The task of any service or maintenance should not be done by the users as it is a risky job. This article is designed to help a qualified service agency to perform the maintenance on UPPER DOOR Coleman DGAA.
Rules to follow before starting-
- Cut the power off the electrical furnace.
- Label the wires before the disconnection correctly so that you can connect them in the proper place, once the servicing is done.
- Operate carefully while servicing.
Maintenance of the furnace
A certified dealer or a qualified service contractor must clean the furnace every year, before the start of the summer season. Replace the following items or get the service if you notice any signs of deterioration.
- The roof cap.
- The vent pipe of the furnace. This operation of reassembling and resealing the vent/air intake system is quite complex. That is why it is advisable to be performed by an expert.
- The furnace flame sensor, ignitor, and burner.
Cleaning of the furnace
- The very first step is to clean the burner. This has to be done by switching off the electrical unit first. Also, switch off the gas supply at the external manual shut-off valve. Loosen the ground union joint properly.
- Then remove the upper case panel and disconnect all the wires from the rollout switch, HIS ignite and flame sensor carefully. Remove the ignite also.
- Unscrew the screws of the burner assembly and rinse the burner in hot water.
- Continue the process of reassembling in reverse order.
The task of removing the burner assembly from the combustion air box should be done with the help of replacement gaskets. Make sure that all the electrical switches are turned off as there are high chances of you getting badly shocked. If you need assistance with the cleaning and maintenance of the furnace, Coleman will be at your service.
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