Chapter 8 — Inspection and Maintenance
Part No. 750-184 8-13
M. CB-LE FAN/MOTOR CASSETTE REMOVAL
Before the boiler is commissioned at the job site, the IFGR system should
be visually inspected. The fan/motor cassette should be removed to expose
the internal IFGR linkage and damper. Remove the fan/motor cassette as
follows:
Disconnect and lock out electrical power to the boiler before
removing the fan/motor cassette. Failure to follow these
instructions can result in electrical shock and serious
personal injury or death.
1. Disconnect and lock out electric power to the boiler.
Chains or other devices used to attach a lifting device to the
fan/motor cassette must be arranged so the cassette does
not rotate or tilt when removed from the front head. Failure
to follow these instructions could result in damage to the
equipment.
2. Remove the fan/motor cassette fastening nuts.
Be sure that the fan motor wiring and conduit are not
stretched during the fan/motor cassette removal. Failure to
follow these instructions can result in damage to the equip-
ment.
3. Swing the fan/motor cassette to the side and secure it to the boiler using
high strength cord. Do not over extend the motor wires.
N. CB-LE INSPECTION AND ADJUSTMENT
NOx levels should be checked periodically to ensure compliance with all
local and federal regulations, as well as to ensure that the boiler is operating
at maximum efficiency. Linkages should be inspected and free movement
(no binding) of the IFGR damper confirmed.
Increasing or decreasing NOx levels could indicate incorrect damper
positioning, loose linkages, an improper air-to-fuel ratio, or stack draft
changes. If adjustment is required, or if problems persist, contact your local
Cleaver-Brooks authorized representative for further assistance.
As ash and products of combustion pass through the IFGR damper, there
will be some accumulation on the damper, windbox, and other parts of the
IFGR system and burner.
To ensure proper operation of the IFGR system and burner, inspection and
cleaning should be performed at regular intervals depending on the load,
type of fuel, and combustion temperatures.
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