Trelawny SF11EX User manual

www.trelawny.co.ukwww.trelawny.co.uk
SF11ex deck hammer
operations and maintenance manual

PAGE 2
SF11ex DECK hammer
CONTENTS
Introduction ................................................................................................................................................................ 2
Declaration of Conformity..................................................................................................................................... 3
Foreword ...................................................................................................................................................................... 6
General Information ................................................................................................................................................ 6
Safety ............................................................................................................................................................................. 6
Risk of Hand Arm Vibration .................................................................................................................................. 7
Air Supply ..................................................................................................................................................................... 7
Starting Work ............................................................................................................................................................. 7
Maintenance ............................................................................................................................................................... 8
Assembly ...................................................................................................................................................................... 9
Disposal ........................................................................................................................................................................ 9
Exploded ...................................................................................................................................................................... 10
Parts List ....................................................................................................................................................................... 11
Technical Specication........................................................................................................................................... 12
INTRODUCTION
Your new Trelawny SPT tool will more than satisfy your expectations. It has been manufactured under stringent
Trelawny SPT Quality Standards to meet superior performance criteria. You will nd your new tool easy and safe to
operate, and, with proper care, it will give you many years of dependable service.
WARNING
Carefully read through these original instructions before using your new Trelawny tool. Take special
care to read the warnings. Your Trelawny tool has many features that will make your job faster and
easier. Safety, performance, and dependability have been given top priority in the development of
this tool, making it easy to maintain and operate.
ENVIRONMENTAL PROTECTION
The machine, accessories and packaging should be sorted for environmentally friendly
recycling. The plastic components are labelled for categorised recycling.
DISPOSAL
Waste products should not be disposed of with household waste. Please recycle where
facilities exist. Check with your local authority or retailer for recycling advice.

www.trelawny.co.uk
DECLARATION OF CONFORMITY
Adam Dickinson,
Managing Director
We,
Trelawny SPT Limited of
Trelawny House, 13 Highdown Road, Sydenham Industrial Estate, Leamington Spa, Warwickshire, CV31
1XT, United Kingdom,
Declare that under our sole responsibility for supply/manufacture of the product
Name of product: Deck Hammer
Model: SF11Ex
to which this document relates is in conformity with the provisions of the following Directive(s),
Normative Documents and their relevant Standards:
2006/42/EC MACHINERY DIRECTIVE
EN ISO 11148-4:2010 HAND HELD NON-ELECTRIC
(Non-Rotary Percussive Tools)
EN ISO 4414:2010 General rules and safety requirements
EN ISO 4414 SAFE PNEUMATIC EQUIPMENT OF MACHINERY
Conformity with the following relevant legislation:
2014/34/EU ATEX DIRECTIVE
Based on following harmonised standards:
EN 60079-0:2018
EN ISO 80079-36:2016
EN ISO 80079-37
II 2 G Ex h IIC T4 Gb
II 2 D Ex h IIIC T135°C Db
www.trelawny.co.uk
Email: [e-mail]
Tel: [phone]
Fax: [phone]
Year and place of issue,
2020
Leamington Spa, England
________________________
Registered Oce: Trelawny SPT Ltd, Trelawny House, 13 Highdown Road, Sydenham Industrial Estate, Leamington Spa, Warwickshire, CV31 1XT, United Kingdom
DOCUMENT No. Q:57/8
________________________________________________________________________________________________________

