STAS STAS M, Instructions For Use Manual

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STAS nv – Flanders Fieldweg 45 – 8790 WAREGEM (BELGIUM) Instructions for use, tipper trailer – Version 3.1
Tel. +32 (56) / 60 01 91 – Fax +32 (56) / 60 01 95 – e-mail : sales@stas.be web – - http://www.stas.be Page 21
The red control button for the spring brake cylinders can be found on the left hand side of the control
unit (see
Fout! Verwijzingsbron niet gevonden. 3.9.b.).
Figure 3.9.b. – Control unit parking brake with control button
Operation of the parking brake can be summarised as follows:
 Pull out the red button to activate the trailer parking brake.
 Push the red button to switch off the trailer parking brake.

After disengaging the parking brake it is possible that one CANNOT
immediately drive away. The pressure in the spring brake cylinder needs
to rise first before the parking brake is released.
 Ensure the parking brake is sufficiently engaged before leaving the trailer
unmanned.
 It is advisable to place a wheel chock in front of or behind the wheels for
additional protection.
 Always park the trailer on a horizontal and stable surface, NEVER on an
incline.
3.1 0. Em erg enc y b ra ke
This function is used when the trailer is not connected to the lorry and it is necessary to move the trailer
using a fork lift truck for instance.
When the red air pressure pipe between the lorry and the trailer is uncoupled, the brake system on the
trailer will automatically go into the braking position so that, in principle, the trailer cannot be moved.
With the aid of the emergency brake, the trailer can still be moved without the lorry.
The control unit for the emergency brake is located on the side of the trailer, together with the raising
and lowering valve and the loading gauge. The black control button for the service brake is located on
the right hand side of the control unit (see Figure 3.10.a.).
Figure 3.10.a. – Control unit emergency brake with control button
Operation of the emergency brake can be summarised as follows:
 Push the black button to activate the emergency brake in order to move the trailer (using a fork lift
truck for instance).
 Pull out the black button to re-activate the service brake for the trailer.
Figure 3.10.b. – Figure – Use of the emergency brake
Use of the emergency brake requires a pressure of more than 4 bar in the
pneumatic circuit.
4. Suspension
4.1 . G ene ra l
Figure 4.1.a. – Air suspension
The trailer is fitted with air suspension as standard. Mechanical suspension is
an option that is not covered in this manual.
The air suspension of the trailer ensures the chassis of the trailer is spring-mounted with regards to the
axles of the trailer and is able to absorb the shocks in this way. The pressure in the air bags is
regulated automatically in such a way that for each load, maximum driving comfort and minor
movement of the superstructure is obtained. This also results in good road holding and little tyre wear.