Under 10 Tons Man Hours 3
Over 10 Tons Man Hours 6
Application:
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
recovered.
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
necessary.
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
that:
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.
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