Parker D31DW*EE, D*1VW*EE, D31NW*EE Operating Instructions Manual

Bulletin HY11-5715-681/UK

Pilot Operated
Proportional DC Valve

Operating instructions

Series
D31DW*EE, D31NW*EE, D*1VW*EE

Design series 92
II 2 G c T4 Gb

-20 °C < T

a < +60 °C

Parker Hannifin
Manufacturing Germany GmbH & Co. KG

Hydraulic Controls Division Europe
Gutenbergstr. 38
41564 Kaarst, Germany
Tel.: [phone]
E-mail: [e-mail]
Copyright © 2013, Parker Hannifin Corp.

2

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Note

This document and other information from Parker-Hannifin Corpo­ration, its subsidiaries and authorized distributors provide product
or system options for further investigation by users having techni­cal expertise.
The user, through its own analysis and testing, is solely responsible for
making the final selection of the system and components and assur­ing that all performance, endurance, maintenance, safety and warn­ing requirements of the application are met. The user must analyze all
aspects of the application, follow applicable industry standards, and
follow the information concerning the product in the current product
catalog and in any other materials provided from Parker or its subsid­iaries or authorized distributors.
To the extent that Parker or its subsidiaries or authorized distributors
provide component or system options based upon data or specifica­tions provided by the user, the user is responsible for determining that
such data and specifications are suitable and sufficient for all applica­tions and reasonably foreseeable uses of the components or systems.

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

3

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

0. EC declaration of conformity 4

1. Introduction 5
Ordering code 6

Technical data 8

Characteristic curves 9
Pilot oil 11
Dimensions 12
Name plate 15

2. Safety instructions 15

Symbols 15
Marking, Name plates 15
Work on the valve 16

3. Important information 16

Correct use 16
Common instructions 16
Liability 16
Storage 16

4. Installation 17

Scope of delivery 17
Installation 17
Electrical connection 17
Operation limits 17
Pressure fluids 17

5. Operating instructions 20

Air bleeding of hydraulic system 20
Filter 20
Flushing 20

6. Maintenance 20

7. Troubleshooting 21

A1 Extract from standards/directives 22

A2 User guide – Solenoid 23

A3 Type-examination certificate – Solenoid 27

A4 Declaration of conformity - Solenoid 32

A5 Mounting instruction cable gland 33

Contents Page

4

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

0. EC declaration of conformity

EG KONFORMITÄTSERKLÄRUNG
DECLARATION OF CONFORMITY
DECLARATION DE CONFORMITÉ

im Sinne der EG-Richtlinie 94/9/EG vom 23.03.1994 und mit den zu ihrer Umsetzung erlassenen Rechtsvorschriften
Pursuant to European Directive 94/9/EC dated 23 March 1994 and statutory provisions relating to its implementation
Dans le sens de la directive 94/9/CE datée du 23 3 1994 et des prescriptions légales promulguées quant à son
application,

Wir Parker Hannifin GmbH
We
Nous

Anschrift Gutenbergstraße 38
address DE-41564 Kaarst
adresse

erklären, dass die in der Betriebsanleitung beschriebenen, explosionsgeschützt ausgeführten vorgesteuerten Wegeventiles
hereby declare that, as described in the operation instructions, the explosion-proof pilot operated DC valve
déclarons que, comme décrit dans ce mode d’emploi, les soupapes antidéflagrantes type distributeur à commande pilotée

der Serie D31DW*EE, D31NW*EE,
series D*1VW*EE
de la série

Geräte im Sinne des Artikels 1 (3) der RL 94/9/EG sind und die grundlegenden Sicherheits- und Gesundheitsanforderungen
gemäß Anhang II der Richtlinie 94/9/EG erfüllen.
are equipment as defined in Article 1 (3) of Directive 94/9/EC and comply with the essential health and safety requirements
set out in Annex II of Directive 94/9/EG.
correspondent aux appareils dans le sens de l’article 1 (3) de la directive RL 94/9/CE et qu’ils remplissent les exigences
fondamentales relatives à la sécurité et la santé selon l’annexe II de la directive 94/9/CE.

