METERING VALVE DAV 600

Installation and maintenance guide

DAV TECH SRLVia Ravizza, 30 - 36075 Montecchio Maggiore (VI) - ITALY

Tel. 0039 0444 574510 - Fax 0039 0444 574324

davtech@davtech.it - www.davtech.it

Index

1 INTRODUCTION pag. 31.1 The manual1.2 Warranty1.3 Goods receiving

2 TECHNICAL DESCRIPTION pag. 32.1 Valve operation2.2 Technical specifications2.3 Connection diagram

3 INSTALLATION pag. 43.1 Mounting in the machine3.2 Drive the valve3.3 Fluid connection

4 ADJUSTMENTS OF THE DISPENSING VALVE pag. 54.1 Adjustment of the piston stroke

5 TROUBLESHOOTING pag. 55.1 Problems and solutions

6 ESPLOSO E DIMENSIONI pag. 66.1 Breakdown6.2 Components6.3 Overall dimensions

Installation and maintenance guide

METERING VALVE DAV 600

pag. 3

1 INTRODUCTION

1.1 The manualThe user guide is the document that accompanies the valve from the time of its construction and throughout the period of use, it is therefore an integral part of the valve. It requires reading the manual before taking any action involving the valve. The manual must be readily available for use by staff and maintenance of the valve. The user and the attendant use are required to know the contents of this manual.

Reproduction of any part of this manual, in any form, without the express written permission of DAV Tech. The text and illustrations in this manual are not binding, the DAV tech reserves the right, at any time and without notice, the right to make any changes to improve the product or for reasons of character manufacturing or commercial.

1.2 WarrantyThe warranty is valid for a period of 12 months from the date of commissioning and no later than 15 months from the date delivery. The interventions carried out during the warranty period does not extend in any way the validity period of the guarantee. The seller is not liable for defects caused by normal wear of parts which by their nature are subject to wear.

1.3 Goods receivingThe original configuration of the valve must never be changed.Upon receipt of the goods, check that:• The packaging is intact • The exact correspondence of the material ordered.

2 TECHNICAL DESCRIPTION

2.1 Valve operationThe pneumatic piston of the metering valve must be controlled with an external 5/2 solenoid valve. The movement of the piston leads to the deposition of a constant and adjustable quantity of grease. The outlet grease pressure depends on the grease supply pressure. The pneumatic drive is designed to remain separate from the chamber which is filled with grease.The valve has a sensor port on which to mount a sensor to monitor the movement of the dosing chamber; this function increases control over the cycle by introducing greater security. The sensor produces an electrical impulse at the beginning of the dosing cycle, ie when the fat has been dosed. To guarantee the functioning of the sensor, the quantity of product to be dispensed must be at least 15% greater than the minimum quantity. In case of problems please do not hesitate to contact.

2.2 Technical specification

Model DAV 600Operation mode Double Acting Weight 650 gFluid pressure inlet Min 10 bar - Max 150 barQuantity dispensable 0,1 cm³ - 3,0 cm³Actuating air pressure 5 - 7 barInlet air 1/8 gasInlet fluid thread 1/8 gasOutlet fluid 1/8 gasSpeed Up to 40 cycles/min Adjusting the amount dosed Mechanic stopper with sensor holder Used materials Stainless steel, anodized aluminumFluids to be dispensed Greases and lubricants and pasty products

3 INSTALLATION

3.1 Mounting the valve on the machineThe valves can be mounted using volumetric ie threaded holes on his body. Download 3D models of the valve from our web-site to design brackets, fasteners, and check the dimensions.

3.2 Drive the valveThe valve DAV 600 operate double acting by a solenoid valve 5/2 external.

3.3 Connection of the fluidThe valve must be connected to a pneumatic pump, by means of a flexible hose, which must be connected to the fitting located in the lower part of the valve.To ensure the best operation of the dispenser make sure that the operating pressure is about 6 bar.Inlet fluid pressure must not exceed 120 bar. To make sure of this consider the compression ratio of the feed pump.The use of a pressure stabilizer can be advantageous to obtain a more constant dosage pressure, but its use is not fundamental.

POMPE PER ALIMENTAZIONE GRASSO

Le pompe DAV Tech sono ideali per alimentare in pressione il grasso contenuto in barattoli o fusti fino alla valvola DAV 600. Sono disponibili pompe per barattoli da 0,5 fino a 5 kg e per fustini da 5 a 200 kg.

