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This system uses R--410A refrigerant which has higher
operating pressures than R--22 and other refrigerants. No other
refrigerant may be used in this system. Gage set, hoses, and
recovery system must be designed to handle R--410A. If you
are unsure, consult the equipment manufacturer. Failure to use
R--410A compatible servicing equipment or replacement
components may result in property damage or injury.
Compressor Oil
The Copeland scroll compressor uses 3MAF POE oil. If
additional oil is needed, use Uniqema RL32--3MAF. If this oil is
not available, use Copeland Ultra 32 CC or Mobil Arctic EAL22
CC. This oil is extremely hygroscopic, meaning it absorbs water
readily. POE oils can absorb 15 times as much water as other
oils designed for HCFC and CFC refrigerants. Take all
necessary precautions to avoid exposure of the oil to the
atmosphere.
Servicing Systems on Roofs with Synthetic
Materials
POE (polyolester) compressor lubricants are known to cause
long term damage to some synthetic roofing materials.
Exposure, even if immediately cleaned up, may cause
embrittlement (leading to cracking) to occur in one year or
more. When performing any service that may risk exposure of
compressor oil to the roof, take appropriate precautions to
protect roofing. Procedures which risk oil leakage include, but
are not limited to, compressor replacement, repairing refrigerant
leaks, replacing refrigerant components such as filter drier,
pressure switch, metering device, coil, accumulator, or
reversing valve.
Synthetic Roof Precautionary Procedure
1. Cover extended roof working area with an impermeable
polyethylene (plastic) drip cloth or tarp. Cover an
approximate 10 x 10 ft (3 x 3 m) area.
2. Cover area in front of the unit service panel with a terry
cloth shop towel to absorb lubricant spills, prevent
run--offs, and protect drop cloth from tears caused by
tools or components.
3. Place terry cloth shop towel inside unit immediately
under component(s) to be serviced and prevent lubricant
run--offs through the louvered openings in the unit base.
4. Perform required service.
5. Remove and dispose of any oil contaminated material
per local codes.
51901190402
Liquid Line Filter Drier
The filter drier is specifically designed to operate with R--410A.
Use only factory--authorized components. Filter drier must be
replaced whenever the refrigerant system is opened. When
removing a filter drier, use a tubing cutter to cut the drier from
the system. Do not unsweat a filter drier from the system. Heat
from unsweating will release moisture and contaminants from
drier into system.
R- - 410A Refrigerant Charging
Refer to unit information plate and charging chart. Some
R--410A refrigerant cylinders contain a dip tube to allow liquid
refrigerant to flow from cylinder in upright position. For cylinders
equipped with a dip tube, charge R--410A units with cylinder in
upright position and a commercial metering device in manifold
hose. Charge refrigerant into suction--line.
TROUBLESHOOTING
Refer
troubleshooting information.
START- -UP CHECKLIST
Use the Start--Up Checklist at the back of this manual.
Specifications subject to change without notice.
to
the
Troubleshooting
Chart
(Table
10)
for
25
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