wiwa HERKULES PFP User manual

Translation of the original operation manual
HERKULES PFP_DBK_en_1402 · rs
Operation manual
HERKULES PFP
Serial-No.
⸏ ⸏ ⸏ ⸏ ⸏ ⸏ ⸏ ⸏

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Contents
Contents
1 Foreword........................................................................................................5
2 Safety .............................................................................................................6
2.1 Explanation of symbols................................................................................6
2.2 Safety notes.................................................................................................8
2.2.1 Operating pressure............................................................................8
2.2.2 Risks caused by the spray jet............................................................8
2.2.3 Risks caused by electrostatic charging..............................................9
2.2.4 Explosion protection ..........................................................................9
2.2.5 Risks due to the rams......................................................................10
2.2.6 Health risks...................................................................................... 11
2.3 Information signs on the unit...................................................................... 11
2.4 Safety features...........................................................................................12
2.4.1 Compressed air shut-off valves .......................................................12
2.4.2 Safety valve .....................................................................................13
2.4.3 Grounding wheels............................................................................13
2.4.4 Grounding cable ..............................................................................13
2.5 Operating and maintenance personnel......................................................14
2.5.1 Unit owner’s duties ..........................................................................14
2.5.2 Personnel qualication.....................................................................14
2.5.3 Authorized operating personnel.......................................................14
2.5.4 Personal Protective Equipment (PPE).............................................14
2.6 Notes on warranty......................................................................................15
2.6.1 Conversions and alterations ............................................................15
2.6.2 Spare parts ......................................................................................15
2.6.3 Accessories......................................................................................15
2.7 Emergency procedures..............................................................................16
2.7.1 Shutting down and depressurising the unit......................................16
2.7.2 Leakages .........................................................................................16
2.7.3 Injuries .............................................................................................16
3 Unit description...........................................................................................17
3.1 Intended use ..............................................................................................17
3.2 Unit conguration.......................................................................................18
4 Transportation, installation and assembly...............................................20
4.1 Transportation............................................................................................20
4.2 Installation location ....................................................................................20
4.3 Assembly....................................................................................................21
4.3.1 Open the ventilation hole.................................................................22
4.3.2 Assembling spray hose and spray gun............................................22

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Contents
4.3.3 Grounding the unit ...........................................................................22
4.3.4 Connecting the compressed air supply............................................23
5 Operation.....................................................................................................24
5.1 Put the unit into operation..........................................................................24
5.1.1 Performing pressure check..............................................................24
5.1.2 Flushing residues of the test medium..............................................25
5.1.3 Adjust the deicing system ................................................................26
5.1.4 Preparing the material to be applied................................................26
5.1.5 Fill the unit with material and bleed it...............................................27
5.2 Coating.......................................................................................................27
5.2.1 Adjusting the spraying pressure.......................................................27
5.2.2 Hints to achieve good coating results..............................................28
5.2.3 Changing material drum ..................................................................28
5.2.4 Intermediate ushing .......................................................................29
5.3 Decommissioning.......................................................................................30
5.3.1 Complete ushing............................................................................30
5.3.2 Disassembling and cleaning the uid pump ....................................30
5.3.3 Assembling the uid pump...............................................................32
5.4 Waste disposal...........................................................................................32
6 Maintenance ................................................................................................33
6.1 Regular inspections ...................................................................................33
6.2 Maintenance plan.......................................................................................34
6.3 Maintenance unit........................................................................................34
6.3.1 Check the lubricant level in the fog oiler..........................................34
6.3.2 Checking and adjusting the fog oiler................................................35
6.3.3 Checking and cleaning the water separator ....................................35
6.4 Fluid pump .................................................................................................35
6.4.1 Checking the release agent level.....................................................35
6.4.2 Checking release agent for material residues .................................36
6.4.3 Replacing the seals on the follow plate ...........................................36
6.5 Recommended operating materials...........................................................36
7 Troubleshooting..........................................................................................37
8 Technical data .............................................................................................38
8.1 Machine card .............................................................................................38
8.2 Type plates.................................................................................................38

