SK M Series User manual

Pneumatic presses series M
Operation and maintenance manual
ΑΦΟΙ ΓΑΒΡΙΗΛΙΔΗ Α.Ε.Β.Ε.
Σταδίου 101, Τ.Κ. 59100 Βέροια
Τηλ.23310 20262 Fax [phone]
http://www.agroenos.com

IMPORTANT !
Before using the press for the rst time, you should check the functioning of the press. The control procedure is
described in the accompanying short instructions: Pneumatic press function control – before the rst use.
IMPORTANT !
Inspect your shipment immediately. Check the machine and all parts received and inspect them for potential
damage that may have occurred during shipping. If shipping damage is found, note it on the packing list and report
the damage to the carrier or contact the sales representetive of the manufacturer SK Group Škrlj d.o.o.
The accompanying documentation of the press includes the takeover checklist, where the components that need
to be checked are listed. Please, ll out the takeover checklist completely and precisely. Check all the components of
the press, as well as all equipment and accessories of the press. If you note some discrepancies or imperfections, we
ask you to indicate them in the checklist, and if necessary, add some additional documentation (photos, reclamation
record).
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Address:
Škrlj d.o.o.
Dunajska cesta 196 · SI-1000 Ljubljana · Slovenia
Production and administration:
Škrlj d.o.o.
Batuje 90 · SI-5262 Črniče · Slovenia
tel.: [phone]
fax: [phone]
e-mail: [email protected]
www.sk-group.biz
Document code: NAVU_PSM_2013-05(EN)
This instructions are property of the company ŠKRLJ d.o.o. The company reserves the right to make technical and other changes on the products and the
accompanying instructions without prior notice.
Please read and understand this manual prior to installing, operating or maintaining the machine.
ΑΦΟΙ ΓΑΒΡΙΗΛΙΔΗ Α.Ε.Β.Ε.
Σταδίου 101, Τ.Κ. 59100 Βέροια
Τηλ.23310 20262 Fax [phone]
http://www.agroenos.com

Pneumatic presses series M
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TABLE OF CONTENTS
1 INTRODUCTION.............................................................................................................................................................................................5
2 INTENDED USE OF PNEUMATIC PRESS...................................................................................................................................................5
3 GUARANTEE....................................................................................................................................................................................................5
4 Health and safety .........................................................................................................................................................................................5
4.1 Meaning of the symbols............................................................................................................................................................................. 5
4.2 General safety precautions.......................................................................................................................................................................6
4.3 Safety devices................................................................................................................................................................................................7
4.3.1 Emergency STOP button.............................................................................................................................................................7
4.3.2 Safety cord .......................................................................................................................................................................................7
4.3.3 Protection against overpressure in the drum....................................................................................................................... 7
4.3.4 Overload relays...............................................................................................................................................................................8
5 PRESS TRANSPORT AND SETTING UP.....................................................................................................................................................8
5.1 Transport of the press.................................................................................................................................................................................8
5.2 Mounting and storage of the press........................................................................................................................................................9
6 SWITCHING ON THE PRESS ..................................................................................................................................................................... 10
6.1 Electrical connection.................................................................................................................................................................................10
6.2 Rotating direction of the drum..............................................................................................................................................................11
6.3 Press orientation.........................................................................................................................................................................................11
7 GENERAL DATA............................................................................................................................................................................................12
7.1 Technical data (dimensions and capacity) .........................................................................................................................................12
7.2 Pneumatic press operation.....................................................................................................................................................................13
8 DESCRIPTION OF THE PNEUMATIC PRESS...........................................................................................................................................14
8.1 Components ................................................................................................................................................................................................14
8.2 Built-in components..................................................................................................................................................................................14
8.3 Materials........................................................................................................................................................................................................15
8.4 Sliding hatch ................................................................................................................................................................................................15
8.5 Press drum....................................................................................................................................................................................................16
8.6 Juice collection pan...................................................................................................................................................................................16
8.7 Control box...................................................................................................................................................................................................17
8.8 Optional equipment..................................................................................................................................................................................18
8.8.1 Strainer on the collection pan outlet ....................................................................................................................................18
8.8.2 Level switch in the collection pan..........................................................................................................................................18
8.8.3 Equipment for macaration (only models PST)....................................................................................................................18
8.8.4 Cooling jacket (as an option in PST models) .......................................................................................................................20
9 OPERATING THE PRESS ............................................................................................................................................................................ 22
9.1 Before use .....................................................................................................................................................................................................22
9.2 Filling of the press......................................................................................................................................................................................22
9.2.1 Filling the press through the hatch........................................................................................................................................22
9.2.2 Filling the press through the central filling connector....................................................................................................22
9.3 Selecting the pressing program............................................................................................................................................................24
9.4 Discharging the press ...............................................................................................................................................................................24
10 CLEANING OF THE PNEUMATIC PRESSES........................................................................................................................................... 25
10.1 Cleaning of the drum interior.................................................................................................................................................................25
10.1.1 Presses with no cleaning opening (PS_5, PS_8) ................................................................................................................25
10.1.2 Presses with a cleaning opening (PS_10, _12, _16)...........................................................................................................26

