CleaverBrooks CBLE, Operation And Maintenance Manual

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Inspection and Maintenance
8-14 750-91 (revised 2009)
Model CB-LE Packaged Boiler Manual
8.13 — 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. To remove the fan/motor:
1.
Disconnect and lock out electric power to the boiler.
2.
Ensure the front door is securely bolted to the boiler.
3.
Release the davit arm by removing the retaining bolt at the top center of the boiler.
4.
Connect the davit arm to the fan/motor cassette using the suspension system.
5.
Arrange the attaching chains so the lifting point is over the motor shaft centerline and the center of balance for
the fan/motor cassette. This point is approximately 4 inches from the motor backplate for 600 - 800 hp units,
and 3 inches for 250 - 500 hp units.
6.
Remove the fan/motor cassette fastening nuts.
7.
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.
Disconnect and lock out electrical power to the boiler before removing the fan/motor cassette. Failure to follow these
instructions could result in serious injury or death.
Do not remove the davit arm assembly without first ensuring that the front door is securely bolted to the boiler. Failure
to follow these instructions could result in serious injury or death.
When suspending the fan/motor cassette from the davit arm, all equipment used must be of adequate strength to
safely support the complete cassette. Failure to follow these instructions could result in serious injury or death.
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 serious injury
or death.
Be sure that the fan motor wiring and conduit are not stretched during the fan/motor cassette removal. Failure to fol-
low these instructions could result in equipment damage.
! Warning
! Warning
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Warning
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Warning
! Caution