109212 (Rev. B 2/15/03) © SPX Corporation
Model 15145/15225
Two-Stage, Direct Drive
Vacuum Pump
1.2 cfm
(at 60 Hz)
Manufactured under one or more of the following patents:
U.S.: 4,523,897; 4,631,006.
Other Patents Pending.
Because of ongoing product improvements, we reserve the right to change
design, materials, and specifications without notice.
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Operating
M
anual
PART NO. DESCRIPTION
41184 Handle
48104 Gas Ballast Valve
13191 Exhaust Plug
15135 Shell and Sight Glass Assembly (no drain)
41186 Base and Foot Assembly
REPLACEMENT PARTS LIST
%
SPX Corporation
655 Eisenhower Drive
Owatonna, MN 55060-0995 USA
Technical Services: 1-800-822-5561
Fax: 1-800-822-7805
Customer Service: 1-800-533-6127
Fax: 1-800-322-2890
Web Site: www.robinair. com
Call our toll-free
Technical Support Line
1-800-822-5561
in the continental U.S. or Canada
or visit our web site
www.robinair.com
In all other locations, contact your local distributor. To help us
serve you better, please be prepared to provide the model
number, serial number, and date of purchase.
To validate your warranty, you must complete the warranty card
attached to your unit and return it within ten days from date of
purchase.
1 6
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.
OUT OF WARRANTY
Any Robinair high vacuum pump which is beyond the one-year warranty period
and fails to operate properly should be returned to the distributor with a full written
explanation of the problem, or you may return it yourself to the factory. Go to
Robinair.com or call 1-800-822-5561 for instructions on returning a pump.
Prior to returning an out-of-warranty pump, review all maintenance procedures to
avoid an unnecessary return. Note that contaminated oil or an incorrect oil level
will adversely affect pump performance. These conditions should be checked before
requesting service. Replacement parts are available if you desire to repair your own
pump. However, this should be considered only in out-of-warranty situations.
SPECIFICATIONS
Model 15145 15225
Number of Stages 22
Free Air Displacement 1.2 cfm* 1.0 cfm
Factory Micron Rating 50 50
Oil Capacity 5 oz. 5 oz.
148 ml 148 ml
Weight 10 lbs. 10 lbs.
4.54 kg 4.54 kg
Width 41/2"4
1
/2"
11.4 cm 11.4 cm
Length 913/16"9
13
/16"
25 cm 25 cm
Height 81/2"8
1
/2"
21.6 cm 21.6 cm
Intake Fitting
1
/4" MFL
1
/4" MFL
Motor Size
1
/8 hp
1
/8 hp
Capacitor Capacitor
Start Start
Voltage 100V 250V
50/60 Hz 50 Hz
Operating 185oF 185oF
Temperature 85oC85
o
C
*1.2 cfm at 60 Hz
1 cfm at 50 Hz
PARTS IDENTIFICATION
BLACK EXHAUST PLUG
(NOTE VENT HOLE)
RED SHIPPING PLUG
(REMOVE AND DISCARD)
GAS
BALLAST
VALVE
INLET
CAP
INLET
CONNECTION
SIGHT
GLASS
OIL LEVEL
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INTRODUCTION
Your vacuum pump has been factory tested and meets Robinair’s stringent quality
standards. This high performance pump will provide you with years of trouble-free
service if you follow these instructions for operating and maintaining the pump.
The pump’s offset rotary vane design provides high efficiency operation. The
motor is properly sized to ensure 32oF (0oC) starting at 90 percent of the rated
voltage.
Be careful when removing the pump and contents from the shipping carton. If there
is any apparent shipping damage to the pump, the shipping company should be
notified immediately and the container saved for inspection.
IMPORTANT! This pump is not intended to pump any type of liquid (oil, water,
refrigerant, etc.). To do so, or to allow the accumulation of contaminants in the
pump reservoir, can result in premature failure and can void the warranty.
OPERATING INSTRUCTIONS
WARNING! Wear safety goggles when working with
refrigerants. Contact with refrigerant can cause eye injury.
Use a recovery unit to remove all refrigerant before using
the pump to pull a vacuum.
1. Remove and discard the red plastic plug at the top of the finned reservoir.
2. Fill the pump reservoir to the “OIL LEVEL” line on the sight glass on the front
of the pump. Use the oil packaged with the vacuum pump or fresh Robinair All
Climate Vacuum Pump Oil, available at your supplier.
3. Install the black plastic operating exhaust plug. Note that the operating plug is
notched to allow exhaust flow.
CAUTION! Do
not
attempt to operate the pump with the exhaust port
plugged. To do so could result in permanent damage to the pump or
could cause the plug to be blown from the pump reservoir.
4. Note the electric motor voltage rating, and connect to the proper power source.
Avoid long extension cords, which drop voltage below ten percent of the line
voltage, causing poor starting or motor heating.
You are now ready to remove the 1/4" male flare cap and to connect the pump to the
air conditioning system. Follow the system manufacturer’s directions for proper
evacuation.
Failure To Start
1. Check the line voltage. Your vacuum pump is designed to start at minus ten
percent of rated voltage and at 32oF (0oC). However, at or near these extremes,
there may be some hesitation in starting.
2. If the pump is accidentally shut down in a vacuum condition, the pump may
hesitate when restarted. This is because the vacuum pump oil has been drawn
into the pump module. The pump will run normally after clearing the oil from
the module.
