Removing The Rotary Valve Assembly - Getinge Arjohuntleigh NIMBUS II Service Manual

Nimbus/DFS Service Manual
18

Removing the Rotary Valve Assembly

Note: The Rotary Valve Assembly shown in Figure is from a Nimbus 2/DFS 2 pump. The procedure
for a Nimbus 3/DFS 3 pump is identical to that detailed below, the only difference being the
Rotary Valve Assembly in a Nimbus 3/DFS3 pump is larger in size.
18.1 Disassemble the Rear Case (Refer to Chapter 3, Page 5, Section 4).
18.2 Using a small flat head screwdriver, carefully prise the hoses off the rotary valve assembly at
connections A, B and C.
18.3 Disconnect the microswitch and timer cables from the PCB display board.
18.4 Carefully remove the cable tie (Fig 10, Item 50) holding the three cables.
18.5 Remove the screws (Fig 10, Item 20), the washers (Fig 10, Item 30) and the earth wire from the
rotary valve assembly (Fig 10, Item 10).
18.6 Remove the rotary valve assembly (Fig 10, Item 10) from the pump case.
18.7 If the pillars (Fig 10, Item 40) are damaged then replace as necessary.
Issue 2
April 2010
Figure 10 - Replacing the Rotor Assembly
SER0001
Pump Repair
Chap 3
Page 19