. Flow test . Converter charge RELIEF VALVE The relief valve vents at least 100 liters per minute (lpm) with an applied pressure of 100 to 120 psig. The maximum allowable leakage with 95 psig applied is 0.01 lpm. Make the following entries on the performance test sheet: 1. Locate the indicated inches of water (inch of H₂o) for 100 lpm on correction card 4. Enter indicated inches of H₂O in the space provided on the performance test sheet. 2. Locate the indicated psig for the actual pressures of 95, 100 and 120 psig on correction card number 2. Enter indicated psig in space provided on performance test sheet. 3. Locate the indicated inches of H₂O for the actual flow of 0.01 lpm on correction card number 7. Enter the indicated in. H₂O in space provided on performance test sheet. CONVERTER LEAKAGE The converter leakage test is performed with the converter pressurized with gaseous oxygen to 95 psig. Locate the indicated psig for the actual 95 psig on correction card number 2. Enter indicated psig in space provided on performance test sheet. FILL AND BUILDUP TIME The time required to fill the converter (10 liters) should not exceed 10 minutes at a filling pressure of 30 psig. The time required for the filled converter to buildup to a working pressure of 70 psig should not exceed 5 minutes from time the servicing trailer filler valve is disconnected from converter. Locate indicated psig for the actual 70 psig pressure on correction card number 2. Enter indicated psig in space provided on performance test sheet. FLOW The converter can deliver gaseous oxygen at a flow rate of 120 lpm while maintaining a pressure of 55 to 90 psig. Make the following entries on the performance test sheet: 1. Locate the indicated inches of H₂O for the actual flow of 120 lpm on correction card number 4. Enter indicated inches of H₂O in space provided on performance test sheet. 2. Locate the indicated psig for actual pressures of 55 and 90 psig on correction card number 2. Enter actual psig in spaces provided on performance test sheet. CONVERTER CHARGE Upon completing the bench test, the converter is emptied of LOX, purged with nitrogen, and pressurized with gaseous oxygen at 25 to 30 psig. This prevents moisture from entering the converter during shipment/storage. Locate the indicated psig for the actual pressures of 25 to 30 psig on correction card number 2. Enter indicated psig in spaces provided on the performance test sheet. MAINTENANCE This section contains the procedural steps for inspecting, testing, troubleshooting, disassembly, cleaning, repair, assembly and adjusting of the GCU-24/A liquid oxygen converter assembly (P/N 10C-0016-10). Procedural steps outlined in this section are listed under the inspection cycle in which they are required, and in the sequence in which they normally occur. ACCEPTANCE/TURNAROUND/ DAILY/PREFLIGHT/POSTFLIGHT AND TRANSFER INSPECTIONS The acceptance/turnaround/daily/preflight/ postflight and transfer inspections consist of a visual inspection followed by a functional test. These inspections and tests are performed along with the aircraft inspection requirements for the aircraft in which the converter is installed. In making the following checks, if you discover any defects, refer to table 12-17 for troubleshooting assistance. 12-24