Oil Leakage
1. Verify the oil is not a residual accumulation due to spillage, overfilling, or
similar causes.
2. If the pump is actually leaking oil, you may have to replace the O-ring in the
end shell, or return the pump to the factory for servicing.
WARRANTY
Robinair high vacuum pumps are warranted against defects in material or workmanship for a period of one year of normal use from date of purchase. If within one
year from date of purchase, the vacuum pump should prove faulty due to manufacturer error, return it to the distributor from whom you originally purchased the
vacuum pump. You must provide the distributor with proof of purchase and the
warranty claim check tag which is supplied with each vacuum pump.
Upon determining that a valid warranty claim exists, the Robinair distributor is
authorized to exchange the faulty vacuum pump for a new vacuum pump of the
same model at no additional charge. If a vacuum pump is returned for a warranty
claim and the claim is determined to be invalid, a minimum service charge plus the
cost of repair parts and return freight will be charged. Final determination of valid
warranty claims will be made by Robinair, Owatonna, MN.
The warranty shall not apply to any product or part which has been subject to
misuse, negligence, or accident. The Seller shall not be responsible for any special
or consequential damages, and the Warranty as set forth is in lieu of all other
warrranties either expressed or implied. However, the Seller makes no warranty of
merchantability in respect to any of the goods offered in the manual and any
applicable manufacturer’s shop or service manuals referred to therein, including
any subsequent service bulletins.
3 4
USING THE GAS BALLAST (Vented Exhaust)
All Robinair high vacuum pumps feature a gas ballast for more thorough evacuation and longer pump life. As vapors from an A/C or refrigerant system containing
more than the average amount of moisture pass through a vacuum pump, they
condense into liquid and combine with the vacuum pump oil. When these vapors
mix with the oil, it becomes contaminated, raises the vapor pressure of the vacuum
pump oil, and reduces the pump’s ability to reach its ultimate attainable vacuum.
Opening the ballast valve purges a small amount of atmospheric air through the
exhaust chamber. This extra volume of air mixes with the vapors from the A/C or
refrigerant system, prevents them from being condensed, and helps them to be
exhausted from the pump in vapor form.
After the pump has started, the gas ballast valve (see the diagram on page 1) should
be opened until the system has reached approximately 1000 microns. At this time,
close the valve to allow the pump to pull its ultimate vacuum level. The gas ballast
valve may be opened or closed at any time during pump operation. The valve is
fully open at two turns counterclockwise.
SHUTTING DOWN THE PUMP
Follow these procedures when shutting down your pump to ensure long life and
easy starting.
1. Shut off all gauges to the A/C system.
2. Close any valve between the pump and the A/C system.
3. Turn off the pump, and open the inlet port to atmosphere
immediately at shutdown.
4. Cap the inlet port immediately to prevent any contamination or loose particles
from entering the port.
For maximum performance, Robinair recommends changing vacuum pump oil after
each use. Use only a high quality oil. Robinair recommends its All Climate High
Vacuum Pump Oil, which has been specially blended to maintain optimum
viscosity at high and low operating temperatures.
CHANGING THE OIL
1. Verify the pump is warmed up and the inlet is opened to the atmosphere.
2. Disconnect the pump from the AC electrical power source.
3. Remove the black operating exhaust plug from the top of the pump reservoir.
4. Hold the pump upside down, tilting it forward and backward to drain all the oil
from the reservoir into a suitable container.
Note:
If the drained oil is badly contaminated, the pump may need to be
flushed. If flushing is necessary, run the pump (CAUTION: To prevent
damage to the pump, do not run the pump more than 30 seconds without
any oil.) and slowly pour clean oil through the pump inlet (being careful not to
slug, or bog down, the pump). Drain the oil, and repeat this procedure as
necessary before going to Step 5.
5. Refill the pump reservoir to the “OIL LEVEL” line on the sight glass with
fresh Robinair All Climate Vacuum Pump Oil.
6. Replace the black operating exhaust plug.
Cleaning Your Pump
Clean the pump with soap and water only. Do not use commercial cleaners that
contain degreasing agents that can damage polycarbonates. The pump handle and
base are made of Lexan*, one of the toughest polycarbonate plastics available.
However, it is sensitive to degreasing agents.
*Lexan is a registered trademark of General Electric
TROUBLESHOOTING TIPS
Before returning any Robinair vacuum pump, in or out of warranty, review the
following troubleshooting guide:
Failure To Pull Good Vacuum
1. Verify the gauge and connections are leak-free and in good condition. You can
confirm this by monitoring the vacuum with a thermistor vacuum gauge while
applying vacuum pump oil at connections or suspected leak points. The
vacuum will improve briefly while the oil seals the leak, then revert to the
previous level.
Note:
Checking pump vacuum through a charging hose is not recommended.
Refrigerant and other contaminants contained in the hose may adversely affect the
vacuum reading.
2. Verify the pump oil is clean. A badly contaminated pump may require several
oil flushes (see “Changing the Oil”) before you are able to reach the rated
vacuum level.
3. Verify the oil is at the proper level. For optimum vacuum operation, the oil
must be level with the sight glass oil line. Overfilling will not affect vacuum
operation, but may result in oil blowing from the exhaust during free air
operation.
4. Verify the gas ballast valve is fully closed.
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