Data Aire gForce DX - Component Functional Test; Charging Procedures; Refrigerant Handling; Air Cooled System Charging

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Example: If the liquid line of an R-410A system is 150 feet of 1-1/8" pipe, then
multiply 150 * 0.38 = 57 lbs.
Example: model GUAX-125XX (37.5 + 57 lbs.) * 0.80 = 75.6 lbs.
Component Functional Test
Confirm each component operates and is functional by using the dap4, MENU I – MANUAL
CONTROL (Service Level). See dap4 User Manual for details.
CHARGING PROCEDURES
WARNING: If the system is charged from a vacuum, the preheating of
the compressor is not necessary. But if starting a compressor that has not
been charged from a vacuum, the crankcase heater must be energized
for a minimum of 12 hours to reduce the possibility of liquid slugging on
start-up. Failure to energize the crankcase heater could result in
compressor damage.
NOTICE Prior to refrigerant charging, the proper tools and/or equipment must
be available, and the system vacuum and moisture removal procedure must
have been carried out. Refer to Section 5.1 Charging/Installation Work
Procedures and 5.2 Triple Evacuation and Dehydration Procedure prior to
charging the system.
NOTICE: Improper charging procedure could cause compressor damage in
several ways: excessive Low/High Pressure differences, liquid slugging or
vacuum operation. The below system refrigerant charge procedure is strongly
recommended to reduce these risks.
Refrigerant Handling
The use of recovery/recycling units is required by U.S. Environmental Protection Agency (EPA)
regulations. Technicians who service and dispose of air conditioning and refrigeration
equipment must re- cover the refrigerant instead of venting it to the atmosphere. Except for
extremely small releases of refrigerant such as what occurs when disconnecting service hoses,
a technician who knowingly releases or vents refrigerant to the atmosphere is in violation of
this regulation. Refrigerant purchasers must be certified technicians and have a valid EPA
certification card.
Air Cooled System Charging
Air cooled condensers provided with Data Aire equipment have integral fan speed controls.
The fan speed control is programmed at the factory to start the fan at a specific head pressure
and increase speed (i.e., airflow) when enough head pressure is developed, the fan will run at
full speed. The programming of this fan speed control is based on the refrigerant (R410A or