Central Machinery 95951 Installation manual

AUTO A/C RECOVERY /
RECHARGE MACHINE
Model 95951
SET UP AND OPERATING INSTRUCTIONS
Diagrams within this manual may not be drawn proportionally.
Due to continuing improvements, actual product may differ slightly from the product described herein.
Distributed exclusively by Harbor Freight Tools®.
3491 Mission Oaks Blvd., Camarillo, CA 93011
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright©2007 by Harbor Freight Tools®. All rights reserved. No portion of this
manual or any artwork contained herein may be reproduced in any shape or form
without the express written consent of Harbor Freight Tools.
For technical questions or replacement parts, please call 1-800-444-3353.

Page 2SKU 95951 For technical questions, please call 1-800-444-3353.
SPECIFICATIONS
Construction
Sheet Steel Housing, Reinforced Braided Rubber
Hoses with Brass Fittings, Polypropylene Valves,
Copper Tubing, Thermoplastic Oil Bottle and
Carbon Steel Hardware
Electrical Requirements 110 V~, 60 Hz
Compressor 1/3 HP Input Power
Vacuum Maximum Capacity 60 Liters per Minute (15.9 Gallons per minute)
Suitable for R134A Refrigerant
Refrigerant Tank Capacity 14 kg (30.8 lb)
Maximum Scale Weight 30 kg (66 lb)
Recovery Speed 250 Grams/Min (8.82 Ounces per Minute)
Relling Speed 800 G/Min (28 Ounces per Minute)
Overall Dimensions 18-1/8” W x 22” D x 43-1/8” H
Net Weight 160.8 lb.
Save This Manual
You will need this manual for the safety warnings and precautions, assembly, oper-
ating, inspection, maintenance and cleaning procedures, parts list and assembly diagram.
Keep your invoice with this manual. Write the invoice number on the inside of the front
cover. Write the product’s serial number in the back of the manual near the assembly
diagram, or write month and year of purchase if product has no number. Keep this manual
and invoice in a safe and dry place for future reference.
GENERAL SAFETY RULES
WARNING!
READ AND UNDERSTAND ALL INSTRUCTIONS
Failure to follow all instructions listed below may result in
electric shock, re, and/or serious injury.
SAVE THESE INSTRUCTIONS
WORK AREA
Keep your work area clean and well lit.1. Cluttered benches and dark areas invite
accidents.
Do not operate powered machines in explosive atmospheres, such as in the2.
presence of ammable liquids, gases, or dust. Power machines create sparks
which may ignite the dust or fumes.

Page 3SKU 95951 For technical questions, please call 1-800-444-3353.
Keep bystanders, children, and visitors away while operating a powered ma-3.
chine. Distractions can cause you to lose control. Protect others in the work area
from debris fumes and oil. Provide barriers or shields as needed.
ELECTRICAL SAFETY
Grounded machines must be plugged into an outlet properly installed and1.
grounded in accordance with all codes and ordinances. Never remove the
grounding prong or modify the plug in any way. Do not use any adapter plugs.
Check with a qualied electrician if you are in doubt as to whether the outlet is
properly grounded. If the machines should electrically malfunction or break down,
grounding provides a low resistance path to carry electricity away from the user.
Double insulated machines are equipped with a polarized plug (one blade is2.
wider than the other). This plug will t in a polarized outlet only one way. If
the plug does not t fully in the outlet, reverse the plug. If it still does not
t, contact a qualied electrician to install a polarized outlet. Do not change
the plug in any way. Double insulation eliminates the need for the three wire
grounded power cord and grounded power supply system.
Avoid body contact with grounded surfaces such as pipes, radiators, ranges,3.
and refrigerators. There is an increased risk of electric shock if your body is
grounded.
Do not expose powered machines to rain or wet conditions.4. Water entering a
powered machine will increase the risk of electric shock.
Do not abuse the Power Cord. Never use the Power Cord to carry the machines5.
or pull the Plug from an outlet. Keep the Power Cord away from heat, oil,
sharp edges, or moving parts. Replace damaged Power Cords immediately.
Damaged Power Cords increase the risk of electric shock.
When operating a powered machine outside, use an outdoor extension cord6.
marked “W-A” or “W”. These extension cords are rated for outdoor use, and
reduce the risk of electric shock.
PERSONAL SAFETY
Stay alert. Watch what you are doing, and use common sense when operat-1.
ing a powered machine. Do not use a powered machine while tired or under
the inuence of drugs, alcohol, or medication. A moment of inattention while
operating powered machines may result in serious personal injury.
Dress properly. Do not wear loose clothing or jewelry. Contain long hair. Keep2.
your hair, clothing, and gloves away from moving parts in engine compartment.
Loose clothes, jewelry, or long hair can be caught in moving parts in the machine.

