ACP 15 / 28 / 40
Dry compact Multi-stage Roots pumps.
Clean vacuum. High reliability.

ACP 15 / 28 / 40

Dry compact Multi-stage Roots pumps.
Clean vacuum. High reliability.

The multi-stage Roots pump technology of the ACP series
meets the requirements of applications where clean and dry
vacuum is needed.
No particle contamination

The frictionless pumping module is optimized to operate
without internal lubricant and provides outstanding oil-freevacuum with no hydrocarbon vapor back­streaming. Without
any seals between rotor and stator no particles are generated.

High reliabilityThe absence of wearing parts inside the pumping module
allows for unsurpassed long-term stability and high reliability
in even the most demanding applications.

Constant performances

The frequency converter driven motor provides constantrotational speed, thus stable pumping speed andconsistent ultimate pressure are achieved all over the world.

Low maintenance costs

Our ACP pumps require overhaul only every 22,000 hours ofoperation for the ACP 28/40 and 20,000 hours of operation for
the ACP 15 resulting in low cost of ownership.

Condensable vapor ability

High flow gas ballast ports and drainable silencers allow
the ACP to pump high amounts of condensable vapors(up to 1,000 g/h of pure water vapor).

Pfeiffer Vacuum has been
an industry leader inmulti-stage Roots pumping
technology since 1988

2

Advantages at a glance

Best solution
Air cooling
Frequency converter

Several gas port options
Universal power supply
Standards– Ideal replacement for oil-sealed pumps– No installation and operational costs for water supply– Hour meter, remote operation mode (RS-485, dry contacts,
multiple rotational speed selection (power saving,noise reduction, adaptation to application cycle)– Purge gas, gas ballast, other specific ports according toapplication– Wide voltage supply 50/60 Hz single-phase and three-phase– Compliance with CE standards, UL/CSA certified,
SEMI S2 certified

3

ACP 15 / 28 / 40

Dry compact Multi-stage Roots pumps.
Clean vacuum. High reliability.

Typical applications ofACP pumps

Analytical instruments
Electron microscopes
Surface analyzers
Leak detectors
Mass spectometers
Optical spectrometers
R&D
Particle accelerators
Turbo pumping stations
Laboratories
Industry
Lamp manufacturing
Vacuum coating
Cryo pumps regenerationPlasma cleaning
DryingLoad-lockSpecific applications needspecial solutions

R & D applications(HiCube pumping station with ACP 40)

Special versions have been developed for:Helium recirculation in a closed-loop
Backing turbopumps in UHV systems
Please contact us for special versions.

Analytical instruments

4

Industrial applications

Semiconductor tool

Plasma cleaning machine

Several versions for a wide range of applications
Standard version(ACP 15 / ACP 28 / ACP 40)

The SD version is designed for applications that require pumping of clean (dust-free) and non-corrosive gases. Standard
pumps are equipped with a gas ballast device to improvepumping of light gases and avoid vapor condensation inside
the pump. Three gas ballast options are available to satisfy
customer needs.
1 Permanently open inlet filter
2 Manual gas ballast knob (open/close)
3 Blanked-off (closed by plug)

Version for corrosive gases(ACP 15 G / ACP 28 G /ACP 40 G)

1

2

3

The G version pump is compatible with traces ofcorrosive gases. Three purge gas jets protect low and highpressure bearings and dilute trace amounts of corrosivegases.

Purge port R 1/4“Version forcondensable vapors(ACP 28 CV / ACP 40 CV)

Version forgas re-circulation
or recovery(ACP 28 CP / ACP 40 CP)

The CV version is specially designed to avoid vapor
condensation inside the pumping module with:
A high gas ballast flow to warm up
the pump and dilute condensable gases
An external drainable silencer to remove liquidfrom the lowest point of the exhaust stage.
A gas purge to protect lip seals and ball bearings
from condensable vapors.
CV versions extend the pure water vapor capacity
up to 1,000 g/h.

Drainable silencer

To match with the features asked for gas recirculation(He3/He4 refrigerators, lasers…), the ACP CP version has
been developed. The pumps were defined to match withan unequaled vacuum leak tightness (better than
5 · 10-8 mbar · l/s). The ACP CP version is also equipped withan additional vacuum port to make initial evacuation of thepump easy and fast. These pumps are also very popular forgas recovery applications, for example noble gas recovery.

In collaboration with large R&D centers, Pfeiffer Vacuum has defined various
pumping solutions based on our proven ACP technology for particle acceleratorsand other R&D applications:
Fluorine free version(ACP 28 SH / ACP 40 SH)

The SH version is designed for applications that require
pumping of clean (dust-free) and non corrosive gases where
presence of Fluorine is not permitted. SH pumps are equippedwith a gas ballast device to improve pumping of light gases
and avoid condensation vapors inside the pump.

