Central Pneumatic 93657 Assembly instructions

!"#"$%&'(%)*+#"$*%,$-%.$$/-00)))1.,(+&(2(*"3.$14&5
65,"7%&'(%$*4.8"4,7%#'//&($%,$-%/(&9'4$#'//&($:.,(+&(2(*"3.$14&5 93657
oilless airbrush
compressor
Owner’s Manual & Safety Instructions
Save This Manual Keep this manual for the safety warnings and precautions, assembly,
operating, inspection, maintenance and cleaning procedures. Write the product’s serial number in the
back of the manual near the assembly diagram (or month and year of purchase if product has no number).
Keep this manual and the receipt in a safe and dry place for future reference. 20i
When unpacking, make sure that the product is intact
and undamaged. If any parts are missing or broken,
please call 1-888-866-5797 as soon as possible.
Copyright© 2013 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.
Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein.
To ol s r eq ui r ed f o r as s em bl y a nd se rvice m ay not be in cluded.
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.

Page 2 ;&(%$*4.8"4,7%<'*#$"&8#=%/7*,#*%4,77%>?@@@?@AA?BCDC1 Item 93657
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G,+7*%&2%O&8$*8$#
Safety .................................................2
Specifications .....................................7
Setup ..................................................8
Operation ...........................................10
Maintenance ......................................11
Parts List and Diagram ......................14
Warranty ............................................16
QFKMLMR%EHNSITE%FMU%U6;LMLGLIME
This is the safety a-lert symbol. It is used to alert you to
potential personal injury hazards. Obey all safety messages
that follow this symbol to avoid possible injury or death.
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.
Addresses practices not related to personal injury.
LNJIKGFMG%EF;6GH%LMEGKPOGLIME
R*8*(,7%E,2*$V%Q,(8"83#
% QFKMLMR%K*,9%,77%#,2*$V%),(8"83#%,89%"8#$('4$"&8#1%%%
Failure to follow the warnings and instructions may result in electric shock, fire and/or
serious injury.
E,W*%,77%),(8"83#%,89%"8#$('4$"&8#%2&(%2'$'(*%(*2*(*84*1
The warnings and precautions discussed in this manual cannot cover all possible conditions
and situations that may occur. It must be understood by the operator that common sense and
caution are factors which cannot be built into this product, but must be supplied by the operator.

