Liebert 50 & 60Hz User Manual
Maintenance Inspection Checklist
57
7.0
M
AINTENANCE
I
NSPECTION
C
HECKLIST
JOB NAME: ______________________________
ROOM TEMP/HUM: ______________________________
SERIAL: ______________________________
DATE: ______________________________
UNIT MODEL: ______________________________
COND. MODEL: ______________________________
FILTERS
___ 1. Check/Replace Filters
___ 2. Check Filter Switch
___ 3. Wipe Section Clean
___ 2. Check Filter Switch
___ 3. Wipe Section Clean
BLOWER SECTION
___ 1. Impellers Free of Debris & Spins Freely
___ 2. Check Belt Tension and Condition
___ 3. Check/Lube Bearings
___ 4. Check Pulleys and Motor Mounts
___ 5. Amp Draw ____ / ____ / ____
___ 2. Check Belt Tension and Condition
___ 3. Check/Lube Bearings
___ 4. Check Pulleys and Motor Mounts
___ 5. Amp Draw ____ / ____ / ____
REHEAT
___ 1. Amp Draw ____ / ____ / ____
___ 2. Inspect elements for cleanliness
___ 2. Inspect elements for cleanliness
HUMIDIFIER
___ 1. Check for Clogs
___ 2. Check Humidifier Lamps/tank
___ 3. Check for Mineral Deposits
___ 4. Check Water Make-Up Valve for Leaks
___ 5. Check Drain & Trap for Debris
___ 6. Check Amp Draw ____ / ____ / ____
___ 2. Check Humidifier Lamps/tank
___ 3. Check for Mineral Deposits
___ 4. Check Water Make-Up Valve for Leaks
___ 5. Check Drain & Trap for Debris
___ 6. Check Amp Draw ____ / ____ / ____
REFRIGERATION CYCLE/SECTION
___ 1. Check Refrigerant Lines (rubbing)
___ 2. Suction Pressure 1.______ 2._______
___ 3. Discharge Pressure 1.______ 2.______
___ 4. Check Thermostatic Expansion Valve
___ 5. Check Superheat 1.______ 2.______
___ 6. Check Refrigerant Level (Site Glass)
___ 2. Suction Pressure 1.______ 2._______
___ 3. Discharge Pressure 1.______ 2.______
___ 4. Check Thermostatic Expansion Valve
___ 5. Check Superheat 1.______ 2.______
___ 6. Check Refrigerant Level (Site Glass)
ELECTRICAL PANEL
___ 1. Check Fuses
___ 2. Check Electrical Connections
___ 3. Check Operation Sequence
___ 4. Check Contactors for Pitting
___ 2. Check Electrical Connections
___ 3. Check Operation Sequence
___ 4. Check Contactors for Pitting
COMPRESSOR
___ 1. Amp Draw 1. ____ / ____ / ____
___ 2. Amp Draw 2. ____ / ____ / ____
___ 3. Check For Leaks/Oil Level
___ 4. Vibration
___ 5. Noise
___ 6. Cap Tubes (Not Rubbing)
___ 2. Amp Draw 2. ____ / ____ / ____
___ 3. Check For Leaks/Oil Level
___ 4. Vibration
___ 5. Noise
___ 6. Cap Tubes (Not Rubbing)
CONTROLS
___ 1. Check/Test Changeover Panel
___ 2. Check/Test Water Detection
___ 3. Check/Test Condensate Pump
___ 2. Check/Test Water Detection
___ 3. Check/Test Condensate Pump
Operation
___ 4. Check/Verify Control Settings
AIR-COOLED CONDENSER/
DRYCOOLER
___ 1. Coil Clean
___ 2. Motor Mounts Tight
___ 3. Bearings in Good Condition
___ 4. Piping in Good Condition
___ 5. Ambient Settings ____ / ____ / ____
___ 6. Motor Amp Draws ____ / ____ / ____
___ 7. Check Electrical Connections
___ 8. Refrigerant/Glycol Level ______
___ 9. Cap. Tubes (Not Rubbing)
___ 2. Motor Mounts Tight
___ 3. Bearings in Good Condition
___ 4. Piping in Good Condition
___ 5. Ambient Settings ____ / ____ / ____
___ 6. Motor Amp Draws ____ / ____ / ____
___ 7. Check Electrical Connections
___ 8. Refrigerant/Glycol Level ______
___ 9. Cap. Tubes (Not Rubbing)
WATER/GLYCOL CONDENSER
___ 1. Copper Tube Clean
___ 2. Water Regulating Valve Functions
___ 3. Glycol Solution
___ 4. Check for Water/Glycol Leaks
___ 2. Water Regulating Valve Functions
___ 3. Glycol Solution
___ 4. Check for Water/Glycol Leaks
GLYCOL PUMP
___ 1. Pump Rotation
___ 2. Glycol Leaks
___ 3. Pump Operation
___ 4. Amp Draw ____ / ____ / ____
___ 5. Pump Changeover (If Dual)
___ 2. Glycol Leaks
___ 3. Pump Operation
___ 4. Amp Draw ____ / ____ / ____
___ 5. Pump Changeover (If Dual)
COMMENTS
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