HP Designjet H-Series and HP Scitex FB950 Printer - Troubleshooting vacuum issues

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Table 1 Vacuum system part numbers
Common
name
Part number Used in Note Image (not to scale)
Vacuum
pump
CH104-67002
FRM,N,PUMP,PRESSURE
All models
Exactly the
same as the
pressure pump
Pressure
pump
CH104-67002
FRM,N,PUMP,PRESSURE
All models
Exactly the
same as the
vacuum pump
External
'bottle' filter
CH108-60004
FRM,AIR_FLTR,LARGE_V
OL,L
Newer H-
series and
FB950
Complete
Assembly
CH971-91543
FRM,VAC_ASSY,N
All models
Backwards
compatible to
older H-series
Auxiliary
power
adapter
CH971-91083
FRM,AUX_VP_PWR,ABCD
HIJ,ROHS
All models
Luer cap for
printhead
reservoirs
CH971-91589
FRM,PRINTHEAD_CAP,
N
All models
Note
incompatibility
issue with Luer
retention
clamp CH154-
67045
Luer cap for
tubes
CH971-91590
FRM,TUBE_CAP,N
All models
Dual air tube
CH104-67020 FRM,LIQUID
BLOCKER,NQ
All models See Figure 3
Valve &
manifold
assembly
CH971-91491
FRM,ASSY,MANIFOLD,VA
LVES,N
All models See Figure 6