PAGE 4
SF11ex DECK hammer
CZ Prohlášenl o přizpüsobení
My, společnost Trelawny SPT Limited
podajemy daňové přiznáni. že výrobek a dodávka výrobku
název výrobku
Model, výrobni čislo
Rok výroby
Pro které se průkaz týkajici, je přizpůsobeni s zásoby od následujici přikazov a jejich pohotovostni:
98/37/EC Přikaz soustroji
73/23/EC Přikaz nizkého napéti (upotřebitelne jediné do výrobku použiti elektnckej energie)
LT ATITIKTIES DEKLARACIJA’
Mes, Trelawny SPT Limite
Prisiimdami visą atsakomybę deklaruojame, kad tiekiamas / gaminamas produktas
Produkto pavadinimas
Modelis, serijos numeris
Pagaminimo
Kuriam taikoma ši deklaracija, atitinka šių direktyvų, norminių aktų ir su jais susijusių. standartų reikalavimus:
98/37/EC ļtrangos direktyva
73/23/EC Zemos įtampos direktyva (taikoma tik elektriniams įrengimams)
DE Ubereinstimmungserklarung
Wir, Trelawny SPT Limited
erklaren, dass unter unserer alleinigen Verantwortung fur die Lieferung und Herstellung des Produktes
Name des Produktes
Model, Seriennummer
Jahr der Herstellung
auf welches sich dieses Dokument bezieht. stimmt mit den Vorgaben der folgenden Direktive, normativen Dokumente und deren
jeweiligen Masstabe ein:
98/71/EC Maschineriedirektive
73/23/EC Niederspannungsdirektive (nur zutreffend auf Produkte, die Strom benutzen)
MT DIKJARAZZJONI TA KONFORMITA
Aħna, Trelawny SPT Limited
Niddikjaraw li aħna responsabbli kompletament għal provista / manifattura tal-prodott hawn 1msemmi:
lsem ll-Prodott
Mudell, Serial number
Sena Ia 'produzzjoni
Dan id-dokument magħmul għal prodott imsemmi hawn fuq, li huwa skond il-provizjonijiet imsemmija d-dokumenti tal-klassi tax-
xogħol:
98/37/EC Machinery Directive
73/23/EC Low Voltage Directive (tapplika biss għal prodotti li jaħdmu bl-eletrkiu)
DK Erklæring om overensstemmelse
Vi, Trelawny SPT Limited
Erklærer hermed at under vores ene forhandling ansvar for vores forhandling/produktion af produktet
Produkt navn
Model, serie nummer
Produktionsár
For hvilket delle dokument referer, at deler i overensstemmelse med bestemmelser af følgende direktiver, normative dokumenter
og deres relevante standart:
98/37/EC Machinery directive
73/23/EC Low voltage directive
NL EENVORMIGHEIDSVERKLARING
Wij. Trelawny SPT Limited
Verklaren dat wij de volledige verantwoordelijkheid dragen voor het leveren/fabriceren van het volgende product:
Naam van het product
Type, Serienummer
Productiejaar
En verklaren dat het product waarnaar dit document verwijst eenvormig is met de voorzieningen van de volgende Richtlijn(en),
Normatieve Documenten en hun relevante Standaarden:
98/37/CE MACHINERICHTLIJN
73/23/CE LAAGSPANNINGSRICHTLIJN (uitsluitend van toepassing bij producten die elektrische stroom gebruiken)
EE TOOTE VASTAVUSE DEKLARATSIOON
Meie, Trelawny SPT Limited
Deklareerime, et vastutame jägmise varustuse/toote müügi eest
Toote nimetus
Mudel, Seeria number
Aasta toodangu
Antud dokument töendab toote vastavust järgmistele direktiivi(de)le, normatiivaktidele ja nendega samaväärsetele standarditele:
98/37/EC MASINA DIREKTIIVID
73/23/EC MADALPINGE DIREKTIIVID (Kohandatakse vaid toodetele, mis kasutavad elektrivoolu
PL Deklaracja Zgodnosci
My, Firma Trelawny SPT Limited.
oświadczamy w naszej odpowiedzialności, ze produkcja i dostawa urzctdzenia
Nazwa produkta
Model, numer seryjny
Rok produkcji
do którego ten dokument należy, jest zgodne z klauzulami nastąpujacych zarządzen i ich istotnych standartów:
98/37/EC Zarządzenie mechaniczne
73/23/EC Zarządzenie niskiego napięcia elektrycznego (Zastosowanie tylko przy urządzeniach elektrycznoych)
ES Declaración de Conformidad
Nosotros, Trelawny SPT Limited
Declaramos que bajo nuestra completa responsabilidad de Ia fabricación/suministro del producto
Nombre del Producto
Modelo, No de Serie
Año de producción
A quién este documento se refiere, está de acuerdo con lo relacionado en Ia Directriz, Normativa Documentada y sus relevantes
standards:
98/37/EC Directorio de Maquinaria
73/23/EC Directorio de Bajo Voltaje (Aplicable solamente a productos que funcionen con electricidad)
PT DECLARAÇÄO DE CONFORMIDADE CE
A empresa TRELAWNY SPT LIMITED
Declara, sob sua inteira responsabilidade, que o fornecimento/fabrico do seguinte produto:
Designaçáo do produto
Modelo, Nümero de Série
Ano de produçáo
a que esta declaraçáo se refere. está em conformidade com o preceituado nas Directivas e Normas Comunitárias abaixo indicadas:
98/37/EC DIRECTIVA DE MÁQUINAS
73/23/EC DIRECTIVA DE BAIXA VOLTAGEM (Aplicável apenas a produtos que utilzi am energia eléctrica)
FI ILMOITUSVAHVISTUS
Me. Trelawny SPT Limited
Vahvistamme tuotteiden toimittamisesta/valmistamisesta
Tuotenimi
Malli, sarjanumero
Valmisttusvuosi
Tällä todistuksella vahvistamme säädökset seuraviin ohje/ohjesiin, Yleisiin papereihin ja niihin liittyvät vaatimukset:
98/37/EC KONEISTON OHJEET
73/23/EC PIENJÄNNITE OHJEET (tarvitaan ainoastaan tuotteille jotka käyttävät sähkovoimaa)
RU CBИдETEПЬCTBO O COOTBETCTBИИ
Mьι, Trelawny SPT Limited
3aявляем, что несем полную ответственость эа поставκу/производство нижеукаэанной
продуκцим
Hаименоване изделия
Mодель, серийньιй номер
Год вьιлуска
на котоеую вьιдано настящее Cвидетельство, и которая соответствует положениям слдующей(иx) директив(ьι),
нормативньιм доκументам и относящимся к ним стандартам:
98/37/EC ДИРЕКТИВА ПО MEXAHИ3MAM
73/23/EC ДИРЕКТИВА ПО HИ3KOBOЛЬTHOMУ OЪOPУДOBAHИЮ (распространяется только на изделия с
злектропитанием)
FR DÉCLARATION DE CONFORMITÉ
Nous, soussignés Trelawny SPT Limited
déclarons que le produit sous-nommé
Nom du produit
Modèle et Numéro de Serié
Année de production
et pour lequelnous prenons entière responsabilité pour sa fourniture et manufacture, est conforme aux clauses des directives
suivantes documents norminatifs et normes qui s'y appliquent:
98/37/EC DIRECTIVE POUR LA MACHINERIE
73/23/EC DIRECTIVE POUR BAS VOLTAGE (n'est applicable qu'aux produits utilisant l'énergie électrique)
SE FÖRSÄKRAN OM ÖVERENSSTÄMMELSE
VI, TRELAWNY SPT LIMITED
FÖRKLARAR ATT VI MED ENSAMT ANSVAR ANSKAFFAT / TILLVERKAT PRODUKTEN PRODUKTNAMN
MODELL och SERlE NUMMER
Tillverkningsár
TILL VILKEN DETTA DOKUMENT HÄNVISAR ÄR I ÖVERENSSTÄMMELSE MED FÖLJANDE DIREKTIV, NORMATIVA
DOKUMENT OCH DERAS RELEVANTA STANDARDER
98/37/EC MASKINDIREKTIV
73/23/EC LÄGSTRÖMSDIREKTIV (TILLÄMPLIG PÄ ELEKTRISK DRIVNA PRODUKTER)
GR ΔΗΛΩΣΗ ΠΙΣΤΟΤΗΤΑΣ
Η εταιρεια Trelawny Spt Limited
Δηλωνει ότι έχει τη μονδικη ευθυνη ως κατασκευαστρια / προμηθευτρια του παρακατω προιοντος περιγραφη προιοντος
μοντελο, αριθμος σειρας
έτος παραγωγής
και στο οποιο αναφερεται αυτη η δηλωση, ειναι συμβατο με τις προδιαγαφες που οριϚονται στιϚ ακολουθεϚ Koινοτικες
OδηγιεϚ EλεγκτικεϚ ΔιαταξειϚ κι αλλεϚ σχετικες προδιαγραφεϚ
98/37/EC OΔHΓΙΑ ΠΕΡΙ ΜΗΧANHMATΩN
73/23/EC OΔHΓΙΑ ΠΕΡΙ XAMHΛHΣ TAΣHΣ (αφορα μονον προιοντα που λειτουργουν με ηλεκτρικο ρευμα)
SI IZJAVA O SKLADNOSTI
Trelawny SPT Limited
pod polno odgovornostjo izjavljamo, da so spodaj navedeni proizvodi, ki jih dobavljamolproizvajamo:
lme proizvoda
Model. serijska številka
Leto proizvodnje
na katere se ta dokument nanaša. proizvedeni v skladu z določili naslednjih direktiv, normativnih dokumentov in njihovih relevant-
nih standardov:
98/37/EC DIREKTIVA O STROJIH
73/23/EC DIREKTIVA O STROJIH Z NIZKO VOLTAŽO (nanaša se samo na proizvode na električni pogon)
HU MEGFELELŐSÉGI NYILATKOZAT
Mi. A "Trelawny SPT Limited" cég
Felelösségünk tudatában kijelentjük, hogy mint a termék szállitója/gyartója
Termék neve
Tipus, Sorozatszáma
Gyártási év
amelyre jelen dokumentum vonatkozik, megfelel az alábbi lrányelv(ek), lrányadó Dokumentumok elöirásainak, és az azokat
meghatározó szabvanyoknak:
98/37/EC GÉPÉSZETI IRÁNYELVEK
73/23/EC KISFESZÜLTSÉGÜ IRÁNYELVEK (Csak az elektromos meghajtásů gepeknél)
TR UYGUNLUK BEYANI
Trelawny SPT Limited
AÞaöýdaki, üretim ve tedarikinden tek baÞýna sorumlu olduöu ürünün
Ürün ady
Modei/Seri no
Üretim yili
bu belgenin ilgili olduöu apaöýdaki yönetmeliklerin, norm belgelerinin ve ilgili standartlarýnýn koÞullarýna uygun olduöunu beyan
eder:
98/37/EC MAKŶNALAR YÖNETMELŶDŶ
73/23/EC DÜÞÜK GERŶLŶM YÖNETMELŶDŶ (Yalnýýz elektrikle çalyÞan ürünlerde geçerlidir)
IT DICHIARAZIONE Dl CONFORMITA
La Società Trelawny SPT Limited
Dichiara, sotto Ia propria responsabilità, che Ia fornitura / produzione del prodotto
Nome prodotto
Modello, codice
Anno di produzione
a cui si riferisce tale documento è conforme aile seguenti Direttive, ai documenti della Normativa ed ai relativi standard:
98/37/EC DIRETTIVA SULLE APPARECCHIATURE
73/23/EC DIRETTIVA SUL BASSO VOLTAGGIO (applicabile esclusivamente peri prodotti che utilizzano energia elettrica)
DECLARATION OF CONFORMITY

