Page 8 Instruction Manual, Gunclean Toftejorg 270FT Mark I
IM-TE102766-3-EN10
Technical Description
Power Unit
Power Unit Working Principle
By using
the fluid in the lines, a turbine fitted in the inlet housing drives the lower one way clutch and rocker
which is transmitting power to the turning worm gear, connected to the lifting rod.
The lifting rod is fitted with a long key and can slide up and down inside the turning worm gear hub.
The lifting worm gear screw is connected to the turning gear worm screw by a programmable gearing. On the
lifting worm screw the upper one way clutch and rocker assy is fitted. The turning worm screw has a cam. This
cam lifts the upper rocker and turns the lifting worm screw an amount corresponding to the stroke the rocker is
allowed to do. The stroke is regulated by the programming knob and adjusting screw. Due to the one way
clutch the lifting worm screw only rotates one way. The lifting worm gear rotates a crank shaft where the crank-
pin is moving inside a lifting yoke fitted to the lifting rod. The lifting yoke is journalled on the lifting rod and only
transmits lifting and lowering movements to the lifting rod.
The programmable gearing is used to make it possible to choose a pitch angle suitable for most jet lengths
required.
A pitch giving a distance of max. 0.5 m height between two jets on the surface with the longest distance from
the gun can be used as a guide when choosing the pitch angle.
The programmable pitch and the pre-programmed lifting pattern giving a tighter pattern at the bottom of e.g. the
tanks make the Power Unit extremely easy to use.
No change of programme is required once the pitch angle is programmed. Hand-crank the nozzle to the
desired starting angle shown on the nozzle angle scale, open the valve and the Power Unit is running. One
cycle from top to bottom is usually all that is needed.
The rotation speed can vary between 0.5 rpm to 3 rpm depending on the nozzle dia and line pressure. Some
adjustments of the rotation speed can be carried out by adjusting the turbine mounted in the inlet housing.
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