Inspection and Maintenance
8-22
750-91 (revised 2009)
Model CB-LE Packaged Boiler Manual
5. Be sure to fit an O-ring gasket under the cover so that a tight seal is obtained.
FIGURE 8-8. Air Oil Receiver Tank
8.19.6 — Lube Oil Cooling Coil
The fins on the tubing must be kept clean and free of any dust or dirt that would resist air flow and cause overheat-
ing. Use an air hose to blow away debris. Internal cleaning of the tubes is seldom required if a good quality lube oil
is used.
8.19.7 — Flexible Coupling Alignment
Alignment of the pump and motor through the flexible coupling is extremely important for trouble free operation.
Check the coupling alignment semi-annually and replace the coupling insert as required. Keep the coupling guard
in place.
The most commonly used tools for checking alignment are a small straightedge and a thickness gauge.
The coupling must be checked for both parallel (offset) alignment and angular (gap) alignment. Parallel misalign-
ment exists when shaft axes are parallel but not concentric. Angular misalignment is the reverse situation — shaft
axes concentric, but not parallel.
Checking parallel alignment, both horizontal and vertical can be accomplished, by laying a straightedge across the
coupling halves and checking with a thickness gauge to obtain the amount of misalignment. The check should be
done on the top of the coupling and at 90 degrees. A useful practice is to hold a flashlight behind the straightedge
so that any gap can readily be seen.
To Next Page
Loading...
Need help?
General