Die grundlegenden Sicherheits- und Gesundheitsanforderungen werden erfüllt in Übereinstimmung mit folgenden Normen:
The essential health and safety requirements are met in accordance with the following standards:
Les exigences relatives à la sécurité ainsi qu’à la santé sont remplies en conformité avec les normes suivantes:

EN 1127-1
EN 13463-1
EN 13463-5
EN 982

Die Kennzeichnung der Geräte enthalten folgende Angaben:
The marking of the equipment contains the following information:
Les marquages des appareils contiennent les indications suivantes :

II 2 G c T4 Gb

-20 °C ≤ Ta ≤ +60 °C

Der korrekte Gebrauch der Geräte bei Installation und Betrieb wird vorausgesetzt. Details zum korrekten Gebrauch (ein­schließlich Explosionsschutz) sind in der Betriebsanleitung zu finden.
It is assumed that the equipment will only be installed and operated in accordance with correct use. Details of correct use
can be found in the operating instructions incl. explosion protection.
Il est obligatoire d’installer et d’utiliser les appareils de la manière correcte. Le mode d’emploi contient des détails pour
l’utilisation correcte, comprenant la protection antidéflagrante.

Kaarst, 03.12.2012

Technischer Leiter QM-Beauftragter
Technical manager QM officer
Directeur technique Responsable qualité
Hansgeorg Kolvenbach Wolfgang Bausch

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

5

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

D31DW

D91VW

D31NW D41VW

D91VW D111VW

1. Introduction

The D*1*W*EE with explosion proof solenoids are
based on the standard D*1*W series. The specif­ic solenoid design allows the usage in hazardous
environments.

The explosion proof class is

Ex mbe II T4 Gb
for use in zone 1 (conform to ATEX).
All explosion proof solenoids are DC design. The

valves for AC operate with integrated rectifier.
The pilot operated valves are available in 4 sizes:
D31DW NG10 (standard)
D31NW NG10 (high flow)
D41VW NG16
D91VW NG25 (for port diameter up to 32 mm)
D111VW NG32
All valves are piloted by a D1VW valve. The mini-

mum pilot pressure must be ensured for all oper­ating conditions of the directional valve.

Additionally spools with a P to T connection in the
de-energized position need an external pressure
supply (external inlet) or an integral check valve.

6

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Series Spool type

3 position spool

Code Spool type

a 0 b

001

2)

002

2)

003

3)

004

3)

005

3)

006

3)

009

1) 2)

011

3)

015

3)

016

3)

021

3)

022

3)

2 position spool

Code Spool type

a b

020

2)

030

2)

3 position spool

Code Spool position

C

2)

3 positions.
Spring offset in position “0“.
Operated in position “a“ or “b“.

Standard Spool type 009

E

2)

Operated in
position “a“.

Operated in
position “b“.

2 positions.
Spring offset in position “0“.

F

2)

Spring offset in

position “b“.

Spring offset in

position “a“.

2 positions.
Operated in position “0“.

K

2)

Operated in
position “b“.

Operated in
position “a“.

2 positions.
Spring offset in position “0“.

M

2)

Spring offset in

position “a“.

Spring offset in

position “b“.

2 positions.
Operated in position “0“.

R

3)

No centre in

offset position.

No centre in

offset position.

2 positions, detent.
Operated in position “0“ or “b“.

S

3)

No centre in

offset position.

No centre in

offset position.

2 positions, detent.
Operated in position “0“ or “a“.
No center in offset position.

2 position spools

Code Spool position

B

2)

Spring offset in position “b“.
Operated in position “a“.

D

3)

Detent, operated in position
“a“ or “b“. No center or offset
position.

H

2)

Spring offset in position “a“.
Operated in position “b“.

Spool

position

Code Bore Size Feature
D31DW Ø11mm NG10
D31NW Ø11mm NG10 High flow
D41VW Ø20mm NG16
D91VW Ø32mm NG25

D111VW Ø50mm NG32

Ordering code

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

7

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Solenoid

options:

Explosion

proof

Ex mbe II

Solenoid

voltage

Pilot oil

supply

and drain

options

Accessories

Further spool types and solenoid voltages on request.

