Inspection and Maintenance
8-34
750-91 (revised 2009)
Model CB-LE Packaged Boiler Manual
Complete renewal of grease, when necessary, can be accomplished by forcing out the old grease with the new
grease:
1. Thoroughly wipe those portions of the housing around the filler and drain plugs (above and below bearings).
2. Remove the drain plug (bottom) and free the drain hole of any hardened grease which may have accumulated.
3. With the motor not running, add new grease through the filler hole until clear grease starts to come out of the
drain hole.
4. Before replacing the drain plug, run the motor for 10 to 20 minutes to expel any excess grease.
5. The filler and drain plugs should be thoroughly cleaned before they are replaced.
The lubricant used should be clean and equal to one of the good commercial grades of grease locally available.
Some lubricants that are distributed nationally are:
8.22.2 — Control Linkage
Apply a non-gumming, dripless, high-temperature lubricant, such as graphite or a silicone derivative to all pivot
points and moving parts. Work lubricant in well and wipe away excess. Repeat application at regular intervals to
maintain freedom of motion of parts.
8.22.3 — Solenoid and Motorized Valves
Solenoid valves and motorized valves require no lubrication.
Daily
• Check visually for free movement of IFGR linkage.
Quarterly
• Manually check for free movement of IFGR linkage.
• Inspect and clean IFGR damper (oil-fueled system).
• Inspect and clean fan and burner (oil-fueled system).
• Grease fan motor.
Semi-Annually
• Inspect and clean IFGR damper (gas-fueled system).
• Inspect and clean fan and burner (gas-fueled system).
• Open motor/fan cassette to check for free movement of IFGR linkage and damper
assembly.
Annually
• Inspect fan impeller.
• Check emissions.
• Change inlet gasket.
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