Tesmec AFB506, Handbook

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PULLER-TENSIONER
Model: AFB506
Manual: MI-AFB506-149-00-GB Date: 05.10.2016 Author: B. Ghezzi Page: 17 of 37
ATTENTION: when turning the knobs (table 1, pos. 33-39), during working operations
new pull values can be set suitable to the new position of the knob.
ATTENTION: before starting the work, check if the selectors (table 1, pos. 32-38) are on
position. It is forbidden to move the selectors during working operations because
extremely dangerous situations because the machine immediately stops may happen.
ATTENTION: when working with coupled bull-wheels, to set the parameters for PULL
CONTROL it is necessary to operate with the controls on the right side of the control
panel. The new parameters are applied to both the hydraulic circuits at the same time.
4.8 CONNECTION MACHINE - HYDRAULIC HEAD OR REEL WINDER
Machine can feed 2 reel elevators with hydraulic head or 2 reel winders made by Tesmec, both
functioning as tensioner and puller.
Each hydraulic head (or each reel winder) has a connecting kit consisting of two pipes.
Each of these pipes has to be connected to the proper rapid coupler making care to connect them
properly (otherwise the installation will not work).
a. Connect the hoses of the reel elevators to the rapid couplers (table 2, pos. 8 and table 5).
ATTENTION: it is important that, before connecting the rapid couplers, the operator has
checked their cleanliness as the introduction of dirt into the hydraulic circuit can create very
serious damages.
ATTENTION: the rapid couplers must be connected before putting the circuit under pressure.
4.9 BACK PULL OF THE HYDRAULIC HEAD OR OF THE REEL WINDER SETTING
Set the valves (table 1, pos. 24-26) to the minimum necessary value, checking the pressure on the
relevant manometers (table 1, pos. 23 and 25).
Generally, a pressure of 50 bars
– 725 psi is set when the machine is tensioning (min. pressure 20
bars
– 290 psi, max. pressure 70 bars – 1015 psi) and a pressure of 80 bars – 1160 psi when the
machine is recovering (min. pressure 50 bars
– 725 psi, max. pressure 120 bars – 1740 psi).
In both cases, the pressure depends on the dimensions and on the weight of the reel and on the
requested counter pull.
NOTE: if no reel elevator is connected, open the valves (table 1, pos. 24 and 26) till the
minimum pressure can be read on the manometer.
NOTE: it is important to operate this setting to the minimum necessary value in
function of the work that must be carried out (recovery or stringing).
In particular, during the final setting of the conductors, it is necessary to raise the
pressure during recovering and lower it during stringing.
On the contrary, due to the different influence of the mechanic and hydraulic efficiency,
at the same set pressure possible counter pull values sensibly different may arise.
To stop a reel elevator, it is sufficient to close the corresponding valve (table 5, pos. 4).