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Operating Manual
Model No. 15602
High Performance Vacuum Pump
Models 15402 and 15602
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Robinair High Performance Vacuum Pumps
Congratulations on purchasing one of Robinair’s top quality vacuum
pumps. Your pump has been engineered specically 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-ValveTM 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. This
minimizes pump oil pulled into the pumping module, making start-up
easier and reducing wear and tear on the pump components.
The two-stage, offset, rotary vane design provides powerful, quiet,
High
Vacuum
Rating
The intake lter prevents foreign matter from entering the pumping
Lifetime
Filtration
Exhaust is expelled through the handle to direct it away from the service
Directed
Exhaust
high vacuum capability and ensures moisture removal, while the high
pumping capacity reduces evacuation time.
chamber, and an internal exhaust lter separates oil vapor from the
exhaust ow.
technician.
Gas
A precise amount of atmospheric air is introduced into the pump,
Ballast
Sure-Grip
The one-piece, molded handle makes it easy to carry the pump to and
Handle
Compact
The pump measures 40 centimeters long, while aluminum housing and
Design
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 ammable refrigerants.
preventing condensation of moisture vapor and helping maintain the
purity of the pump oil. By using the gas ballast, the pump operates more
efciently and pump life is extended.
from job sites, and the handle stays cool to the touch during operation.
offset rotary vanes keep the pump weight low, making it easy to carry.
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12
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Model No. 15602
shown
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10
9
Pump
Components
Wear safety goggles when working with refrigerants. Contact with
refrigerants may cause eye injury.
Incorrect use or electrical connections may cause electrical shock.
Read and follow instructions carefully, and take precautions to avoid
electrical shock hazards. All associated devices must be correctly
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.
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1. Intake Fitting
2. Gas Ballast Valve
(located beside handle base)
3. Oil Fill Port
4. Sight Glass
5. Die-Cast Aluminum Housing
6. Oil Drain
WARNING!
4
5
7
7. Molded Polycarbonate Base
8. Iso-ValveTM
(isolates pump from system)
9. High-Torque Motor
10. Power Switch
11. Through-The-Handle Exhaust
12. Sure-Grip Handle
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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. 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.
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To use the gas ballast feature...
Moisture from the A/C-R system that is carried into the pump as a vapor
tends to condense into a liquid and combine with the vacuum pump oil.
When moisture contaminates the pump oil, it reduces the pump’s ability
to reach its ultimate deep vacuum level.
The gas ballast valve purges a small amount of atmospheric air through
the exhaust chamber. This extra volume of air mixes with the vapor
from the refrigerant system to prevent condensation and to help exhaust
moisture in the form of vapor from the pump.
The gas ballast valve is located beside the handle, opposite the inlet
tting. To use the gas ballast, start the pump and open the gas ballast
valve until the system has reached approximately 1000 microns. Close
the valve to allow the pump to pull down to its ultimate vacuum level.
The gas ballast valve may be opened or closed at any time during pump
operation. It is fully open at two turns counterclockwise.
Note: Robinair recommends the use of a thermistor vacuum gauge to
most accurately measure vacuum levels.
To shut down the pump after use...
To help prolong pump life and promote easy starting, follow these
procedures for shutdown:
1. Close the manifold valve between the pump and the system.
2. Turn the Iso-Valve™ to the CLOSED position.
3. Remove the hose from the pump inlet.
4. Turn the pump power switch to OFF. Return the Iso-Valve™ to the
OPEN position for a few seconds to relieve any vacuum inside the pump.
5. Cap the inlet port to prevent any contamination or loose particles from
entering the port.
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To maintain the high vacuum pump...
For maximum performance, Robinair recommends changing vacuum
Vacuum
Pump Oil
The condition and type of oil used in any high vacuum pump are
Robinair Premium High Vacuum Pump Oil is available in handy quart
13203 — Quart (shipped 12 quarts per case)
13204 — Gallon (shipped 4 gallons per case)
1. Allow the pump to run until it is warmed up.
Oil
Change
2. Remove the OIL DRAIN cap. Drain contaminated oil into a suitable
Procedure
3. When the ow of oil has stopped, tilt the pump forward to drain
pump oil after each use.
extremely important in determining the ultimate attainable vacuum.
Robinair recommends the use of our Premium High Vacuum Pump Oil.
This oil has been specically blended to maintain maximum viscosity at
normal running temperatures and to improve cold weather starts.
containers or in convenient gallon containers. Order by part number:
container and dispose of correctly. Oil can be forced from the pump by
opening the inlet and partially blocking the exhaust with a cloth while
the pump is running. Do not operate the pump for more than 20 seconds
using this method.
residual oil.
4. Replace the OIL DRAIN cap. Remove the OIL FILL cap, and ll the
reservoir with new vacuum pump oil until the oil just shows at the
bottom of the sight glass. The approximate oil capacity of the pump
is 384 milliliters.
5. Verify the inlet ports are capped, and turn ON the pump. Allow it to run
for one minute, and check the oil level. If the oil is below the sight glass
OIL LEVEL line, add oil slowly (with the pump running) until the oil
reaches the OIL LEVEL line. Replace the OIL FILL cap, making sure the
inlet is capped and the drain cap is tight.
6. a) If the oil is badly contaminated with the sludge that forms when
water is allowed to collect in the oil, you may need to remove the oil
reservoir cover and wipe it out.
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b) Another method of dealing with heavily contaminated oil is to force
the oil from the pump reservoir. To do this, allow the pump to run
until it is warmed up. While the pump is still running, remove the oil
drain cap. Slightly restrict the exhaust. This will back-pressure the oil
reservoir and force the oil from it, carrying more contaminants. When
the oil ceases to ow, turn off the pump.
