EN
MINI AVANT
IS11/11 - 561185
7 - USE AND OPERATION
Cap. 7 -
Pag. 1/10
THIS MANUAL IS PROPERTY OF
-
ANY TOTAL OR PARTIAL REPRODUCTION IS STRICTLY FORBIDDEN
7.1 OPERATING
PRINCIPLE
MINI AVANT accepts ready-mixed products (discharged into the hopper mainly by a concrete mixer) which is discharged over
the vibrating frame. As well as being a safety device it also separates the particles that are too large to be pumped from the
mixture. The sieved mixture falls into the hopper and the mixing device pushes it towards the piston pump.
The pump conveys the mixture towards the mortar pipe. A gun at the end of the mortar pipe joins the mixture flow rate to a flow
of compressed air, which allows the opening of the jet of mixture at the gun nozzle outlet. The jet is then distributed on the wall.
The start and end of pumping are controlled by a cock positioned downstream from the air pipe, in proximity of the gun: by
closing the air cock, MINI AVANT stops temporarily, opening the cock, MINI AVANT re-starts normal functioning.
It is possible to make the mixture circulate partially or completely in the hopper by acting on the by-pass lever.
If MINI AVANT is to be used only as a conveyor, the gun does not have to be mounted and the air cock described above is just
a pumping start/end remote control.
MINI AVANT elaborates continuous cycle material until the mixture is present in the hopper.
7.2 PUMPABLE
MATERIALS
Below finds some fundamental concepts in the realisation of mixtures.
- The aggregates must be within the correct particle size curve:
(mixed sand with particle size variable from 0 to 6 mm.).
- There must be a correct amount of binder (about 350 - 400 kg per cubed metre of mixture) and in the proportions indicated
below:
• 2/3 hydraulic lime + 1/3 slack lime;
• 1/3 hydraulic lime + 2/3 slack lime;
• 1/3 2/3 slack lime;
• 2/3 1/3 slack lime;
- Do not use plasticizer lime and in all cases as a percentage not exceeding 1/3 of the binder: in this case machine
performance can decrease greatly.
- The mixture must have a plastic consistency (not too dry and not too wet).
7.2.1 Applications
MINI AVANT has many accessories and kits, thanks to which it can work with different types of materials.
- Thick-layer traditional plaster application (all versions).
- Thick-layer ready-mixed plaster application
(all ve ready-mixed and light materials pumping kit).
- Plaster and special mortar application for structural recovery and renovations.
(all ve ready-mixed and light materials pumping kit).
- Thin-layer finishings application
(VARIO version).
- Pumping common or ready-mixed mortars for walls
(all versions, with the ready-mixed product pumping kit).
- Filling of joints and cracks on facing masonry; filling joints on pre-fabricated structures
(VARIO version).
- Controlled-pressure consolidation injections
(all ve injection device)
- Pumping self-levelling screeds
(all versions).
- Application of light isolating materials
(all ve ready-mixed and light materials pumping kit).
7.2.2
Ready-mixed product and light isolating product kit
The kit for pumping the cement-based ready-mixed materials, not gypsum, includes:
1) gun for ready-mixed products [dia] 25.
2) 5 metres of rubber mortar piping, [dia] 25, complete with fittings.
3) Air pipe extension.
4) Protection grill (FIG.21).
5) Two steel ball valves (FIG.23-REF.1).
6) Red intake valve body (optional) (FIG.22-REF.3).
7) Valve seats (optional) (FIG.23-REF.2/3).
