Condec UPC5010 - Manual (Page 20)

Maintenance and Service 17
4.2.5 ORION-2C Manifold, Valve Seat Removal
Tools required: A/R solvent (de-natured alcohol)
socket wrench
3/4" socket
needle housing socket (PN 65580)
isolation valve needle housing socket (PN 68509)
hex wrench (.050")
hex wrench (.061")
needle-nose pliers
tube fluorinated Krytox grease (PN 55593)
electric hand drill
No. 43 drill bit
No. 4-40 tap
tap handle
small hammer
NOTE: See Table 4-7 on page 32 and Figure 4-1 on page 33 for additional parts information.
1. Use a bench vise to secure the manifold by its center portion, with the valve knobs pointing upward.
2. Using the .061" hex wrench, loosen and remove the knob inserts (4) from the pressure and vent valve
stems.
3. Loosen the 3/4" locknuts (1) on the COARSE (pressure) and VENT valve threaded needle housings (10).
4. Using the needle housing socket (65580) and socket wrench, loosen and remove the needle/housing
assembly (10, 11).
5. To disassemble the isolation valves (two inner valves), first remove the valve needle (18) by turning the
gear (6) clockwise.
6. Loosen and remove the valve housings (19) using the isolation valve housing removal socket (68509)
and socket wrench.
7. Remove the valve stem seats (8) and valve needle seats (9) using the needle-nose pliers.
8. Remove the inner and outer O-rings (28, 27) and back-up rings (31, 30) from the valve stem seats and
wash all parts in solvent (de-natured alcohol).
9. To remove valve seats (7) from either the COARSE (pressure), VENT , or ISOLATION valves, try blowing
compressed air through the inlet and outlet fittings. Otherwise, the center holes will have to be drilled
and a tap used to extract the seat (Steps 10-13).
10. Using the electric hand drill with a No. 43 bit, carefully drill out the seat hole, ensuring that the drill does
not touch the hole in the manifold housing directly beneath the seat.
11. Blow out any chips from the seat area using compressed air.
12. While holding the 4-40 tap steady and perpendicular to the seat, slowly turn until the tap starts to engage
the seat.
13. When the tap has engaged into the seat, use a small hammer and gently knock upward against the tap
handle to extract the seat.
14. After the seat has been removed, blow any remaining chips from the seat area.
4.2.6 ORION-2C Manifold, Vernier Control Disassembly
Tools required: A/R solvent (de-natured alcohol)
1-1/4" open end wrench
screwdriver (flat-blade)
socket wrench
isolation valve needle housing socket (PN 68509)
NOTE: See Table 4-7 on page 32 and Figure 4-1 on page 33 for additional parts information.
1. With the manifold housing mounted in a vise, turn the vernier shaft (14) clockwise until the piston is
bottomed.
2. Loosen and remove the end cap (13) using a 1-1/4" wrench. At certain points during removal the end cap
will appear to lock up. If this occurs, rotate the shaft (14) clockwise until the end cap is free to turn.
3. Remove the O-ring (29) from the end cap.