Preventive Maintenance Checklist: AC SPLIT SYSTEM, EVAPORATOR - Annual

• Site conducted

• Conducted on

  Date

• Prepared by

• Location

• Work Order Number

(T)ools, (S)afety Equipment and (M)aterials

• Mechanic's tool set

  Yes

  No

  N/A

• Megger

  Yes

  No

  N/A

• Clamp-on amp meter

  Yes

  No

  N/A

• Cleaning materials and equipment

  Yes

  No

  N/A

• Oiler

  Yes

  No

  N/A

• Lubricants

  Yes

  No

  N/A

• Coil cleaner

  Yes

  No

  N/A

• Fin comb

  Yes

  No

  N/A

• Vacuum

  Yes

  No

  N/A

• Ladder

  Yes

  No

  N/A

• Filter replacement

  Yes

  No

  N/A

• Biocide strips

  Yes

  No

  N/A

Safety Guidelines

• Follow site safety rules for lockout and tagout

  Yes

  No

  N/A

• Schedule outage with operating staff

  Yes

  No

  N/A

• Be very careful when climbing access ladders

  Yes

  No

  N/A

• Perform proper lockout/tagout steps of site safety rules

  Yes

  No

  N/A

• Don't leave fingerprints on ceiling tiles

  Yes

  No

  N/A

• Thoroughly clean working spaces

  Yes

  No

  N/A

• Review and follow the manufacturer's O and M instructions

  Yes

  No

  N/A

• Report any problems you find

  Yes

  No

  N/A

• Record the results in the maintenance log

  Yes

  No

  N/A

Maintenance Procedures

General:

• Casing:

• Cover all exposed surfaces below the evaporator

  Yes

  No

  N/A

• Carefully remove access panels, covers, or ceiling tiles to gain access to the equipment

  Yes

  No

  N/A

• Casing:

• Clean the exterior and interior of the unit casing

  Yes

  No

  N/A

• Remove rust and corrosion. Apply corrosion protection

  Yes

  No

  N/A

• Carefully inspect all fasteners to ensure integrity and replace any which have rusted. All replacement components, parts, and materials should be of rust resistant manufacture

  Yes

  No

  N/A

• Check belts and alignment, if applicable

  Yes

  No

  N/A

• Inspect air side and condensate removal components:

  Yes

  No

  N/A

• Inspect and clean coils by vacuuming or brushing. Use coil cleaner if excessively dirty

  Yes

  No

  N/A

• Use fin comb to straighten coil fins where necessary

  Yes

  No

  N/A

• Inspect and clean washable filters if dirty. Recharge wire mesh filters with oil when applicable

  Yes

  No

  N/A

• Inspect and replace disposable filters if dirty

  Yes

  No

  N/A

• Drain and clean condensate pan. Check condensate lines for free flow

  Yes

  No

  N/A

• Replace biocide strips

  Yes

  No

  N/A

• Fix damaged or missing insulation on the cooling lines using "Armaflex" and/or no-drip tape

  Yes

  No

  N/A

• Clean strainers

  Yes

  No

  N/A

• Check controls, trap, freeze-stat, and control-stat for proper operation

  Yes

  No

  N/A

• Service condensate pumps if equipped

  Yes

  No

  N/A

• Clean and test motors and fans:

  Yes

  No

  N/A

• Check ventilation ports for soil accumulation, clean if necessary

  Yes

  No

  N/A

• Clean exterior of motor surfaces of soil accumulation

  Yes

  No

  N/A

• Clean fan blades and check for damage

  Yes

  No

  N/A

• Check belts and alignment, if applicable

  Yes

  No

  N/A

• Lubricate motor bearings where required. Check manufacturer's information for requirements

  Yes

  No

  N/A

• Check motor windings for accumulation of soil. Vacuum if required

  Yes

  No

  N/A

• Check hold down bolts and grounding straps for tightness

  Yes

  No

  N/A

• Check electrical connections for tightness

  Yes

  No

  N/A

• Meggar motors 5 horsepower or greater

  Yes

  No

  N/A

• Return to service and perform an operational test

  Yes

  No

  N/A

• Test in heating and cooling modes

  Yes

  No

  N/A

• Check unit sensors and calibrate if required. Record calibration values

  Yes

  No

  N/A

• Check unit for noise, vibration or condensate leakage

  Yes

  No

  N/A

• Check for refrigeration leaks. Submit a work order to repair any leaks found

  Yes

  No

  N/A

• Measure running current for all motors 5 horsepower or greater

  Yes

  No

  N/A

• Clean area around equipment

  Yes

  No

  N/A

Maintenance Hours

• Time spent on work order?