NOTE: Ensure that the combustion source is off and is cool, and the economizer is cool before attempting to inspect or clean the fin coil(s).
The following is the procedure for opening and closing large doors on CRE units. NOTE: it may be necessary to provide a means of supporting the weight of the door.
*The adjusting bolt feature is not incorporated on the smaller hinged doors.
NOTE: Often there is sufficient draft at the stack above the exchanger which can blow the soot off the fins and carry it out the stack.
Source: Cleaver Brooks