www.trelawny.co.uk
DECLARATION OF CONFORMITY
Appendix 1 - Hazardous Area Certication
The SF11Ex Deck Hammer certied compliant to the ATEX Directive (2014/34/EU) for safe use within a
hazardous area and has been assessed so by Element Materials Technology.
This product conforms to the Standards:
EN 60079-0:2018
EN ISO 80079-36:2016
EN ISO 80079-37
And is attributed with the product certication codes:
II 2 G Ex h IIC T4 Gb
II 2 D Ex h IIIC T135°C Db
With ATEX Certicate Number: EMT19ATEX0021X
Special Conditions of Safe Use
1. Air compressors used in conjunction with the Scaling Hammers shall incorporate means to prevent
the ingress of dust or other foreign material into the air supply i.e a lter on the compressor intake.
2. For air compressors used in conjunction with the Scaling Hammers, only lubricants that are resistant
to carbonisation shall be used.
3. The external painted surfaces of the equipment are not to be exposed to charging mechanisms
stronger than manual rubbing.
4. Air supply hoses used in conjunction with the equipment must be manufactured from anti-static
material with a surface resistance no greater than 10°Ω.
5. Equipment is to be lubricated before as detailed in the Operations & Maintenance Manual.
6. Any lubricating oil used must have an auto ignition temperature of > 185°c.
7. The equipment must not be stored in an explosive acetylene atmosphere (to prevent the formation of
acetylides on the copper heads).
Equipment must only be installed & maintained by suitably qualied and competent personnel in
accordance with the instructions provided and the terms of the applicable product services.

