Under 10 Tons Man Hours 3
Over 10 Tons Man Hours 6
Application:
This equipment is typically found in computer rooms, CAD rooms, laboratories,
etc. It is identical in design and configuration to the Packaged Unit for
comfort cooling. One difference is that it may use a glycol dry cooler during
favorable outside air conditions.
Special Instructions:
1. Review manufacturer's instructions and the Standard Operating Procedure for
"Controlling Hazardous Energy Sources."
2. Deenergize, lock out, and tag electrical circuits.
3. Perform any required dry cooler (PM GLYDRYCLR-A) or air cooled condenser
(PM AIRCLCOND-A) maintenance simultaneously with this PM.
4. Comply with the latest provisions of the Clean Air Act and Environmental
Protection Agency (EPA) regulations as they apply to protection of
stratospheric ozone.
5. No intentional venting of refrigerants is permitted. During the servicing,
maintenance, and repair of refrigeration equipment, the refrigerant must be
recovered.
6. Whenever refrigerant is added or removed from equipment, record the
quantities on the appropriate forms.
7. Recover, recycle, or reclaim the refrigerant as appropriate.
8. If disposal of the equipment item is required, follow regulations concerning
removal of refrigerants and disposal of the equipment.
9. If materials containing refrigerants are discarded, comply with EPA
regulations as applicable.
10. Refrigerant oils to be removed for disposal must be analyzed for hazardous
waste and handled accordingly.
11. 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 wet/
dry vacuum, (remove panels).
2. ___ Clean drain pan and note excessive corrosion, prepare and paint
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. If leaks are not able to be stopped or corrected, report leak
status to supervisor.
4. ___ Check refrigerant levels and recharge if needed. Consult the MSDS for
disposal requirements. Reclaimed and recycled CFCs are exempt from
hazardous waste regulations (Consult 40 CFR Part 261).
5. ___ Check condition of cooling and reheat coils. Use fin comb if needed to
straighten fins.
6. ___ A dirty coil surface can be cleaned using a coil cleaner solution and
warm water.
7. ___ Drain and clean humidifier drip pan, replace pan if applicable. Remove
scale and paint if necessary.
8. ___ Lubricate motor and fan bearings, if not sealed. Check alignment of
motor and fan. Clean fan or blower.
9. ___ Check belt tension and condition. Adjust or replace as required.
10.___ Replace prefilters if needed.
11.___ Replace final filters if needed.
12.___ Check compressor oil level if compressor has a 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 temperature is set properly.
14.___ Check and adjust vibration eliminators. Replace if required.
15.___ Check and tighten all electrical terminals, connections, and disconnect
switches.
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, fin comb, grease gun and oil, filters
and prefilters, spare belts.
3. Clamp meter (volt-ohm-amp meter).
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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