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Q&(X%F(*,
a. Y**/%$.*%)&(X%,(*,%
47*,8%,89%)*77%7"3.$*91%%Cluttered
benches and dark areas increase
the risks of electric shock, fire,
and injury to persons.
b. U&%8&$%&/*(,$*%$.*%4&5/(*##&(%"8%
*Z/7&#"W*%,$5&#/.*(*#=%#'4.%,#%"8%$.*%
/(*#*84*%&2%27,55,+7*%7"<'"9#=%3,#*#%
&(%9'#$1%%Compressor motors produce
sparks which may ignite the dust or fumes.
c. Y**/%+V#$,89*(#=%4."79(*8=%,89%
W"#"$&(#%,),V%)."7*%&/*(,$"83%$.*%$&&71%%
Distractions are able to result in
the loss of control of the tool.
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a. O&5/(*##&(%/7'3#%5'#$%5,$4.%
$.*%&'$7*$1%%M*W*(%5&9"2V%$.*%/7'3%
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/7'3#%)"$.%3(&'89*9%4&5/(*##&(#1%
Standard plugs and matching outlets
will reduce risk of electric shock.
b. U&%8&$%*Z/&#*%4&5/(*##&(%$&%(,"8%&(%)*$%
4&89"$"&8#1%%Water entering a compressor
will increase the risk of electric shock.
c. U&%8&$%,+'#*%$.*%4&(91%%M*W*(%
'#*%$.*%4&(9%2&(%'8/7'33"83%$.*%
4&5/(*##&(1%%Y**/%4&(9%,),V%2(&5%
.*,$=%&"7=%#.,(/%*93*#%&(%5&W"83%
/,($#1% Damaged or entangled cords
increase the risk of electric shock.
J*(#&8,7%E,2*$V
a. E$,V%,7*($1%%Q,$4.%).,$%V&'%,(*%
9&"83%,89%'#*%4&55&8%#*8#*%).*8%
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$&&7%)."7*%$"(*9%&(%'89*(%$.*%"827'*84*%
&2%9('3#=%,74&.&7=%&(%5*9"4,$"&81%%
A moment of inattention while operating the
tool increases the risk of injury to persons.
b. U&%8&$%&W*((*,4.1%%Y**/%/(&/*(%
2&&$"83%,89%+,7,84*%,$%,77%$"5*#1%%
Proper footing and balance enables better
control of the tool in unexpected situations.
c. J(*W*8$%'8"8$*8$"&8,7%#$,($"831%%
68#'(*%$.*%#)"$4.%"#%"8%$.*%&22?/&#"$"&8%
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d. P#*%#,2*$V%*<'"/5*8$1 Wear a
NIOSH-approved respirator
during use.
e. F7),V#%)*,(%*V*%/(&$*4$"&81
Wear ANSI-approved
safety goggles.
O&5/(*##&(%P#*%,89%O,(*
a. U&%8&$%'#*%$.*%4&5/(*##&(%"2%$.*%
#)"$4.%9&*#%8&$%$'(8%"$%&8%,89%&221% Any
compressor that cannot be controlled with the
switch is dangerous and must be repaired.
b. U"#4&88*4$%$.*%4&5/(*##&(%2(&5%
$.*%/&)*(%#&'(4*%+*2&(*%5,X"83%,8V%
,9['#$5*8$#=%4.,83"83%,44*##&("*#=%
&(%#$&("831%%Such preventive safety
measures reduce the risk of starting
the compressor accidentally.
c. E$&(*%,8%"97*%4&5/(*##&(%&'$%&2%$.*%(*,4.%
&2%4."79(*8%,89%9&%8&$%,77&)%/*(#&8#%
'82,5"7",(%)"$.%$.*%4&5/(*##&(%&(%$.*#*%
"8#$('4$"&8#%$&%&/*(,$*%"$1 A compressor is
dangerous in the hands of untrained users.
d. N,"8$,"8%$.*%4&5/(*##&(1%%Y**/%$.*%
4&5/(*##&(%47*,8%2&(%+*$$*(%,89%#,2*(%
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7'+("4,$"831%%Y**/%9(V=%47*,8%,89%2(**%
2(&5%&"7%,89%3(*,#*1%%Many accidents are
caused by a poorly maintained compressor.

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e. O.*4X%2&(%5"#,7"385*8$%&(%+"89"83%&2%
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.,W*%$.*%4&5/(*##&(%(*/,"(*9%+*2&(*%
'#*1 If damaged, have the tool serviced
before using. Many accidents are caused
by poorly maintained tools. There is a risk
of bursting if the tool is damaged.
f. P#*%$.*%4&5/(*##&(%"8%,44&(9,84*%)"$.%
$.*#*%"8#$('4$"&8#=%$,X"83%"8$&%,44&'8$%
$.*%)&(X"83%4&89"$"&8#%,89%$.*%)&(X%$&%
+*%/*(2&(5*91%%Use of the compressor for
operations different from those intended
could result in a hazardous situation.
E*(W"4*
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This will ensure that the safety of the tools are maintained.
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1. Risk of injury - do not direct air
stream at people or animals.
2. Risk of bursting - do not adjust
regulator higher than marked
maximum pressure of attachment.
3. Do not use to supply breathing air.
4. Keep compressor well-ventilated.
Do not cover compressor during use.
5. Do not leave compressor unattended
for an extended period while plugged in.
Unplug compressor after working.
6. Compressor head gets hot during operation.
Do not touch it or allow children nearby
during or immediately following operation.
7. Do not use the air hose to
move the compressor.
8. The use of accessories or attachments
not recommended by the manufacturer
may result in a risk of injury to persons.
9. All air line components, including hoses,
pipe, connectors, filters, etc., must be
rated for a minimum working pressure
of 150 PSI, or 150% of the maximum
system pressure, whichever is greater.
10. Air hose fittings may get hot during use.
Allow fittings to cool before disconnecting.
11. Industrial applications must
follow OSHA guidelines.
12. This product is not a toy.
Keep it out of reach of children.
13. Operate unit on level surface.
14. Maintain labels and nameplates on the tool.
These carry important safety information.
If unreadable or missing, contact
Harbor Freight Tools for a replacement.
15. People with pacemakers should
consult their physician(s) before use.
Electromagnetic fields in close proximity to
heart pacemaker could cause pacemaker
interference or pacemaker failure.
%EF!6%G]6E6%LMEGKPOGLIME1

