Overspeed Governor ALJO 2129
Maintenance and assembly instructions
APLICACIONES ELECTROMECÁNICAS GERVALL, S.A. Dirección: Eusebi Millán, 5-7 Pol. Ind. Roquetes 08800 Vilanova i la Geltrú,
Barcelona –España Tels. 34-938 930 228 Fax 34-938 935 590 www.gervall.com
5.- Tension Pulley.
The tension pulley in drawing 12.064.0A / 12.064.0M have been estimated to produce a tension on the safety gear in the ascent direction of
at least 300 N. In descent the tension is over 600N. Other tension pulleys can be used, always when the minimum tension is guaranteed on
the axle of the tension pulley. The tension pulley has a contact to detect the loosening of cables, which is activated when the pulley turns on
lengthening the rope.
6.- Electrical assembly.
The current of the remote tripping device could be 24 VDC, 48 VDC o 230 VAC. Maximum consumption of 1,9 A, 1 A o 0,25 A. Maximum
time of activated coil of 10 seconds waiting time for next activation of 30 seconds.
The electrical tripping device (overspeed), safety contact, is composed of 1 contact 1NC (manual reset) and 1NC+1NO (automatic reset).
It is possible to mount an overspeed contact 2NC+1NO (automatic reset or manual). In this case the reference is as the table where the first
letter will be D (2129.D----, upwards and downwards or 2129.BD----, only downwards).
It is possible to mount an overspeed contact 2NC (remote reset) to 24 VAC (4,2 A) or 230 VAC (0,5 A). In this case the reference is as the
table where the first letter will be Z (2129.Z----, upwards and downwards or 2129.BZ----, only downwards).
7.- Maintenance.
All the rotation axes of the overspeed governor and of the return pulley have bearing, which means that they do not require any subsequent
greasing or maintenance. At the same time, greasing of the cable can reduce the adherence of the cable and the channel of the overspeed
governor. This could reduce the strength on the safety gear.
Two things should be kept in mind to avoid incorrect operation of the overspeed governor. First, mobile elements should be kept clean to
avoid possible mixfunction. The installer should ensure of the perfect condition. Second, although the equipment leaves the factory finished
to avoid corrosion, the installer should check the parts, and act where appropriate. The maintenance company will determine the frequency
of inspections, but they should take into account the atmosphere where the equipment is installed.
8.- Evaluation of risks and security.
In the installation of the rope on the pulley groove entrapment may be produced between the rope and the pulley, avoid rotation of the pulley
of the overspeed governor. In normal running of the installation, at the point of entry and exit of the cable in the groove of the pulley there
may be a point of risk and to this aim the overspeed governor has a protection cover available to avoid such an incident.
To avoid electric shocks on connecting the overspeed contact and/or remote tripping coil (for the test of the blocking of the safety gears)
remove the power supply
9.- Responsibilities.
Gervall no se responsabiliza de los problemas derivados del no cumplimiento de los consejos y prescripciones descriptos. Así mismo, no se
hace responsable de la manipulación de los precintos.
Gervall will not be held responsible for any problems caused by the non-compliance of advice and guidelines. At the same time, Gervall will
not be responsible for any manipulation of seals.
