ACUNITPU-A Air-Conditioning Machine, Package Unit - Annual

                                           Under 10 Tons Man Hours 3
                                            Over 10 Tons Man Hours 6

This PM guide applies to units that may have the evaporator, compressor, fan unit
components, and condenser within a single housing or may have the condenser
separate from the housing.  If the condenser is separate, perform the PM on the
condensing unit using PM AIRCLCOND-A at the same time.

Special Instructions:

1.  Review manufacturer's instructions.
2.  Deenergize, lockout, and tag the electrical circuits.
3.  Comply with the latest provisions of the Clean Air Act and Environmental
    Protection Agency (EPA) regulations as they apply to protection of
    stratospheric ozone.
4.  No intentional venting of refrigerants is permitted.  During the servicing,
    maintenance, and repair of refrigeration equipment, the refrigerant must be
5.  Whenever refrigerant is added or removed from equipment, record the
    quantities on the appropriate forms.
6.  Recover, recycle, or reclaim the refrigerant as appropriate.
7.  If disposal of the equipment item is required, follow regulations concerning
    removal of refrigerants and disposal of the appliance.
8.  If materials containing refrigerants are discarded, comply with EPA
    regulations as applicable.
9.  Refrigerant oils to be removed for disposal must be analyzed for hazardous
    waste and handled accordingly.
10. 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
        cleaner, (remove panels).
2. ___  Clean drain pan and note excessive corrosion, prepare metal and paint as
        necessary.  Consult the Material Safety Data Sheet (MSDS) to ensure that
        the paint lead level is 0.06% or less.
3. ___  Check for refrigerant leaks using a halogen detector or similar testing
        device.  Repair all leaks before recharging unit.  If leaks are not able
        to be stopped or corrected, report leak status to supervisor.  Consult
        the MSDS for disposal requirements.  Reclaimed and recycled CFCs are
        exempt from hazardous waste regulations (Consult 40 CFR Part 261).
4. ___  Check refrigerant levels for proper charge and recharge as needed.
5. ___  Check condition of cooling and reheat coils.  Use fin comb if needed to
        straighten fins.
6. ___  Clean coils, use coil cleaner detergent solution and high pressure water.
7 .___  Check belts for wear, adjust tension or alignment, and replace when
8. ___  Drain and clean humidifier drip pan, if applicable.  Remove corrosion;
        prime, and paint as needed.
9. ___  Lubricate motor and fan bearings, if not sealed.  Check alignment of
        motor and fan.
10.___  Replace prefilters if needed.
11.___  Replace final filters if needed.
12.___  Check compressor oil level, if compressor has an oil sight glass.
13.     Run machine, check action of controls, relays, switches, etc., to see
    a.___  compressor(s) run at proper settings.
    b.___  reheat coils activate properly.
    c.___  humidistat activates humidifier.
    d.___  suction and discharge pressures are proper.
    e.___  discharge air pressure is set properly.
14.___  check and tighten any loose unit electrical terminals, disconnect
        switches, or connectors.
15.___  Check and adjust vibration eliminators.  Replace if required.
16.___  Remove all trash or debris from work area.  Consult the MSDS for proper
        personal protective equipment (PPE).

Tools & Materials:

1.  Standard Tool kit.
    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, vacuum wet/dry, fin comb, grease gun and oil,
     filters and prefilters, spare belts.
3.  Approved refrigerant.
4.  Paint and brushes as required.  Consult the MSDS to ensure that the paint
     lead level is 0.06% or less.
5.  Self sealing quick disconnect refrigerant hose fittings
6.  Refrigerant recovery/recycle unit
7.  EPA/DOT approved refrigerant storage tanks.
8.  Safety goggles.
9.  Gloves.
10. Electronic leak detector.

Table of Contents    |    Next