PAGE 6
SF11ex DECK hammer
FOREWORD
GENERAL INFORMation
SAFETY
Thank you for your purchase of the SF11Ex Deck Hammer. This
manual contains the necessary maintenance information for
you to ensure proper operation and care for this machine. It is
essential for you to read through
this manual thoroughly. In the unlikely event that you
experience problems with your SF11Ex Deck Hammer,
please do not hesitate to contact your local Trelawny
dealer or agent. We always welcome feedback and
comments from our valued customers.
Before operating the SF11Ex Deck Hammer, this manual
must be read and understood by the operator, if in any doubt
ask your supervisor before using this equipment. Failure to
follow these instructions could result in damage to the Deck
Hammer and/or personal injury.
Trelawny SPT Ltd disclaims all responsibility for damage to
persons or objects arising as a consequence of incorrect
handling of the tool, failure to inspect the tool prior to starting
work for damage or other faults that may inuence the
operation or safe working of the tool, or failure to follow the
safety regulations listed or applicable to the job site.
The tool is primarily designed for the removal of heavy rust,
paint and scale from ships decks or heavy steel surfaces.
This tool must not be used in a xture..
Operators should be familiar with the data given in the
specication section.
Please keep these instructions in a safe and accessible place.
Do:
- Be aware that this tool is not electrically insulated.
- Be aware that the tool can create dust and ying debris.
- Keep hands and clothing away from moving parts.
- Be aware of others working around you.
- Ensure that this tool is lubricated daily.
- Store this tool in a secure and dry environment.
- Wear Personal Protective Equipment including safety
goggles, footwear, ear defenders and gloves. In some
environments it will be necessary to wear facemasks or
breathing apparatus.
- Use with a Trelawny specied ATEX HEPA Vacuum.
- Always observe safe-working practices at all times.
Do not:
- Allow the tool to run unattended.
- Do not allow the tool to run continuously whilst not in contact
with the surface being prepared.
- Modify this tool in any way, this will invalidate the warranty
and could also lead to serious injury.
- Do not drag this tool by the air hose.
- Do not use petrol (gasoline), thinners or any other high ash
point solvent to clean the tool.
Please note: Unrestrained hoses can whip if they become
detached. Ensure that the work place is well ventilated.
WARNING! Before operating, performing maintenance
or repairing the SF11Ex this manual must be read and
understood. If in any doubt, ask your supervisor before
using this equipment. Failure to follow these instructions
could result in damage to the Deck Hammer and/or
personal injury.
WARNING! Always observe safe-working practices at
all times.