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Foreword
1 Foreword
Dear Customer!
We are delighted that you have decided in favour of a HERKULES PFP made by
our company.
This operation manual is intended for the operating and maintenance person-
nel. It contains all the information required to working with this unit.
The owner of the unit must ensure that operators and maintenance person-
nel always have an operation manual at their disposal in a language that
they understand!
Safe and reliable operation of the unit requires further information in addition
to this operation manual. You should have read and understood the guidelines
and accident prevention regulations that apply in your country.
In Germany the following apply:
➤ZH 1/406 “Richtlinien für Flüssigkeitsstrahler” (Guidelines for Liquid Jets),
published by the German “Hauptverband der Gewerblichen Berufsgenos-
senschaften”;
➤BGR 500, Chapter 2.29 “Application of Coating Materials”;
➤BGR 500, chapter 2.36 “Working with Fluid Spraying Equipment” published
by the employers liability insurance association for the gas, remote heating
and water management sectors.
We strongly recommend adding all relevant guidelines and accident prevention
instructions to this operation manual.
Moreover the manufacturer’s instructions and guidelines for coating or feeder
materials must be respected at all times.
However, if you have any questions, please do not hesitate to contact us.
Best wishes for good results with your HERKULES PFP from
WIWA Wilhelm Wagner GmbH & Co. KG.
Copyright
© 2014 WIWA
This operation manual remains the copyright of
WIWA Wilhelm Wagner GmbH & Co. KG.
Gewerbestr. 1-3 • 35633 Lahnau • Germany
Tel.: [phone] • Fax.: [phone] • E-mail: [email protected] • Internet: www.wiwa.de
This operation manual is solely intended for personnel involved in preparation, operation and servic-
ing. It is prohibited to pass on this operation manual for reproduction, utilisation or communication of
its contents, unless this has been explicitly permitted. Infringements incur an obligation to pay damage
compensation. All rights reserved in the event of registration of the patented design, industrial design or
registered design.
This operation manual only applies in conjunction with the machine card that was given to you with the
user manual for your unit. Please check that the data on the type plate match those on the machine
card. Please notify us immediately if there are discrepancies, if the user manual has been incorrectly
compiled or if the type plate is missing.

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Safety
2 Safety
This unit has been designed and manufactured under due consideration of
all safety-related aspects. It complies with the current standard of technolo-
gy and the valid accident prevention instructions. The unit left the factory in
perfect condition and guarantees a high level of technical reliability and safety.
Nevertheless, there are certain risks that can arise from incorrect operation or
misuse:
➤to life and limb of the operator or third party,
➤to the unit and other material assets of the owner,
➤to the efcient working capacity of the unit.
You must refrain from any working methods that could affect the safety of
operating personnel and equipment. All the people that are involved in set-up,
commissioning, operation, maintenance, repair and servicing of the unit must
have read and understood the operation manual beforehand, especially the
chapter entitled “Safety”.
Your safety is at stake!
We recommend to the owner of this unit to have this conrmed in writing.
2.1 Explanation of symbols
Safety information warns you of potential risks of accidents and tell you the
measures that are needed to prevent accidents.
In WIWA operation manuals, safety information is specially highlighted and
marked as follows:
DANGER
Indicates danger of accidents; if you ignore the safety notes, there is a high
risk of severe injury resulting up to and including death!
WARNING
Indicates danger of accidents; if you ignore the safety notes, severe injury
can result up to and including death!
CAUTION
Indicates danger of accidents; if you ignore the safety notes, severe injury
can result!
Indicates important information on correct use of the unit. Ignoring it can
result in damage to the unit or in its vicinity.

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Safety
In the safety notes about the risk of accidents, different pictograms are shown
after each hazard source – examples:
General accident risk
Risk of explosion from explosive atmosphere
Risk of explosion from explosive substances
Danger of injury due to electric voltage or electrostatic charging
Risk of crushing by moving components
Risk of burning due to hot surfaces
Mandatory safety instructions concern protective gear to be worn in the rst
instance. They are particularly highlighted and marked as follows:
Wear protective clothing
Highlights the order to wear the prescribed protective clothing to protect
against skin injuries caused by spraying material or gases.
Use eye protection
Indicates the requirement to wear protective goggles to protect against eye
injuries caused by gases, fumes or dust.
Wear ear defenders
Indicates the requirement to wear ear defenders to prevent your hearing
from being damaged by noise.
Use a respiratory protection mask
Highlights the order to use a respiratory protection mask to prevent your
respiratory tract from being damaged by gases, fumes or dusts.
Wear protective gloves
Highlights the order to wear protective gloves with lower arm protection to
protect against burn injuries caused by heated materials.
Wear protective footwear
Highlights the order to wear protective footwear to prevent injuries to the feet
due to objects that may fall, drop or roll around or to hot or caustic liquids.
Indicates references to guidelines, work instructions and operation manuals
that contain important information which you must observe at all times.

