SK L Series User manual

Škrlj d.o.o., tel.: ++386 (0)5 36 43 500 – fax: ++386 (0)5 36 43 525 www.sk-group.biz - [email protected]

matina št.: 5559839 – davna št.: 94136408

NAV_PSL_ 2008/07_UK_v4

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PNEUMATIC PRESSES

SERIES

PSP_PST_ 21/29/42/55

OPERATION AND MAINTENANCE MANUAL

NAV_PSL_ 2008/07_UK_v4

TABLE OF CONTENTS:

1 INTRODUCTION ........................................................................................................................... 4

2 PURPOSE OF PNEUMATIC PRESS ............................................................................................ 4

3 GUARANTEE ................................................................................................................................ 4

4 HEALTH AND SAFETY................................................................................................................. 5

4.1 Meaning of the symbols....................................................................................................... 5

4.2 GENERAL SAFETY PRECAUTIONS .................................................................................... 5

4.3 SAFETY DEVICES................................................................................................................. 6

4.3.1 Emergency STOP button................................................................................................. 6

4.3.2 Safety cord ...................................................................................................................... 7

4.3.3 Protection against overpressure in the drum ................................................................... 8

4.3.4 Overload relays ............................................................................................................... 8

5 PRESS TRANSPORT AND SETTING UP..................................................................................... 9

5.1 Transport of the press.......................................................................................................... 9

5.2 Mounting and storage of the press ................................................................................... 10

6 SWITCHING ON THE PRESS..................................................................................................... 11

6.1 Electrical connection.......................................................................................................... 11

6.2 Rotating direction of the drum .......................................................................................... 12

7 GENERAL DATA......................................................................................................................... 13

7.1 Technical data (dimensions and capacity) ....................................................................... 13

7.2 Press orientation ................................................................................................................ 14

7.3 Pneumatic press operation................................................................................................ 15

8 DESCRIPTION OF THE PNEUMATIC PRESS ........................................................................... 16

8.1 Components........................................................................................................................ 16

8.2 Built-in components........................................................................................................... 17

8.3 Materials.............................................................................................................................. 18

8.4 Sliding hatch....................................................................................................................... 18

8.4.1 Double sliding hatch (manual opening/closing).............................................................. 18

8.4.2 Double hatch with pneumatic drive (optional) ................................................................ 20

8.4.3 Hermetic hatch with manual opening/closing (optional for PST).................................... 21

8.4.4 Hermetic hatch with pneumatic drive (optional for PST) ................................................ 22

8.5 Press drum.......................................................................................................................... 23

8.6 Juice collection pan ........................................................................................................... 24

8.6.1 Small pan on guides (optional on PS_21 and PS_29) ................................................... 24

8.6.2 Large pan on wheels (optional on PS_21 and PS_29) .................................................. 25

8.6.3 Pan on guides (PS_42 and PS_55)............................................................................... 25

8.7 Control box ......................................................................................................................... 26

8.8 Optional equipment............................................................................................................ 26

8.8.1 Strainer on the collection pan outlet .............................................................................. 26

8.8.2 Level switch in the collection pan .................................................................................. 27

8.8.3 Equipment for macaration (only models PST) ............................................................... 28

9 OPERATING THE PRESS .......................................................................................................... 29

9.1 Before use........................................................................................................................... 29

9.2 Filling of the press.............................................................................................................. 29

9.2.1 Filling the press through the hatch................................................................................. 29

9.2.2 Filling the press through the central filling connector ..................................................... 30

9.3 Selecting the pressing program ........................................................................................ 32

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9.4 Discharging the press ........................................................................................................ 33

10 CLEANING OF THE PRESS.................................................................................................... 34

10.1 Cleaning of the drum interior............................................................................................. 34

10.2 Cleaning the drain channels (PST models) ...................................................................... 35

10.2.1 The draining channel dismounting procedure:............................................................... 35

10.2.2 Reassembly of the draining channels............................................................................ 36

10.3 Cleaning the drain channels without removing them (optional for PST models).......... 37

10.3.1 Channel cleaning hose (length: 3 m). ............................................................................ 37

10.4 Cleaning of the external parts of the press ...................................................................... 37

11 MAINTENANCE....................................................................................................................... 38

11.1 Removing humidity from the space between the drum and the membrane .................. 38

11.2 Checking of the drum rotation chain ................................................................................ 38

11.3 Membrane ........................................................................................................................... 39

11.4 Maintenance of the compressor........................................................................................ 40

11.5 Maintenace of the relief valve............................................................................................ 40

11.6 After the end of the vintage season .................................................................................. 40

11.7 Care and maintenence of stainless steel eqipment ......................................................... 41

11.8 Spare parts.......................................................................................................................... 43

12 CORRECTING ERRORS......................................................................................................... 43

Attachments:

- AV Automatics (Description and operating instructions)

- Electric scheme

- Instructions for use and maintenance of the compressor (provided by the compressor

manufacturer)

- Declaration of conformity

- Warranty declaration

NAV_PSL_ 2008/07_UK_v4

1 INTRODUCTION

We thank you for your trust, which you demonstrated by purchasing our pneumatic press.

