Negative Pressure Suction Device Installation and Disassembly
3 - 6 Operator’s Manual of Anesthesia System
2. Insert the suction tube to the overfill protection connector. The negative pressure suction 
device is now fully installed.
Figure 3-3 Install the negative pressure suction device
NOTE:  When installing the filter to the suction tube, pay attention to keeping 
the side printed with IN facing the liquid collection bottle.
NOTE:  Avoid twisting or bending suction tubes during use. 
3. To disassemble the negative pressure suction device, pull out the suction tube, take out the 
liquid collection bottle and discard the filter. To replace the filter, please follow local regulations 
to dispose of discarded filters.
3.5.1 Turn on Negative Pressure Suction Device
1. Assemble the negative pressure suction device.
2. Occlude the suction tube inlet at the patient end.
3. Turn on the negative pressure pipeline supply.
4. Set the selector switch to REG.
5. Adjust the negative pressure regulating knob to keep the pressure gauge reading smaller 
than -40kPa.
3.5.2 Turn off Negative Pressure Suction Device
Set the selector switch to OFF to turn off the negative pressure suction device.
WARNING:  Keep the negative pressure suction switch in the OFF state when the 
negative pressure suction device is not in use.
Filter
 Suction tube
 Overfill protection connector
Liquid collection bottle