Instructions for use (See user’s manual) Legal manufacturer Maquet Critical Care AB Other products (See separate data sheets— contact your Maquet Sales Representative for more information) General Specifications General Ventilator Specifications Specifications SERVO-n SERVO-n on mobile cart Base system weight. Approx. 50 lb 11 oz (23 kg).
Maquet Servo S Service Manual
The Servo Ventilator 900 was orginally manufactured and sold by Siemens. Please note that this Service Manual has only been re-labeled from Siemens to Maquet. No further significant changes are made. Thus, some information in the Service Manual may be outdated. Introduction ... 4 Principle diagram ... 6 Pneumatic unit Gas flow through the Ventilator ... 8 Gas supply ... 9 Bellows and spring assembly ... . 10 Gas supply unit ... . 11 O2cell ... 12 Relief/safety valve and working pressure manometer ... . 1 2 Flow transducer ... 14 Pressure transducer ... . 15 Inspiratory valve and step motor ... . 16 Expiratory valve and pull magnet ... . 17 Non-return valve ... 17 Transducer interface ... . 18 Electronic unit Principle of operation ... 19 Reference level generation ... 2 0 Regulation of inspiration ... . 23 Timing ... 28 Monitoring ... 33 Regulation of expiration ... 39 Voltage supply ... . 41 Input/output ... . 42 Disassembling Disassembling the pneumatic unit ... . 4 4 Disassembling the electronic unit. ... 44 Replacement of step motor assembly and pull magnet ... 45 Replacement of power supply unit ... . 4 5 Replacement of safety catches ... 45 Replacement of flow transducer ... . 46 Adjustments Adjustment of meters Z1 and Z2 ... . 4 6 Adjustment of valve arm ... . 46 Replacement and adjustment of R5 ... . 47 Removing the front panel knobs ... . 47 Front panel potentiometer adjustments ... . 48 Troubleshooting ... . 49 Index ... . 52 Block diagram ... 56