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Instruction ManualToftejorg TZ-66
Standard machines and machines delivered with ATEX certification
in accordance with Directive 94/9/EC
IM-TE91A300-EN9
General Description
The Toftejorg TZ-66 is a media driven and media lubricated tank cleaning machine. As it is self
lubricating, there is no lubricating substances such as oil, grease etc. in the machine which needs to be
regularly changed.
Functioning
The flow of the cleaning fluid into the machine passes through a guide and a turbine, which is set into
rotation. The turbine rotation is through a gearbox transformed into a combined horizontal rotation of
the machine body and a vertical rotation of the nozzles.
The combined motion of the machine body and the nozzles ensures a fully indexed tank cleaning
coverage. After 5
5
/
8
revolutions of Hub with nozzles (5
3/8
revolutions of the machine body), one coarse
cleaning pattern is laid out on the tank surface. During the following rounds, this pattern is repeated 7
times, each of which is displaced
1
/
8
of the mesh in the pattern. After a total of 45 revolutions of the Hub
with nozzles (43 revolutions of the machine body), a complete cleaning pattern has been laid out, and
the first pattern is repeated.
First cycle
Full pattern
The speed of rotation of the turbine depends on the flow rate through the machine. The higher the flow
rate is, the higher the speed of rotation will be. In order to control the RPM of the machine for a wide
range of flow rates, the efficiency of the turbine can be changed (100% and 0% Turbine/Inlet guide).
Apart from the jet flow through the nozzles, fluid is leaking through the top of the machine, at the hub
and through the bottom cover. The leakages between the moving parts at the top and at the hub are
cleaning the gabs and thus preventing build-up of material that might cause extra friction. The flow
through the bottom cover is due to the fact that the machine is media lubricated, and that accordingly a
flow through the gearbox is needed.