In order for it to be used successfully and for a long period we ask you to follow the instructions and

warnings for a safe and proper use.

The instructions are intended for the operator and they should always be kept at hand. They describe

correct and safe use of the pneumatic presses series L model PSP_ and model PST_

21/29/42/55. As they cover different press types, they may describe functions and features not fitted in

your particular press.

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Read the instructions carefully before:

- Unloading and installing the press

- Connecting the press to electricity

- Start of use

- Maintenance work

In the case of any doubt and/or need for additional information, please contact the

manufacturer or his representative.

IDENTIFICATION STICKER

On one leg of the press there is an identification sticker with

basic information on the press characteristics (serial number,

drum capacity, type of the press, technical data, year of

production …).

In case you need any additional information, spare parts or

service, always provide the data from the identification

sticker.

2 PURPOSE OF PNEUMATIC PRESS

Pneumatic presses are only designed for pressing grapes and lees. Use the press only for the

purposes intended and approved by the manufacturer.

In the case you intend to apply the press for any other purpose, consult the manufacturer prior to such

application. We cannot be held liable for any problems, damages, deformations, risks … that may

arise due to the application of the press for any purposes not explicitly approved by the manufacturer.

3 GUARANTEE

See the guarantee declaration.

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The press manufacturer, Škrlj d.o.o., does not accept any liability for damages caused by

failure to observe instructions in this manual. Furthermore, we reject any liability for

damages caused by improper application of the machine and its accessories.

In the case of use for purposes not intended, failure to observe the instructions in this

manual or any tampering with the machine by non-authorised persons, the manufacturer's

guarantee becomes void.

NAV_PSL_ 2008/07_UK_v4

4 HEALTH AND SAFETY

4.1 Meaning of the symbols

In the instructions following symbols are used to warn the user against danger or special attention:

Symbol Designation Meaning

DANGER Danger because of the electric current!

DANGER Danger because of the moving parts of the machine!

WARNING General instruction, recommendation, forbiddance…!

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IMPORTANT INFORMATION Information that demands special attention!

4.2 GENERAL SAFETY PRECAUTIONS

Due to its moving parts and to the pressure in the drum, the pneumatic press may be a threat to its

environment. Therefore, strictly observe safety precautions when operating the press. Unqualified and

unauthorized person is not allowed to use the press.

In a case of any unauthorised tampering with the machine, the manufacturer's guarantee becomes

void; furthermore, any unprofessional repairs may result in danger for the machine operator.

Disconnect the press from the mains power ALWAYS:

when it is not in use;

before any intervention in the machine

during the cleaning, control and maintenance procedure

in case of a damaged electrical cable

before opening the electric panel;

in case of any danger

In case of any danger stop the press by pressing the emergency STOP button or

with the safety cord.

Before any intervention in the machine make sure that:

the press is disconnected from network

the main switch of the press is in position OFF

The drum is not pressurised.

Opening of the hatch during the press operation is explicitly forbidden.

The hatch may only be opened for the filling the drum, for the discharging, for cleaning

purposes and for maintenance works in the press drum.

Before opening the hatch manually, disconnect the press and turn the main switch OFF.

Before entering the drum, secure the door against unintentional closing.

Do not reach in the space between the drum and the press frame. Danger of

squeezing!

This space is secured with a safety cord. The tension and position of the safety cord must

be checked before every use of the press.

NAV_PSL_ 2008/07_UK_v4

Once a year, the screws that connect the membrane to the drum frame must be tightened.

Before that, disconnect the press from the mains supply. The hatch should be open and

protected against inadvertent closing.

When filling with the pump, be careful not to exceed the limit pressure value in the drum.

You must stop the pump as soon as you hear the acoustic signal, in order to reduce the

pressure. Disregarding this instruction can lead to serious damage of the drum.

When filling the press, the recommended filling capacity should be observed (see chapter

9.2 Filling of the press).

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The press drum is subject to the requirements laid down in the pressure equipment

directive (Official gazette of Slovenia, 15/2002; directive ES 97/23/EC). After setting up the

press, the producer has performed acceptance examination with the initial pressure test.

The user has to consider all the directives, that are in force in the country where the press

is operating. The user must also make sure that all the periodical tests according to this

directive are done.

4.3 SAFETY DEVICES

The press is equipped with safety devices which ensure safe work and undisturbed operation of the

press.

4.3.1 Emergency STOP button

When you push the emergency STOP button (the red button on the control

panel), the press immediately stops its operation.

Never use the emergency STOP to interrupt the grapepress normal running.

emergency

STOP button

NAV_PSL_ 2008/07_UK_v4

4.3.2 Safety cord

The space between the drum and the press frame is protected by a red safety cord. Any significant

vibration or pulling on the cord triggers a micro switch, which in turn immediately stops the press.

