 4.19  8 7.5 0.94 - 4.19 8
ASK 40 SFC  10  0.80 - 3.71  11  22  800 x 1100 x 1530

G1¼  70  550 ASK 40 T SFC 10 0.80 - 3.71 11 22 0.7 800 x 1460 x 1530 G1¼ 70 645
 13  0.88 - 3.17  15 13 0.88 - 3.17 15

1530 1530

800 800
1100 1460

Front view Left view Right view Rear view Front view Left view Right view Rear view

*)FAD in accordance with ISO 1217 : 2009, Annex C: Absolute intake pressure 1 bar (a), cooling and air intake temperature 20 °C
**)Sound pressure level as per ISO 2151 and the basic standard ISO 9614-2, tolerance: ± 3 dB (A)

14 15
www.kaeser.com

Choose the required grade of treatment according to your field of application: Explanation
Air treatment using a refrigeration dryer (pressure dew point +3°C) ACT Activated carbon adsorber
Application examples: Selection of treatment classes to ISO 8573-1 (2010) AQUAMAT AQUAMAT
Installation for heavily
DD Desiccant dryer
Solids Water Oil
fluctuating air demand
DHS Air-main charging system
DHS FF
Pure air and clean room AR Air receiver
technology, dairies, breweries 1 4 1
ED ECO DRAIN
DHS FE FD ACT FF FB / FC
Foodstuff production FD
2 4 1 Optional
AR filtration RD* ZK FE / FF
DHS FFG
Very clean conveying air,
chemical plants 3 4 1 FG
RD Refrigeration dryer
DHS FF FFG THNF
Pharmaceutical industry
1 4 1 AR ZK Centrifugal separator

DHS Compressed air quality classes to ISO 8573-1(2010):

Weaving machines, photo
labs 2 4 1 RD* ED Compressor THNF
Solid particles / dust
DHS FF
Paint spraying, powder max. particle count per m³ of a
coating 1 4 2 Class particle size with d [µm]*

DHS FE
Packaging, control and
instrument air 2 4 2 0 e.g. Consult KAESER regarding
pure air and cleanroom technology
DHS 1
General works air, high-grade
sand blasting 4 4 3 2
AQUAMAT 3
FC 4
Shot blasting
4 7 3 5

Class Particle concentration Cp in mg/m³ *

FB
Low-grade shot blasting
5 7-X 4 6 0 < Cp
7 5 < Cp
For KAESER rotary screw compressors X Cp > 10
Conveying air for waste
water systems 6 7-X 4 * FE microfilters can
be optionally installed Water
Other machines in TG to TI series
No quality requirements
X X X refrigeration dryers. Class Pressure dew point, in °C

0 e.g. Consult KAESER regarding

pure air and cleanroom technology
For non frost protected air systems: Compressed air treatment with a desiccant dryer 1
Installation for heavily
(down to -70 °C pressure dew point) fluctuating air demand 2
3
Solids Water Oil 4
DHS FF 5
Pure air and clean room
technology, pharmaceuticals, 1 1-3 1 6
dairies, breweries
Optional Class Concentration of liquid water CW in g/m³ *
DHS FE FD ACT AR filtration DD** FE ZK
Microchip production,
optics and foodstuffs 2 1-3 1 7 CW
8 0.5 < CW
DHS 9 5 < CW
Paint spraying X CW > 10
3 1-3 1 AR
Oil
DHS FF
Process air, pharmaceuticals Total oil concentration
1 1-3 1 DD** FE ED Compressor THNF Class

0 e.g. Consult KAESER regarding

DHS FG FD pure air and cleanroom technology
Photo labs
2 1-3 1 1
AQUAMAT
2
DHS 3
Especially dry conveying ** An aftercooler is required where applicable
4
air, paint spraying, fine 3 1-3 2 for heat regenerated desiccant dryers.
pressure controllers X > 5.0
*) At reference conditions 20°C, 1 bar(a), 0% humidity

KAESER KOMPRESSOREN SE
P.O. Box 2143 – 96410 Coburg – GERMANY – Tel +49 9561 640-0 – Fax +49 9561 640130
e-mail: productinfo@kaeser.com – www.kaeser.com