RobinAir 15434 User Manual
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Operating
M
anual
High Performance Vacuum Pump
Model 15434
For use with refrigerants
R-12, R-22, R-500, R-502, or R-134a
CoolTech® High Performance Vacuum Pumps
Congratulations on purchasing one of Robinair’s top quality CoolTech
vacuum pumps. Your pump has been engineered specifically for air
conditioning and refrigeration service, and is built with Robinair’s
proven offset rotary vane for fast, thorough evacuation.
You’ll appreciate these key features...
Iso-Valve
TM
Allows the pump to be shut off while still connected to the A/C-R
system, which is handy for checking rate of rise. With the valve handle
in the OPEN position, the pump is open to the system being evacuated.
In the CLOSED position, the pump is isolated from the system.
High The two-stage, offset rotary vane design provides powerful, quiet high
Vacuum vacuum capability and assures moisture removal, while the high
Rating pumping capacity reduces evacuation time.
Multiple The 15434 can be used for R-12, R-22, R-500, and R-502, as well as
Refrigerant for R-134a. The inlet “tee” has both
1
/4" SAE male flare and 1/2" Acme
Capability fittings to accommodate hoses from either type of manifold.
Directed The exhaust is expelled through the handle to direct it away from the
Exhaust service technician.
Gas A precise amount of atmospheric air is introduced into the pump,
Ballast preventing condensation of moisture vapor and helping maintain the
purity of the pump oil. By using the gas ballast, the pump operates more
efficiently and pump life is extended.
®
Sure-Grip The one-piece, molded handle makes it easy to carry the pump to and
Handle from job sites, and the handle stays cool to the touch during operation.
Compact Your pump measures approximately 15" long, while aluminum housing
Design and offset rotary vanes keep the pump weight low, making it easy to
carry.
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Pump Components
1. Intake Fitting (upper fitting is 1/2"
Acme, side fitting is
2. Gas Ballast Valve (located beside
handle base)
3. Oil Fill Port
4. Sight Glass
5. Die-Cast Aluminum Housing
6. Oil Drain
1
/4" SAE)
7. Molded Polycarbonate Base
TM
8. Iso-Valve
the system
9. Powerful, High Torque Motor
10. Power Switch
11. Through-The-Handle Exhaust
12. Sure-Grip Handle
— Isolates the pump from
For use on A/C-R systems using CFCs, HCFCs and HFCs in
conjunction with mineral oil, ester oil, alkylbenzene oil and
PAG oil as lubricants. Not for use with ammonia or lithium
bromide systems. Not for use with flammable refrigerants.
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WARNINGS
Always wear goggles when working with refrigerant. Contact with
refrigerant may cause injury.
Improper use or connections may cause electrical shock hazards.
Read and follow the instructions carefully and take precautions to
avoid electrical shock hazards. Be sure that all associated devices
are properly grounded before energizing circuits.
The normal operating temperature will cause certain external
portions of the pump to be hot to the touch. Do not touch the pump
housing or motor during operation.
Use separate manifolds and hoses for R-134a systems. Cross-contamination with other refrigerant types will cause severe damage to
the A/C system and to service tools and equipment. Do not mix
refrigerant types through a system or in the same container!
Avoid breathing refrigerant and lubricant vapor or mist. Exposure
may irritate eyes, nose, and throat. To remove R-134a from the A/C
system, use service equipment certified to meet the requirements of
SAE J2210 (R-134a recycling equipment). If accidental system discharge occurs, ventilate work area before resuming service.
HFC-134a service equipment or vehicle A/C systems should not be
pressure tested or leak tested with compressed air. Some mixtures of
air/HFC-134a have been shown to be combustible at elevated pressures. These mixtures are potentially dangerous and may result in
fire or explosion causing injury or property damage.
Additional health and safety information may be obtained from
refrigerant and lubricant manufacturers.
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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. Check to be sure the voltage and frequency at the outlet match the
specifications on the pump motor decal. Check the ON-OFF switch to
be sure it is in the OFF position before you plug the pump into an
outlet. Check to be sure 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, fill it with oil. Remove the OIL FILL cap (black plastic plug
directly in front of the handle), and add oil until oil just shows in the
bottom of the sight glass. Approximate oil capacity of pump:
13 ounces.
3. Replace the OIL FILL cap, and remove the cap from one of the inlet
ports. Turn the Iso-Valve to OPEN. Turn the motor switch to 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 the ambient temperature. After the pump runs
for approximately one minute, check the sight glass for proper oil
level — 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. Underfilling will result in poor vacuum performance. Overfilling can result in oil blowing from the exhaust.
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