www.trelawny.co.uk
RISK OF HAND-ARM VIBRATION INJURY
air supply
STARTING WORK
These tools may cause Hand-arm Vibration Syndrome injury
if their use is not adequately managed. We advise you to
carry out a risk assessment and to implement measures
such as; limiting exposure time [i.e. actual trigger time, not
total time at work], job rotation, ensuring the tools are used
correctly, ensuring the tools are maintained according to
our recommendations, and ensuring that the operators wear
personal protective equipment [PPE] particularly gloves and
clothing to keep them warm and dry. Employers should
consider setting up a programme of health surveillance to
establish a benchmark for each operator and to detect early
symptoms of vibration injury.
We are not aware of any PPE that provides protection
against vibration injury by attenuating vibration emissions.
See ‘Technical Specications’ section for vibration emission
data.
Further advice is available from our Technical Department.
We strongly advise you to visit the Health & Safety
Executive website http://www.hse.gov.uk/vibration This site
provides excellent advice and information on HAV and it
includes a Hand-arm Vibration Exposure Calculator that is
easy to use to work out the daily vibration exposure for
each of your operators.
The compressed air must be free from water or contamination.
Always clear the air hose before connection to the tool.
Ensure that no moisture (condensation) is present.
Ensure that a minimum 19mm (3/4”) anti-static bore airline is
used and that all couplings are tight and secure. If possible
try to limit the length of airline to 33 ft. (10 metres) (Air
consumption is shown under Technical Specications at the
end of these instructions).
Where extra length airline is necessary, each additional 50 ft.
(15 metres) of airline used, will drop the pressure at the tool by
approximately 3psi.
Correct operating pressure for this tool is 6.2 bar (90psi)
Do not let the operating pressure fall below 5.5bar (80p.s.i.)
or rise above 6.9bar (100 psi) absolute maximum.
The compressor must be able to supply a minimum of 47 lps
(100cfm) In particularly cold weather it is recommended that a
proprietary anti-freeze lubricating oil is used.
Prior to operating the tool check that all ttings are secure,
free from leaks and that air hoses are in good condition.
That all parts of the tool are fully screwed together and
secure, if in any doubt ask your supervisor before using
this equipment.
That a liberal amount of lubricant has been put into the air inlet
of the tool. (See recommended lubricants) Safe use of this tool
requires a solid stance and secure foothold; the operator must
adopt a rm and stable position at all times.
Recommended Lubriants
Oil the tool before use. Put a few drops of one of the following
zinc free air tool lubricants through the air inlet.
SHELL S22 or R10
CATROL Hyspin ZZ32
Always use clean oil from a sealed container and ensure
ignition temperature is above 185degC°.
Remove the lifting pin from the bottom of the handle to
release the handle, ret in to the block-lifting bracket to
prevent its loss. Never run the tool with the handle fastened
to the main body. The most ecient scaling action is to move
the tool back and forth until the desired nish has been
achieved. Never run the tool continuously in the same place
as this will severely mark the surface and may cause cutter
head damage.
To operate the tool simply turn the ball valve so that he
lever is in line with the handle. If the tool is new, optimum
performance will be achieved after 15mins “running in”
of the brush seals (29). Complete a small area noting the
performance; stop the machine, inspect the nish produced.
To switch o, simply return the ball valve lever to 90° to the
handle whilst continuing to move the tool back and forth.
Handled correctly the SF11Ex Deck Hammer will work quickly
and eciently. Gloves and personal protective equipment
must be worn when using this tool. The tool will ride
irregularities of up to 5mm (1/4”). Anything greater will risk
cutterhead damage. Care must be taken to avoid damaging or
tripping over the air hose. Once the task is completed, return
handle to the upright position and insert the handle-locking
pin (11) for transportation.
VERY IMPORTANT
Only Trelawny Beryllium Copper Heads must be used in
this tool. DO NOT substitute with any other head.

