GMV DLV-A3 User Manual

English

DLV VALVE

DLV-A3

VALVE MANUAL

I

NSTALLATION AND USE

A

VAILABLE WITH VALVE TYPE

3010 ¾”,1 1/4”, 1 ½”, 2”, NGV ¾”

1 0991 486 EN

GMV SPA

FLUID DYNAMICS EQUIPMENTS
AND COMPONENTS FOR LIFTS

UNI EN ISO 9001
Certified Company

ENG

ENG

1 0991 486 EN - 29.09.2016

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INDEX

I

NSTALLATION, USE AND MAINTENANCE

VALVE MANUAL

0 GENERAL SECTION 3

0.1 INTRODUCTION 3

0.2 INSTALLATION RELATED DOCUMENTS 3

0.3 SAFETY PRECAUTION DURING INSTALLATION 3

0.4 GENERAL ORDERS 4

0.5 LIABILITY AND WARRANTY 4

1 FEATURES AND REQUIREMENTS 4

1.1

DLV A3 VALVE

1.2

DELIVERY PACKAGING

1.3

IDENTIFICATION PLATE

1.4 T

HE FLUID

1.5

CLEANING AND SAFETY PROTECTIONS

4

5

5

5

6

2 DLV A3 WORKING DESCRIPTION 6

2.1

DESCRIPTION

2.2

HYDRAULIC SCHEME

2.1

SEMPLIFIED HYDRAULIC SCHEME

6

7

7

3 INSTALLATION 8

3.1 H

YDRAULIC CONNECTION SAMPLES

3.2 D

IMENSIONS

9

8

4 ELETTRICAL CONNECTIONS 9

4.1

ELECTRICAL GETTING STARTED:ICONS

10

5 TEST AND ADJUSTMENTS 10

5.1

MONITORING SYSTEM CHECK

6 CERTIFICATES 11

10

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VALVE MANUAL

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NSTALLATION, USE AND MAINTENANCE

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0 GENERAL SECTION

0.1 INTRODUCTION

Assembling,installation,start-up and hydraulic lift maintenance should be performed by experienced
personnel.Before starting any work on the hydraulic components,personnel showld carefully read these
instructions,particularly referring to 0.3 chap. “Safety precautions”.
This “Instruction Manual” in an integral part of the lift and should be protected and accessible.

DLV is a non return electrically-controlled valve,working in series with the main valve to stop the lift during an
unintended car movement from the floor.
DLV valve prevent only the downward unintended car movement.

The purpose of the valve is to work together with the main valve according to the Lift European Standards EN

81.2:1998 + A3:2009 which states that “in case of use of two electro-valves working in series, the self control

implies the separate verification of the opening and closing of each single valve when the car is empty. If a
fault is detected, the subsequent movement of the lift must be avoided”

0.2 INSTALLATION RELATED DOCUMENTS

The documents to use for the installation are those required by the EN81-2:1998 and by the rules in force,
particularly the following:

T

HIS INSTALLATION MANUAL

W

IRING AND HYDRAULIC DIAGRAMS

All the documentation for a correct and safe installation, must be stored by the installation responsible.
Please remember that this documentation is considered part of the plant and must be complete, well stored
and unabridged in every part.
In order to maintain the readability, the documentation shouldn’t be damaged and shouldn’t have missing
parts. Moreover, do not tear or deteriorate sheets during consulting.

0.3 SAFETY PRECAUTION DURING INSTALLATION

Installers and maintenance staff are completely responsible for their own safety during their activities.They
should follow all the safety official rules to prevent accidents to the working staff.
In these instructions,the major points concerning the working safety and prevention,will be marked by the
following symbols:

(EN81-2:1998 16.2 A) 6

AND

7).

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I

NSTALLATION, USE AND MAINTENANCE

VALVE MANUAL

0.4 GENERAL ORDERS

The valves shall be maintained in good working order in accordance with the European Standards.
To this effect, regular maintenance of the installation shall be carried out, to ensure, in particular, the safety of
the installation.
The safety of an installation shall take into account the ability to be maintained without causing injury or damage
to health.
Regular maintenance of the installation shall be carried out to ensure the reliability of the installation.
The access and the associated environment shall be maintained in good working order.
The competence of the maintenance person within the maintenance organization shall be continuously updated.

0.5 LIABILITY AND WARRANTY

These instructions are intended for people with experience in installation, adjustment and maintenance of
hydraulic lifts.
GMV disclaims any liability for damage caused by improper or different use from what described in these
instructions or inexperience or carelessness of those responsible to assemble, adjust or repair hydraulic
components.
GMV's warranty is voided if you install any components or parts not original, if you make unauthorized
changes or modifications or made by unauthorized or unqualified personnel.

Unless otherwise indicated, the following situations are forbidden for safety reasons:

- Any product modification;
The installation of the product for purposes other than those described;
Damage to the joints;
Carrying out maintenance or inspections improper or inadequate;
The use of improper accessories and not original spare parts or materials from GMV.

NOTES

To install or replace system components,we should pay attention to the following measures:

Indicates information which contents must be seriously taken in consideration.

WARNING

Indicates that the described operation may cause, damages to the system or physical damages if
performed without complying with the safety standards.

- Make the car lift rest on the buffers

- make sure the lift shouln’t be unintentionally powered,locking the main switch

- bring to zero the pressure before opening the hydraulic circuit,removing cups,unscrewing fittings

- In case of welding,be care the slags do not get in touch with the fluid,the jask and the gaskets

- Remove the fluid in excess,the leakages,keep clean the system to find out and consequently remove the

leakages

WARNING

Before starting all kind of installation operation:
ALWAYS verify that all the safety devices, mechanical or electrical, are active and working properly

1 FEATURES AND REQUIREMENTS

1.1 DLV A3 VALVE

The DLV A3 is a pilot-operated non-return valve that must be mounted

between the cylinder and the 3010 control valve or any other control valve
for lifts,traditional or electronic.

The valve should be installed as close as possible to the main hydraulic block

but in special cases can be installed also close to the cylinder without
compromising its function.

During the upward phase it works as a normal non-return valve . So the

pressure of the oil sent from the pump can control the opening degree.

In down direction however, when energized, the valve allows the passage of

oil from the cylinder to the main block and then into the tank.When de­energized, the solenoid valve immediately closes and stops the car.