32
Adjusting the Preload
– Preparations for adjusting the preload are the same as for checking the
preload.
– The preload is changed as follows:
– in Master
pro
balances with the brass system, preload weights are removed
from or added to the end of the lever.
– in Master
pro
balances with the small single-casting block system, preload
weights (arrow) are removed from or added to the lever over the magnet.
– in Master
pro
balances with the large single-casting block system, preload
weights are removed or added (rough adjustment) or position of the
preload weight on the lever is moved (fine adjustment) - to do this, you will
need to loosen the set screw.
– The balance remains loaded with the preload test weight during this proce-
dure.
– Check the display of the PSION server/PC or the digital voltmeter after
each change.
– If the preload voltage/preload weight value is within the tolerance range,
tighten down the set screw.
Note:
After you adjust the preload, the off-center load, linearity and span must be
checked and, if necessary, adjusted.
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Summary of Contents for Master Pro LA12000P
Page 50: ...50 Spare part list LP LA LP LA Exploded View Diagram 1 LP_exp_1 WMF LA LP...
Page 52: ...52 LP LA Exploded View Diagram 2 LP_exp_2 EPS...
Page 54: ...54 LP LA Exploded View Diagram 3 LP_exp_3 EPS...
Page 56: ...56 LP_exp_4 EPS LP LA Exploded View Diagram 4...
Page 58: ...58 LP_exp1a WMF LP LA Exploded View Diagram 1a LP LA...
Page 62: ...62 LP_exp_3a WMF LP LA Exploded View Diagram 3a 301 302 308 309 305 306 307 304 305...