PAGE 8
SF11ex DECK hammer
ASSEMBLY
Ensure all parts are clean and that all internal parts have a lm
of air tool oil, unless specied otherwise. Avoid lubricating oil
contaminating the threads of the body, and the screw cap.
These will require securing with a thread-locking adhesive.
Replace any parts that show signs of wear. If the tool has been
fully serviced it is recommended to change anti-vibration
pads (18) and (21).
Taper Fit Head Pistons
Ensure that all traces of oil/grease are removed from the new
cutter head taper and piston taper using a suitable oil free
solvent. Fit the piston into the cylinder as shown in the service
layout. Fit a new brush seal into the cylinder recess. Select a
cutter head and place on to the taper of the piston. Place the
assembly on to a solid at surface, and with the cutter head
uppermost, deliver a sharp blow with a soft faced hammer to
seat the cutter head onto the piston taper. (The use of a hard
faced hammer will damage the cutter head).
Assembly of Scaling Head
Removal all traces of oil from screwed cap and cylinder block
threads. Select a cutter head/piston/cylinder/brush seal
assembly and apply a few drops of air tool oil to the top of the
piston and t into the body, repeat with the other assemblies.
Fit spring (26) into a screwed cap (25) and t spring cap (27)
into screwed cap, as shown in the service layout. Apply a
small bead of Loctite 243 (Threadloc) or its equivalent to the
rst two threads of the spring cap and screw down by hand,
fully tighten the screwed cap using a suitable spanner, to a
torque of 81.5 Nm (60 lb/ ft).
Sub-frame to Scaling Head
Align mounting holes on sub-frame (22) with anti-vibration pad
(21) studs and t as shown in service layout. Fit washer (20)
and locknut (19) to both studs and fasten both nuts down to a
torque of 40lb ft.
Wheel to Sub-frame
Slide wheel (23) onto sub-frame axle, t washer (20) and
insert a new split pin (24) into the hole. Separate legs on split
pin and bend round with pliers or otherwise. Repeat on the
other wheel.
MAINTENANCE
Disconnect the tool from the air supply before carrying out
any of the following operations.
Dismantling
Clean all debris from the exterior of the tool.
Head Removal – Taper Fit Pistons
Lay the machine down on its side. Unscrew and remove
screwed cap (25). Remove spring cap (27) and spring (26).
From the bottom of the unit push on the cutter head and
remove the piston assembly. Repeat for all other cylinders.
Place the head removal washer between the cutter head and
the cylinder, place cylinder assembly on a at solid surface
with the cutter head upper most, insert the removal pin into
the cutter head hole so that it rests on the end of the piston.
Wearing safety glasses, deliver a sharp blow to the head of
the pin with a medium sized hammer and the cutter head will
be released from the piston.
Piston and Cylinder removal
Unscrew and remove screwed cap (25). Remove spring cap
(27) and spring (26) from the bottom of the scaling head push
up and remove the piston (30) cylinder (28) and brush seal
(29) as an assembly. Repeat for all other cylinders.
Wheel removal
Lay tool on side. Close the split pin (24) and remove the pin,
remove washer (20) and slide the wheel (23) from the axle.
Handle Assembly from Sub-Frame
Remove locking pin (11) to free handle. Lay tool down with
hoses uppermost. Unscrew the connector on the hose (7)
from the adaptor nearest to the scaling head. Select two
15/16” A/F spanners to t bolt (16) and nut (15). Unscrew and
remove both nut (15) and washer (17), withdraw bolt (16) and
washer (17).
Sub-Frame from Scaling Head
Repeat the above, then select a 3/4” A/F spanner and unlock
nut (19) unscrew nut and remove both nut and washer (20).
Repeat for other side.
Ball Valve from mounting
Unscrew hose ttings from ball valve (6) unscrew 4 nuts (5)
and remove u-bolts (3) and mounting brackets (4).
Lifting plate from Handle Assembly
Select a 13mm A/F spanner to suit nut (8) and a 6mm A/F
Allen Key to suit cap head screw (9) and unlock screw (9).
Remove washer (8a) and repeat for other screw.
VERY IMPORTANT
Only a competent person, in a suitably equipped
workshop, must carry out maintenance.
VERY IMPORTANT
Disconnect the tool from the air supply before carrying out
any of the following operations.

