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Condenser
c
Clean coils.
c
Fans are free of debris.
c
Fans are security mounted.
Motor bearings are in good condition.
c
c
Check all refrigerant lines for vibration isolation. Support as necessary.
Check for refrigerant leaks.
c
c
Check the status indicator lights of surge protection device (if installed).
Check/re-torque wire connections.
c
c
Check contactors for pitting. Replace if pitted.
c
Verify the operation sequence/set points.
c
Charge verification:
a. Outdoor ambient temperature ____________________
b. Subcooling __________________
c. Indoor unit return air temperature ________________
d. Sight glass level (if Lee-Temp or pumped refrigerant) __________________
c
Motor amp draw
#1 L1 _______________ L2 ______________ L3 _______________
#2 L1 _______________ L2 ______________ L3 _______________
#3 L1 _______________ L2 ______________ L3 _______________
#4 L1 _______________ L2 ______________ L3 _______________
#5 L1 _______________ L2 ______________ L3 _______________
#6 L1 _______________ L2 ______________ L3 _______________
#7 L1 _______________ L2 ______________ L3 _______________
#8 L1 _______________ L2 ______________ L3 _______________
#9 L1 _______________ L2 ______________ L3 _______________
#10 L1 _______________ L2 ______________ L3 _______________
#11 L1 _______________ L2 ______________ L3 _______________
#12 L1 _______________ L2 ______________ L3 _______________
Pumped Refrigerant Economizer
c
Check for refrigerant leaks.
Check/re-torque wire connections.
c
c
Check contactors for pitting. Replace if pitted.
Check pump mounting.
c
9 Preventive Maintenance Checklist
61
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