Version for radiating
environments(ACP 28 R / ACP 40 R)

The ACP R version is based on the SH version, therefore
Fluorine free, and equipped with remote electronics. Thiscan be an important factor when a pump is installed close
to an environment emitting radiation, for example in particle
accelerators.

Additional port

Gas ballast port

Remote electronics

5ACP 15 / 28 / 40

Dry compact Multi-stage Roots pumps.
Clean vacuum. High reliability.

Technical data
Description
Unit
ACP 15
ACP 28Pumping speed, max.
m3/h1427		
cfm
8.2
16
Ultimate pressure without purge gas1)
mbar
5 · 10-2
4 · 10-2-2		
torr
3.8 · 103.0 · 10-22)
1)
Ultimate pressure with purge gas
mbar
0.30.2For G version only3)
torr
0.230.15
Ultimate pressure with open gas ballast1)
mbar
0.30.2For SD version only
torr
0.230.15
Maximum continuous inlet pressure
mbar
1,013
1,013		
torr
750
750
Max. pure water vapor tolerance (measured)
g/h80
120
with open gas ballast (SD version)
Power supply
1-phase 		
100-230 V +/-10 %, 50/60 Hz
3-phase 		200-440 V +/-10 %, 50/60 Hz
Power consumption1)
at ultimate pressure
W
450
700
at atmosphere
W
550
1,050
Ambient temperature°C 		
12 to 40		°F
54 to 104
Flange inISO-KF
DN 25
DN 25
Flange out
ISO-KFDN 16
DN 25
Max. Helium leak rate4)
mbar l/s< 5 · 10-7
< 5 · 10-7
Weightkg
2330		lbs
5166
Overall dimensions (L x W x H)
1-phase motormm
514 x 190 x 270
647 x 193 x 322		
inches20.2 x 7.5 x 10.6
25.4 x 7.6 x 12.6
3-phase motormm
497 x 190 x 266
612 x 187 x 314		
inches19.5 x 7.5 x 10.4
24.1 x 7.36 x 12.3
Maximum values obtained after minimum 1 hour of pump warm up time
5,000 sccm for ACP 15; 3,700 sccm for ACP 28/40
relative nitrogen pressure 300 mbar
4)
Except CP version (5 ·10-8 mbar ·l/s)
1)
2)
3)

6ACP 4037224 · 10-2
3.0 · 10-2
0.2
0.15
0.2
0.15
1,013
750
120

700
1,050

DN 40
DN 25
< 5 · 10-732
70.5
647 x 193 x 322
25.4 x 7.6 x 12.6
612 x 187 x 314
24.1 x 7.36 x 12.3

40

Pumping speed

35

Pumpingm33//h)Pumping speed
speed ((mh)

30

25

20

15

10–– ACP 15–– ACP 28–– ACP 40

5010 -2

10 -1

10 1

110 2

10 3

Inlet pressurepressure (mbar)(mbar)

103Pressure drop
(volume = 1 m3)

Inlet(mbar)
Inlepressuret pressure( mbar)

102

101

110-1

10-2

01020304050607080

90–– ACP 15–– ACP 28–– ACP 40

Time (min)
(min)

7

ACP 15 / 28 / 40

Dry compact Multi-stage Roots pumps.
Clean vacuum. High reliability.

Dimensions
410
285240

ACP 151-phase motor1)

Inlet DN 25 ISO-KF

475
499

93
190

40

10185

300

150

203

270

86

Exhaust DN 16 ISO-KF

514

627

66
96

Exhaust DN 25 ISO-KF
278

224 (8.8)

64 (2.5)190 (7.5)

ACP 28 CV / 40 CV2)207 (8.2)
485 (19)1)3-phase versions are shorter and smaller. See technical specification table.
2)CV versions are wider due to the side mounted external silencer.

8Dimensions in mm

193

93

2067 60309
Inlet DN 25 ISO-KF for ACP 28
Inlet DN 40 ISO-KF for ACP 40

64 (2.5)190 (7.5)

11.5

322
20228
250 (inlet and exhaust)
272

Gas line supply
R1/4” connector(ACP G)ACP 28/40
1-phase motor1)

Order numbers
ACP 15 pumps­TypeVersions

Inlet port

Exhaust port

Gas ballast

Frequency converter Power cordOptions

V5: ACP 15SA:SD version
GA:G version

T: DN 25

S: DN 16

M: Manual (On/Off)
B2): Blanked
R: R 1/4“ port(GA version)
F: Permanent filter(mesh)

G: 1-phase
T: 3-phase

K: UK
A: US
S: Switzerland
J: Japan(1 cable LV only)
E: Europe
Z: Without
R1): 3-phase(without plug)