Always check the safety cord tension and position prior to operating the press. If the safety cord is not

installed or its tension is incorrect, the press will not function.

The safety cord runs along the internal edge of

the press frame. It is connected to the S4 micro

switch. The cord tension is proper when the end

of the black indicator is approximately in the

middle of the green strip, and the blue button

pulled out to show the green strip beneath it.

The cord tension is set by means of the screw at

the cord end. Any pulling on the cord triggers

automatic immediate stopping of the press.

press is displayed.

The blue button drops.

The press switches to a standstill.

Prior to resuming the press operation, determine

and remedy the trouble that caused the press to

stop.

To resume the press operation, lift the blue button

on the micro switch so as to show the green strip

underneath it.

Start the press by means of the green button on

the command panel and resume the cancelled

pressing programme.

mikroswitch S4

blue button -

dropped

green strip

black indicator

blue button -

lifted

green strip visible

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4.3.3 Protection against overpressure in the drum

Following safety systems are used:

1 Maximum pressure that can be achieved with the compressor is limited to 1.5 bar

(by some executions maximum pressure is 1.8 bar).

In a case the pressure is exceeded (e.g. due to a valve

fault), the vacuum pump valve and the safety valve

automatically open at 2.0 bar, to release air from the drum

and to decrease the pressure to the allowed level.

Presses with axial filling can also be equipped with a

sound alarm. The alarm is triggered if the pressure is

exceeded or the press is overfilled.

Make sure that you don't exceed the max. pressure

allowed douring the filling of the press.

In case the sound signal is activated, stop the filling pump

immediately.

4.3.4 Overload relays

The press has two overload relays (F1 and F2),

which are located in electric cabinet.

Use the supplied key to open and close the electric

box (upon delivery it is fixed on the cable below the

box).

The overload relay is activated in case of overloading, overheating or any

other trouble with the electromotor or compressor.

The overload relay F1 protects the drum rotation electromotor.

the overload relay F2 protects the compressor electromotor

By pressing the black button, the overload relay is reset.

ATTENTION:

Before resetting the overload relay, make sure that the problem that

caused the activation of the relay has been corrected/fixed.

Overload relays

safety valve

Sound

alarm

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5 PRESS TRANSPORT AND SETTING UP

5.1 Transport of the press

Transportation, unloading and lifting may only be done by skilled personnel.

The manufacturer shall not be kept liable for any personal injuries or material damages resulting

from disregarding safety regulations applicable to the transportation, unloading, lifting…

During lifting and manipulating the press, no person shall move or stay below the hoisted

load or within the operating range of the crane.

To hoist and transport the press, always apply the openings/hoisting eyes provided on the press for

this purpose.

The PSP/PST_21 and 29 size presses are fitted with four

hoisting openings in the hatch brackets (one opening on each

bracket). Attach the hoisting strap or lined steel rope hooks in

these openings.

The larger models are fitted with special lifting lugs located on

both ends of the drum.

Attach the hoisting strap or lined steel rope hooks in these

openings.

When you place the press or before

activating the press obligatory dismount

both lifting lugs.

Unscrew both screws fixing the lug to the

drum and remove the lug.

Store them in a safe place, as you may

need them later to transport the press again.

To unload and transport the press, apply appropriate lifting equipment (forklift, lift) and hoisting straps

or lined steel ropes. Make sure the strap/rope load bearing capacity is adequate for the press weight.

Designation

PSP 21

PST 21

PSP 29

PST 29

PSP 42

PST 42

PSP 55

PST 55

M (mass)

810 1120 1800 2200

The strap/rope length shall be such as to carry the press in horizontal position during lifting. The

distance between the drum and the hook of the lift must be at least 1.5 m. Otherwise you must use

apropriate bracket to prevent the hatch brackets bending.

Attach the strap/rope hooks into the hoisting openings on the press. Hang both slings of the hoisting

straps/ropes on the lifting device hook and carefully lift the press. Make sure the load is balanced and

then lower the press, slowly and avoiding unnecessary oscillations, onto the intended position.

hoisting opening in t

he hatch

bracket

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5.2 Mounting and storage of the press

Pneumatic press is delivered wrapped in foil. The foil must be removed immediately after delivery.

Otherwise, effects of weather factors (exposure to strong sun radiation etc.) may hinder complete and

neat removal of the foil.

Place the press into a dry and vented space on a level floor. Protect it from dust and

direct sunlight. Excessive temperature can harm the controller and cause controller

malfunction.

Wheels:

PS_21 and PS_29 series presses have factory

installed wheels (two steerable wheels with a brake and

two fixed wheels).

For PS_42 and PS_55 series presses, these wheels

are optional.

By using the wheels, move the press to the foreseen

position.

Two of the wheels are fitted with a break pedal.

Wheel - brake activated

Wheel - brake released

The wheels of the press are exclusively

intended for moving an the press on a level

ground, never on a street paving or uneven

ground.

This manual suits for next models

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