HAWE Hydraulik AC Series Operator's manual
Diaphragm accumulator type AC
Product documentation
D 7969
11-2020-1.8
Operating pre ure pmax:
Nominal volume V0 max:
350 bar
3.5 dm3
Diaphragm accumulator type AC
Product documentation
D 7969
11-2020-1.8
Operating pre ure pmax:
Nominal volume V0 max:
350 bar
3.5 dm3
© by HAWE Hydraulik SE.
The reproduction and di tribution of thi document a well a the u e and communication of it content to other without explicit
authori ation i prohibited.
Offender will be held liable for the payment of damage .
All right re erved in the event of patent or utility model application .
Brand name , product name and trademark are not pecifically indicated. In particular with regard to regi tered and protected name
and trademark , u age i ubject to legal provi ion .
HAWE Hydraulik re pect the e legal provi ion in all ca e .
Printing date / document generated on: 13.11.2020
2/29 D 7969 - 11-2020-1.8 © HAWE Hydraulik SE
Contents
1 Overview diaphragm accumulator type AC............................................................................................................ 4
2 Available versions, main data............................................................................................................................. 5
3 arameters......................................................................................................................................................... 8
3.1 General............................................................................................................................................................... 8
4 Dimensions...................................................................................................................................................... 10
4.1 Diaphragm accumulator....................................................................................................................................... 10
5 Assembly, operation and maintenance recommendations.....................................................................................19
5.1 General note .....................................................................................................................................................19
5.1.1 Safety in truction ............................................................................................................................................. 19
5.1.2 Legal provi ion ................................................................................................................................................. 19
5.1.3 Tran port and torage......................................................................................................................................... 20
5.2 Intended u e..................................................................................................................................................... 20
5.3 A embly information......................................................................................................................................... 21
5.3.1 In tallation and commi ioning............................................................................................................................21
5.4 Operating in truction .........................................................................................................................................24
5.5 Maintenance information..................................................................................................................................... 24
5.5.1 Replacing USIT ring (20).....................................................................................................................................24
5.5.2 Checking ga lling pre ure................................................................................................................................25
6 Other information.............................................................................................................................................26
6.1 Note regarding the lay-out.................................................................................................................................26
6.2 Acce orie , pare part and eparate component ..................................................................................................27
6.2.1 Te ting device DFM.............................................................................................................................................27
6.2.2 Mounting bracket .............................................................................................................................................. 27
6.2.3 Fitting ............................................................................................................................................................. 28
© HAWE Hydraulik SE D 7969 - 11-2020-1.8 3/29
1Overview diaphragm accumulator type AC
Diaphragm accumulator are a type of hydraulic accumulator. A diaphragm
eparate the compre ible ga cu hion from the hydraulic uid.
The diaphragm accumulator type AC i u ed a a ource of pre urized oil. It
upport or increa e the pump delivery ow or tore pre ure energy, e.g. for an
accumulator charge circuit.
With the aid of different tting the hydraulic accumulator type AC can be integrat-
ed into a hydraulic y tem. Different in tallation orientation and in tallation
po ition are po ible.