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Safety
2.2 Safety notes
Please remember that the unit works at high pressure and may cause
life-threatening injuries if used inappropriately!
Always observe and follow all instructions in this operation manual and in the
separate operation manuals of individual unit components and/or the option-
ally available accessory devices.
2.2.1 Operating pressure
WARNING
Unit components that do not comply with the maximum permissible operat-
ing pressure can burst and cause serious injury.
➤The specied maximum operating pressures must generally be complied
with for all unit components. In case of varying operating pressures, the
lowest value is always the one to be taken as the maximum operating
pressure for the entire unit.
➤Material hoses and hose assemblies must comply with the maximum
operating pressure, including the required safety factor.
➤Material hoses must be leak tight and free of kinks, signs of abrasion or
bulges.
➤Hose connections must be tight.
2.2.2 Risks caused by the spray jet
WARNING
The material is discharged from the spray gun under very high pressure.
Due to its cutting effect the spray jet can cause severe injuries by penetrat-
ing the skin or entering into the eyes.
➤Never point the spray gun at yourself, other persons or animals.
➤Do not hold your ngers or hands in front of the spray gun!
➤Do not reach with your hands into the spray jet.
WARNING
Unintentional material release from the spray gun may cause personal injury
or damage to property.
➤Always secure the spray gun during every work break!
➤Always check that the safety mechanism on the spray gun works before
each use!

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Safety
2.2.3 Risks caused by electrostatic charging
WARNING
The high ow velocities associated with the Airless spraying method may
cause electrostatic charging. Static discharges can cause re and explosion.
➤Make sure that the unit and the object to be coated are earthed correctly!
➤Always use open containers!
➤Never spray solvents or materials containing solvents into cone-top cans
or drums with bunghole!
➤Stand the containers on a grounded surface.
➤When using metal containers watch out for contact between spray gun
and container wall.
➤Only use conductive material hoses. All original material hoses from
WIWA are conductive and perfectly adapted to our equipment.
WARNING
If the unit is contaminated during spraying by coating material, the increasing
coating thickness may cause electrostatic charging. Static discharges can
cause re and explosion.
➤Clean the unit immediately outside the hazardous area from contamina-
tion by coating material.
2.2.4 Explosion protection
WARNING
Units that are designed without explosion protection must not be used in
workshops that come under the explosion protection ordinance.
Explosion-protected units meet the explosion protection requirements of Di-
rective 94/9/EC for the explosion group, unit category and temperature class
specied on the type plate or in the declaration of conformity.
The operator is responsible for determining the zone allocation according to the
Directive of EC 94/9/EC, Appendix II, no. 2.1-2.3 when observing the measures
of the responsible inspecting authority. The operator is responsible for checking
and ensuring that all technical data and markings according to ATEX corre-
spond with the necessary requirements.
Please note that several unit components have their own type plate with sep-
arate marking according to ATEX. In this case the lowest explosion protection
of all attached markings applies for the entire unit. Applications where mal-
functioning of the unit can lead to danger to personnel must be provided with
appropriate safety measures by the operator.
However, if agitators, heaters or other electrically accessories are additionally
mounted, one must check the explosion protection. Plugs for heaters, agitators,
etc. that do not have explosion protection, may only be plugged in outside of
areas that fall under the explosion protection ordinance, even if the accessory
equipment as such is explosion protected.

