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Sealed Refrigeration System Repairs
EQUIPMENT MUST BE CAPABLE OF
:
1. Recovering refrigerant to EPA required levels.
2. Evacuation from both the high side and low side of the system simultaneously.
3. Introducing refrigerant charge into high side of the system.
4. Accurately weighing the refrigerant charge actually introduced into the system.
IMPORTANT: ANY SEALED SYSTEM REPAIRS TO COOL-ONLY MODELS REQUIRE THE
INSTALLATION OF A LIQUID LINE DRIER. ALSO, ANY SEALED SYSTEM REPAIRS TO HEAT
PUMP MODELS REQUIRE THE INSTALLATION OF A SUCTION LINE DRIER.
Proper refrigerant charge is essential to proper
GE Vertical Zoneline operations. Operating a GE
Vertical Zoneline with an improper refrigerant
charge will result in reduced performance
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of proper charging methods during servicing will
insure that the GE Vertical Zoneline is functioning
as designed and that its compressor will not be
damaged.
Too much refrigerant (overcharge) in the system
is just as bad (if not worse) than not enough
refrigerant (undercharge). They both can be
the source of certain compressor failures if they
remain uncorrected for any period of time. Quite
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evaporator, etc.) are misdiagnosed as refrigerant
charge problems. The refrigerant circuit diagnosis
chart will assist in properly diagnosing these
systems.
The acceptable method for charging the RAC
system is the
Weighed in Charge Method
. The
weighed in charge method is applicable to all GE
Vertical Zonelines. It is the preferred method to
use, as it is the most accurate.
The weighed in method should always be
used whenever a charge is removed from a
GE Vertical Zoneline such as for a leak repair,
compressor replacement, or when there is no
refrigerant charge left in the GE Vertical Zoneline.
To change by this method, requires the following
steps:
On overcharged GE Vertical Zoneline will at times
return liquid refrigerant (slugging) back to the
suction side of the compressor eventually causing
a mechanical failure within the compressor. This
mechanical failure can manifest itself as valve
failure, bearing failure, and/or other mechanical
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and the length of time the slugging continues.
Not enough refrigerant (undercharge) on the
other hand, will cause the temperature of the
suction gas to increase to the point where it does
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motor. When this occurs, the motor winding
temperature will increase causing the motor to
overheat and possibly cycle open the compressor
overload protector. Continued overheating of the
motor windings and/or cycling of the overload will
eventually lead to compressor motor or overload
failure.
1. Install a piercing valve to remove refrigerant
from the sealed system. (The piercing valve
must be removed from the system before
recharging.)
2. Recover refrigerant in accordance with EPA
regulations.
3. Install a process tube to the sealed system.
4. Make necessary repairs to the system.
5. Evacuate the system.
6. Weigh in refrigerant with the property quantity
of R-410A refrigerant.
7. Start the GE Vertical Zoneline, and verify
performance.
Regrigerant Charging
Method of Charging / Repairs
Содержание GE Vertical Zoneline AZ90E09D C
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