2.6 O peration of the screed

Procedure for gas bottle connection:

• Dismount the protective cap (1) from the gas bottle shut-off valve (2).

• Check that the rubber seal of the cap nut (4) of the reducing valve (3) is undamaged. In case of damage, replace the rubber seal of the cap nut (4) of the reducing valve (3).

• When connecting the reducing valve onto the gas bottle, pay attention to the thread direction.

• Connect the gas bottle by screwing on the reducing valve (3) on the gas bottle shut-off valve (2).

• Tighten the cap nut (4) of the reducing valve (3) at the maximum tightening torque value of 3-5 Nm (2.2 – 3.7 lb ft).

Caution! Tighten the cap nut (4) of the reducing valve (3) at the maximum tightening torque value of 3-5 Nm (2.2 – 3.7 lb ft); there is a risk of damage to the rubber seal.

Caution! Risk of damage to the thread when connecting the gas bottle.

Caution! The reducing valve is fitted with a nut which has a left-handed thread.

Before putting the machine into operation, check the tightness of the reducing valve (3).

Caution! Always check the tightness of the cap nut (4) connection after connecting a gas bottle.

Opening the gas supply

Gas is supplied via the gas bottle (9) shut-off valve (2).

Before mounting the gas bottle on the machine always check that the delivered gas bottle has a valid revision according to the valid national regulations.

Keep the safety valve (7) clean and in faultless condition. Abide by the instructions for opening gas supply.

Caution! When the operation is terminated or machine shut down, always close the shut-off valve (2) of the gas bottle (9).

Revise the machine gas equipment regularly, at least one a year.

Caution! Risk of screed damage if gas pressure is set too high.

A too high gas pressure may cause the screed to overheat and as a result to mechanically deform.

Always keep an operating pressure in the range of approx. 0.6 bar to 0.8 bar.

Never exceed the maximum operating pressure of 1 bar.

Gas bottle inspection:

• Check on the pressure gauge (6) that the gas bottle (9) is sufficiently full.

• A pressure on the pressure gauge (6) may not be lower than 1.5 bar.

• If the gas level is too low, replace the gas bottle (9) for a new one with sufficient filling.

Inspection of screed heating system switch-off:

• Check on the main dashboard that the screed heating system is switched off.

- The screed heating switch (13) must be in the lower “OFF” position.

- The screed gas heating indicator lamp (28) is not lit.