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Safety
WARNING
Heating up cleaning agents can cause an explosion. This may result in seri-
ous injury to persons and damage to property.
➤Pay attention to the ashpoint and the ignition temperature of the clean-
ing agent.
➤Switch off the material ow heater if you need to perform the following
work: Cleaning, pressure testing, decommissioning, maintenance and
repair.
2.2.5 Risks due to the rams
WARNING
While the rams are lifting, the moving components can crush your ngers,
hands or other parts of the body.
➤Do not reach between the follow plate and the material drum, the tra-
verse and cylinder cover of the pneumatic cylinder or the clamping piece
and the cylinder cover of the pneumatic cylinder.
WARNING
While the rams are lifting, loose clothing can get between the follow plate or
the follow cover and the material drum or catch on other moving components
or be pulled upwards.
➤Wear tight-tting working clothes that are not very tear-resistant, that
have tight-tting sleeves and no protruding parts.
WARNING
While the rams are lifting, the moving components can cause crushing or
impact injuries.
➤While the rams are lifting, nobody must be in the lifting area.
WARNING
Accidental starting of the rams can result in crushing and impact injuries.
➤Each time work is interrupted, set the ram control levers to the “Stop”
position.
WARNING
Objects placed on the rams may fall down during a stroke movement and
cause injuries.
➤Never place any objects on the rams!

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Safety
2.2.6 Health risks
Follow the safety notes and dosing information of the manufacturer and the
generally applicable regulations when handling paints, solvents, oils, greas-
es and other chemical substances.
CAUTION
Depending on the materials being applied solvent vapours may be generat-
ed which could cause damage to health and objects.
➤Always ensure sufcient aeration and ventilation at the workplace.
➤Always observe the processing instructions issued by the material man-
ufacturers.
When cleaning your skin, use only appropriate skin protection, skin cleaning
and skin care products.
In closed or pressurized systems dangerous chemical reactions may occur if
parts made of aluminium or galvanized parts come into contact with 1.1.1 - tri-
chloroethane, methylene chloride or other solvents containing halogenated
hydrocarbons (CFC’s). If you want to process materials containing the afore
mentioned substances, we recommend to consult the material manufacturer to
clarify the usability of such substances.
For these materials, we have available a range of rust- and acid-proof units.
2.3 Information signs on the unit
Information signs attached to the unit, like safety
information (see Fig. 1) refer to possible danger
areas and must be strictly observed.
They must not be removed from the unit.
Damaged and illegible information signs must be
replaced immediately.
Apart from this you should also read and follow
the safety notes in the operation manual.
Fig. 1: Safety Information

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Safety
2.4 Safety features
WARNING
If one of the safety features is missing or not fully functional, the operating
safety of the unit cannot be guaranteed!
➤If you discover any faults in the safety features or other deciencies on
the unit, stop operation of the unit immediately.
➤Only resume operation of the unit after the fault has been completely
eliminated.
Safety features must be checked with the unit depressurized:
➤before initial commissioning,
➤always before starting work,
➤after set-up work,
➤after all cleaning, servicing and repair work.
The unit is equipped with the following safety features:
➤Compressed air shut-off valves,
➤Safety valve,
➤Grounding wheels,
➤Grounding cable.
Check list:
5Function of compressed air shut-off valves correct?
5Lead seal on the safety valves still intact?
5Safety valves externally free of damage?
5Grounding wheel clean and free of damag?
5Grounding cable free of damage?
5Grounding cable connections on unit and conductor in good condition?
2.4.1 Compressed air shut-off valves
The compressed air shut-off valve
on the air maintenance unit (see
Fig. 2) interrupts the air supply for
the unit.
Furthermore, the unit is equipped
with a further compressed air shut-
off valve for interrupting the air
supply to the container ventilation.
The functional principle of all com-
pressed air shut-off valves that are
installed on the unit is identical:
Open
Close
Fig. 2: Compressed air shut-off valve
➤Open  set in the direction of ow
➤Close  set across the direction of ow
After closing the air, the unit is still pressurized. This means that before car-
rying out maintenance and repair work, you must always carry out complete
pressure release!

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Safety
2.4.2 Safety valve
The safety valve is installed in the air motor of
the HERKULES PFP. The safety valve ensures
that the max. permissible air inlet pressure
is not exceeded. If the air inlet pressure
exceeds the xed limiting value, the safety
valve will blow off.
Fig. 3: Safety valve
WARNING
If the maximum permissible air inlet pressure is exceeded, unit components
may burst. This may result in damage to persons and property.
➤Never allow the unit to run with or without defective safety valves!
➤If a safety valve needs to be replaced, you can nd the corresponding
order number on the machine card.
➤With new safety valves, ensure that they have been set to the maximum
permissible air inlet pressure of the unit (see type plate/machine card)
and sealed with a lead seal.
2.4.3 Grounding wheels
The two swivel rollers of the chassis
are electrically conductive.
They contact the unit to the oor in
order to discharge static electricity.
Check the grounding wheels
regularly for dirt and clean them if
necessary.
Fig. 4: Grounding wheels
2.4.4 Grounding cable
In order to prevent to prevent electrostatic charging, the unit must be grounded
with the grounding cable to an electrically conductive object (see chapter 4.3.3
on page 22). If the grounding cable ist defect or lost you must order a new
immediately.