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EV5+&7%U*2"8"$"&8#
EV5+&7 J(&/*($V%&(%E$,$*5*8$
JEL Pounds per square
inch of pressure
O;N Cubic Feet per Minute flow
EO;N Cubic Feet per Minute flow
at standard conditions
MJG National pipe thread, tapered
EV5+&7 J(&/*($V%&(%E$,$*5*8$
MJE National pipe thread, straight
WARNING marking concerning
Risk of Eye Injury.
Wear ANSI-approved
eye protection.
WARNING marking concerning
Risk of Respiratory Injury.
Wear NIOSH-approved respirator.
WARNING marking concerning
Risk of Explosion.

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1. Tools marked with “Grounding Required”
have a three wire cord and three prong
grounding plug. The plug must be
connected to a properly grounded outlet.
If the tool should electrically malfunction
or break down, grounding provides a low
resistance path to carry electricity away
from the user, reducing the risk of electric
shock. _E**%^?J(&83%J7'3%,89%I'$7*$1`
2. The grounding prong in the plug is connected
through the green wire inside the cord to the
grounding system in the tool. The green wire
in the cord must be the only wire connected
to the tool’s grounding system and must
never be attached to an electrically “live”
terminal. _E**%^?J(&83%J7'3%,89%I'$7*$1`
3. The tool must be plugged into an appropriate
outlet, properly installed and grounded in
accordance with all codes and ordinances.
The plug and outlet should look like those in
the preceding illustration.
_E**%^?J(&83%J7'3%,89%I'$7*$1`
6Z$*8#"&8%O&(9#
1. Grounded tools require a three
wire extension cord.
2. As the distance from the supply outlet
increases, you must use a heavier gauge
extension cord. Using extension cords with
inadequately sized wire causes a serious
drop in voltage, resulting in loss of power
and possible tool damage. _E**%G,+7*%F1`
3. The smaller the gauge number of the wire,
the greater the capacity of the cord. For
example, a 14 gauge cord can carry a higher
current than a 16 gauge cord. _E**%G,+7*%F1`
4. When using more than one extension cord
to make up the total length, make sure
each cord contains at least the minimum
wire size required. _E**%G,+7*%F1`
5. If you are using one extension cord for more
than one tool, add the nameplate%amperes
and use the sum to determine the required
minimum cord size. _E**%G,+7*%F1`
6. If you are using an extension cord
outdoors, make sure it is marked with the
suffix “W-A” (“W” in Canada) to indicate
it is acceptable for outdoor use.

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7. Make sure the extension cord is
properly wired and in good electrical
condition. Always replace a damaged
extension cord or have it repaired by a
qualified electrician before using it.
8. Protect the extension cords from sharp
objects, excessive heat, and damp or wet
areas.
GFST6%F-%%K6OINN6MU6U%NLMLNPN%QLK6%RFPR6%
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cBf Bdf CBf >ddf >Bdf
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 - - -
b%S,#*9%&8%7"5"$"83%$.*%7"8*%W&7$,3*%9(&/%$&%2"W*%W&7$#%,$%>Bdg%&2%$.*%
(,$*9%,5/*(*#1
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Electrical Rating 120VAC / 2A
Motor Speed 1,750 RPM
Power Cord 6'
Maximum Air Pressure 58 PSI
Air Outlet 1/8" - 27 NPS
Air Output 0.5 CFM @ 20 PSI

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$."#%/(&9'4$1
M&$*- For additional information regarding the parts listed in the following
pages, refer to the Assembly Diagram near the end of this manual.
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1. Designate an area that is clean and
well-lit. The work area must not
allow access by children or pets to
prevent distraction and injury.
2. Before operating, make sure Compressor
is set up in a well-ventilated area, on a
flat, level, solid surface well away from
any flammable objects, such as drapes.
3. Keep at least 12″ of space around
Compressor to allow for air circulation.
4. Route Power Cord from Compressor to
grounded wall outlet, along a safe path,
without creating a tripping hazard or exposing
the Power Cord to possible damage.
5. Insert Power Cord into grounded outlet.
6. Connect one end of Air Hose to
Air Outlet of Compressor.
7. Connect other end of Air Hose to Air
Inlet of Airbrush (not included).
8. Turn on Power Switch and inspect
air connections for leaks.
9. Turn off and unplug Compressor,
then repair any leaks found.

