Festo DPA-***-A Series Bedienungsanleitung

(en) Operating

instructions

Pressure booster

DPA

8080164

2017-07e

[8080166]

DPA

Festo DPA 2017-07e

Translation of the original instructions

Symbols: Installation and commissioning may only be per

formed in accordance with these instructions by

technicians with appropriate qualifications.

Warning

Caution

Note

Environment

Accessories

English 3.........................................................................

DPA

Festo DPA 2017-07e English 3

Pressure booster DPAEnglish

Documentation on the product

For all available product documentation èwww.festo.com/pk

1 Operating elements and ports

DPA-40 DPA-63/100

1Pneumatic connection 1 for input pressure

2Pneumatic connection 2 for output pressure

3Pneumatic connection 3 for exhaust air

4Rotary knob for output pressure (not DPA-…-D)

5Manual override

6Exhaust hole; sealed with sintered filter

7Valve exhaust port (on the right and left of

the valve sub-base); DPA-40 with silencers in

scope of delivery

8Threaded holes for fastening

Fig. 1

DPA

Festo DPA 2017-07e English

2 Function and application

The type DPA pressure booster has been designed for increasing the pressure in

air supply lines. Due to its two coupled pressure chambers, the DPA functions as

a double piston compressor. No external energy other than compressed air is re

quired to operate the DPA. Once the input pressure has been applied, the DPA

starts up automatically. An integrated way valve conducts the pressure, which is

applied constantly at pneumatic connection 1, alternately into one compression

chamber then into the other. These generate an output pressure of up to double

the value of the input pressure. On pressure boosters with a controller, the pres

sure increase can be reduced by setting the rotary knob. When the set output pres

sure is reached, the DPA stops operating to save energy but restarts automatically

if the pressure drops due to application operation.

With the DPA-…-A it is possible to record the individual strokes of the drive piston

using an external sensor and an adding counter.

Note

Pressure boosters are intended to occasionally relieve compressed air. Pressure

boosters are not suitable for use as compressor replacements, as wear on seals

and drive pistons increases significantly during continuous operation without

breaks.

3 Conditions of use

Note

Incorrect handling can result in malfunctioning.

SMake sure that the following specifications are always observed:

SCompare the maximum values specified in these operating instructions with

your actual application (e.g. operating media, pressures, forces, temperatures,

masses, flow rates).

SEnsure that there is a supply of correctly prepared compressed air.

STake into consideration the ambient conditions at the location of use.

SPlease comply with national and local safety laws and regulations (e.g. Safety

regulations as per EN 1012, part 1).

DPA

Festo DPA 2017-07e English 5

SUse a three-way on-off valve on the input side of the DPA.

SUse a three-way on-off valve on the output side of the DPA.

In this way, the downstream switched system can be exhausted quickly.

SRemove the packing with the exception of the self-adhesive labels on the

compressed air connections (to prevent dirt from entering).

It is intended that the packaging be recycled on the basis of its constituent

materials (exception: oiled paper = other waste).

SPlease observe the warnings and instructions

– on the product and

– in these operating instructions.

SUse the product in its original state. Unauthorised modification is not

permitted.

4 Transport and storage

Warning

Falling loads may cause personal injuries.

STake the weight of the DPA into consideration. Depending on the version,

the DPA can weigh up to 13 kg.

The rotary knob must not be used as a support for transporting the DPA

because the large load may dislodge the rotary knob.

DPA

Festo DPA 2017-07e English

5 Installation

Mechanical

Note

The DPA must not be installed on the controller thread because the controller

thread may be destroyed under the load of the DPA.

Fasten the DPA in one of the following ways only:

Type Fastening method1) Fastening

DPA-40 Direct fastening – with 4 screws (M4) in

the threaded holes of the

DPA. Tightening torque

2 Nm.

With FDPA-40

flange mounting

accessory

– Flange with 4 screws

(M4) in the threaded

holes of the DPA.

Tightening torque 2 Nm.

– Fit the flange to the wall

with 2 screws (M5).

DPA-63/100 Direct fastening – With 4 screws (M10) in

the threaded holes of

the DPA. Tightening

torque 30 Nm.