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Safety
2.5 Operating and maintenance personnel
2.5.1 Unit owner’s duties
The unit owner:
➤is responsible for the training of the operating and maintenance staff,
➤must instruct the operating and maintenance staff in correct handling of the
unit as well as in wearing the correct work clothing and personal protective
equipment,
➤must make the user manual available to the operating and maintenance
staff and ensure that it always remains available,
➤must ensure that the operating and maintenance staff have read and un-
derstood the user manual.
Only then may the unit be brought into service.
2.5.2 Personnel qualication
A differentiation is made between two groups of people in dependence on their
qualications:
➤Instructed operators have been veriably instructed by the unit owner in the
activities they are tasked with and the potential risks connected with them
in the case of incorrect behaviour.
➤Trained personnel have been instructed by the unit builder such that they
are capable of carrying out maintenance and repair work on the system
and recognising potential risks on their own initiative and of avoiding these
risks.
2.5.3 Authorized operating personnel
Activity Qualication
Setup and operation Instructed operator
Cleaning Instructed operator
Servicing Trained personnel
Repair Trained personnel
Juveniles under the age of 16 are not allowed to operate this unit.
2.5.4 Personal Protective Equipment (PPE)
WARNING
Inside hazardous areas, static charges can result in serious accidents.
➤Wear inside hazardous areas only antistatic protective clothing (overall,
protective gloves and protective footwear).
Wear protective clothing
Always wear the protective clothing prescribed for your work environment
and follow the recommendations in the safety data sheet issued by the mate-
rial manufacturer.

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Safety
Use eye protection
Indicates the requirement to wear protective goggles to protect against eye
injuries caused by material splatter gases, fumes or dust.
Wear ear defenders
Operating personnel should be provided with suitable noise protection equip-
ment. The unit operator is responsible for adhering to the accident preven-
tion regulation “Noise” (BGV B3). For this reason, pay special attention to
the conditions at the installation location – the noise burden, for example, will
increase if the system is installed in or on hollow bodies.
Wear a respiratory protection mask
We strongly recommend that you wear a respiratory protection mask, even
though the paint mist has been minimized in the airless spray painting meth-
od given a correct pressure setting and correct working methods.
Wear protective gloves
When applying heated materials you should wear protective gloves with
lower arm protection, to protect you against burn injuries.
Wear protective footwear
Wear protective footwear to prevent injuries to the feet due to objects that
may fall, drop or roll around and to prevent slipping on a slippery oor.
2.6 Notes on warranty
2.6.1 Conversions and alterations
➤Unauthorized conversions or alterations should not be undertaken on safe-
ty grounds.
➤Protective equipment should not be dismantled, converted or bypassed.
➤The unit must only be operated within the specied limiting values and
parameters.
2.6.2 Spare parts
➤When carrying out maintenance and repair work, you must only use WIWA
original spare parts.
➤Use of spare parts which have not been manufactured or delivered by
WIWA renders any warranty null and void.
2.6.3 Accessories
➤Using original WIWA accessories guarantees that they are usable in our
units.
➤If you use third-party accessories, they must be suitable for the unit – par-
ticularly with regard to the operating pressure, the electrical connection
data and the connection sizes. WIWA accepts no liability for damage or
injuries resulting from the use of these parts.
➤You must observe the safety regulations of the accessories. These safety
regulations are found in the separate operating instructions for the acces-
sories.

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Safety
2.7 Emergency procedures
2.7.1 Shutting down and depressurising the unit
In an emergency, the unit must be shut down and depressurised immediately.
1. Regulate the compressed air pressure regulators for the pump and the ram
fully back.
2. Close the compressed air shut-off valve on the air maintenance unit.
3. Close and lock the spray gun.
4. Hold the drain hose into a collection container and ensure that it can not slip.
5. Open the drain valve.
2.7.2 Leakages
WARNING
In case of leakages material can escape under very high pressure and
cause serious bodily injuries and material damage.
➤Immediately shut down the unit and depressurize it.
➤Retighten any screw ttings and replace defective parts (only by trained
personnel).
➤Do not try to seal leaks on the connections and high-pressure hoses with
the hand or by wrapping fabric around them.
➤Do not repair material hoses!
➤Check hoses and screw ttings for leaks when recommissioning the unit.
2.7.3 Injuries
In the case of injuries by processing materials or solvents, always have avail-
able the manufacturer’s safety data sheet (address, phone number, material
designation and material number of the supplier or manufacturer) for the
attending physician.

