HAWE Hydraulik D 7969 AC Manual del operador

Product documentation

04-2014-1.1

D 7969 AC

HAWE Hydraulik SE - Streitfeldstr. 25 • 81673 München

Max. operating pressure pmax: 350 bar

Max. nom. volume VO max: 2.8 dm

Diaphragm accumulator type AC

Symbol:

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©by HAWE Hydraulik SE.

Forwarding and copying as well as use and communication of the contents of this document are prohibited unless explicitly permitted.

Violations oblige to compensation for damages.

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Contents

1 Overview diaphragm accumulator type AC.......................................................................................................... 4

2 Versions available, main data............................................................................................................................5

2.1 Available versions.............................................................................................................................................. 5

3 Parameters....................................................................................................................................................... 7

3.1 General............................................................................................................................................................. 7

4 Dimensions...................................................................................................................................................... 8

4.1 Diaphragm accumulator.......................................................................................................................................8

5 Installation, operation and maintenance information........................................................................................15

5.1 General notes...................................................................................................................................................15

5.1.1 Safety instructions............................................................................................................................................15

5.1.2 Legal provisions............................................................................................................................................... 15

5.1.3 Transport and storage....................................................................................................................................... 15

5.1.4 Operation and maintenance............................................................................................................................... 15

5.2 Designated use................................................................................................................................................ 16

5.3 Assembly information........................................................................................................................................17

5.3.1 Installation and commissioning..........................................................................................................................17

5.4 Operating instructions.......................................................................................................................................19

5.5 Maintenance information................................................................................................................................... 20

5.5.1 Replacing USIT ring (20)...................................................................................................................................20

5.5.2 Checking gas filling pressure..............................................................................................................................20

6 Other information...........................................................................................................................................21

6.1 Notes regarding the lay-out...............................................................................................................................21

6.2 Accessories, spare parts and separate components................................................................................................ 22

6.2.1 Testing device DFM...........................................................................................................................................22

6.2.2 Mounting brackets............................................................................................................................................ 22

6.2.3 Fittings........................................................................................................................................................... 23

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1Overview diaphragm accumulator type AC

The diaphragm accumulators with a capacity of up to 3.5 dm3are primarily used

as a source of pressure oil for supporting/increasing the pump delivery flow and

storing pressure energy, in order toachieve an accumulator charging circuit, for

example.

Various fittings enable the integration of a hydraulic system in different installation

positions and at different installation points.

All hydraulic accumulators listed here are subject to the Pressure Equipment

Directive 97/23/EC.

Features and benefits:

■Compact design

■Option of integration into the HAWE modular system

■Operating pressures up to 350 bar

Intended applications:

■Clamping systems

■Jigs

■Accumulator charging systems

These accumulators are used to:

■store pressure energy

■support the pump delivery

■improve system efficiency

■pulsation dampening in hydraulic systems

■compensation of pressure variations due to temperature changes

■compensate internal leakage (when apparent)

Figure 1: Diaphragm accumulator type AC

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2Versions available, main data

2.1 Available versions

Symbol:

Examples:

AC 2001

AC 1002 /90

/140 /3A

/22

Connection thread (hydraulic side) Table 3 Connection thread

Gas filling pressure Table 2 Gas pre-load pressure p0(bar)

Basic version Table 1 Basic version

Table 1 Basic version

Basic type Nom. volume

V0(dm3)Max. perm. operating

pressure

pmax (bar)

Max. perm. pressure

ratio

p2/p0

Max. perm. pressure

dyn. difference

p2- p1

CE - stamping plus letter

of conformity

AC 0725 0.075 250 8/1 180 --

AC 202 0.16 250 6/1 210 --

AC 322 0.32 210 8/1 210 --

AC 603 0.6 330 4/1 150 --

AC 1002 1.0 210 8/1 140 --

AC 1414 1.4 140 8/1 140 o

AC 1035 1.0 350 4/1 150 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

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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 603 200

AC 1002 130

AC 1414 130

AC 1035 140

AC 2001 90

AC 2002 130

AC 2825 130

For information on the gas pre-load pressure p0see

also Chapter 6.1, "Notes regarding the lay-out"

For information on accessories, spare parts and

individual parts see also Chapter 6.2, "Accessories,

spare parts and separate components"