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machine storage
DISPOSAL
Short period storage: up to 3months.
Clean the outside of the machine and inspect the cutter heads
for wear, replace any worn parts as required. Insert a liberal
quantity of air tool oil through the air inlet and run briey to
ensure that internal components are coated with oil. Cover the
machine to protect it: Store the machine in a dry place.
Long period storage: over 3months
Clean outside of machine, inspect the cutter heads for wear;
replace any worn parts as required. Remove any build up of
material from the cutter head area. Insert a liberal quantity
of air tool oil through the air inlet and run briey to ensure
that internal components are coated with oil. Lubricate the
exposed part of the piston and cylinder. (See recommended
lubricants) Cover the machine to protect it: Store the machine
in a dry place. After a further 3 months have elapsed, insert
oil into the air inlet as previously described. When next used,
continue as per “Starting work section”.
Handle to Sub-frame
Fit washer (17) to bolt (16) and align all holes though chassis
and anti-vibration mountings (18) guide the bolt through until
it appears at the other end. Fit washer (17) to threaded end
of bolt and t nut (15). To ensure that the sub-frame does
not twist or buckle through over tightening of the nyloc nut
(15), tighten so that not more than 3/8” (10mm) of thread it
protruding from the nyloc nut (15). Select a 13mm A/F spanner
to suit (8) and a 6mm A/F Allen key to suit caphead screw (9).
Slacken o both bolts (9) and nuts (8) align the lifting plate (10)
to the lifting block (12) and insert the locking pin (11). Ensure
that the pin hole is central and the locking pin can be removed
and inserted easily, adjust as necessary.
Ball Valve Mounting
Fit one of the two u-bolts (3) around ball valve (6) and through
bracket (4) so that the ball valve is in line with the handle tube.
Guide the u-bolt (3) into holes in the mounting ange so that
the ball valve is in line with the handle tube. Fit two nuts (5)
nger tight to hold the unit in place. Repeat with the second
u-bolt and bracket. Align the ball valve handle with the main
handle (14). Select a 13mm A/F spanner and fasten evenly the
four nuts (5) until the valve is secure.
Lifting Plate
Align holes in the lifting plate with the holes on that of the
lifting plate ange, ensuring that the position of the lifting plate
(10) is central to the main handle (14). Insert the bolt (9) and t a
washer (8a) and nut (8). Fit the handle-locking pin (11).
Select a 13mm A/F spanner to suit (8) and a 6mm A/F Allen
key to suit caphead screw (9). Tighten both nut and bolts (8) &
(9) ensuring that the pin hole is central and the locking pin can
be removed and inserted easily.
Dismantle into component form, segregate according to
material composition and dispose of using waste recycling
processes specied by local regulations.
VERY IMPORTANT
Only Trelawny Beryllium Copper Heads must be used in
this tool. DO NOT substitute with any other head.
Machinery Directive Information
This tool has been designed and produced in accordance with
the following directives:
2006/42/EC Machinery Directive
and applicable harmonised standard: EN ISO 1 1148-4:2012
If your company has any problem with our products or would
like to discuss the possibility of an improvement being made
to them, then please do not hesitate to contact us. Your
comments are both important and appreciated.
The company operates a policy of continuous product
development and renement and therefore reserves the
right to change technical specications and product designs
without giving prior notice.
All rights reserved. Any unauthorised use or copying of
the contents or part thereof is prohibited. This applies to
trademarks, model denominations, part numbers and
drawings.
Use only genuine Trelawny spares. The use of non-Trelawny
spare parts invalidates the warranty and ATEX Certication.

PAGE 10
SF11ex DECK hammer
EXPLODED DIAGRAM

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Item NO. PART NO. DESCRIPTION
2 826.5004 Adaptor 3/4” BSP
3-5 491.2100 U Bolt Assembly (set of 2)
6 828.1000 Ball Valve
7 719.0750 Armoured Hose Assembly with Couplings
8-12 491.3000 Lifting Bracket Assembly
11 490.2100 Locking Pin (set of 2)
13 490.0100 Handle Grip (set of 2)
14 422.0110 Handle including grips
15-17 491.2000 Handle Mounting Assembly
18 490.1000 Rubber Handle Mounting
19-21 491.0100 Rubber Cylinder Block Mtg Assembly (set of 2)
22 440.0130 Sub Frame
20 812.0500 Washer
23 833.1005 Anti Static Wheel
24 832.2000 Split Pin
25 615.5341 Screwed Cap
26 712.5301 Compression spring
27 615.5361 Spring Cap
28 613.5301 Cylinder
29 614.5301 Brush Seal
30 612.5301 Piston (Taper t)
51 606.5303 Beryllium cutter head – (Taper t) –spark resistant
437.0100 Vacuum Shroud assembly
731.0120 Polyurethane seal
446.1540X Service Kit (25,26,27,29,30,31)
parts list