Page 4SKU 95951 For technical questions, please call 1-800-444-3353.
Avoid accidental starting. Be sure the Power Switch is off before plugging in.3.
Leaving the Power Switch on while the machine is unattended invites accidents.
Remove adjusting keys or wrenches before turning the powered machine on.4.
A wrench or a key that is left attached to a rotating part of the powered machine
may result in personal injury.
Do not overreach. Keep proper footing and balance at all times.5. Proper foot-
ing and balance enables better control of the powered machine in unexpected
situations.
Use safety equipment. Always wear eye protection.6. Dust mask, nonskid safety
shoes, hard hat, or hearing protection must be used for appropriate conditions. Al-
ways wear ANSI-approved safety goggles and a dust mask/respirator when using
or performing maintenance on this machine. Keep the work area well ventilated.
TOOL USE AND CARE
Do not force the machine. Use the correct machine for your application.1. The
correct machine will do the job better and safer at the rate for which it is designed.
Do not force the machine and do not use the machine for a purpose for which it is
not intended.
Do not use the powered machine if the Power Switch does not turn it on or2.
off. Any machine that cannot be controlled with the Power Switch is dangerous
and must be replaced.
Disconnect the Power Cord Plug from the power source before making any3.
adjustments, changing accessories, or storing the machine. Such preventive
safety measures reduce the risk of starting the machine accidentally. Always un-
plug the machine from its electrical outlet before performing any inspection,
maintenance, or cleaning procedures.
Store idle machines out of reach of children and other untrained persons.4.
Tools are dangerous in the hands of untrained users.
Maintain machines with care.5. Properly maintained machines are less likely to fail
and are easier to control. Do not use a damaged machine. Tag damaged machines
“Do not use” until repaired.
Check for misalignment or binding of moving parts, breakage of parts, and6.
any other condition that may affect the machine’s operation. If damaged,
have the machine serviced before using. Many accidents are caused by poorly
maintained machines.
Use only accessories that are recommended by the manufacturer for your7.
model. Accessories that may be suitable for one machine may become hazardous
when used on another machine.

