FIELD CASE STUDY|COMPRESSED AIR|PISTON COMPRESSORS
TWO TEST REPORTS · 20.01 — 30.03.2004
series of 2 acts
FIAC and LB-30 compressors: output rose on both under working load
PRODUCTXADO technologytreatment of the cylinder-piston group without disassembling the compressors
TEST OBJECTSTwo piston compressors
with electric driveFIAC AB 500-1250, inv. No. 8 · LB-30 SDB-4/100, inv. No. 3/58
with electric driveFIAC AB 500-1250, inv. No. 8 · LB-30 SDB-4/100, inv. No. 3/58
DOCUMENT TYPETwo UNIPAK LLC reports
signed and stamped
signed and stamped
What was repeated on both compressors
↑9-25.5%
output at working load; receiver fill 256 → 204 s and 100 → 91 s
| COMPRESSOR | HOURS BETWEEN MEASUREMENTS | WHAT WAS MEASURED | REPORT DATE |
|---|---|---|---|
| FIAC AB 500-1250, inv. No. 8 | 560 h | output (receiver fill time), current and power by phase, vibration | 30.03.2004 |
| LB-30 SDB-4/100, inv. No. 3/58 | 410 h | output (receiver fill time), current and power by phase, vibration | 30.03.2004 |
Output: fill time of the standard receiver
| COMPRESSOR | PRESSURE BUILD-UP | TIME BEFORE | TIME AFTER | OUTPUT GAIN |
|---|---|---|---|---|
| FIAC AB 500-1250, inv. No. 8 | 0 → 10 kgf/cm² | 7 min 55 s | 7 min 22 s | +7.5 % |
| FIAC AB 500-1250, inv. No. 8 | 6 → 10 kgf/cm², working load | 4 min 16 s | 3 min 24 s | +25.5 % |
| LB-30 SDB-4/100, inv. No. 3/58 | 0 → 10 kgf/cm² | 210 s | 208 s | +1 % |
| LB-30 SDB-4/100, inv. No. 3/58 | 6 → 10 kgf/cm², working load | 100 s | 91 s | +9 % |
Both reports define the working load as the pressure build-up from 6 to 10 kgf/cm². The output gain is quoted from the conclusions of the reports.
Conclusions of the UNIPAK LLC reports
The commission of UNIPAK LLC signed two reports — one on the FIAC AB 500-1250 compressor and one on the LB-30 SDB-4/100 compressor.
1. On the FIAC AB 500-1250 after 560 hours of operation: "The output of the compressor during build-up from 0 to 10 atm increased by 7.5%, and during pressure build-up from 6 to 10 atm (which corresponds to the working load) increased by 25.5%".
2. On the LB-30 SDB-4/100: "Considering that this compressor is practically new and has little wear, no significant increase in output under working load was noted" — the gain amounted to 1% and 9%.
3. Both reports name the same cause: "the clearances in the cylinder-piston group decreased significantly and the load on the pistons increased". The compressors were not disassembled.
The results refer to the electrically driven piston compressors FIAC AB 500-1250 and LB-30 SDB-4/100 under the production conditions of UNIPAK LLC; on other units and duty cycles the figures may differ. The originals of both reports, signed and stamped, are published in full and available for download.
Current equivalent
- Revitalizant gel for compressors and bearingsCompressors · bearings · spindles
- Revitalizant gel for cylinder restorationEngine cylinders, deep wear
How such units are treated: