Robinair 15120A_15121A - Manual (Page 3)

Operating Manual
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Pump components
1. Intake Fitting
2. Gas Ballast Valve (located beside handle)
3. Exhaust Filter
4. Oil Fill Port
5. Sight Glass
6. Die-Cast Aluminum Housing
7. Oil Drain
8. Molded Polycarbonate Base
9. Iso-Valve TM
(isolates the pump from the system)
10. High Torque Motor
11. Power Switch
12. Sure-Grip Handle
Before using the
vacuum pump
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 the voltage and frequency at the
outlet match specifications on the pump
motor decal. Place the ON / OFF switch in
the OFF position. Verify the gas ballast
valve is closed.
2. The pump is shipped without oil in the
reservoir. Remove and discard the plastic
plug from the top of the oil reservoir. Before
starting the pump, fill with oil until the oil just
shows in the bottom of the sight glass. The
approximate oil capacity of the pump is 488
milliliters (16 1 /
2
ounces).
3. Thread in the exhaust filter (hand tight), and
remove the cap from one of the inlet ports.
Turn the Iso-Valve to OPEN. Turn the motor
switch ON. When the pump runs smoothly,
turn the Iso-Valve to CLOSED 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 — oil should be even
with the sight glass OIL LEVEL line. Add oil if
necessary.
When the pump is running, the oil level should
be even with the OIL LEVEL line. Underfilling will
result in poor vacuum performance. Overfilling can
result in oil blowing from the exhaust.
The vacuum 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 the 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 use of
our Refrigerant Recovery and Recycling
equipment.
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Rev. C May 10, 2010