Connection:

Explosion
proof with

cable glands

Seals

Code Seal

N NBR

V FPM

Code Solenoid voltage

J 24V =

N 230 V/50 Hz
P 110 V/50 Hz

Code Inlet Outlet

1 Internal External

2 External External

3

4)

Integral

check valve

External

4

5)

Internal Internal

5 External Internal

6

4)

Integral

check valve

Internal

Code Accessories

ohne

Standard valve

w/o accessories

3A Pilot choke, meter-out

3B Pilot choke, meter-in

3C

Pilot with pressure

reducing valve

3D

6)

Stroke adjustment

side B

3E

6)

Stroke adjustment

side A

3F

Stroke adjustment

side A and B

3R

meter-out / pressure

reducing valve

1T

meter-in / pressure

reducing valve

Design

series

(not required

for ordering)

1)

Consider specific spool position.

2)

All sizes (D31, D41, D 91, D111) available

3)

Only D31, D41, D91 available.

4)

Not for D31DW and D111VW available.

5)

Not for spools 002, 009 available.

6)

Only D31, D41, D91 available.

E

E

8

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

60 / 40 (50/60) 95 / 65 150 / 170 470 / 390
55 / 40 (50/60) 75 / 65 110 / 170 320 / 390
55 / 40 (50/50) 60 / 65 90 / 170 210 / 390
55 / 40 (50/50) 60 / 65 85 / 170 200 / 390
40 / 30 (30/50) 75 / 55 130 / 155 450 / 375
35 / 30 (30/50) 65 / 55 90 / 155 300 / 375
35 / 30 (30/50) 40 / 55 70 / 155 190 / 375
35 / 30 (30/50) 40 / 55 65 / 155 180 / 375

General

Design Directional spool valve
Actuation Solenoid
Series D31DW D31NW D41VW D91VW D111VW
Size NG10 NG10 NG16 NG25 NG32
Weight (1/2 solenoids) [kg] 6.0 / 6.6 7.6 / 8.1 9.7 / 10.3 17.9 / 18.6 67.4 / 68.0
Mounting interface DIN 24340

A10

DIN 24340

A10

DIN 24340

A16

DIN 24340

A25

DIN 24340

A32

ISO 4401 ISO 4401 ISO 4401 ISO 4401 ISO 4401

NFPA D05 NFPA D05 NFPA D07 NFPA D08 NFPA D10

CETOP RP 121-H
Mounting position unrestricted, preferably horizontal
Ambient temperature [°C] -20...+60
MTTF

D

value [years] 75

Hydraulic

Max. operating pressure [bar] P, A, B: 350; T: 140
Fluid Hydraulic oil in accordance with DIN 51524 / 51525
Fluid temperature [°C] -25 ... +60
Viscosity permitted [cSt] /
recommended [cSt] /

[mm²/s]
[mm²/s]

2.8...400

30...80
Filtration ISO 4406 (1999); 18/16/13
Flow max. [l/min] 150 170 300 700 2000
Leakage at 350 bar (per flow path) [ml/min] up to 100* up to 150* up to 200* up to 800* up to 5000*
*depending on spool
Opening pressure integral check valve [bar] n.a. see p/Q

diagram

see p/Q
diagram

see p/Q
diagram

n.a.

Minimum pilot supply pressure [bar] 5 7 5

Static / Dynamic

Step response at 95 % [ms] Energized / De-energized
DC solenoids Pilot pressure 50 bar

100 bar
250 bar
350 bar

AC solenoids Pilot pressure 50 bar

100 bar
250 bar
350 bar

Electrical characteristics

Duty ratio 100 % ED; CAUTION: coil temperature up to 135 °C possible
Protection class

, Ex mbe II T4 Gb, IP66 (plugged and mounted correctly)

Code

J N P

24 V = 230/50 Hz 110/50 Hz

±10 ±10 ±10

1.0 0.12 0.25
24 24 24

Supply voltage / ripple [V]
Tolerance supply voltage [%]
Current consumption [A]
Power consumption [W]
Solenoid connection Box with M20x1.5 entry for cable glands. Solenoid identification as per

ISO 9461.
Wiring min. [mm²] 3 x 1.5 recommended
Wiring length max. [m] 50 recommended

With electrical connections the protective conductor (PE W) must be connected according to the relevant regulations.

