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E-Coated Coil Cleaning ............................................................................................................ 47
Recommended Coil Cleaner .................................................................................................. 48
Recommended Chloride Remover ......................................................................................... 48
Evaporative-Cooled Condenser ................................................................................................. 48
Severe Service ....................................................................................................................... 49
Safety ..................................................................................................................................... 49
Performance ........................................................................................................................... 50
Warranties .............................................................................................................................. 50
Condenser Tube Inspection ................................................................................................... 50
Freeze Protection ................................................................................................................... 50
Recirculating Water System .................................................................................................. 50
Startup .................................................................................................................................... 50
Cleanliness ............................................................................................................................. 50
Storage ................................................................................................................................... 50
Pump Operation ..................................................................................................................... 51
Running.................................................................................................................................. 51
Condenser Fan Motors ........................................................................................................... 51
Water Make Up Valve ........................................................................................................... 51
Water Treatment System ....................................................................................................... 52
Sequence of Operation for LL Series units without Diagnostics .......................................... 53
Sequence of Operation for LL Series units with Diagnostics ................................................ 53
Pump Maintenance ................................................................................................................ 54
Fan Motor Maintenance ......................................................................................................... 54
Access Doors ......................................................................................................................... 54
Bearings - Lubrication ........................................................................................................... 54
Recommended Monthly Inspection ....................................................................................... 54
Mist Eliminators .................................................................................................................... 55
Air Inlet .................................................................................................................................. 55
Stainless Steel Base Pan ........................................................................................................ 55
Propeller Fans and Motors ..................................................................................................... 55
Recommended Annual Inspection ......................................................................................... 55
Cleaning ................................................................................................................................. 55
Water Quality ......................................................................................................................... 55
Mechanical Cleaning ............................................................................................................. 56
Service ....................................................................................................................................... 56
Replacement Parts ..................................................................................................................... 57
AAON Warranty, Service and Parts Department ...................................................................... 57
Appendix - Water Piping Component Information ...................................................................... 58
Water Pressure Reducing Valve ................................................................................................ 58
Water Pressure Relief Valve ..................................................................................................... 60
Automatic Air Vent Valves ....................................................................................................... 60
Pumps - Installation and Operating Instructions ....................................................................... 62
Pump Piping - General .............................................................................................................. 64
Pump Operation ......................................................................................................................... 64
General Care .............................................................................................................................. 65
Dual Pump Specific Information ............................................................................................... 67