With HUA foot

mounting acces

sory (2x)

– Foot mounting, with two

screws each in the

threaded holes of the

DPA on the right and left.

Tightening torque 30 Nm.

1)The exhaust hole and both valve exhaust ports (6/7èFig. 1) must not be sealed.

DPA

Festo DPA 2017-07e English 7

Fitting the proximity sensors for sensing option (DPA-…-A only) èFig. 2

SFasten the proximity sensor1in one

of the 6 available sensor grooves on

the right-hand side of the DPA (rotary

knob top, pneumatic ports front). The

proximity sensor must be positioned

in the middle of the cylinder barrel.

SConnect the proximity sensors to the

adding counter.

Note

The proximity sensor records each individual stroke of the drive piston. In order

to arrive at the usual count of double strokes, the number of individual strokes

has to be halved.

Information of the proximity sensor and the adding counter can be found in the

operating instructions for these products.

Pneumatic connection for input pressure, output pressure, exhaust air

Note

Incorrectly dimensioned cable cross-sections can impair the timing behaviour of

downstream switched components.

SUse hoses with a minimum inner diameter or the hose types recommended in

Fig. 3 for the input and output pressure.

SUse a silencer for the exhaust air. If the exhaust air is to be ducted, it must be

vented relative to atmosphere.

The exhaust air from both valve exhaust ports (7èFig. 1) must not be

ducted.

SCheck whether an air reservoir is required. In this way you will avoid pressure

fluctuations.

Fig. 2

DPA

Festo DPA 2017-07e English

SConnect the tubing to the supply ports as per Fig. 3.

With an output pressure greater than 10 bar, make sure that the permitted

limits for the connecting elements used at output 2are observed (if

necessary connect the tubing to the DPA).

DPA-40 DPA-63/100

Fig. 3

Type DPA-40 DPA-63 DPA-100

Connection number 1Pneumatic connection 1 for input pressure

2Pneumatic connection 2 for output pressure

3Pneumatic connection 3 for exhaust air

Pneumatic connection 1/2G¼GyG½

3M7 GyG½

Tightening torque 1/215 Nm 25 Nm 40 Nm

32 Nm 25 Nm 40 Nm

Inner hose diameter/

recommended hose

type

17 mm/

PAN-10x1.5

12 mm/

PAN-16x2

12 mm/

PAN-16x2

25 mm/

PAN-R-8x1.25

10 mm/

PAN-R-16x3

10 mm/

PAN-R-16x3

DPA

Festo DPA 2017-07e English 9

Pneumatic connection for pressure gauges èFig. 4

1. Remove the screws plugs from the pressure gauge ports 4.

2. DPA-40 only:

Seal off the pressure gauges with PTFE tape.

The pressure gauges for the DPA-63/100 have a PTFE coating. It is not necessary

to seal them with PTFE tape.

3. Firmly screw the pressure gauges into the ports 4clockwise by hand. Pressure

gauge (A) shows the input pressure, pressure gauge (B) shows the output pres

sure.

Use pressure gauges with a sufficient dial to show the input and output pressure

(è10 Technical data). To show the output pressure, a pressure gauge with a

larger final value on the dial is required.

Exception: The DPA-…-10-MA-SET pressure gauge set (è8 Accessories) contains

two identical pressure gauges with a sufficient dial for the DPA-…-10.

DPA-40-10/16/D DPA-63/100-10/16

DPA-63-D DPA-100-D

(A)

(B)

Fig. 4

4. Align the pressure gauge with the spanner by screwing it in further by a maximum

of 1.5 turns.

DPA

Festo DPA 2017-07e English

6 Commissioning

Warning

Sudden expulsion of compressed air can cause injuries.

SMake sure that the compressed air outputs of the DPA for output air 2and

exhaust air 3are connected (èFig. 3).

Note

High compressed air forces can damage equipment further along the com

pressed air path.

SMake sure that equipment connected downstream of the DPA is designed

to withstand the maximum output pressure which can be achieved.

Note

The three-way on-off valve on the input side of the DPA must not be opened

until the pressure in the system has been built up.

First open the three-way valve on the input side, then the three-way on-off valve

on the output side.

Note

The output pressure on pressure boosters without a controller is twice the

input pressure.

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