LERICA C310 - Page 110

110
EN
USER
Rev. 03 - 07/2015 - Cod. 1501151 - Instruction manual for vacuum chamber packaging machines Mod. C254-C308-C312-C412-C420
  SOLUTION


• Bagpositionedincorrectly. • Placethebaginthecentreonthesealingbar
projectingby20mmbeyondit.
• Bagperforated. • Chooseathickerbagandwraptheproduct
withclinglmorsoftpaper.
• Sealinginsufcient. • Increasethesealingtime.
• Bag defective. • Changethebag.
• Dirtybagopen. • Useanewbagandavoidsmearingtheope-
ningwithoil,grease,etc.
• Bagtoobigortoosmallinrelation
toproductsize.
• Choose a bag size suitable for product di-
mensions.
 

• Sealing time too long. • Decreasethesealingtime.
 • Sealingtimetooshort. • Increasethesealingtime.
 • Dirtyweldingbarcontacts. • Clean contacts.
• Discontinued welding bar con-
tacts.
• Restore connection (contactyourservice
centre).
• Sealingbarwirebroken. • Changewire(contactaServiceCentre).
• Barliftingpistondefective • Replacethebarliftingpiston(contactaSer-
vice Centre).
 • Sealingbardirty. • Cleansealingbar.
• Sealingtimeinsufcientforbasic
bagweight.
• Increase sealing time.
• Teoncoverworn. • ChangeTeoncover.
• Gaspercentageistoohigh(close
to70%)withrespecttothepacka-
gedproduct.
• Decreasethegasinjectiontime.
• Silicone worn. • Changesilicone.
 • Gasushingtimeinsufcient.
• Increasethegasinjectiontime.
• Gas cylinder pressure Insuffi-
cient.
• Adjustpressureoncylinderreducerto1bar.
• Gas nozzle not inserted in bag
mouth.
• Repositionbagbyinsertinggasnozzleinthe
bagmouth.
• Cylindervalveorpressureredu-
cer closed.
• Open cylinder valves and adjust pressure
reducerto1.0bar.

• Gasvolumetoohigh. • Decreasethegasinjectiontime.
Vacuum not created in contai-

• Containerlidpositionedpoorlyor
lidvalveopen.
• Repositionthecontainerlid,makingsurethe
gasketisingoodconditionandinsertedinits
seatandthesuctionvalveonthelidisinthe
openposition.