Datex-Ohmeda Anesthesia Delivery Unit S/5 Technical Reference Manual page 67

Step 6: Replacing the o-rings on the Bellows Block connectors
Spare parts: O-ring for Patient Circuit connector, 65374 (1)
Replace both O-rings with new ones supplied in the kit. Coat the new O-rings with a thin layer of PTFE
based lubricant. See the figure below.
Step 7: Replacing o-ring and membrane in the Bellows Unit overflow valve
Spare parts: Overflow valve membrane 889112 (Item 4)
1. Remove the valve cap (5).
2. Replace old membrane (4) with the new one in the kit
NOTE: Do not apply any lubricant on the membrane.
3. Replace O-ring (3) with the new one in the kit. Apply a thin layer of PTFE based lubricant to the
O-ring and replace valve cap (5)
.
5
3
4
Figure 8
Document No. 8502852
O-ring for Manual Bag connector, 656507 (2)
located inside the connector
Overflow valve o-ring 656498 (Item 3)
O-rings and membrane in the Bellows block
1
2
Maintenance
5-9