Trelawny SF3EX, Operation And Maintenance Manual

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 employers should consider 
setting up a programme of health surveillance to establish 
a benchmark for each operator and to detect any early 
symptoms of vibration injury.

We are not aware of any PPE that provides protection against 
vibration injury by attenuating vibration emissions.

See ‘Specifications’ section for vibration emission data.

Further advice is available from our Technical Department. 

The compressed air must be free from water and dirt. 

The installation of a filter/regulator/lubricator air 

preparation set (with moisture trap) adjacent to the tool 
is strongly recommended.

Always clear the air hose before connection to the tool. 
Ensure that no moisture (condensation) is present in the air 
hose. Ensure that a minimum 10mm (3/8”) bore antistatic air 
hose is used and that all couplings are secure, leak free and in 
good condition.

Limit the length of air hose to 10M (33ft). Where extra length 
is necessary, for each additional 15M (50ft) of air hose used, 
the pressure drop is approximately 0.16bar (3psi). Correct 
operating pressure is 6.2bar (90psi).

Do not let the operating pressure fall below 5.5bar (80psi.) 
or rise above 6.9bar (100psi) absolute maximum. 
The compressor must be able to supply a minimum of 
12 lps (25cfm) for Triple Scalers, (Free air, not displaced as 
quoted by some compressor manufactures).

In particularly cold weather it is recommended that a 
proprietary anti-freeze lubricating oil is used.

Prior to operating the tool check that all fittings are secure, 

free from leaks and air hoses are in good condition.
That the air pressure is correct for this tool 6.2 bar (90psi.). Put 
a few drops of recommended lubricant into the air inlet of the 
tool. To operate the tool, which is dependant on the type of 

lever fitted, for those fitted with a safety lever, first push thumb 

button forwards and then for both styles of lever, pull the lever 
towards the handle grip to start the tool, then apply the cutter 
heads to the surface being prepared.

To switch off, simply release the throttle lever.

Care must be taken to avoid damaging or tripping over the air 

hose. Maintain contact with the work surface with sufficient 
pressure only to keep the tool from bouncing off. Excessive 

pressure can prevent the tool from working to its full capacity. 

Handled correctly the Scaler will work quickly and efficiently.

VERY IMPORTANT
Only Trelawny Beryllium Copper Heads must be used in 
this tool. DO NOT substitute with any other head.