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10.2 Cleaning the drain channels (PST models).........................................................................................................................................26
10.2.1 Removing the drain channels..................................................................................................................................................26
10.2.2 Reassembly of the draining channels ...................................................................................................................................27
10.2.3 Cleaning the drain channels without removing them (optional for PST models)..................................................27
10.3 Cleaning of the external parts of the press........................................................................................................................................28
11 MAINTENANCE ........................................................................................................................................................................................... 28
11.1 Removing humidity from the space between the drum and the membrane........................................................................28
11.2 Checking of the drum rotation chain...................................................................................................................................................28
11.3 Membrane ....................................................................................................................................................................................................29
11.4 Maintenance of the compressor............................................................................................................................................................29
11.5 Maintenace of the safety valve ..............................................................................................................................................................30
11.6 After the end of the vintage season.....................................................................................................................................................30
11.7 Care and maintenence of stainless steel eqipment........................................................................................................................30
11.8 Spare parts....................................................................................................................................................................................................31
12 CORRECTING ERRORS............................................................................................................................................................................... 32
Attachments:
fAE or AV Automatics (Description and operating instructions)
fElectric scheme
fInstructions for use and maintenance of the compressor (provided by the compressor manufacturer)
fDeclaration of conformity
fWarranty declaration

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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 M model PSP_ and PST_ 5/8/10/12/16. As they cover dierent press types, they may describe
functions and features not tted in your particular press.
Read the instructions carefully before:
funloading and installing the press,
fconnecting the press to electricity,
fstart of use,
fmaintenance work.
In the case of any doubt and/or need for additional information, please contact the manufacturer or his
representative.
Identication plate
On one leg of the press there is an identication plate 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 identication plate.
2 INTENDED USE 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.
The manufacturer cannot be held liable for any problems, damages, deformations and 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.
The press manufacturer, Škrlj d.o.o., does not accept any liability for damages caused by failure to observe instructions
in this manual. Furthermore, the manufacturer rejects 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.
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:
DANGER Danger because of the electric current!
WARNING General instruction, recommendation, forbiddance…!

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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. Unqualied 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.
If the pneumatic press is placed in such a way as to prevent a safe access to all its working positions,
additional aids and tools should be used, in order to guarantee a safe access to these working positions.
For a safe access, ladders, staircases and platforms with anti-slip surface and guardrails should be used.
Platform and staircases are manufactured in conformance with the following standards:
fDIN EN ISO 14122-1:2002; Safety of machinery - Permanent means of access to machinery - Part 1: Choice
of a fixed means of access between two levels
fDIN EN ISO 14122-2:2002; Safety of machinery - Permanent means of access to machinery - Part 2: Working
platforms and walkways
fDIN EN ISO 14122-3:2002; Safety of machinery - Permanent means of access to machinery - Part 3:
Staircases, stepladders and guard rails
Disconnect the press from the mains power ALWAYS:
fwhen it is not in use,
fbefore any intervention in the machine,
fduring the cleaning, control and maintenance procedure,
fin case of a damaged electrical cable,
fbefore opening the electric panel,
fin 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:
fthe press is disconnected from network,
fthe main switch of the press is in position OFF,
fthe 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.
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).
The press drum is subject to the requirements laid down in the pressure equipment directive PED 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.