Page 10 ;&(%$*4.8"4,7%<'*#$"&8#=%/7*,#*%4,77%>?@@@?@AA?BCDC1 Item 93657
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U&%8&$%,9['#$%&(%$,5/*(%)"$.%,8V%4&8$(&7%&(%4&5/&8*8$%"8%,%),V%8&$%#/*4"2"4,77V%*Z/7,"8*9%
)"$."8%$."#%5,8',71%%L5/(&/*(%,9['#$5*8$%4,8%(*#'7$%"8%$&&7%2,"7'(*%&(%&$.*(%#*("&'#%.,k,(9#1
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Should this occur, turn Power Switch off. Wait
until the Compressor cools. Then, turn Power
Switch on to resume work.
1. Insert Power Cord plug into grounded outlet.
2. Connect one end of Air Hose to
Air Outlet of Compressor.
3. Connect an Airbrush (not included)
to the other end of Air Hose.
M&$*- Use this Compressor only with
Airbrushes; do not use this Compressor with
any other type of painting equipment.
4. Turn the Power Switch on.
5. Adjust air pressure by lifting the Pressure
Regulator, turning it until proper pressure
is attained, then pressing it back down.
6. When finished using the Compressor,
turn its Power Switch off. Release any
remaining air, then disconnect the Airbrush.
7. Perform maintenance on the
Compressor according to the
instructions on the following pages.
8. Perform maintenance on the
Airbrush according to Airbrush
manufacturer’s instructions.

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M&$*- These procedures are in addition
to the regular checks and maintenance
explained as part of the regular operation
of the Compressor and air-operated tool.
1. S6;IK6%6FO]%PE6= inspect the general
condition of the Compressor. Check for:
• loose screws,
• misalignment or binding of moving parts,
• damaged air supply hose,
• cracked or broken parts, and
• any other condition that may
affect its safe operation.
2. F;G6K%6FO]%PE6-
a. Drain Water Trap:
• With Compressor running, drain moisture
by depressing Drain Valve at bottom of
Water Trap. Moisture will be forced out.
• Turn off and disconnect Compressor
from its power source.
b. Wipe Compressor with clean cloth.
3. 6!6KH%G]K66%NIMG]E-
Clean the Water Trap filter by
blowing with compressed air.
4. QFKMLMRl%%L2%$.*%#'//7V%4&(9%
&2%$."#%O&5/(*##&(%"#%9,5,3*9=%
"$%5'#$%+*%(*/7,4*9%&87V%+V%,%
<',7"2"*9%#*(W"4*%$*4.8"4",81
E$&(,3*
Store Compressor in a dry, secure area out of reach of children.

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The motor does
not work.
1. No electrical power.
2. Damaged power cord.
3. Electrical wiring within
the unit is defective.
4. Power switch is defective.
1. Plug power cord into a working,
120VAC, grounded, electrical outlet.
2. Have a qualified service
technician replace power cord.
3. Have a qualified service technician
replace electrical wiring.
4. Have a qualified service technician
replace power switch.
The motor runs,
but it makes
irregular noises or
a knocking noise.
1. Bearing is loose or damaged.
2. Screws in the connection
rod are loose.
1. Have a qualified service
technician replace bearing.
2. Tighten screws, or replace
them if necessary.
Not enough pressure
when painting
or spraying.
1. Loose air connection(s).
2. Air hose is damaged.
3. Screws on cylinder
cover are loose.
1. Check all air connections, and
tighten them if necessary.
2. Replace air hose.
3. Tighten screws.
Motor runs properly,
but no air pressure or
lack of air delivery.
1. Valve plate is loose or out of
place.
2. Retainer ring is damaged
after excessive use
at high pressure.
1. Open the front cover and make
sure the valve plate is in the proper
position. Tighten screws if necessary.
2. Have a qualified service technician
replace the retainer ring.
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Page 13;&(%$*4.8"4,7%<'*#$"&8#=%/7*,#*%4,77%>?@@@?@AA?BCDC1Item 93657
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JT6FE6%K6FU%G]6%;ITTIQLMR%OFK6;PTTH
THE MANUFACTURER AND/OR DISTRIBUTOR HAS PROVIDED THE PARTS LIST AND
ASSEMBLY DIAGRAM IN THIS MANUAL AS A REFERENCE TOOL ONLY. NEITHER THE
MANUFACTURER OR DISTRIBUTOR MAKES ANY REPRESENTATION OR WARRANTY OF
ANY KIND TO THE BUYER THAT HE OR SHE IS QUALIFIED TO MAKE ANY REPAIRS TO
THE PRODUCT, OR THAT HE OR SHE IS QUALIFIED TO REPLACE ANY PARTS OF THE
PRODUCT. IN FACT, THE MANUFACTURER AND/OR DISTRIBUTOR EXPRESSLY STATES
THAT ALL REPAIRS AND PARTS REPLACEMENTS SHOULD BE UNDERTAKEN BY CERTIFIED
AND LICENSED TECHNICIANS, AND NOT BY THE BUYER. THE BUYER ASSUMES ALL RISK
AND LIABILITY ARISING OUT OF HIS OR HER REPAIRS TO THE ORIGINAL PRODUCT OR
REPLACEMENT PARTS THERETO, OR ARISING OUT OF HIS OR HER INSTALLATION OF
REPLACEMENT PARTS THERETO.
K*4&(9%J(&9'4$\#%E*(",7%M'5+*(%]*(*-%
M&$*- If product has no serial number, record month and year of purchase instead.
M&$*- Some parts are listed and shown for illustration purposes only, and are not available
individually as replacement parts. Specify UPC 193175319562 when ordering parts.

