What preventative maintenance is recommended?
1. Daily maintenance of the sealing blade insures maximum
sealing strength. The sealing blade is Teflon coated to resist
2. At the beginning of each shift, turn on the machine and run two
cycles without any shrink film or product. This will heat up the
seal blade and help loosen the old shrink film residue on the
3. Spray the cleaner/lubricant along the seal blade and wipe
vigorously with paper towel or soft cloth.
If Teflon gel is used, place a small amount on the paper towel
or soft cloth and wipe vigorously the seal blade.
(DO NOT use any abrasive materials such as screw drivers,
sand paper or steel wool to clean the blade. These materials
will scrape off the Teflon coating on the blade.)
(CAUTION – SEAL BLADE IS HOT.)
4. Carefully inspect the sealing blade for bare spots, Teflon flaking
and a general rough uneven surface can affect sealing
(CAUTION – SEAL BLADE IS HOT.)
TEFLON TAPE and NEOPRENE RUBBER
5. Inspect the Teflon tape located around the sealing
arm for burn marks.
If there is burn marks, replace this Teflon tape. We
suggest 2 layers of Teflon tape be applied.
6. Before installing the Teflon tape inspect the neoprene
If there is sign of burnt grooves replace this neoprene
7. Check the program sealing time, a setting too high will burn the Teflon coating and too low of
setting will prevent a positive cut. The average recommended setting is 1.5 - 1.8 seconds.
8. Check the rest of program settings
- sealing arm pause time during automatic cycle (length of time arm will stay up for
product placement for sealing)
- transport belt time (length of time needed to move product from sealing area into the
- heating tunnel belt speed (speed needed to move the package for shrinking the film
- tunnel temperature (temperature needed to shrink the film properly)
9. Check that the transport belt is tracking properly.
Inspect for rips, tears, or fray on the belt. (These damages can
affect the alignment or tracking of the belt.)
10. Inspect the cracks between the belt and the sealing area for
loose particles that can affect the function of the belt.
TRANSPORT BELT ASSEMBLY HEIGHT ADJUSTER
11.Adjust the transport belt height accordingly to
accommodate the product height.
12. If the transport belt height adjuster is difficult to
turn, lubricate it accordingly.
13. If pre-perforated film is being used move the
perforators to the side
14. For standard film, using a 3mm Allen wrench
adjust the perforator wheels to accommodate the
smallest and largest packages.
Make sure perforation is not inline with sealing
area, as this can create a week seal.
SEALING AREA COOLING SYSTEM
15. The sealing blade has a cooling system to maintain
the heat of the sealing blade
16. Removing the seal arm cover (part # 34) will expose
the fill plug and dip stick (part # 35) for the cooling
17. Make sure the coolant volume is at the proper level.
(2 cmm or about 3/4 inch from the bottom of the
18. Check if the waste winder functions properly.
If the actuator arm (part # 10) is down the waste
winder will turn.
If the actuator arm is lifter to about 9 o'clock the
waste winder will stop.
If it does not stop check the position of the
actuator switch. It might be loose or bent.
Adjust the actuator switch accordingly.
20. Check that the tunnel conveyor moves freely.
21. Check the chains that hold the rollers together are
Dried, rusty or "gunky" chains will cause binding
and can eventually burn the motor.
22. Inpect the rollers for sign of damages (stripping,
rip or tear)
23. Make sure red curtains are not stuck in the chains
Adjust curtain height accordingly to eliminate this
24. Move the curtain aside and inspect inside of tunnel
for any particles that can cause blockage of the
chains and rollers.
25. Adjust the air deflectors (part # 7) accordingly to
ensure proper shrinking of film.
Minipack does not assume any responsibility or liability for the advice given and shall not be liable for any direct, indirect, special, incidental or consequential damages in connection with the use of this information.