APS Stocks the following critical spare parts for Libra Systems controls:
| 1 | 1153 | MicroController Module (goes inside Control Unit for batch plants, or separate “shoebox” enclosure for silo loadout on drum plants) |
| 2 | 1157 | Input Coupler Board (for junction box) |
| 2 | 1158 | Output Coupler Board (for junction box) |
| 2 | 1156 | Input-Output Interface Board (for junction box) |
| 1 | 1182 | Digital Weight Indicator Interface Module (connects to Cardinal 200 or 205 digital weight indicator) |
| 1 | 1160 | Switch Panel Board |
| 1 | 17250 | EURO Power Cable |
| 1 | DB9M to DB9F Cable – 25′ | |
| 1 | 22178 | Control Unit to Jbox Cable |
| 1 | B-22163 | Computer to Control Unit |
| 1 | 1175 | Ribbon |
| 1 | 1161 | Ribbon |
| 1 | 1161 | Ribbon (no Silos) |
| 1 | 17238-2 | Board |
| 1 | 17075-5 | Board |
| 1 | 17238-0 | Board |
| 1 | 17238-1 | Board |