Technical data

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

9

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

D31DW and D41VW

Spool
Code

Curve number

P-A P-B P-T A-T B-T

D3 D4 D3 D4 D3 D4 D3 D4 D3 D4
001 3 1 3 1 – – 1 4 1 5
002 3 1 3 2 4 6 1 4 1 6
003 3 1 4 2 – – 1 5 1 6
004 3 1 3 1 – – 1 5 1 5
005 3 2 4 2 – – 1 3 1 5
006 3 1 3 2 – – 1 3 1 6
007 4 1 3 1 – 6 1 4 1 5
009 3 2 3 9 8 8 1 7 1 10
011 3 1 3 1 – – 1 4 1 5
014 3 1 4 1 – 6 1 4 1 5
015 4 1 3 2 – – 1 4 1 6
016 4 2 3 2 – – 1 3 1 5
020 3 3 4 5 – – 1 3 1 5
021 4 2 3 8 – – 1 2 – –
022 3 8 4 2 – – – – 1 3
026 3 3 3 5 – – – – – –
030 3 2 1 3 – – 1 6 1 7
054 – 2 – 3 – – – 6 – 7

Flow curves

The flow curve diagram shows the flow versus
pressure drop curves for all spool types. The rel-

Spool

Code

Curve number

P-A P-B P-T A-T B-T
001 3 3 – 2 5
002 3 3 7 4 3
003 2 3 – 4 4
004 2 3 – 4 4
005 2 4 – 1 4
006 8 9 – 7 9
009 4 6 6 4 10
011 3 3 – 2 4
015 2 2 – 1 4
016 4 3 – 2 4
020 6 4 – 3 6
021 – 7 – 8 –
022 4 – – 9 –
030 5 3 – 2 5

D31NW

All characteristic curves measured with HLP46 at 50 °C.

evant curve number for each spool type, operat­ing position and flow direction is given in the ta­ble below.

10

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Flow curves / Integral check valve

Spool

Code

Curve number

P-A P-B P-T A-T B-T

D9 D11 D9 D11 D9 D11 D9 D11 D9 D11
001 3 5 2 5 – – 3 4 5 1
002 2 5 1 5 1 5 3 4 5 1
003 4 – 2 – – – 3 – 6 –
004 4 – 3 – – – 3 – 5 –
005 1 – 2 – – – 4 – 5 –
006 2 – 2 – – – 4 – 6 –
007 3 – 1 – 7 – 3 – 5 –
009 4 3 8 3 9 2 4 3 10 1
011 3 – 2 – – – 3 – 5 –
014 1 – 2 – 8 – 3 – 5 –
015 3 – 3 – – – 4 – 5 –
016 3 – 3 – – – 4 – 5 –
020 6 5 5 5 – – 6 3 8 1
021 5 – 10 – – – 3 – – –
022 10 – 5 – – – – – 5 –
026 6 – 5 – – – – – – –
030 3 5 2 5 – – 3 4 5 1
054 4 5 3 5 – – 3 4 5 1

D91VW and D111VW

Integral check valve in the P port

Mounting an integral check valve in the P port is
necessary to build up pilot pressure for valves with
P to T connection and internal pilot oil supply. The
pressure difference at the integral check valve
(see performance curves) is to be added to all flow
curves of the P-port of the main valve. Direction­al valves with an integral check valve are available
for the series D31NW and D41VW.

Flow curve D41VW

Flow curve D91VWFlow curve D31NW

Pressure drop p [bar]

Flow Q [l/min]

100

200 300 400

500

600 700

10 9 8 7 6 5 4

14
12

10

8

6

4

2

0

0

D91VW

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

11

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

D111VW

D91VW

D41VW

Pilot oil inlet (supply) and outlet (drain)
D31DW

D31NW

All orifice sizes for standard valves

12

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Dimensions
D31DW

Surface finish

BK385

4x M6x40

ISO 4762-12.9

13.2 Nm
±15 %

NBR: SK-D31DW-N-91

FPM: SK-D31DW-V-91

D31NW

Surface finish

BK385

4x M6x40

ISO 4762-12.9

13.2 Nm
±15 %

NBR: SK-4D02V-B1
FPM: SK-4D02V-B5

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

13

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Ø13.5

23076

57

238

130

116
118

12

A B

B A

D91VW

Surface finish

BK360

6x M12x75

ISO 4762-12.9

108 Nm

±15 %

NBR: SK-D81VW-N-91 / SK-D91VW-N-91

FPM: SK-D81VW-V-91 / SK-D91VW-V-91

D41VW

Surface finish

BK320

4x M10x60

2x M6x55

ISO 4762-12.9

63 Nm ±15 %

13.2 Nm ±15 %

NBR: SK-D41VW-N-91

FPM: SK-D41VW-V-91

14

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Ø22

96 325

59

200

198

229

362

20

A B

B A

D111VW

Surface finish

BK386

6x M20x90

ISO 4762-12.9

517 Nm

±15 %

NBR: SK-D111VW-N-91

FPM: SK-D111VW-V-91

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

15

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Name plate

Symbols

These instructions use symbols that must be not­ed according to their importance:

Notes relating to the warranty

Notes relating to potential damage to the

valve or connected system components

Notes relating to potential hazards

Useful additional information

Marking, Name plates

Information attached directly to the valve such as
circuit plans and Name plates must be observed
and kept in a legible state.

2. Safety instructions

Read the operating instructions thoroughly before
installation, commissioning, maintenance, repair
and storage, and observe them. Failure to observe
the operating instructions may result in damage to
the valve or the parts of the system connected to it.
In particular, in the case of explosive atmospheres,
any failure to observe the operating instructions
may result in an explosion.
The system operator must make these operating
instructions visible and easily accessible to oper­ating and maintenance personnel.
Compliance with applicable standards/legal re­quirements must be enforced. This particularly ap­plies to plant safety and environmental protection.
A list of such standards, etc. appears in the annex
by way of example.
Before starting commissioning, installation, main­tenance and repair work, the hydraulic system
must be depressurised and power must be discon­nected from the electrical installation.
In addition, the electrical installation must be se­cured so that power cannot be restored unex­pectedly.
The valve may become hot during operation. To
avoid risk of burns, do not touch the valve surface.
The system operator must monitor the tempera­ture and cool the oil if necessary in order to the

Manufacturer's logo and address
CE mark, Ex protection symbol and explosion protection class

of the complete valve to European Directive 94/9/EC
Entire name of the complete valve
Hydraulic data
Code for year and month of manufacture
Hydraulic symbol

keep within the maximum temperatures set out in
these operating instructions (see technical data).
In this connection, observe the relevant directions
in the operating instructions of the supplier (sole­noid system).
Any leaks occurring at the valve must be rectified
immediately.

16

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

3. Important information
Correct use

These operating instructions apply to propor-

tional DC valves of series D1VW*EE, which
are intended solely for use in mineral oil based
hydraulic systems (DIN 51524).

Compliance with the operating instructions must
be ensured.
It is the responsibility of the operator to ensure that
the information in the technical data is followed.
Any different or modified use is not classed as
correct use.
The manufacturer's warranty will not cover any re­sulting damage.

Storage time Storage requirements
12 months constant air humidity < 60 %

constant temperature < 25 °C

6 months varying air humidity,

varying temperature < 35 °C

Common instructions

We reserve the right to make technical changes
as a result of further development of the product
described in these operating instructions. Figures
and drawings in these instructions are simplified
depictions. As a result of further development, im­provements and changes to the product, it is pos­sible that the figures are not fully consistent with
the described valve.
The technical details and dimensions are non-bind­ing. They may not form the basis of any claims.
Copyright reserved.

Liability

The manufacturer cannot accept liability for loss or
damage resulting from the following faults:

•฀incorrect installation

•฀unqualified operation

•฀inadequate maintenance

•฀use beyond specification

Do not dismantle the valve. If you suspect a

defect, return the valve to the factory.

Storage

If the valve needs to be temporarily stored, it must
be protected from dirt, the weather, and mechan­ical damage. Each valve is tested with hydraulic
oil in the factory, so that the internal components
are protected from corrosion. However, this pro­tection can only be guaranteed under the follow­ing conditions:

Storage outside or in maritime or tropical

climates leads to corrosion and may make
the valve unusable.

Work on the valve

Work relating to the installation, commissioning,
maintenance and repair of the valve may only be
carried out by qualified persons. Qualified persons
are defined as persons who, on the basis of edu­cation, experience and instruction, have sufficient
knowledge of applicable requirements and accept­ed rules of the technology.
Throughout any installation, commissioning, main­tenance and repair work, it is the responsibility of
the operator to ensure that there is no risk of ex­plosion.
Before starting such work, the operator has to en­sure that tools and equipment are only used if they
do not damage the valve and they do not leave be­hind residues that are inflammable.
In addition, clean the valve before starting such
work, in particular removing dust, liquids and oth­er deposits. Cleaning should be done using a lint­free cloth.
Tools may not be used if they might cause a stat­ic charge on use.

