Manual of experiences and tolerances in rope pump production
I. PRESENTATION
This document, which includes experiences and tolerances in the rope pump production
process, is part of the Rope Pump Technology Transfer program and is a supplement to
the production photo-manual as well as the technical drawing manuals.
At first glance, production appears to be relatively simple. This document reflects
the various steps in the production and also includes positive as well as negative
experiences encountered in the countryside. It includes the tolerances for materials,
which must be met in order to ensure the proper functioning of the pump and also
indicates alternatives, which may be used in production without posing any risks.
This document has been elaborated for future producers with the aim of indicating the
limits in quality, of preventing errors and also the duplication of errors already
committed by others.
The document provides a characterization of the design including all of the parts of
the rope pump, such as the rope, the guide, the pistons, the structure, the use of
devices, etc. Although this is not a production manual, together with the technical
drawings and the photos it gives the guidelines that will prevent unnecessary errors.
Reference to these two documents will be made in the text.
In March of 1996, the governments of Nicaragua and Switzerland, through COSUDE, signed
a bilateral aid agreement, which would continue activities of the INAA-COSUDE program
for a new three-year phase (1996-1998). The rope pump Technology Transfer was specified
within the framework of the INAA-COSUDE agreement in order to promote production both
regionally and internationally. This activity is being carried out by the Technology
Transfer Division of Bombas de Mecate (the rope pump company). The Dutch ecumenical
aid organization for technical cooperation known as "Overseas Service" or DOG (Dienst
Over de Grenzen) provides technical assistance to the division.
This easily understood document is directed at future producers, aid organizations
working in the field of water and sanitation and all other persons interested in rope
pumps.
Together with the production photo-manual and technical drawings, this document provides
the complete information for carrying out international technology transfer.
This document was elaborated by the Technology Transfer Division of Bombas de Mecate S.A.
and can be reproduced freely with the condition that the source be included.
Los Cedros, Department of Managua, Nicaragua, November 15th, 1998.
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