Gardner Denver APEX25-30A, Руководство по эксплуатации и обслуживанию

Страница: 70 / 86

13-25-608 Page 69
Inlet Valve (Body) Inspection -
The valve does not require maintenance or lubrication. If air/oil leaks
develop across the valve disc during pressurized conditions (e.g., machine stopped), valve seals should
be inspected for wear and tear signs:
1. Be sure the unit is completely off and oil sump is depressurized.
2. Disconnect, lockout and tagout power supply to the compressor package.
3. Close (when provided) valve isolating compressor package from air system.
4. Refer to FIGURE9- 1 for hardware details.
5. Loosen and remove the air filter housing cover and remove the filter element.
6. Remove four bolts securing inlet flange to the compressor body and remove the flange.
7. Remove the poppet assembly and the poppet return spring.
8. Unscrew the valve body from the compressor housing using the hex pattern provided on the
valve body - See for Figure 9-1, details.
9. Inspect poppet seal (o-ring) (5) for wear and tear.
10. In case of noted malfunction (e.g., valve will not open/close properly with good air signal),
proceed to dismantle internal piston assembly.
a. Remove lock ring to release piston assembly.
b. Inspect the piston seal and piston return spring. If any component is found worn or damage,
replace the complete valve. CAUTION! If the unit includes the inlet valve modulation
option, the piston return spring will be different (and stronger) than the standard one. Make
sure that you have the right part number before making any substitutions.
c. Re-assemble the piston assembly in reverse order.
11. Reassemble inlet valve in reverse order.
FIGURE 9- 2 – Inlet Valve Body Hex