Purpose of "Supply Pump Assy" in CJV150 (Seen in Mechanical Drawing Rev 3.6)

[Marcos Duque]

Hello, my name is Marcos, and I’m not a native English speaker.
I have a CJV150 printer, and I noticed that the "Supply Pump Assy" is shown in the mechanical drawing Rev 3.6. However, I am unsure about its exact purpose. Could anyone explain what this component does in the printer?
Any clarification would be very helpful. Thank you!

 

[Smoke_Jaguar]

This is used when white ink is in the system to keep it mixed.

 

[hybriddesign]

Yup, as Smoke Jaguar mentioned it's only used if you have white ink installed. If you don't it doesn't do anything.

 

[Marcos Duque]

Got it! I bought my CJV150 used, and it’s set to CMYK by default, which I’ve been using. After replacing the dampers, I noticed there are two extra connectors that go to the back of the printer. I thought they might be used for some procedure related to damper refilling or charging.

 

[Smoke_Jaguar]

They are also to recirculate the white ink, and pretty common to see 4-color setups on these. Very capable and quick in dual CMYK mode. Moreso if you have a CJV/JV300 with the dual heads.