LERICA C310 - Page 84

84
EN
USER
Rev. 03 - 07/2015 - Cod. 1501151 - Instruction manual for vacuum chamber packaging machines Mod. C254-C308-C312-C412-C420

Themachinesareequippedwithcontrolpanelsthathaveathreedigitdisplayandthepossibilityofsavingup
totenprograms.
5.2 FUNCTIONS

Thisisthebasicparameterwithwhichtheabsenceofairtobeachievedinthepackageismeasured.
Themaximumnalvacuumcreatedinsidethechambervariesfromabout0.5millibarsto2millibarsinoptimal
conditions.
Sinceinmostcasestheaimistoachievethemaximumvacuumpossible,itisgoodpracticetoaddanaddi-
tionalvacuumtimeofabout10secondsoncethemachineindicatesthemaximumvacuumhasbeencreated.
Inordertoreducethepackagingtime,themaximumnumberofpanelsshouldbeplacedinsidethevacuum
chamber,inlinewiththepackagevolume.
Thevacuumissetonascalefrom10to99.
5.2.2 PROTECTING PRODUCTS THAT ARE EASILY CRUSHED: THE GAS FUNCTION
Thisisanimportantfunction,whichallowsdelicateandcompression-sensitiveproductstobepackaged,pre-
ventingthemfrombeingcrushedduetoadifferenceinpressure.
Pleasecontactthedistributioncompaniesforthegasmixtureselection,whoofferavastrangeofspecic
mixturesforthetypeofproduct,besidesprovidingthepressureadjustmentequipment.
Thegasfunctionissetastime-set(seconds).

Oncethevacuumhasbeencreatedandthegasinjected(ifapplicable),thehermeticsealingprocessofthe
bagsisactivatedviaoneormoresealingbars.
Thesealingdurationvariesaccordingtothethicknessofthebags,theambientroomandtheamountofwork
tobecarriedout.
Thesealinglineonthebagmustbeuniform,welldenedandwithnomeltingpoints.

FUNCTION
Creatingavacuuminrigidvacuumcontainers,allowsliquidproducts(sauce,gravy,etc.)orproductsthatare
easilycrushed(vegetables,pastries)tobepreserved.
Theaircanbedrawnfromthecontainercanbeentereddirectlyintothevacuumchamber,ifthesizepermits
this.Sincethemachinescandevelopastrongvacuum,thecontaineranditsspeciallid,whichhasasuction
valve,mustbesufcientlyresistant.
Theresistancemustremainunalteredevenatlowtemperatures,sincemostproductsshallbekeptintherefri-
geratoratanaveragetemperatureof3°C.
ThefunctionisactivatedviatherelativebuttonandstoppedviaStop.
5.2.5 PUMP OIL DEHUMIDIFICATION CYCLE
Withthismaintenancecycle,residuesofoxidationandliquids,whicharedepositedonthebottomofthepump
oiltankduringperiodsofinactivity,aredrainedtogetherwiththeusedoil.