The data, information and descriptions, and the technology described herein are the exclusive intellectual property of Snap-on Climate Solutions S.r.l. and
constitute industrial secrets. Said information is communicated in strict confidentiality; said information may be used only for the purpose for which it is
communicated; said information may not be divulged, communicated, or revealed to third parties and/or reproduced by any means for any reason whatsoever; said
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Service manual Cinquecento12 (VA21) [MANUY2V.SB0] ed.1 ver.0.1.doc pag.70 - 09/11/2021
TANK CELL
If you have not changed the load cell or motherboard you can restore the calibration (refer to
RESTORE CALIBRATION paragraph)
Disconnect the machine from the electrical supply.
Procure a known reference weight from 20 kg.
Unscrew the tank lock nut.
From CALIBRATION, select TANK CELL, the following screen is displayed:
Make sure that the tank plate is free and unimpeded (hoses, wires, ...)
With the tank lifted off the scale plate, select Min, verify that the value is 0 g (otherwise use the
keypad) then press ENTER to confirm Min.
Place the reference weight (20 kg) at the center of the scale plate. Use keys 0 through 9
to type in the value of the weight; press ENTER to confirm MAX.
Remove the reference weight, the verify the correct reading of the scale, adding and
removing different reference weights.
Press ENTER to exit to CALIBRATION MENU
Then press ESC to save.
Switch off the machine and disconnect it from mains supply.
Replace the tank on the scale plate Screw the tank lock nut.
Switch on the machine
Select the Tare, use keys 0 through 9 to type the value in grams read and press TARE
then press ENTER.
press ESC to save.
NOTE: To get an accurate value of the tare this should be weighed with the empty tank
mounted on the plate (tare value can vary from a few grams, depending on the positioning of
the tank and the tubing connected to it), but it is not always possible or easy empty it. The
value of the tare does not compromise the correct functioning of the cell but simply move the
value "0" reference distorting the availability of a few grams of refrigerant present in the tank.
0.270 gain
3593 offset
24415 raw
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