Page 14 ;&(%$*4.8"4,7%<'*#$"&8#=%/7*,#*%4,77%>?@@@?@AA?BCDC1 Item 93657
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J,($#%T"#$%
Part U*#4("/$"&8 Qty
1 Screw 4
2 Washer 8
3 Handle 1
4 Cylinder Head 1
5 O-Ring 1
6 Pressure Switch 1
7 Check Valve 1
8 Cylinder Block 1
9 O-Ring 1
10 Cylinder 1
11 Screw 1
12 Valve Plate 1
13 Screw 1
14 Piston Plate 1
15 Piston Ring 1
16 Piston Rod 1
17 Bearing 1
18 Crankshaft 1
19 Front Body 1
20 Paper Pad 1
Part U*#4("/$"&8 Qty
21 Front Cover 1
22 Bearing 2
23 Stator 1
24 Rotor 1
25 Rear Body 1
26 Power Switch 1
27 Condenser 1
28 Screw 4
29 Rear Cover 1
30 Screw 8
31 Power Cord 1
32 Line Button 1
33 Nipple 2
34 Water Trap/Pressure Regulator 1
35 Pressure Gauge 1
36 Foot 4
37 Pressing Wire Hat 1
38 Snap Ring 1
39 Grommet 1
40 Air Hose (not shown) 1

Page 15;&(%$*4.8"4,7%<'*#$"&8#=%/7*,#*%4,77%>?@@@?@AA?BCDC1Item 93657
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32
31
26
37
30
29
23
28 25
39
27
1
3
4
35
33
10
11
12
13
14
15
34
30
21
20
38
16
17
18
36
19
22
24
22
33
5
7
6
8
9
2

T"5"$*9%Dd%U,V%Q,((,8$V
Harbor Freight Tools Co. makes every effort to assure that its products meet high quality
and durability standards, and warrants to the original purchaser that this product is free from
defects in materials and workmanship for the period of 90 days from the date of purchase.
This warranty does not apply to damage due directly or indirectly, to misuse, abuse, negligence
or accidents, repairs or alterations outside our facilities, criminal activity, improper installation,
normal wear and tear, or to lack of maintenance. We shall in no event be liable for death,
injuries to persons or property, or for incidental, contingent, special or consequential damages
arising from the use of our product. Some states do not allow the exclusion or limitation of
incidental or consequential damages, so the above limitation of exclusion may not apply to you.
THIS WARRANTY IS EXPRESSLY IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS.
To take advantage of this warranty, the product or part must be returned to us with
transportation charges prepaid. Proof of purchase date and an explanation of the complaint
must accompany the merchandise. If our inspection verifies the defect, we will either repair or
replace the product at our election or we may elect to refund the purchase price if we cannot
readily and quickly provide you with a replacement. We will return repaired products at our
expense, but if we determine there is no defect, or that the defect resulted from causes not
within the scope of our warranty, then you must bear the cost of returning the product.
This warranty gives you specific legal rights and you may also
have other rights which vary from state to state.
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