User manual

HVAC Maintenance Checklist
Liebert
®
DS
™
152
14.0 HVAC MAINTENANCE CHECKLIST
Filters
___ 1. Check/replace filters
___ 2. Grille area unrestricted
___ 3. Wipe section clean
___ 4. Coil clean
Blower Section
___ 1. Blower wheels free of debris
___ 2. Check belt tension and condition on centrifugal fans (replace if needed)
___ 3. Check/lube bearings
___ 4. Check sheave/pulley on centrifugal fans (replace if worn)
___ 5. Check motor mount
___ 6. Motor amp draw L1__________________ L2 __________________ L3______________
____ Compare to nameplate amps
Reheat
___ 1. Inspect elements
___ 2. Check wire connections (inside reheat box)
___ 3. Reheat amp draw
___ a. #1
___ a. #2
___ a. #3
Steam Generating Humidifier
___ 1. Check drain valve/drain lines/trap for clogs
___ 2. Check water make-up valve and all hoses for leaks
___ 3. Clean the fill strainer
___ 4. Replace humidifier bottle if necessary
___ 5. Check operation of humidifier
___ 6. Humidifier amp draw L1 ______________ L2 _______________L3__________________
Infrared Humidifier
___ 1. Check drain lines and trap for clogs
___ 2. Check/clean pan for mineral deposits
___ 3. Clean reflector
___ 4. Check water make-up valve for leaks
___ 5. Check humidifier lamps (replace if burnt out)
___ 6. Check wire connections (inside humidifier box)
___ 7. Humidifier amp draw L1 ______________ L2 _______________L3__________________
Inspection Date Job Name
Indoor Unit Model # Indoor Unit Serial Number #
Condenser/Drycooler Model # Condenser/Drycooler Serial #
Room Temperature/Humidity ° % Ambient Temperature °