Table 3 Connection thread

Connection threadBasic type

Coding Description

AC 0725 /1A - G 1/4A (BSPP) *

AC 202 /3

/1A

/2A

/2AW

/3A

- G 1/2 (int. thread) (BSPP) *

- G 1/4A (BSPP)

- G 3/8A (BSPP)

- G 1/2A (BSPP)

AC 322 /3

/1A

/2A

/2AW

- G 1/2 (int. thread) (BSPP) *

- G 1/4A (BSPP)

- G 3/8A (BSPP)

AC 603 /3

/1A

/2A

/2AW

/3A

- G 1/2 (int. thread) (BSPP) *

- G 1/4A (BSPP)

- G 3/8A (BSPP)

- G 1/2A (BSPP)

AC 1002 /22

/2A

/2AW

/3A

- M22x1.5 (int. thread) *

- M33x1.5 (ext. thread) *

- G 3/8A (BSPP)

- G 1/2A (ext. thread) (BSPP) *

AC 1414 /22

/2A

/2AW

/3A

- M22x1.5 (int. thread) *

- M33x1.5 (ext. thread) *

- G 3/8A (BSPP)

- G 1/2A (BSPP)

AC 1035 /3

/1A

/2A

/2AW

/3A

- G 1/2 (int. thread) (BSPP) *

- M33x1.5 (ext. thread) *

- G 1/4A (BSPP)

- G 3/8A (BSPP)

- G 1/2A (BSPP)

AC 2001 /3A - G1/2A (BSPP) *

AC 2002 /4

/3A

- G 3/4 (int. thread) (BSPP) *

- G 1/2A (BSPP)

AC 2825 /3

/1A

/2A

/2AW

/3A

- G 1/2 (int. thread) (BSPP) *

- G 1/4A (BSPP)

- G 3/8A (BSPP)

- G 1/2A (BSPP)

* Basic version

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3Parameters

3.1 General

Design Diaphragm type accumulator conforming Pressure Equipment Directive PED 97/23/EC

All types welded design

Surface protection Enameled (2k paint)

Installed position Preferable vertical position (with the fluid connection at the bottom), horizontal

Mounting Directly via pipe fittings.

Note

Ensure the pipe screw connections are correctly fitted. In the event of strong

vibrations, secure the accumulator to prevent it from coming loose.

Gas filling Only N2(nitrogen)!

Temperature }fluid: -10°C ... +80°C

}fluid: -40°C ... +80°C in type AC 322, AC 603, AC 1414, AC 2802

Hydraulic fluid Hydraulic oil: conforming to DIN 51 524 Part 1 to 3; ISO VG 10 to 68 conforming DIN 51 519

Viscosity range: min. approx. 10, max. approx. 300 mm2/s

Optimal operating range: approx. 10 to 35 mm2/s

Also suitable for biologically degradable pressure fluids type HEES (synthetic ester) at

operating temperatures up to approx. +70°C.

Diaphragm material NBR

ECO (compound) in type AC 0725, AC 202, AC 2825

Service life 1.2 x 109cycles

For all other operating conditions the service life in accordance with PD 5500 Annex C must

be observed (Pressure Equipment Directive)

Mass

Type AC 0725 = 0.75 kg

Type AC 202 = 1.0 kg

Type AC 322 = 1.3 kg

Type AC 603 = 3.0 kg

Type AC 1002 = 3.5 kg

Type AC 1414 = 6.0 kg

Type AC 1035 = 7.5 kg

Type AC 2001 = 4.0 kg

Type AC 2002 = 7.5 kg

Type AC 2825 = 8.6 kg

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4Dimensions

All dimensions in mm, subject to change!

4.1 Diaphragm accumulator

Type AC 0725 /1A Type AC 202 /1A Type AC 202 /2A

Type AC 202 /2AW Type AC 202 /3 Type AC 202 /3A

See also Chapter 6.2, "Accessories, spare parts and separate components"

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Type AC 322 /3 Type AC 322 /1A Type AC 322 /2A

Type AC 322 /2AW

See also Chapter 6.2, "Accessories, spare parts and separate components"

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Type AC 603 /3 Type AC 603 /1A Type AC 603 /2A

Type AC 603 /2AW Type AC 603 /3A

See also Chapter 6.2, "Accessories, spare parts and separate components"

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