Install Instructions

www.emersonflowcontrols.com
Suction Line Accumulators
Suction Line Accumulators
Instruction Sheet
PA-00307
July 2008
11911 Adie Road P.O. Box 411400 St. Louis MO 63141 USA CUSTOMER SERVICE [phone]
Compressors are extremely susceptible to damage from
liquid refrigerant. Excessive liquid refrigerant return may
cause not only oil dilution but complete loss of the
compressor oil charge which results in equipment damage
due to lack of proper lubrication. In addition, refrigerant
flashing may occur causing the oil pump to lose pressure.
The right selection and installation of a Suction Accumula-
tor in the line, as close as possible to the compressor, is a
life-saver for the equipment, assuring adequate oil return
and that refrigerant return only, is returning to the com-
pressor.
Suction Accumulators can also function as suction traps
that prevent liquid refrigerant floodback, one of the most
common causes of compressor failure. In most cases
liquid floodback can be controlled. However, an accumu-
lator assures control and protection of the compressor.
In summary, Suction Line Accumulators:
1. Provide compressor protection, preventing compressor
failure due to liquid slugging.
2. Assure adequate oil return and assures that refrigerant
vapor only is returning to the compressor.
3. Provide a minimum system pressure drop while
maintaining the maximum refrigerant flow required.
With Emerson Climate Technologies Suction Line
Accumulators you receive:
• Operation design to 40°F evaporator temperature.
• Suction gas temperatures to as low as 12°F at the
accumulator
• Fuse plug available on specific models.
• CUL Listed for a max. working pressure at 300 psig.
• Electrostatic powder paint coating assuring corrosion
resistance beyond 500 hours of salt spray (ASTM).
• Solid copper fittings.
INSTALLATION INSTRUCTIONS
AND RECOMMENDATIONS
⇒ WARNING: Normal precautions should be taken
by directing the flame away from the shell. Use
chill blocks wet rags, or other suitable heat
protection for the accumulator.
⇒ Install unit in a bypass line or suction lien as close to
the compressor as possible.
⇒ Apply product according to manufacturer’s capacity
rating only.
⇒ For reverse cycle applications, install accumulator
between the reversing valve and the compressor
⇒ Be sure to attach incoming refrigerant line to the
fitting marked “inlet”.
⇒ Always install the accumulator upright in the vertical
position.