Features and benets:
■Compact de ign
■Option of integration into the HAWE modular y tem
■Operating pre ure up to 350 bar
Intended applications:
■Clamping y tem
■Jig
■Accumulator charging y tem
These accumulators are used to:
■tore pre ure energy
■upport the pump delivery
■improve y tem efficiency
■pul ation dampening in hydraulic y tem
■compen ation of pre ure variation due to temperature change
■compen ate internal leakage (when apparent)
Diaphragm accumulator type AC
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2Available versions, main data
Circuit symbol:
Order coding examples:
AC 2001
AC 1002
/90
/140
/3A
/22
Connecting thread (oil side) "Table 3"
Gas lling pressure "Table 2"
Basic type "Table 1"
Table 1 Basic type
Basic type Nominal volume
V0 (dm3)
Max. permissible
operating pressure
pmax (bar)
Max. permissible
pressure ratio
p2/p0
Max. permissible
dynamic pressure
difference
p2 - p1
CE mark and declara-
tion of conformity
AC 0725 0.075 250 8/1 150 --
AC 202 0.16 250 6/1 150 --
AC 322 0.32 210 8/1 120 --
AC 603 0.6 330 4/1 150 --
AC 1002 1.0 210 8/1 140 --
AC 1035 1.0 350 4/1 150 --
AC 1414 1.4 140 8/1 120 o
AC 2001 2.0 100 6/1 65 o
AC 2002 2.0 250 6/1 140 o
AC 2825 2.8 250 6/1 140 o
AC 3503 3.5 350 4/1 150 o
© HAWE Hydraulik SE D 7969 - 11-2020-1.8 5/29
Table 2 Gas pre-load pressure
Basic type Max. gas pre-load pressure
p0 (bar)
AC 0725 130
AC 202 130
AC 322 130
AC 603 130
AC 1002 130
AC 1414 130
AC 1035 140
AC 2001 110
AC 2002 130
AC 2825 130
AC 3503 130
For information on the ga pre-load pre ure p0 ee al o Chapter 6.1, "Note regarding the lay-out"
For information on acce orie , replacement part and individual part ee al o Chapter 6.2
6/29 D 7969 - 11-2020-1.8 © HAWE Hydraulik SE
Table 3 Connecting thread
Connecting threadBasic type
Coding Description
AC 0725 /1A - G 1/4 A *
AC 202 /3
/1A
/2A
/2AW
/3A
- G 1/2 (internal thread) *
- G 1/4 A
- G 3/8 A
- G 3/8 A
- G 1/2 A
AC 322 /3
/1A
/2A
/2AW
- G 1/2 (internal thread) *
- G 1/4 A
- G 3/8 A
- G 3/8 A
AC 603 /3
/1A
/2A
/2AW
/3A
- G 1/2 (internal thread) *
- G 1/4 A
- G 3/8 A
- G 3/8 A
- G 1/2 A
AC 1002 /22
/3
/2A
/2AW
/3A
- M22x1.5 (internal thread) *
- M33x1.5 (male thread) *
- G 1/2 (internal thread) *
- G 3/8 A
- G 3/8 A
- G 1/2 A (male thread)
AC 1414 /22
/2A
/2AW
/3A
- M22x1.5 (internal thread) *
- M33x1.5 (male thread) *
- G 3/8 A
- G 3/8 A
- G 1/2 A
AC 1035 /3
/1A
/2A
/2AW
/3A
- G 1/2 (internal thread) *
- G 1/4 A
- G 3/8 A
- G 3/8 A
- G 1/2 A
AC 2001 /3A - G 1/2 A *
AC 2002 /4
/3A
- G 3/4 (internal thread) *
- G 1/2 A
AC 2825 /3
/1A
/2A
/2AW
/3A
- G 1/2 (internal thread) *
- G 1/4 A
- G 3/8 A
- G 3/8 A
- G 1/2 A
AC 3503 /4
/3A
/4A
- G 3/4 (internal thread) *
- G 1/2 (male thread)
- G 3/4 (male thread)
* Ba ic ver ion
© HAWE Hydraulik SE D 7969 - 11-2020-1.8 7/29
3arameters
3.1 General
Design Hydraulic accumulator (diaphragm accumulator) according to the Pre ure Equipment
Directive 97/23/EC
All type welded de ign
Surface protection Enameled (2k paint)
Installed position Preferable vertical po ition (with the uid connection at the bottom), horizontal
Mounting Directly via pipe tting .
NOTE
En ure the pipe crew connection i correctly a embled. In the event of trong
vibration , ecure the accumulator to prevent it from coming loo e.
Gas lling Only N2 (nitrogen)!
Temperature }Oil: -10°C ... +80°C for type with NBR diaphragm
}Oil: -35°C ... +80°C for type with ECO diaphragm
Hydraulic uid Hydraulic oil: according to Part 1 to 3; ISO VG 10 to 68 according to DIN 51519
Vi co ity range: min. approx. 10, max. approx. 300 mm2/
Optimal operating range: approx. 10 to 35 mm2/
Al o uitable for biologically degradable pre ure uid type HEES ( ynthetic e ter) at
operating temperature up to approx. +70°C.