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Unit description
3 Unit description
The HERKULES PFP is a coating unit for insulating layer forming ame retardants.
It was designed to meet special customer requirements (material to be applied,
mixing ratio, transfer quantity, etc.).
The unit is used for coating steel parts in structural engineering, as weil as in
the oil and gas industry.
The technical data for your unit can be found in the attached machine card.
3.1 Intended use
The HERKULES PFP is intended for the application of insulating layer forming
ame retardants in commercial and industrial applications.
Any other use is considered to be unintended. If you intend to use the unit
for other purposes or with other materials and thus not for the purpose for
which it is intended, you must ask WIWA for permission – otherwise the
warranty will be invalidated.
Intended use also includes compliance with the technical documentation and
adherence to the prescribed operating, servicing and maintenance guide-
lines.

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Unit description
3.2 Unit conguration
Fig. 5: Front view of the HERKULES PFP
1
2
3
4
6
5
9
15
10
11
7
13
12
14
8
No. Designation
1 Silencer
2 Air motor
3Overow with ventilation hole
4 Twin post ram
5 Fluid pump
6 Connection for the spray hose
7 Drain ball valve
8 Drain hose
9 Follow plate
10 Release agent ller neck
11 Release agent drain screw
12 Control lever for the ram
13 Pressure gauge for the ram
14 Compressed air shut-off valve for the container ventilation
15 Connection for the container ventilation

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Unit description
Fig. 6: Rear view of the HERKULES PFP
24
25
19
16
17
18
20
22
23
21
17
No. Designation
16 Maintenance unit
17 Ring screws for safe lifting with hoisting devices
18 Air pressure regulator for the ram
19 Air pressure regulator for the pump
20 Deicing system
21 Pressure gauge for the air inlet pressure
22 Compressed air shut-off valve
23 Compressed air connection
24 Container ventilation with ball valve
25 Grounding terminal with grounding cable
The functional principle of all pressure regulators that are
installed on the unit is identical:
➤Turn clockwise to increase the pressure,
➤turn anti-clockwise to reduce the pressure.

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Transportation, installation and assembly
4 Transportation, installation and assembly
The unit left the factory in awless condition and was appropriately packed for
transportation.
Check the unit on receipt for any damage in transit and for completeness.
4.1 Transportation
Please follow these notes when transporting the unit:
➤Ensure sufcient load bearing capacity of lifting gear and lifting tackle when
loading the unit. You will nd the dimensions and weights of the unit on the
machine card.
➤The unit must only be lifted by the lifting and lashing points provided for this
purpose.
➤Caution danger of tipping! Ensure even load distribution to secure the sys-
tem against tipping over.
➤Do not transport any other objects (e.g. material drums) while lifting or
loading the unit.
➤Never stand under suspended loads or inside the loading area.
This poses a life hazard!
➤Secure the load on the transport vehicle against slipping and falling off.
If the unit was already operated, please observe the following:
➤Disconnect the entire system power supply – even for short transportation
distances.
➤Empty the unit before transportation – uid residues may escape during
transportation despite this measure.
➤Remove all loose parts (e.g. tools) from the unit.
➤Assemble the parts or ttings dismantled for transport purposes before start
up and in compliance with the intended use of the system.
4.2 Installation location
The HERKULES PFP can be installed inside and outside spray booths. However,
outdoor installation should be preferred in order to avoid contamination.
WARNING
If the unit is used outside during a thunderstorm, a lightning strike can cause
a life-threatening situation for the operating personnel.
➤Do not operate a unit out of doors during a thunderstorm!
➤The unit owner must ensure that the unit is equipped with suitable light-
ning protection equipment.
Set the unit up horizontally on a foundation that is at, rm and vibration-free.
The unit must not be tipped or on an incline. Ensure that all the operating
elements and safety features are easy to reach.