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

17

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

4. Installation
Scope of delivery

As soon as you receive the valve you should check
if the package has the specified contents. In par­ticular, check whether the type of protection indi­cated on the valve is as described in these oper­ating instructions.

The scope of delivery includes:

•฀Valve

•฀ Operating instructions (including operating in-

structions of the valve as well as of the solenoid
and the declarations of conformity of the man­ufactures)

As soon as you receive the shipment, please

check for any obvious signs of damage caused
by careless transport. Document the transport
damage and immediately notify the carrier,
the insurance company and the supplier.

Installation

•฀Compare the valve type as stated on the Name

plate with the parts list/circuit diagram.

•฀The valve can be installed in any position, ei-

ther fixed or movable.

Check the fixing surface and the cavity for

the valve. Permitted values: unevenness 0.01
mm/100 mm, roughness Rmax = 6.3 µm. Keep
the valve mounting surface and the area clean.

•฀ Before installation, remove the protective cov-

er from the valve ports.

•฀ Check that the valve ports and the O-rings are

in the correct position.

•฀ Use fastening screws as indicated in the cata-

logue, property class 12.9 to ISO 4762.

Parker can supply the correct screw sets, see

the catalogue for order numbers.

•฀ Tighten the screws diagonally, torque as spec-

ified in the catalogue.

•฀ Any deficiencies of the valve mounting surface

may result in operating disruptions. Faulty fix­ing and incorrect screw tightening torques may
lead to the sudden escape of hydraulic fluid at
the ports.

•฀The valve must be connected to the equipo-

tential bonding system of the hydraulic system.

Electrical connection

Observe operating instructions D14-2115D and
K14-2069D in the annex.

Operation limits

The valve may only be deployed with the specified
limits of use. The relevant details can be found in
the catalogue sheet under "Technical data" and
"Characteristic curves".

Observe the ambient conditions. Unauthor-

ised temperatures, shocks, the effects of
aggressive chemicals, radiation, unauthorised
electromagnetic emissions may result in
disruptions and failures. Observe the limits
of operation set out in "Technical data".

Excessive temperatures may cause the

solenoid to overheat, creating the risk of ex­plosion. To permit adequate heat dissipation,
the solenoid coil should not be painted.

Pressure fluids

For details of valve operation using different pres­sure fluids, see HY11-AL103-M1.

The details given here are provided for informa-

tion only and do not replace in-house testing
under the applicable operating conditions. In
particular, the details cannot be interpreted
as a guarantee of media compatibility.

For detailed information about pressure flu-

ids, see VDMA sheet 24317 and DIN 51524,

51502. Special sealing materials are supplied
depending on the fluid used. Please ask the
factory if you are unsure.

The pressure fluid must have an ignition tempera­ture of at least 50 K above the maximum surface
temperature of the valve (see EN 13463-5 and
IEC 60079-4).

18

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Size 16, mounting pattern ISO 4401-07-07-0-05

Size 10, mounting pattern ISO 4401-05-05-0-05

With * marked dimensions ± 0.1mm.
All other dimensions ± 0.2mm.

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

19

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Size 25, mounting pattern ISO 4401-08-08-0-05

Size 32, mounting pattern ISO 4401-10-09-0-05

With * marked dimensions ± 0.1mm.
All other dimensions ± 0.2mm.

20

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

5. Operating instructions
Air bleeding of hydraulic system

The hydraulic system must be vented on initial
commissioning, after an oil change or after lines
or valves are opened. Air in the hydraulic system
is highly detrimental to the behaviour of the control
system and is therefore undesirable. Air bleeding
takes place at the highest point of the pipe network.

Loosen the vent screw slightly, allowing air to es­cape until oil flows. When the escaping oil no long­er contains air bubbles, tighten the screw again.
Then work through all functions in succession, in
no-load operation with the lowest possible pres­sure, and with the full consumer range. Finally, vent
the system again.

After air bleeding, check the oil level in the

tank and top up with oil if necessary.

Filter

The operation and service life of the valve are
highly dependent on the cleanliness of the pres­sure fluid.

Dirt is the biggest enemy of a hydraulic system.

Be aware of three important sources of contam­ination:

•฀ impurities entering during installation

•฀ impurities occurring during operation, abrasion

•฀dirt entering from the surroundings

Pressure filters must always be used with propor­tional valves. For actual values, see the data sheet.

