ACUNITCW-A Air Conditioning Unit Ceiling/Wall Mounted - Annual

Application:                                                Man Hours 3

This Inspection applies to ceiling or wall mounted air conditioning units, i.e.,
mini-mates.  The unit may be for comfort or special purpose cooling and can be
either air cooled or water cooled.  Humidifiers will be operated on those units
serving computer space and will be inventoried and serviced under this guide

Special Instructions:

1.  Schedule outage with operating personnel.
2.  Schedule PM on associated equipment in conjunction with this guide, i.e., air
    cooled condensers, glycol dry coolers, cooling tower, etc.
3.  Review manufacturer's instructions and the Standard Operating Procedure for
    "Controlling Hazardous Energy Sources."
4.  Deenergize, lock-out, and tag electric circuits.
5.  Comply with the latest provisions of the Clean Air Act and Environmental
    Protection Agency (EPA) regulations as they apply to protection of
    stratospheric ozone.
6.  No intentional venting of refrigerants is permitted.  During the servicing,
    maintenance, and repair of refrigeration equipment, the refrigerant must be
7.  Whenever refrigerant is added or removed from equipment, record the
    quantities on the appropriate forms.
8.  Recover, recycle, or reclaim the refrigerant as appropriate.
9.  If disposal of the equipment item is required, follow regulations concerning
    removal of refrigerants and disposal of the equipment.
10. If materials containing refrigerants are discarded, comply with EPA
    regulations as applicable.
11. Refrigerant oils to be removed for disposal must be analyzed for hazardous
    waste and handled accordingly.
12. Closely follow all safety procedures described in the
    Material Safety Data Sheet (MSDS) for the refrigerant and all labels on
    refrigerant containers.

Items to Check & Initial Completion:

1. ___ Thoroughly inspect and clean interior and exterior of machine with vacuum
       (remove panels).
2. ___ Clean drain pan and note excessive corrosion.  Correct as necessary.
3. ___ Check for refrigerant leaks using a halogen leak detector, soap bubbles,
       or similar testing device.  If leaks are not able to be stopped or
       corrected, report leak status to supervisor.  Consult the Material Safety
       Data Sheets (MSDS) for disposal requirements.  Reclaimed and recycled CFCs
       are exempt from hazardous waste regulations (Consult 40 CFR Part 261).
4. ___ Check refrigerant levels and recharge if necessary.
5. ___ Check condition of cooling and reheat coils.  Use fin comb as needed.
6. ___ Clean coils using detergent solution and warm water if coil is heavily
7. ___ Drain and clean humidifier pan or pad, whichever applies.  Replace pad if
       required.  Remove corrosion, prime, and paint as needed.
8. ___ Lubricate motor and fan bearings, if not sealed.  Check alignment of motor
       and fan.  Clean all fans or blowers.
9. ___ Check belt tension and condition.  Adjust or replace as required if belt
10.___ On direct drive units, check set screws on fan shaft to make sure they
       are tight.
11.___  Replace filters as needed.
12.___  Check compressor oil level (not on hermetically sealed
        units) if compressor is equipped with a sight glass.
13.     Run machine.  Check action of controls, relays, switches, including fused
        disconnect type, etc., to see that:
    a.___  compressor(s) run at proper setting.
    b.___  reheat coils activate properly (if applicable).
    c.___  humidistat activates humidifier (if applicable).
    d.___  suction and discharge pressures are proper.
    e.___  discharge temperature is set properly.
14.___  Clean up work area.

Tools and Materials:

1.  Standard Toolkit
    Plus  Refrigeration - gauges
          Leak detector-electronic or halogen
          Pocket thermometer
          Clamp on meter (volt - ohm - amp meter)
          Flaring tool
          Tubing cutters
          Packing kit and packing
          Crescent wrenches to 14"
2.  Cleaning tools and materials.
3.  Vacuum.
4.  Fin comb.
5.  Grease gun and oiler.
6.  Ladder - ceiling mounted units.  Check ladder for defects.  Do not use
     defective ladders.
7.  Self sealing quick disconnect refrigerant hose fittings.
8.  Refrigerant recovery/recycle unit.
9.  EPA/DOT approved refrigerant storage tanks.
10. Safety goggles.
11. Gloves.
12. Approved refrigerant.
13. Electronic leak detector.

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