Repeat this procedure as required until the contamination is removed.
Replace the OIL DRAIN cap, and rell the reservoir to the correct level
with fresh pump oil (see Step 4).
Clean the pump using only soap and water. Do not use commercial
Cleaning
the Pump
*Lexan is a registered trademark of General Electric.
cleaners containing degreasing agents that can damage polycarbonates.
The pump handle and base are made of Lexan®, one of the toughest
polycarbonate plastics available, but it is sensitive to degreasing agents.
Troubleshooting Guide
Your pump has been designed for dependable use and long life. If
something should go wrong, however, the following guide will help you
get the pump back into service as quickly as possible.
If disassembly of the pump is required, rst check your warranty. The
warranty may be voided by misuse or customer tampering that results in
the pump being inoperable.
Check line voltage. Robinair pumps are designed to start at +10% line
Failure
To Start
Oil
1. Verify the oil is not a residual accumulation from spillage, etc.
Leakage
2. If leakage exists, the module cover gasket or the shaft seal may need
1. Verify the Iso-Valve™ on the pump is in the OPEN position.
Failure
To Pull
2. Verify the vacuum gauge and all connections are in good conditon and
A Good
Vacuum
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voltage (loaded) at 0o C. At extremes, however, switching between the
start and run windings may occur.
replacing. Follow the instructions supplied with Seal Replacement Kit
No. 15367. If leakage exists in the area of the oil drain plug, you may
need to reseal the plug using a commercial pipe thread sealer.
leak-free. Conrm leakage by monitoring the vacuum with a thermistor
gauge while applying vacuum pump oil at connections or suspected leak
points. Vacuum will improve briey while the oil is sealing the leak.
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3. Verify the pump oil is clean. A badly contaminated pump may require
several oil ushes. See OIL CHANGE PROCEDURE.
Note: Use only high vacuum pump oil such as Robinair’s Premium High
Vacuum Pump Oil. Other oils will prevent pull-down to a deep vacuum.
4. Verify the gas ballast knob is tightly closed.
5. Verify the oil is at the correct level. For maximum pump operation, the
oil must be even with the OIL LEVEL line on the sight glass when the
pump is running. See OIL CHANGE PROCEDURE. Do not overll —
operating temperatures will cause the oil to expand so it will appear at a
higher level than when the pump is not running. To check the oil level,
start the pump with the inlet capped. Check the oil level in the sight
glass. Add oil if necessary.
If these procedures do not correct the problem, contact your nearest
When You
Need Help
Robinair distributor. The distributor may recommend an additional
replacement part (this manual contains a parts list) or suggest you send
your pump to the nearest authorized service center.
Warranty Coverage
Robinair vacuum pumps are warranted against defects in material and
workmanship for one year of normal use from the date of purchase. See
your distributor for warranty details.
A pump that is no longer covered by the one-year warranty period, and
Out of
Warranty
Before returning an out-of-warranty pump, review all maintenance
which fails to operate correctly, should be returned to the distributor with
a full written explanation of the problem. The distributor may suggest
returning the pump to the factory or to an authorized Robinair service
center.
procedures to avoid an unnecessary return. Note that contaminated
oil or an incorrect oil level will adversely affect pump performance.
Replacement parts are available for doing your own service. However,
this should be considered only in out-of-warranty situations.
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Model No. 15602
shown
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4
Replacement Parts
Part Item No. 15402 15602
Intake Fitting 1 15364 555124
Intake Caps (1/4", 3/8", and 1/2" are; 1 ea.) 2 555133 555133
Oil Fill Cap 4 15371 15371
Oil Drain Kit 5 13193 13193
Oil Drain Cap (6 / pkg.) 6 40572 40572
Base and Foot Assembly 7 15369 15369
Iso-Valve™ Assembly 8 15368 15368
Coupling 9 13192 13192
Motor 10 15227 15256
Handle, Power Cord, and Switch Assembly 11 15366 15366
Vent Bolt (includes o-rings) 12 15338 15338
Seal Replacement Kit (not shown) -- 15367 15367
Module Cover Kit (includes 4, 5, and 14) -- 15337 15337
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Pump Specications
Model 15402 15602
Free Air Displacement 4 CFM 6 CFM
93 l/m @ 50 Hz 142 l/m @ 50 Hz
113 l/m @ 60 Hz 170 l/m @ 60 Hz
Stages 2 2
Motor Speed 1425 RPM @ 50 Hz 1425 RPM @ 50 Hz
1725 RPM @ 60 Hz 1725 RPM @ 60 Hz
Voltage +10% 100V 50/60 HZ 100V 50/60 HZ
Factory Micron Rating 15 microns 15 microns
Approximate Oil Capacity 450 mL 450 mL
Weight 13.6 kg 14 kg
Width 14.3 cm 14.3 cm
Height 24.6 cm 24.6 cm
Length 38.7 cm 40.6 cm
Intake
SAE MFL SAE MFL
Min. Starting Temp.
(at 90% Voltage) 0°C 0°C
Motor Size
Operating Temp. 68oC 68oC
1
/2" and 1/4"
1
/3 hp capacitor start 1/2 hp capacitor start
1
/4", 3/8", and 1/2"
Note: 1. All motors are internally protected (automatic reset).
2. Operating temperatures are typical for normal operating conditions.
Due to ongoing product improvements, we reserve the right
to change design, specications, and materials without notice.
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655 Eisenhower Drive
Owatonna, MN 55060 USA
Technical Services: 1-800-822-5561
Fax: 1-866-259-1241
Customer Service: 1-800-533-6127
Fax: 1-800-283-8665
Web Site: www.robinair. com
112372 Rev. D March 25, 2014 © Bosch Automotive Service Solutions LLC
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