Swagelok PRS4, Руководство пользователя

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14
Disassembly
- The following instructions describe how to fully disassemble the regulator for the purposes of
maintenance and repair.
- Note that not all components listed appear in all regulator configurations.
- Only disassemble the regulator as far as is required to replace the components supplied in the
maintenance kit.
- Discard all components being replaced.
1. Ensure the knob assembly (20) is backed out and not acting on the set spring (15). For PRS8 series
regulators it can be fully removed, if required, by unwinding counterclockwise until it detaches from the
spring housing (18).
2. Loosen the spring housing (18).
3. Remove the spring guide (16) and set spring (15).
4. Remove the clamp ring (14), diaphragm assembly, and diaphragm O-ring (2).
5. To remove the diaphragm (10) unscrew the diaphragm screw (9) from the bottom spring guide (11).
6a. PRS4 series: Remove the seat retainer (8) using the seat retainer insertion tool. Remove the seat (7),
seat O-ring (6), poppet (5), and poppet spring (3) from the body (1).
6b. PRS8 series: Remove the seat retainer (8). Remove the seat (7), seat O-ring (6), poppet (5), and poppet
spring (3) from the body (1). Remove the poppet O-ring (4) from the poppet (5).
7. PRS4 series: To remove the knob assembly (20) remove the C-ring (19) then fully unwind the knob from
the spring housing (18).
Points of Attention Before Reassembly
- Visually inspect all components for abnormal wear or damage. Replace components in case of doubt.
- All parts must remain clean and undamaged before starting assembly.
- Maintenance kit components will be supplied preassembled where practicable to aid reassembly.
- Swagelok recommends replacing all O-rings removed during disassembly.
- Swagelok recommends that dynamic O-rings should be lightly lubricated per Table 2.
NOTICE
All threaded components must be lightly lubricated per Table 2 before reassembly to avoid
galling of threads.