Alarm Signals And Warnings; The Vacuum And Useful Tips; Notions Regarding The Pump Oil And The Packaging Temperatures Of The Products - LERICA C254 Mode D'emploi

Rev. 03 - 07/2015 - Cod. 1501151 - Instruction manual for vacuum chamber packaging machines Mod. C254-C308-C312-C412-C420

5.3 alaRm SIgNalS aNd WaRNINgS

SIgNalS
Total number of cycles performed. The machine has an indicator that signals the total number of cycles
performed by the machine, so as to indicate the remaining cycles before the pump oil must be replaced.
alaRm WaRNINgS
Pump oil replacement alarm: once the maximum number of cycles, expected for normal use of the installed
pump, is reached, an alarm is displayed for the oil to be replaced through an audible and visual alarm signal.
6. bEFORE USING ThE PaCKING MaChINE:
NOtIONS REgaRdINg thE vaCUUm aNd USEFUl tIPS
6.1 NOTIONS REGaRdING ThE PUMP OIL aNd ThE PaCKaGING TEMPERaTURES
OF thE PROdUCtS
These rules are explained in more detail in the paragraphs below. It is important for the pump
oil (specific for food vacuum applications and Fda certified) to always be kept in optimal
conditions: fluid and clean, i.e. free from grit and watery parts.
For this purpose, follow the important rules below:
1) The products to be vacuum packed must have been cooled to 3 °C in a refrigerator or a blast chiller.
At this temperature:
• Bacterial growth is blocked and optimal preservation duration and output is achieved.
• The transfer of moisture in the form of water vapour, which is drawn by the pump and thereby causes
oxidation of the internal surfaces, is minimised.
2) Periodically check the oil level and perform an oil dehumidification cycle at least once a week (refer
to Chapters 6.5.4 and 9.8).
3) The oil must be replaced according to the work load, however, at least every 6 months or every 100
operating hours. The machine signals a visual and acoustic warning when the oil must be replaced, which
is triggered when the maximum number of cycles allowed by the pump model is reached.
4) The oil must be replaced before start-up if the machine is not used for more than a month. oxidation
and liquid residue, which settle at the bottom of the pump oil tank when the machine is not used, are drained
together with the spent oil (refer to Chapter 8.6). .
5) The temperature of the room where the machine is installed must possibly not be lower than 10°C,
in order to prevent an excessive increase in oil density. The more the oil is fluid the easier the pump
starts-up when cold.
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