Page 5SKU 95951 For technical questions, please call 1-800-444-3353.
SERVICE
Tool service must be performed only by qualied repair personnel. 1. Service or
maintenance performed by unqualied personnel could result in a risk of injury.
When servicing a machine, use only identical replacement parts. Follow2.
instructions in the “Inspection, Maintenance, And Cleaning” section of this
manual. Use of unauthorized parts or failure to follow maintenance instructions
may create a risk of electric shock or injury.
SPECIFIC SAFETY RULES
Maintain labels and nameplates on the machine.1. These carry important informa-
tion. If unreadable or missing, contact Harbor Freight Tools for a replacement.
Maintain a safe working environment.2. Make sure there is adequate surround-
ing workspace. Do not use this product in a damp or wet location. Be sure there is
adequate ventilation. Do not operate machine or vehicle in enclosed space.
When using a handheld powered machine, always maintain a rm grip on the 3.
machine with both hands to resist starting torque.
Avoid unintentional starting.4. Make sure you are prepared to begin work before
turning on the machine.
Always keep the extension cord away from moving parts on the machine or5.
the vehicle.
People with pacemakers should consult their physician(s) before using this6.
product. Electromagnetic elds in close proximity to a heart pacemaker could cause
interference to or failure of the pacemaker. In addition, people with pacemakers
should adhere to the following:
• Avoid operating powered machines alone.
• Don’t use a powered machine with the power switch locked on.
• If powered via a power cord be certain that the machine is properly grounded. A
ground fault interrupt (GFCI) system is also a good precaution. This inexpensive de-
vice is a good safety measure because it prevents a sustained electrical shock.
• Properly maintain and inspect all machines before use to avoid electrical
shock.
Only use R134A refrigerant with this machine.7. Do not use other refrigerants.
Please see refrigerant discussion on page 12 of this manual for more information.
Before servicing, check vehicle owner’s manual to conrm that A/C system will
operate on R134A refrigerant.
Before starting service, check to see that the recovery tank has space for ad-8.
ditional coolant, there is replacement refrigerant in the coolant tank, and there
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Page 6SKU 95951 For technical questions, please call 1-800-444-3353.
is cooling oil in the cooling oil bottle. Check compressor oil level to determine
it is within safe limits before starting service.
Do not expose this machine to direct sunlight or rain.9. Keep it in a well ventilated
sheltered area.
The refrigerant tank may only be lled to 80% capacity during the recovery 10.
operation. Check tank level before starting service to ensure that there is sufcient
recovery space.
There must be at least 1 kg (2.2 lb) of refrigerant in the coolant tank to perform11.
the relling operation. Do not attempt the relling operation if there is less than 1
kg (2.2 lb) of refrigerant in the coolant tank.
The HP and LP Valves on the Control Panel must be in the CLOSED position12.
when attaching the machine to the auto A/C system.
When servicing, keep all hoses away from hot parts and moving components13.
of vehicle engine area to prevent hose damage.
When running the vehicle, be sure it is in PARK or NEUTRAL with parking14.
brakes locked and wheels chocked.
Never start the vehicle or operate the vehicle A/C system if the hose is con-15.
nected to the HP system and the HP Valve on the Control Panel is open.
WARNING: The brass components of this product contain lead, a chemical16.
known to the State of California to cause birth defects (or other reproductive
harm). (California Health & Safety code § 25249.5, et seq.)
GROUNDING
WARNING!
Improperly connecting the grounding wire can result in the risk of electric shock.
Check with a qualied electrician if you are in doubt as to whether the outlet is
properly grounded. Do not modify the power cord plug provided with the tool.
Never remove the grounding prong from the plug. Do not use the tool if the
power cord or plug is damaged. If damaged, have it repaired by a service facil-
ity before use. If the plug will not t the outlet, have a proper outlet installed by
a qualied electrician.
GROUNDED TOOLS: TOOLS WITH THREE PRONG PLUGS
Tools marked with “Grounding Required” have a three wire cord and three prong1.
grounding plug. The plug must be connected to a properly grounded outlet. If the
machine should electrically malfunction or break down, grounding provides a low
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Page 7SKU 95951 For technical questions, please call 1-800-444-3353.
resistance path to carry electricity away from the user, reducing the risk of electric
shock. (See 3-Prong Plug and Outlet.)
The grounding prong in the plug is connected through the green wire inside the2.
cord to the grounding system in the machine. The green wire in the cord must be
the only wire connected to the machine’s grounding system and must never be at-
tached to an electrically “live” terminal. (See 3-Prong Plug and Outlet.)
Your machine must be plugged into an appropriate outlet, properly installed and3.
grounded in accordance with all codes and ordinances. The plug and outlet should
look like those in the following illustration. (See 3-Prong Plug and Outlet.)
3-Prong Plug and Outlet Outlets for 2-Prong Plug
DOUBLE INSULATED TOOLS: TOOLS WITH TWO PRONG PLUGS
Tools marked “Double Insulated” do not require grounding. They have a special1.
double insulation system which satises OSHA requirements and complies with the
applicable standards of Underwriters Laboratories, Inc., the Canadian Standard
Association, and the National Electrical Code. (See Outlets for 2-Prong Plug.)
Double insulated machines may be used in either of the 120 volt outlets shown in2.
the preceding illustration. (See Outlets for 2-Prong Plug.)
EXTENSION CORDS
Grounded1. machines require a three wire extension cord. Double Insulated ma-
chines can use either a two or three wire extension cord.
As the distance from the supply outlet increases, you must use a heavier gauge2.
extension cord. Using extension cords with inadequately sized wire causes a seri-
ous drop in voltage, resulting in loss of power and possible machine damage.
(See Table A.)
The smaller the gauge number of the wire, the greater the capacity of the cord. For3.
example, a 14 gauge cord can carry a higher current than a 16 gauge cord.
(See Table A.)
When using more than one extension cord to make up the total length, make sure4.
each cord contains at least the minimum wire size required. (See Table A.)

