A test setup and a performance check were developed to verify proper functioning of the equipment under various conditions. The Impact Univent 750 Portable2 Operation of the Uni-Vent 750 Portable Ventilator Control Module: Front panel VELA ventilator user guide Critical care ventilation Table of contents MANUAL BREATH/TRIGGER: Delivers a Manual Breath equal to one complete ventilatory cycle in A/C and. SIMV. In CPAP, the Manual Breath delivers gas at a 30 Operator's Manual, Model 754/754M. Each Uni-VentTM EagleTM Model 754M is shipped with the following components: 1 ea. Ventilator, Compressor, Air/Oxygen