F: Rubber feet

V5SAT

E

FSM

F

Example: V5SATSMFEF

ACP 28/40 pumps­TypeVersions

Inlet/Exhaust Motor

V6: ACP 28
V8: ACP 40

SA: SD version
GA: G version
GV: Condensable vapor
SC: CP version
SH: Fluorine(F ) freeversion
SR: Fluorine(F ) freeversionwithremoteelectronics

T: ACP 28
C: ACP 40
P5): ACP 28
F2 freeR5): ACP 40
F2 freeFrequency converter Power cord

S: Standard G: 1-phaseE4): Leaktight T: 3-phaseD6): Remote 1-p2

2V6SA

ACP 28 =DN 25/DN 25
ACP 40 =DN 40/DN 25

TSF

Gast ballast

Options

K: UK
A: US
S: Switzerland
J: Japan(1 cable LV only)
E: Europe
Z: Without
R1): 3-phase(without plug)

M: Manual (On/Off)
B4): Blanked
F: Permanent filter(mesh)
V3): Manual (On/Off)(CV version)
H3): Permanent filter(CV version)

F: Rubber feet
R: WheelsEM

FExample: V6SATSFEMF
R is the only option for 3-phased version
R is the only option for G version
3)
V or H are the only options for CV versions
4)
E is the only option for CP version
5)
P and R are the only options for SH or SR version
6)
D is the only option for SR version
1)
2)

9ACP 15 / 28 / 40

Dry compact Multi-stage Roots pumps.
Clean vacuum. High reliability.

Accessories

For ACP 40, the suitable filter is IPF 40:
Inlet/exhaust ports: DN 40 ISO-KFSightglass

200

For ACP 15 and ACP 28, the suitable filter is IPF 25:
Inlet/exhaust ports: DN 25 ISO-KF

57

Inlet particle filters will prevent solid particles from entering theACP pumps.

Drain(G 1/8)

Filtration threshold: 25 µm
Order number
111649111647111650111648IPF 25

338

Inlet particle filter
IPF 25
IPF 40Replacement cartridge for IPF 25
Replacement cartridge for IPF 40

Ø 86
95 x 95

9External silencer

Use of the external exhaust silencer ES 25S will significantly
reduce the noise level when operating ACP pumps at highpressures:
Inlet/exhaust ports: DN 25 ISO-KF

11 32

Inlet particle filter

86 x 86

DN 25

Inlet pump DN 25

DN 40

Ø 140

DN 40

Inlet pump

IPF 4050
DN 25

ES 25S can be used at the exhaust of ACP 15, ACP 28
and ACP 40.

External silencer
ES 25S
Replacement cartridge for ES 25S

148

Delivered with all necessary fittings for connection at theexhaust port for all ACP pumps.
Order number
10987310979762 x 62

ES 25SCable

For ACP R version to place the remote electronics safely awayfrom radiation
Cable
Remote cable for ACP R version

Order numberA334919-XXXX1)

1)XXXX represents the cable length in decimeter

10Dimensions in mm

DN 25
ExhaustpumpNoise reduction covers

NRC 15 and NRC 28/40 reduce ACP noise levels significantly.
Noise level reduction from 5 to 6 dBA:
NRC 15 for ACP 15
NRC 28/40 for ACP 28 and ACP 40
Max. ambient temperature: 35 °C
An additional pipe extension is required for each port
to connect accessories when NRC is mounted.1)
1)

Pipe extension, centering rings and clamping rings have to be orderedseparately.

Noise reduction covers
NRC 15
NRC 28/40Pipe extension DN 25 ISO-KF
Pipe extension DN 40 ISO-KF

Order number
111968112637
A462855
303024

305

350

633

770

250

NRC 15

Sound enclosure kit

NRC 28/40

250

Sound enclosure kits are the appropriate solution for
operating ACP pumps in even the most quiet environments.
Noise reduction of 10 dBA.
Max. ambient temperature: 30 °C
SEK 15 includes dedicated DN 25 exhaust silencer

758+15469 (ACP 28)
474 (ACP 40)

469 (ACP 28)
474 (ACP 40)435402402427

435

Order number
122480114379427

Sound enclosure kit
SEK 15SEK 28/40

790

758+15790
238

SEK 15238

238

SEK 28/40

238
Dimensions in mm
11VACUUM SOLUTIONS FROM A SINGLE SOURCE

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technological perfection, competent advice and reliable service.

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We are the only supplier of vacuum technology that provides a complete product portfolio.

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Are you looking for aperfect vacuum solution?
Please contact us:

www.pfeiffer-vacuum.com

Pfeiffer Vacuum GmbHGermany
T +49 6441 802-0

All information is subject to change without prior notice. PM 0001 PEN (Juni 2021/PoD)

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