FAT Checks for a Single-Drum Vibratory Roller
A buyer's guide to defining practical pass or fail checks for a factory acceptance test of a single-drum vibratory roller, using catalog values as reference points only.
Before signing off a factory acceptance test, decide which functions must be demonstrated rather than merely documented. For a single-drum vibratory roller used on soil and aggregate, ask the supplier to show both vibration frequency settings, 35 Hz and 40 Hz, and to record the drum response at each. Treat the catalog figures, including 12,800 kg operating mass, 93 kW at 2,200 rpm, and 1,555 mm drum diameter, as reference values; confirm the actual test unit's declared values in the quotation.
Build the pass or fail list around observable checks: does the drum start and stop vibration cleanly at both frequencies, does the amplitude control change as specified, and are there abnormal noises or leaks during a short run? Ask whether the test includes a compaction demonstration on soil or aggregate, and if so, what acceptance evidence is recorded. Clarify which instruments are calibrated and whether results are logged against serial numbers.
Before requesting a quote, confirm with the supplier which checks are included in the standard factory test, what documentation is provided, and whether any additional demonstration must be agreed in writing.