Tesmec FRB616, Installation, Operation And Maintenence Handbook

Page: 18 / 102

TENSIONER
Model: FRB616
Manual: MI-FRB616-020-01-GB Date: 11.03.2015 Author: M. Colleoni Page: 15 of 33
4.7 MACHINE USE FOR THE INDEPENDENT BRAKING OF RIGHT AND LEFT BULL-WHEELS
a. Check if the connecting pins (table 5) of the bull-wheels are disengaged. If not, disengage them.
b. Move the selector (table 4, pos. 38, 39) towards left .
c. Move the selectors (table 4, pos. 13,17) towards position (BLOCKED).
d. Move the selector (table 4, pos. 22) towards left
e. Move the joystick (table 4, pos. 11) towards central neutral position.
f. Move the selectors (table 4, pos. 13, 17) towards position (FREE).
Now the bull-wheels can rotate freely.
g. Use the potentiometers (table 4, pos. 12,16) to separately brake right and left bull-wheels.
The circuits' pressure, proportional to the pull, can be read on the manometers (table 4, pos. 14,18).
A suitably graduated ring nut mounted outside them can read the conductors tension.
PROHIBITION: is not possible to low or lift the joystick (table 4, pos. 11) from central
neutral position and move the selectors (table 4, pos. 38, 39) rightwards, in this phase .
Can damage seriously the machine.
4.8 MACHINE USE FOR THE SIMULTANEOUS BRAKING OF RIGHT AND LEFT BULL-
WHEELS
a) Connect right and left bull-wheels by the suitable pins (table 6).
b) Move the selectors (table 4, pos. 13,17) towards position (BLOCKED).
c) Move the selector (table 4, pos. 22) towards right.
d) Move the joystick (table 4, pos. 11) towards central neutral position.
e) Move the selector (table 4, pos. 17) towards position (FREE).
Now the bull-wheels can rotate freely. The selector (table 4, pos. 13) is not connected.
f) Use the potentiometer (table 4, pos. 16) to brake right and left bull-wheels.
This potentiometer controls the two circuits while the other potentiometer (table 4, pos. 12) is not
connected.
The circuits' pressure, proportional to the pull, can be read on the manometers (table 7, pos. 14,18).
The cables tension can be read by a suitably graduated ring nut mounted outside them.
PROHIBITION: is not possible to low or lift the joystick (table 4, pos. 11) from central
neutral position and move the selectors (table 4, pos. 38, 39) rightwards, in this phase .
Can damage seriously the machine.
4.9 MACHINE STOP
To stop the machine after the use as tensioner and after the stop of the puller, act as follows:
a. turn the potentiometers (table 4, pos. 12,16) in clockwise direction till the bull-wheels stop.
b. move the selectors (table 4, pos. 13,17) towards position (BLOCKED) to lock the bull-
wheels. Before carrying out this manoeuvre it is better to wait to the bull-wheels stop if it is not an
emergency intervention; in this way the vacuum brakes damage is avoid.
NOTE: if the Diesel engine stops for unknown reasons, the vacuum brakes
automatically lock. Before restarting the Diesel engine, move the selectors towards
position (BLOCKED).