Follow the maintenance instructions.

Flushing

With large central pressurised oil stations in

particular, you are recommended to flush the
long pipes by short circuiting the pressure and
return lines.

This prevents the dirt occurring during instal-

lation from being carried to the valve.

6. Maintenance

Maintenance procedures may only be car-

ried out by specialist personnel. A detailed
knowledge is required of how the machine is
switched on and off and also of the necessary
safety measures.

Regular maintenance is essential in prolonging
the service life of the systems, and safeguards
plant safety and operational availability. The fol­lowing items must be checked at regular and short
intervals:

•฀Oil level in tank

•฀Max. medium temperature

•฀Max. surface temperature

•฀ Condition of the pressure fluid (sight check, col-

our and smell of hydraulic fluid)

•฀Operating pressures

•฀ Preload pressure of pressure vessel (if present)

•฀ No leaks at any system components

•฀Condition of the filter elements

•฀Condition of the hose lines

•฀Cleanliness of components

After a certain period of service, the hydraulic flu­id must be replaced. The frequency of the change
depends on the following circumstances:

•฀ Type and grade of pressure fluid (ageing)

•฀Filtration

•฀ Operating temperature and ambient conditions

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

21

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

7. Troubleshooting

A systematic approach must always be used in the
troubleshooting process. Begin by answering the
following questions:

•฀ Does anyone have practical experience of sim-

ilar faults?

•฀ Have any of the settings been changed in the

system?

Now try to identify the fault using a prioritised list
of the most likely causes.

•฀ If you suspect that the valve is not moving free-

ly, you should flush the valve with clean pres­sure fluid.

•฀ A systematic approach should always be adopt-

ed when troubleshooting a hydraulic system.

The work must only be carried out by special­ist personnel because detailed knowledge of the
function and structure of the system is required.
Always think carefully about changing settings or
removing components. Before starting work, check
that the system was working correctly before the
fault occurred.
Following any repair, commissioning must be car­ried out as instructed.

22

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

A1.
Standards, directives and provisions relating to the operation of systems in potentially explo-

sive areas (extract)

Directive 1999-92-EC Minimum requirements for improving the safety and health protection of workers

potentially at risk from explosive atmospheres (15th individual Directive within
the meaning of Article 16(1) of Directive 89/391/EEC)

EN 60529 Degrees of protection provided by enclosures (IP code) IEC 60529:1989 +

A1:1999); German version EN 60529:1991 + A1:2000

EN 982 Safety of machinery - Safety requirements for fluid power systems and their

components – Hydraulics

BGR 132 Elimination of fire hazards caused by static charges
(see also CENELEC Report-No. R044-001)

EN 60079-14 Electrical apparatus for explosive gas atmospheres - Part 14: Electrical instal-

lations in hazardous areas (other than mines) (IEC 60079-14:2002)

EN 60079-17 Explosive atmospheres - Part 17: Electrical installations inspection and main-

tenance (IEC 60079-17:2007)

EN ISO 12100-1 Safety of machinery - Basic concepts, general principles for design – Part 1:

Basic terminology, methodology (ISO 12100-1:2003)

EN ISO 12100-2 Safety of machinery - Basic concepts, general principles for design – Part 2:

Technical principles (ISO 12100-2:2003)

EN 61241-14 Electrical apparatus for use in the presence of combustible dust – Part 14:

Selection and installation (IEC 61241-14:2004)

EN 61241-17 Electrical apparatus for use in the presence of combustible dust – Part 17:

Inspection and maintenance of electrical installations in hazardous areas (oth­er than mines) (IEC 61241-17:2005)

BetrSichV Betriebssicherheitsverordnung
National industrial safety regulation
and the enclosed Technical Regulations.

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

23

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

A2. User guide – Solenoid

24

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

25

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

26

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

27

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

A3. Type-examination certificate – Solenoid

28

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

29

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

30

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

31

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

32

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

A4. Declaration of conformity - Solenoid

Pilot Operated Proportional DC Valve

Series D*W*EE Explosion Proof

Operating Instructions

33

Parker Hannifin Corporation

Hydraulics Group

D_W_EE_92 5715-681 UK.indd CM 07.05.13

A5. Mounting instruction cable gland