EarthLinked SCWD-024-1C, Quick Start Instructions

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SCWD-QS (12/16) Page 42
3) Initial Charge
1. Disconnect the vacuum pump and isolate the digital vacuum gauge. Connect the refrigerant
container to the charging hose of the manifold gauge set as shown in Figure 26.
2. Place the refrigerant container upside down (or oriented to deliver liquid refrigerant), with the
refrigerant valve at the bottom, on the scale, as shown in Figure 26. Purge the charging hose
by loosening it at the manifold end, until refrigerant is released. Tighten the charging hose and
zero out the refrigerant scale.
3. Open the LP valve on the manifold gauge set. Opening the refrigerant container valve sends
liquid refrigerant through the initial charging port into the system. Continue to add refrigerant
until 3 pounds per ton of system capacity has been added. In cold weather, it may be
necessary to warm the refrigerant container to charge to 3 pounds per ton.
4. After completing the initial refrigerant charge to the system, turn the LP valve off, re-install the
Schrader valve core into the initial charging port, remove the tool, and install the Schrader
valve cap firmly on the Schrader valve.
WARNING!
Inhalation of high concentrations of refrigerant gas vapor is harmful and
may cause heart irregularities or death. Vapor reduces oxygen available
for breathing and is heavier than air. Decomposition products are
hazardous. Liquid contact can cause frostbite. Avoid contact of liquid
with eyes and prolonged skin exposure. Liquid and gas are under
pressure. Deliberate inhalation of refrigerant gas is extremely
dangerous. Asphyxiation can occur without warning due to lack of
oxygen. Before using, read the material safety data sheet. Use proper
safety measures when charging the system, especially when warming
the refrigerant container. Do not overheat.