15
Chapter 7. Ordinary maintenance
EN
7.3. Plastic film and other scrap removal
When the bobbin of the automatic coiler (23) is full, remove the film by unscrewing the knob (32) and taking away the
disk (33) (figure 7.3 page 62).
7.4. Machine cleaning
Use a cloth moistened with water for the cleaning of the machine (figure 7.4 page 62).
7.5. Control of cooling liquid
Check the level of the cooling fluid once every 4 months. To do so, remove the guard (34) and unscrew the plug (35)
(figure 7.5 page 62). Check that the rod is wetted by the liquid at about 2 cm height, otherwise add a mixture of water and
antifreeze liquid (10%).
7.6. Rubber and teflon replacement
When the Teflon-strikers (36) are worn out, replace them with spare parts, paying attention that the application is linear and even (figure
7.6. page 62). Before applying the Teflon self-adhesive strip clean the rubber part (37) with a detergent. If also the rubber (37) is
damaged, replace 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. Adjustment of the cams
The adjustment of the cams must only be carried out 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 62). There
are 2 cams which control (figure 7.7.B page 62):
1.
The lowering of the sealing frame and thus the pressure of same on the sealing blade.
2.
The maximum opening of the sealing frame and the start of the conveyor belt.
The adjustment is made by loosening the screw (39) and rotating the cam in the right position.
Attention: for the adjustment of the cams, shift them gradually!
7.8. Replacement of sealding blade
To replace the sealing blade (27) follow this procedure (figure 7.8. page 62):
Disconnect power to the machine
Unscrew the three screws (40), (41), (42)
Remove the old sealing blade
Clean the housing and if necessary replace 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 onwards (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 onwards 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 in tension
ATTENTION!
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.
7.9. Wiring diagram
(figure 7.9. page 63/64).
B1
Frame descent limit switch
M4
Rewinder motor
B2
Frame rise limit switch
Q1
Main switch
B3
Safety device cutting out limit switch
Q2
Rewinder switch
B4
Safety limit switch
QM1
Sealing blade contactor
B5
Rewinder limit switch
QM2
Frame rise contactor
E1/2
Cooling fans
QM3
Frame descent contactor
ER1
Sealing blade heater
QM4
Belt contactor
F1
Sealing blade fuse 10.3X38
QM5
Accessories contactor
F2
Motor fuse 10.3X38
S0
Emergency pushbutton
F3
Auxiliary transformer fuse 10.3X38
S1
Start button
F4
Ventilator / pump motor fuse 5X20
S2
Manual selector
FU1
Board fuse 5X20
SK1
Control board
K1
Electronic control board
T1
Cutting transformer
M1
Belt motor
T2
Auxiliary transformer
M2
Frame drive motor
X1
Rewinder power supply socket
M3
Pump motor
X2
Rewinder power supply plug
Summary of Contents for Modular 50 Digit
Page 59: ...58 2 1 A 2 1 B 2 1 C Modular 50 2 1 C Modular 70 2 3 3 1 A Modular 50 ...
Page 60: ...59 3 1 A Modular 70 3 1 B 3 1 C 3 1 D 3 2 3 3 ...
Page 61: ...60 3 4 Modular 50 3 4 Modular 70 3 5 3 6 3 7 3 8 ...
Page 62: ...61 3 9 3 10 4 1 5 1 5 2 6 1 A 6 1 B 6 1 C ...
Page 63: ...62 7 2 7 3 7 4 7 5 7 6 7 7 A 7 7 B 7 8 ...
Page 64: ...63 7 9 ...
Page 65: ...64 7 9 ...
Page 66: ...65 ...
