TUFFA TANKS 30000VBFS - MC Box Fuel Management System; Disengaging MC System & Daily Use; Meter Calibration & Accuracy Checks

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7. OPERATION OF THE SYSTEM 7. OPERATION OF THE SYSTEM
Disengaging the “MC” system
AlltheMCBOXfunctionsarecontrolledbytheMCcontrolsystem.
TheMCsystemcanneverthelessbedisengagedforanystartupormaintenanceactivities
requiringrepeatedpumpstarting.
Inthesecase,itisoftenconvenienttosimplifypumpstartupbynothavingtoenteranycodeand
recordanydispensingdata.
Todothis,aJUMPERhasbeenttedonthecardthatpermitsswitchingfromAUTOMATICmode
(coderequesttoaccessdispensing)toMANUALmode(nocoderequest).
In MANUALmode:
•TheMC’sLCDmaybeswitchedo󰀨(onlythebacklightis
clearlyvisible)oryoumaycontinuetoseetheindicationthat
waspresentatthetimeoftransitionfromAUTOtoMAN.
•NoPINCODEisrequiredtoactivatethepump;thepump
startswhenthedispensernozzleisremovedfromitslodging
andstopswhenitisputback(naturallythisisintheevent
thatthe“nozzlecontact”functionisused).
•Theamountdispensedisnotshowninanyway.
WARNING
Before accessing the electrical parts, be sure that you have disconnected all of
the general switches that power the device.
WARNING
Thejumperisonlyaccessiblebyopeningthefrontpanelandispositionedasshowninthe
photo.Inthisoperatingmode,MCdoesnotrecordanydatarelatingtoperformeddispensing
operations.Before accessing this jumper, the voltage must be removed.
Meter calibration
BeforeusingtheMCBOXstation,checktheMETERACCURACY.
Forthispurpose,proceedasfollows:
•EnterapreviouslyenabledUSERPINcode;
•Runthefuelintoacalibratedcontainer;
•Comparethequantityofdispenseddieselfuelusingacalibratedcontainer.
IfaccuracyisNOTsatisfactory,proceedtoCALIBRATETHEMETERaccordingtothe
instructionsinthespecicmanual.
Every day use
ThankstotheMCcontrolsystem,alltheMCBOXmodelsprovideaccesstoauthorisedusersonly.
MCacknowledgesUserauthorisationbymeansoftwoalternativesystems:
•Theenteringofa4-gureSECRETCODE(PINCODE)
•Thettingofanelectronickey(OPTIONAL)
WARNING
To correctly check accuracy, always keep to the following instructions:
• Use a precision sample container, featuring a graduated scale, with a capacity of at
least 20 litres.
• Before making the check, always make sure you have eliminated all the air from the
system and then run the fuel until a full and regular ow is achieved.
• Dispense continuously at MC BOX maximum ow rate.
• Stop the ow by quickly closing the nozzle.
• Reach the graduated area of the sample container, avoiding prolonged dispensing
at low ow rate, but rather performing short dispensing operations at maximum ow
rate.
• Compare the reading provided by the container, with that provided by MC BOX, after
waiting for all the froth to disappear
WARNING
Di󰀨erences of up to 1/10 of a litre a󰀨ecting the dispensing of 20 litres of uid fall
within the guaranteed precision of +/- 0,5%.
WARNING
All the users to whom a PIN CODE is assigned must be adequately instructed and
be at least acquainted with the contents of this chapter.