Condec UPS3210 - Manual (Page 34)

30 UPS3000/UPS3110/UPS3210 Operation and Maintenance Manual
4.2.3 ORION Manifold - Valve Seat Removal
ORION 2C: Refer to “ORION 2C Valve Assembly Parts List” on page 45 and Figure 4-1 on the following
foldout 11 x 17 sheet.
ORION 3A: Refer to “ORION 3A Valve Assembly Parts List” on page 47 and Figure 4-2 on the second foldout
11 x 17 sheet.
Tools required: A/R solvent (de-natured alcohol)
Torque wrench
Socket wrench
Needle-nose pliers
3/4" Socket
Tube fluorinated Krytox
® grease (PN 55593)
Needle housing socket (65580)
Electric hand drill
Isolation valve needle housing socket (PN 68509)
Tap handle
Hex wrench (.050")
No. 43 drill bit
Hex wrench (.061")
No. 4-40 tap
Small hammer
Socket wrench
1. Secure the manifold by its center portion, in a bench vise, 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. Using the .050" hex wrench, loosen and remove the setscrew (34) and lock nut (2).
4. Loosen the 3/4" locknuts (1) on the pressure and vent valve threaded needle housings (10).
5. Using the needle housing socket (65580) and torque wrench, loosen and remove the needle/housing
assembly (10, 1).
6. To disassemble the isolation valve, first remove the valve needle (18) by turning the gear clockwise.
7. Loosen and remove the valve housings (19) using the isolation valve needle housing removal socket
(68509) and socket wrench.
8. Remove the valve stem seats (8) and valve needle seats (9) using the needle-nose pliers.
9. 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).
10. To remove valve seats (7) from either the input (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 11-14).
11. Using the electric hand drill with the 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.
12. Blow out any chips from the seat area using compressed air.
13. While holding the 4-40 tap steady and perpendicular to the seat, slowly turn until the tap starts to engage
the seat.
14. When the tap has engaged into the seat, use a small hammer and gently knock upward against the tap
handle to extract the seat.
15. After the seat has been removed, blow any remaining chips from the seat area.