SIGMA BM-286A User Manual
Page 36
5. MAINTENANCE page 33
Model BM-286A
5. MAINTENANCE
5.1. OPERATOR MAINTENANCE
The slide tracks on the weight scale platform should be greased monthly. The hinges and door
latch do not require lubrication.
5.2. CALIBRATION
The electronic circuitry has proven to be very stable over long periods of time. However, the
following calibration should be performed at least annually to ensure reliable operation and
accurate measurements. There is a Calibration Checklist (5.5.) at the end of this section. Copies
should be made, and filled out each time the system is calibrated.
NOTE:
The high voltage affects the pulse amplitude, so the high voltage must be tested before
the RCS-110 amplifiers are calibrated. This procedure should be performed only by qualified
personnel!
Calibration equipment required:
DVM with 10MÛ input impedance
Oscilloscope with >20 MHz bandwidth
Test Source (5-12 µCi of
137
Cs)
Remove the right side face plate to gain access to the RCS boards. Refer to"BM-286A Pictorial
View (Door Open)" Drawing 2 (Appendix F.).