Coolant Check; Substituting The Rubber And Teflon; Adjusting The Cams; Changing The Sealing Blade - Minipack-Torre FM76A Digit Instrucciones Para La Instalación, Uso Y Mantenimento

Chapter 7. Ordinary maintenance

7.5. Coolant check

Every 4 months check the coolant level by unscrewing the cap (35) (figure 7.5. page 70). Check that the rod is made wet
by the liquid for about 2 cm height, otherwise add a mixture of water and antifreeze liquid (10%).

7.6. Substituting the rubber and Teflon

When the Teflon-strikers (36) are worn out, substitute them with spare parts, making sure the application is linear and
even (figure 7.6. page 70). Before applying the Teflon self-adhesive strip clean the rubber part (37) with a detergent.
If the rubber (37) is also damaged, substitute it as follows:
1. remove the old rubber
2. clean its housing
3. apply some drops of glue in the housing
4. insert the new rubber in a linear way
5. clean the rubber with a detergent
6. apply the self-adhesive Teflon-strip.

7.7. Adjusting the cams

Cams must only be adjusted by authorised personnel!
It is necessary to disassemble the panel (38) at the back of the machine in order to get access to the cams (figure 7.7.A page 70).
There are 4 cams which control (figure 7.7.B page 70):
1. The lowering of the upper hood and so its pressure on the sealing blade.
2. The maximum opening of the upper hood and the start of the conveyor belt.
3. Overriding activation of the safety device on the sealing frame (
4. Detachment of the upper hood immediately after sealing.
The adjustment is made by loosening the screw (39) and rotating the cam to the correct position.
Attention: adjust cam gradually with small movements!

7.8. Changing the sealing blade

To substitute the sealing blade (27) follow this procedure (figure 7.8. page 70):
Disconnect power to the machine
Unscrew the three screws (40), (41), (42)
Remove the old sealing blade
Clean the housing and if necessary substitute the insulating Teflon (43) of the central clamp
Insert the new sealing blade starting from the central clamp and tighten the screw (41)
Trim the new sealing blade according to the holes of the pistons (44) and (45)
Complete the insertion if the sealing blade in the whole housing
Push the rear piston completely (45) towards the sealing blade to make it enter the hole of the piston itself and then
tighten screw (42)
Push the front piston (44) completely towards the sealing blade to make it enter the hole of the piston itself and then
tighten screw (40)
Trim the Teflon projecting from the central clamp
Make sure that the sealing blade is well positioned and under tension

7.9. Wiring diagram

(figure 7.9. page 71/72).
B1 Hood descent limit switch
B2 Hood rise limit switch
B3 Safety device override limit switch
B4 Hood detachment limit switch
B5 Safety limit switch
B6 Rewinder limit switch
BT1 Thermocouple
E1/2 Cooling fan
ER1 Sealing blade heater
ER2/3 Heaters
F1 Sealing blade / resistors fuse
F2 Fan / belt / hood motor fuse
F3 Auxiliary transformer fuse
F4 Fan / pump motor fuse
FU1 Board fuse 5X20
K1 Power module
M1 Fan motor
M2 Belt motor
M3 Hood motor
10.3X38
10.3X38
10.3X38
5X20
∼
5 mm before the sealing).
M4 Cooling pump motor
M5 Rewinder motor
Q1 Main switch
Q2 Rewinder switch
QM1 Sealing blade contactor
QM2 Heaters contactor
QM3 Fan motor contactor
QM4 Belt motor contactor
QM5 Hood descent contactor
QM6 Hood rise contactor
QM7 Accessories contactor
S0 Emergency pushbutton
S1 Start button
S2 Manual selector
SK1 Control board
T1 Cutting transformer
T2 Auxiliary transformer
X1 Rewinder power supply socket
X2 Rewinder power supply plug
17
GB