Before cleaning, servicing, performing maintenance, or removing the chassis from the wall sleeve, disconnect all power to the unit to avoid the possibility of electrical shock and personal injury. Only trained and qualified service personnel should perform installation and service procedures on these units. Untrained personnel may perform basic maintenance tasks such as cleaning and replacing filters. Refer to General Disassembly section of this manual for proper procedures to disconnect power to 52S units.
Consider the following safety issues before beginning:
New and unfamiliar tasks should be performed under the supervision of an experienced service technician.
Personal protective equipment, such as safety glasses and work gloves, should be used.
The floor around the work area should be clean and free of debris.
The 52S unit weighs up to 150 pounds. Use a lifting device or ask for assistance if the unit must be moved.
Make sure tools are the correct tools for the job, and that they are working properly and in good condition.
The following list includes the recommended tools, devices, and cleaning solutions for use in cleaning the 52S unit components.
Vacuum cleaner with Crevice Tool Attachment, or soft plastic bristle brush
Mild household detergent
Phillips head screwdriver
5/16-in. nut driver
Flat head screwdriver
Lifting device (or another person for assistance
Tank sprayer (Part no. P9021001) or trigger spray extension tube (Part no. P9029000)
Compressed Air Tank
Clean Water Supply
Indoor Air Filter Replacement (Part no. AIR-FILTER-25PAK)
Vent air filter replacement (Part no. 52SQ500204)
Condenser Coil Cleaning Solution (Part no. P9020501)
Evaporator Coil Cleaning Solution (Part no. P9021001)
9.5-in. by 9.5-in. Piece of Clean Cardboard
3% Solution of Hydrogen Peroxide in Spray Bottle
Clean cloth
Safety Glasses
Protective Gloves