green strip
black indicator
mikroswitch S4
blue button - dropped
blue button - lifted
green strip visible
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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
press immediately stops its operation.
Never use the emergency STOP to
interrupt the grapepress normal
running.
4.3.2 Safety cord
The space between the drum and the press frame is protected by a red safety cord. Any signicant 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.
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.
4.3.3 Protection against overpressure in the drum
For 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 press models maximum pressure is 1.8 bar).
2 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.
safety valve

F1
F2
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3 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 not to exceed the max. pressure allowed
douring the filling of the press.
In case the sound signal is activated, stop the lling
pump immediately.
4.3.4 Overload relays
The press has two overload relays (F1 and F2), which are
located in electric cabinet.
To open and close the electric cabinet, apply the
provided key. The key is xed to the cable on the cabinet
side at delivery.
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/xed.
The presses with a built-in single-phase compressor have a circuit breaker incorporated in the compressor
itself. It is reset by pushing on the switch button.
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.
Do not push on the plastic covers on the front side of the press.
To hoist and transport the press,
always apply the openings/hoisting
eyes provided on the press for this
purpose.
The PS_5 and _8 size presses are tted with four openings on the press
frame (two openings on each side). Attach the hoisting strap or lined steel
rope hooks in these openings.

Wheel - brake activated Wheel - brake released
Pneumatic presses series M
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The PS_10,_12 and _16 size presses have hoisting openings in the hatch brackets. Attach the hoisting strap or lined steel
rope hooks in the openings.
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.
Press type PSP 5 PST 5 PSP 8 PST 8 PSP 10 PST 10 PSP 12 PST 12 PSP 16 PST 16
M (mass) kg 300 350 500 520 610
The strap/rope length shall be such as to carry the press in horizontal position during lifting.
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.
Smaller presses can be unloaded and transported with a forklift of adequate capacity and fork length.
Attach the forks along the press length, to reach from the command cabinet to the frame back side.
5.2 Mounting and storage of the press
Pneumatic press is delivered wrapped in foil. The foil must be removed immediately after delivery. Otherwise, eects 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.
Handles for moving the press
To move the press, use the handles.
Do not push on the plastic covers on
the front and back side of the press.
Wheels
With the help of the wheels the press can be moved to the desired
location. Two of the wheels are tted with a break pedal.
The wheels of the press are exclusively intended for
moving an empty press on a level ground, never on a
street paving or uneven ground.

electric cabinet bracket
electric cabinet fixing screw
key
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6 SWITCHING ON THE PRESS
6.1 Electrical connection
The electrical connection of the press must be carried out by skilled personnel (electrician)!
Electrical connections (including earth lead and protection) should be performed in accordance with
applicable standards.
Electrical diagrams are attached to the manual!
Connect the press to the required source of electrical power (single phase, three phase). Check the mains supply voltage
indicated on the identication plate (on the leg of the press) and on the yellow sticker under the connecting terminals.
Check the mains supply voltage indicated
on the identication plate and on the yellow
sticker under the connecting terminals.
The connection has to be protected with adequate fuses:
Connection voltage 400V 50Hz, three phase 230V 50Hz, single phase (option)
Fuses 3 x 16 A fuse 1 x 16 A fuse
Power cable requirements 5 leads with a cross-section of 2.5 mm
2
3 leads with a cross-section of 2.5 mm
2
If the mains supply voltage is other than 230/400V 50Hz follow the instructions provided by the
manufacturer.
Connecting the cable and the electrical box
Prior to the rst startup, a qualied technician (electrician) shall connect the supply cable to the electric cabinet. Observe
the following procedure:
Remove the plastic press cover; for this purpose, hold it with hands on both sides and
pull upwards.
Loosen the screws on the brackets beneath the electric cabinet to allow the cabinet to be
pulled out.
Open the electric cabinet.
To open and close the electric cabinet, apply the
provided key. At delivery the key is xed to the cable
on the cabinet side.
The identification plate is
positioned on the support
behind the box
The connecting terminals are located
in electrical box.
Sticker with mains
supply voltage