PAGE 12
SF11ex DECK hammer
Trouble Shooting Cause Action
Machine bounces in use Air pressure too high.
Ensure that the air pressure is set at 90psi. (6.3bar).
If the air pressure cannot be controlled, close o the SF11Ex on/o
valve slightly until the machine runs smoothly.
Machine performance slow Worn Cutter Heads Replace Cutter Heads.
Machine drags on deck or oor
Insucient air supply Ensure that the compressor can supply at least 100cfm (free air) at
90psi. The SF11Ex Deck Hammer requires 70cfm
Hose bore too small. Ensure that the hose bore is 3/4” (19mm).
Hose run too long. Each 50 ft. (15 metres) of airline used, will drop the pressure by approx-
imately 3 psi.
Worn Pistons and/or cylinders. Replace piston and cylinders.
If the problem has not been cured by any of the above actions, contact your local dealership or agent for assistance.
Description Metric Imperial
Piston diameter 27mm 1.06”
Piston length 89mm 3.50”
Stroke 26.5mm 1.04”
Blows per minute 2300 x 11
Air pressure - (3/4”BSP Air Inlet) 6.2 bar 90psi
Air consumption 33 lps 70cfm
Length (handle lowered) 1300mm 51.2”
Height (Handle raised) 1230mm 48.4”
Work head dimensions 285mm (11.2”)L x 150mm (5.9”)W x 180mm (7.1”)D
Cutting width 252mm 9.9”
Cutting width to edge 15mm 0.59”
Weight 37.2kg 82lbs
Noise level db(A) LpA 103.1
LwA 113.1
Vibration (AEQ) at the Handle Bar* a=5.8 m/s2 (K= +40% -0%)
technical specication
Noise Levels: Noise level measured in accordance with: EN ISO 15744: 2008
Vibration Levels: Vibration measured in accordance with: EN ISO 28927-9:2012 and EN ISO 20643:2005. (k) Equals the factor of uncertainty, which allows for variations in
measurement and production. Vibration Data gures are tri-axial, which gives the total vibration emission. Because of various factors, the range of vibration from these
tools may vary between -0% +40% (5.8 m/s2 -8.12 m/s2). The vibration is dependent on the task, the operators grip and feed force employed etc.
NOTE: The above vibration levels were obtained from tri-axial measurements to comply with the requirements of “The Control of Vibration at Work Regulations 2005*” and
the revisions to the (8662) now EN ISO 28927-9:2012 and EN ISO 20643:2005 series of standards. These values are at least 1.4 times larger than the values obtained from
single axis measurements. *Based on European Union Council Directive 2002/44/EC (Physical Agents (Vibration) Directive)).

www.trelawny.co.uk
Machinery Directive Information:
This tool has been designed and produced in accordance with the following directives: 2006/42/EC Machinery Directive
and applicable harmonised standard: EN ISO 1 1148-4:2012
EN ISO 11148-4: 2010 Hand Held Non-Electric (Non-Rotary
Percussive Tools)
This tool conforms with the following EC legislation: ATEX DIRECTIVE 2014/34/EU
Based on the following harmonised standards: EN60079-0:2018
EN ISO 80079-36:2016
EN ISO 80079-37
Notied Body: Element Material Technology LTD
Certicate Number: EMT19ATEX0021X
If your company has any problem with our products or would like to discuss the possibility of an improvement being made to them, then please do not hesitate to
contact us. Your comments are both important and appreciated.
Trelawny tools are thoroughly tested under specied conditions in accordance with applicable internationally recognised standards. When a tool is used on site the
conditions may not be the same as those used in our tests.
Trelawny Surface Preparation Technology operates a policy of continuous product development and renement and therefore reserves the right to change technical
specications and product designs without giving prior notice.
© Copyright 2015, Trelawny SPT Limited, CV31 1XT. UK All rights reserved. Any unauthorised use or copying of the contents or part thereof is prohibited. This applies
to trademarks, model denominations, part numbers and drawings. Use only genuine Trelawny spares.
The use of non-Trelawny spare parts will invalidate the ATEX certication and also the warranty.
Trelawny SPT Ltd
13 Highdown Road, Sydenham Industrial Estate, Leamington Spa, Warwickshire, CV31 1XT, United Kingdom
Telephone: [phone] – Fax [phone]
Email: [e-mail]

PAGE 14
SF11ex DECK hammer
notes

www.trelawny.co.uk
notes

PAGE 16
SF11ex DECK hammer
DEALER STAMP:
need to contact us?
Trelawny SPT Limited
Trelawny House, 13 Highdown Road, Sydenham Industrial Estate,
Leamington Spa, Warwickshire, CV31 1XT, United Kingdom
Manual Part Number:
735.3604
Telephone: [phone] Fax: [phone]
Email: [e-mail]
Website: www.trelawny.co.uk