Instruction Manual
5
Before using your vacuum pump...
Note on Motor Voltage Connections:
In all cases, motors are designed for operating voltages, plus or minus
10% of the normal rating (see SPECIFICATIONS). Single voltage
motors are supplied fully connected and ready to operate.
1. Verify that the voltage and frequency at the outlet match the
specications on the pump motor decal. Place the ON / OFF switch in
the OFF position before you plug the pump into an outlet. Verify the gas
ballast valve is closed. Remove and discard the exhaust plug from the
end of the pump’s handle.
2. The pump is shipped without oil in the reservoir. Before starting the
pump, ll it with oil. Remove the OIL FILL cap (black plastic plug
directly in front of the handle), and add oil until the oil just shows in the
bottom of the sight glass. The approximate oil capacity of the pump is
384 milliliters.
3. Replace the OIL FILL cap, and remove the cap from one of the inlet
ports. OPEN the Iso-Valve™. Turn ON the motor switch. When the
pump runs smoothly, CLOSE the Iso-Valve™, and replace the cap on the
inlet port. This may take from two to 30 seconds depending on ambient
temperature. After the pump runs for approximately one minute, check
the sight glass for the correct oil level — the oil should be even with the
sight glass OIL LEVEL line. Add oil if necessary.
Note: When the pump is running, the oil level should be even with
the line on the sight glass. Underlling will result in poor vacuum
performance; overlling can result in oil blowing from the exhaust.
Your pump is now ready to evacuate air conditioning and refrigeration
systems. Follow normal service procedures and the A/C-R
manufacturer’s instructions for connections to the system.
CAUTION Before connecting your vacuum pump to an A/C-R system,
remove refrigerant from the system in an accepted manner.
Damage to the pump may occur if evacuation is started while
the system is under high pressure. Robinair recommends the
use of our Refrigerant Recovery and Recycling equipment.