Page 178 - Reciprocating Compressors Operation Maintenance

1 64 Reciprocating Compressors: Operation and Maintenance

FIGURE 3-23. Hoerbiger valve holding fixture (Source: Hoerbiger-Mitchell,
Houston, Texas).

VALVC KEEPER OR SEAT
PINS ENCAGE SLOTS

FIXTURE FOR HOLDING VALVE KEEPER
OR SCAT
FIGURE 3-24. Elementary valve holding fixture.

1. Clean all parts. Use a cleaning fluid and a soft brash, taking particu-
lar care to free the ports of the seat and the guard from all foreign
matter. This will ensure full seat area in operation. Never use wire
brushes or tools with sharp edges to clean the seats and plates.
2. Check the condition of all parts:
* seats for damage to seat lands
• damping plates for cracking
* valve guard for damage
3. Repair or replace worn parts:
• Valve plates. When a valve plate or damper plate shows signs of
wear, it must be replaced even if no breakage has occurred. Valve
plates should never be reground or inverted.