LOWLANDER HD MK2 & WIDEBODY MANURE SPREADER – INSTRUCTION & SPARES MANUAL
Page 20
Typical Reading – 0-10 mV (0.4mV was an empty 5m3, 5t spreader with 4 cells, this showed as
0.385 in the Loadcell Diagnostics)
Anything around 30mV would be unusual
Anything around 100mV would indicate a failure of a load cell
0v exactly would be strange because the cells should be loaded by the hopper even when empty
Anything negative would also indicate a failure
1.11.3.3 If an unusual reading is measured, then each cell will need to be tested separately. Remove
the white (Sig +) and green (Sig -) wires for one cell and measure the reading.
The same guidelines apply as in 1.11.3.2. Measure each load cell one by one, in the same way, and check to
see if any are giving a very different reading to the others.
1.11.3.4 To double check any cells that are suspected of being faulty, the impedance (resistance)
can be measured in two places, Input and Output.
If they are functioning correctly the measured value (Ohms) should not fall outside of the specified
ranges below, regardless of weight on the cells.
All four wires should be removed from the cell before the readings are taken as follows:
Input: Red and Black wires
Output: Green and White wires
Input
20t Standard Output: 410783, 410784 = 410Ω +/- 25Ω
20t Low Output: 410785 = 726Ω +/- 25
13t Standard: 407312 (S/SR/500-2-089), 407498 (S/SR/500-2-090) = 410Ω +/- 25Ω
13t Low Output: 407376 (S/SR/500-2-093) = 726Ω +/- 25
Output
20t (all types): 410783, 410784, 410785 = 354Ω +/- 3Ω
13t (all types) 407312, 407498 and 407376 = 354Ω +/- 3Ω
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