Page 8SKU 95951 For technical questions, please call 1-800-444-3353.
If you are using one extension cord for more than one machine, add the nameplate5.
amperes and use the sum to determine the required minimum cord size.
(See Table A.)
If you are using an extension cord outdoors, make sure it is marked with the sufx 6.
“W-A” (“W” in Canada) to indicate it is acceptable for outdoor use.
Make sure your extension cord is properly wired and in good electrical condition.7.
Always replace a damaged extension cord or have it repaired by a qualied electri-
cian before using it.
Protect your extension cords from sharp objects, excessive heat, and damp or wet8.
areas.
RECOMMENDED MINIMUM WIRE GAUGE FOR EXTENSION CORDS*
(120 OR 240 VOLT)
NAMEPLATE
AMPERES
(at full load)
EXTENSION CORD LENGTH
25 Feet 50 Feet 75 Feet 100 Feet 150 Feet
0 – 2.0 18 18 18 18 16
2.1 – 3.4 18 18 18 16 14
3.5 – 5.0 18 18 16 14 12
5.1 – 7.0 18 16 14 12 12
7.1 – 12.0 18 14 12 10 -
12.1 – 16.0 14 12 10 - -
16.1 – 20.0 12 10 - - -
TABLE A * Based on limiting the line voltage drop to ve volts at 150% of the rated amperes.
SYMBOLOGY
Double Insulated
Canadian Standards Association
Underwriters Laboratories, Inc.
V~ Volts Alternating Current
AAmperes
n0xxxx/min. No Load Revolutions per Minute (RPM)

Page 9SKU 95951 For technical questions, please call 1-800-444-3353.
UNPACKING
When unpacking, check to make sure that the item is intact and undamaged. If any
parts are missing or broken, please call Harbor Freight Tools at the number shown on the
cover of this manual as soon as possible.
ASSEMBLY INSTRUCTIONS
Note: For additional information regarding the parts listed in the following pages, refer to
the Assembly Diagrams near the end of this manual.
1. WARNING! Make sure the Power Switch of the tool is in its “OFF” position and
that the tool is unplugged from the electrical outlet before making any adjustments
to the tool.
Remove the (4) Protection Bolts from the Electronic Scale before using this machine2.
for the rst time. The four Protection Bolts (see photo below) are fastened to the
bottom of the machine. To do this:
Use a 6mm wrench to remove the bolts. Turn them counterclockwise to loosen.a.
Store the bolts in a safe place for future use.
Use the Power ON/OFF Switch to turn on the machine.b.
Press the “Recovering” and “Circulate” keys at the same time to reset the scale.c.
The word “Good” will appear in the LED display if the scale is working properly.
Prior to shipping this machine, replace the Protection Bolts to lock the scale in place3.
to prevent damage.
Optional external coolant tank is discussed in this manual. This accessory is NOT4.
INCLUDED with this machine and must be purchased separately. It is discussed
here for your convenience.
REV 09h
Protection Bolts

Page 10SKU 95951 For technical questions, please call 1-800-444-3353.
LP Gauge HP Gauge
BP Gauge
LP Valve HP Valve
LED Display
+
Start/Stop
Relling
Vacuumize
Indicators
Circulate
Recovering
Control Panel Gauges
Please refer to the drawing on page 9 for Control Panel items.
HP Gauge:1. Displays pressure of the high pressure end of the auto A/C system.
LP Gauge:2. Displays pressure of the low pressure end of the auto A/C system.
BP Gauge:3. Displays pressure of the refrigerant tank of this machine.
Indicator Lights
Recovering:1. When lighted, indicates that the machine is performing the recovery
operation.
Vacuumize:2. When lighted, indicates that the machine is generating vacuum.
Relling:3. When lighted, indicates that the machine is relling the auto system. New
refrigerant is being added.
Drain:4. When lighted, indicates that the machine is draining used cooling oil from
the auto A/C system.
HP / Bottle Full:5. During the Recovery process when the light is on, it indicates either
that the HP pressure has reached or exceeded 240 PSI. The Recovery process
will halt until the pressure has automatically lowered to 180 PSI or less. If the pres-
sure is within safe bounds and this light comes on, it indicates that the Refrigerant
Tank is full, weighing over 14 kg. The Refrigerant Tank must be partially emptied to
continue the recovery process.
OPERATING INFORMATION
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