UGELLI PER VALVOLA DAV 600

La valvola DAV 600 ha il corpo filettato 1/8 gas femmina in uscita. È quindi molto semplice avvitarci qualunque tipo di ugello.E’ inoltre possibile la progettazione e costruzione di ugelli speciali (multi punto, radiali, etc) per venire incontro alle esigenze della clientela.

CONTROLLO VALVOLA DAV 600

La valvola DAV 600 va controllata tramite elettrovalvola 5/2, una valvola pneumatica 5/2 o altro. Non è necessario che la temporizzazione sia accurata, ma è importante che il tempo impostato nelle 2 fasi di funzionamento permetta alla valvola di ricaricarsi e di dispensare il lubrificante.

Schema di Collegamento

SEGNALE AVVENUTADOSATURA(OPZIONALE)

PLC

ELETTROVALVOLA 5/2

ARIA5-7 bar

FLUIDO(PRESSIONE 10-150 bar)

POMPAPNEUMATICA

Ci riserviamo di modificare in qualsiasi momento, senza preavviso, le caratteristiche tecniche, le dimensioni ed i pesi indicati nel presente catalogo. Le illustrazioni non sono impegnative.

2.3 Connection diagram

SOLENOID VALVE

PNEUMATIC PUMP

FLUID(PRESSURE 10-150 bar)

AIR5-7 bar SIGNAL

ACTIVATES DISPENSE(OPTIONAL)

Installation and maintenance guide

METERING VALVE DAV 600

pag. 5

4 ADJUSTMENTS OF THE DISPENSING VALVE

4.1 Adjustment of the piston strokeTo adjust the stroke, act on the mechanical stop located on the dosing chamber.Turn clockwise to decrease the chamber volume and consequently the amount of adhesive. Turning clockwise and coming to the end of the stroke the dosing valve will be completely closed, so it will not dispense grease constantly. Turn counterclockwise to increase the chamber volume and thus the amount of fat deposited.

PROBLEM POSSIBLE CAUSE SOLUTION

The valve is operated but no fluid comes out

Missing produced in the circuit Check the feed pump

Losses Check the valve

The sensor signal is always on on

Broken Sensor Change sensorThe arrest was too tight Check the piston stroke

No signal from the sensor

Broken cable Change the cableBroken Sensor Change the sensorUnscrewed cable Screw the cable connectionSensor port unscrewed Tighten the sensor holder

Air bubbles in the circuit Air in the circuitUnscrew the product feeding tube, drain a part of the product, reassemble it on the valve and perform some cycles

The valve loses fluid at rest

Damaged seals or pinsReview the valve by replacing the damaged parts

5 TROUBLESHOOTING

5.1 Problems and solutions

The search for possible malfunctions must only be performed by qualified personnel in compliance with the relevant safety regulations.

6 BREAKDOWN DAV 600

Installation and maintenance guide

METERING VALVE DAV 600

pag. 7

POS CODE Q.TY DESCRIPTION

1 VL1001 4 Screw

2 VL5001 1 Upper body

3 VL6005 1 Piston

4 VL2001 1 O-ring

5 VL5002 1 Intermediate body

6 VL2002 1 O-ring

7 VL2003 3 O-ring

8 VL2004 5 O-ring

9 VL6001 1 Guide pin

10 VL3001 4 Quadrig

11 VL4001 4 Contoured gasket

12 VL6002 1 Upper compass

13 VL6003 1 Intermediate compass14 VL7001 3 Cup spring

15 VL6004 1 Lower compass16 VL1002 4 Screw

17 VL5004 1 Body upper chamber

18 VL2005 1 O-ring

19 VL6006 1 Chamber piston

20 VL1003 4 Screw

21 VL5005 1 Body

22 VL2006 1 O-ring

23 VL5006 1 Lower chamber body

24 VL5003 1 Lower room

25 VL1004 4 Screw

VL9100 Valve gasket kit (*)

VL9200 Chamber gasket kit (+)

VL9000 Complete gasket kit

6.2 Components

6.3 Overall dimensions DAV 600

We reserve the right to modify at any time, without notice, the specifications, dimensions and weights in this manual. The illustrations are not binding.

DAV TECH SRL Via Ravizza, 30 - 36075 Montecchio Maggiore (VI) - ITALY - Tel. 0039 0444 574510 - Fax 0039 0444 574324davtech@davtech.it - www.davtech.it

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1/8 “G holes for washing

screw fixing holes

adjusting screw

1/8“G piloting air inlet

1/8“G piloting air inlet

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