Instruction manual

VHS-4, VHS-6 and VHS-250 Diffusion Pumps
D R A F T 6 / 1 8 / 1 3
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3.6 Jet Assembly Removal/Installation
To remove the jet assembly:
1. Remove the cold cap from the pump (Figure 3-3).
2. Unscrew the top cap from the jet assembly.
3. Lift out each section of the jet assembly, being careful not to dent or otherwise damage
the jet assembly during disassembly or cleaning.
4. Remove the splash baffle from the pump.
To install the jet assembly:
1. Place the splash baffle in the bottom of the pump and verify that it is located in the outer
boiler groove.
2. Insert the jet base, making sure the ejector is aligned with the foreline and that the slot in
the jet base locks onto the alignment pin.
3. Assemble the remaining stages of the jet.
❑ Verify that all the stages are firmly seated.
❑ Verify that all the drip shields are in place.
4. Install the cold cap assembly.