Diaphragm material NBR
ECO (compound) for type AC 0725, AC 202, AC 603, AC 1002 (except for AC 1002/22),
AC 1035, AC 2825, AC 3503
Lifetime 1.2 x 109 cycle
For all other operating condition the lifetime in accordance with PD 5500 Annex C mu t be
ob erved (Pre ure Equipment Directive)
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Weight
Type
AC 0725 = 0.75 kg
AC 202 = 1.0 kg
AC 322 = 1.3 kg
AC 603 = 3.0 kg
AC 1002 = 3.5 kg
AC 1035 = 7.5 kg
AC 1414 = 6.0 kg
AC 2001 = 4.0 kg
AC 2002 = 7.5 kg
AC 2825 = 8.6 kg
AC 3503 = 13.4 kg
© HAWE Hydraulik SE D 7969 - 11-2020-1.8 9/29
5Assembly, operation and maintenance recommendations
5.1 General notes
The hydraulic accumulator are ubject to the Pre ure Equipment Directive 2014/68/EU.
According to Article 3 of the Pre ure Equipment Directive 2014/68/EU the following hydraulic accumulator require a declaration of
conformity a well a a CE mark:
■Hydraulic accumulator with a volume > 1 litre and p· V > 50 bar · litre ( ection 1.1 a, uid in group 2)
■Hydraulic accumulator with p · V > 10,000 bar · litre ( ection 1.1 b, uid in group 2)
Operation i only allowed within the permi ible value . The accumulator mu t only be in talled, maintained and repaired by authori ed
and appropriately trained taff; the e ta k are governed by national regulation – in Germany, through the Betrieb icherheit verord-
nung (BetrSichV) Indu trial Safety Regulation, and in the EU through EU Directive 2009/104/EG.
The ga pre-lling mu t be checked regularly.
NOTE
The complete hydraulic y tem ha to be di charged prior to any kind of repair. A re pective plate (HAWE order No. 7788 022
(4708 4258-00)) ha to be applied at an ea ily vi ible pot on or near-by the accumulator.
No modification (welding, oldering, nor mechanical) mu t be carried out on the accumulator.
Only original pare part are allowed to be u ed.
5.1.1 Safety instructions
Further information on the technical de ign of accumulator y tem i provided by DIN EN ISO 4413. In a nut hell, there mu t be a
facility to relea e the accumulator pre ure on the uid ide when ervicing i carried out (drain valve and pre ure gauge for monitor-
ing purpo e ). The accumulator mu t have it own afety valve (valve with TÜV certied unit approval). Thi mu t limit any momentary
overpre ure to 10% of the highe t permi ible pre ure. In addition, a warning tating “Caution – pre ure to be relea ed from
accumulator before removal” mu t be afxed.
5.1.2 Legal provisions
Hydraulic accumulator are cla ied a pre ure ve el under the European Pre ure Equipment Directive 2014/68/EU. For hydraulic
accumulator , the regulation that apply at the in tallation location mu t be adhered to before commi ioning and during operation.
The operator hold ole re pon ibility for compliance with the exi ting regulation . The upplied document mu t be kept in a afe
place; they will be needed for recurring in pection .
© HAWE Hydraulik SE D 7969 - 11-2020-1.8 19/29
5.1.3 Transport and storage
CAUTION
■Comply with the relevant regulation on tran portation and afety.
■Wear protective equipment.
NOTE
Accumulator mu t be tored in a cool, dry place and protected from direct unlight.
Dirt mu t be prevented from entering the accumulator.
If the accumulator i tored over a longer period, it i advi able to reduce the ga pre-load pre ure to approx. 10 bar to prevent
deformation of the ealing element or eparator.
5.2 Intended use
Thi producti exclu ively intended for hydraulic application (uid engineering).
The u er mu t ob erve the afety mea ure and warning in thi documentation.
Essential requirements for the product to function correctly and safely:
– All information in thi documentation mu t be ob erved. Thi applie in particular to all afety mea ure and warning .
– The product mu t only be a embled and put into operation by qualied per onnel.
– The product mu t only be operated within the pecied technical parameter . The technical parameter are de cribed in detail in thi
documentation.
– All component mu t be uitable for the operating condition in the event of application in an a embly.
– The operating and maintenance manual of the component , a emblie and the pecic complete y tem mu t al o alway be
ob erved.
If the product can no longer be operated afely:
1. Remove the product from operation and mark it accordingly.
✓It i then not permitted to continue u ing or operating the product.
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