Liebert himod - Semi-Annual Maintenance Inspection Checklist

Semi-Annual Maintenance Inspection Checklist 63
9.0 SEMI-ANNUAL MAINTENANCE INSPECTION CHECKLIST
Notes:
Signature:___________________________________________________________________
Make photocopies of this form for your records
Date:_______________________________________ Prepared by:_________________________________
Model #:_____________________________________ Serial #:____________________________________
Filters
___ 1. Restricted air flow
___ 2. Check filter switch
___ 3. Wipe section clean
___ 4. T-strips in place
Blower Section
___ 1. Impellers free of debris and move freely
___ 2. Bearings in good condition
___ 3. Inspect & tighten electrical connections
Compressor
___ 1. Check for leaks
___ 2. Inspect & tighten electrical connections
Air Cooled Condenser (if applicable)
___ 1. Condenser coil clean
___ 2. Motor mounts tight
___ 3. Bearings in good condition
___ 4. Refrigerant lines properly supported
___ 5. Inspect & tighten electrical connections
Glycol Condenser (if applicable)
___ 1. Copper tube clean
___ 2. Water regulating valves function
___ 3. Glycol solution
___ 4. Check for water/glycol leaks
Glycol Pump
___ 1. Glycol leaks
___ 2. Pump operation
___ 3. Inspect & tighten electrical connections
Steam Generating Humidifier
___ 1. Check canister for deposits
___ 2. Check condition of steam hoses
___ 3. Check water make-up valve for leaks
___ 4. Inspect & tighten electrical connections
Refrigeration Cycle/Section
___ 1. Check refrigerant lines
___ 2. Check for moisture (sight glass) (air cooled
only)
___ 3. Check suction pressure
___ 4. Check head pressure
___ 5. Check discharge pressure
___ 6. Check hot gas bypass valve
___ 7. Check thermostatic exp. valve
Air Distribution Section
___ 1. Restriction in grille free area
Refrigerant Charge
___ 1. Check refrigerant level (air cooled only)
___ 2. Check subcooling (≤5°F)
___ 3. Check superheat (20-35°F) on glycol units
Electrical Panel
___ 1. Check fuses
___ 2. Inspect & tighten electrical connections
___ 3. Check operation sequence
___ 4. Check contactor operation
Reheat
___ 1. Check reheat element operation
___ 2. Inspect elements for cleanliness
___ 3. Inspect & tighten electrical connections