Central Pneumatic 60637 Owner's Manual & Safety Instructions

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T a b l e o f Co n t e n t s

Safety ......................................................... 2

Setup .......................................................... 6

Specifications ............................................. 6

Operation ................................................... 10

Maintenance .............................................. 12

Parts List and Diagram .............................. 14

Warranty .................................................... 16

W ARNING S Y M B O L S AND D EF INIT IO NS

This is the safety alert 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.

S AF ET Y O PERAT IO N M AINT ENANCES ET UP

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IM PO RT ANT S AF ET Y INF O RM AT IO N

G e n e r a l S a f e t y W a r n i n g s

W ARNING Re a d a l l s a f e t y w a r n i n g s a n d i n s t r u c t i o n s .

Failure to follow the warnings and instructions may result in electric shock, fire and/or serious injury.

S a v e a l l w a r n i n g s a n d i n s t r u c t i o n s f o r f u t u r e r e f e r e n c e .

The warnings, precautions, and instructions discussed in this instruction 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.

1. W o r k a r e a s a f e t y
a. K e e p w o r k a r e a c l e a n a n d w e l l l i t .

Cluttered or dark areas invite accidents.

b. D o n o t o p e r a t e t h e Co m p r e s s o r i n e x p l o s i v e

a t m o s p h e r e s , s u c h a s i n t h e p r e s e n c e
o f f l a m m a b l e l i q u i d s , g a s e s o r d u s t .

Compressor motors produce sparks
which may ignite the dust or fumes.

c. K e e p c h i l d r e n a n d b y s t a n d e r s a w a y

f r o m a n o p e r a t i n g c o m p r e s s o r .

2. El e c t r i c a l s a f e t y
a. Co m p r e s s o r p l u g s m u s t m a t c h t h e o u t l e t .

Ne v e r m o d i f y t h e p l u g i n a n y w a y .
D o n o t u s e a n y a d a p t e r p l u g s w i t h g r o u n d e d
c o m p r e s s o r s . Standard plugs and matching

outlets will reduce risk of electric shock.

b. D o n o t e x p o s e c o m p r e s s o r t o r a i n o r w e t

c o n d i t i o n s . Water entering a compressor
will increase the risk of electric shock.

c. D o n o t a b u s e t h e c o r d . Ne v e r u s e t h e

c o r d f o r u n p l u g g i n g t h e c o m p r e s s o r .
K e e p c o r d a w a y f r o m h e a t , o i l , s h a r p e d g e s
o r m o v i n g p a r t s . Damaged or entangled

cords increase the risk of electric shock.

3. Pe r s o n a l s a f e t y
a. S t a y a l e r t , w a t c h w h a t y o u a r e d o i n g a n d

u s e c o m m o n s e n s e w h e n o p e r a t i n g t h i s
c o m p r e s s o r . D o n o t u s e t h i s c o m p r e s s o r
w h i l e y o u a r e t i r e d o r u n d e r t h e i n f l u e n c e
o f d r u g s , a l c o h o l o r m e d i c a t i o n . A moment

of inattention while operating a compressor
may result in serious personal injury.

b. Us e p e r s o n a l p r o t e c t i v e e q u i p m e n t .

Al w a y s w e a r ANS I- a p p r o v e d e y e
p r o t e c t i o n d u r i n g s e t u p a n d u s e .

c. Pr e v e n t u n i n t e n t i o n a l s t a r t i n g . En s u r e t h e

s w i t c h i s i n t h e o f f - p o s i t i o n b e f o r e c o n n e c t i n g
t o p o w e r s o u r c e o r m o v i n g t h e c o m p r e s s o r .

4. Co m p r e s s o r u s e a n d c a r e
a. D o n o t u s e t h e c o m p r e s s o r i f t h e s w i t c h

d o e s n o t t u r n i t o n a n d o f f . Any compressor
that cannot be controlled with the switch
is dangerous and must be repaired.

b. D i s c o n n e c t t h e p l u g f r o m t h e p o w e r s o u r c e

b e f o r e m a k i n g a n y a d j u s t m e n t s , c h a n g i n g
a c c e s s o r i e s , o r s t o r i n g t h e c o m p r e s s o r .

Such preventive safety measures reduce the
risk of starting the compressor accidentally.

c. S t o r e a n i d l e c o m p r e s s o r o u t o f t h e r e a c h

o f c h i l d r e n a n d d o n o t a l l o w p e r s o n s
u n f a m i l i a r w i t h t h e c o m p r e s s o r o r t h e s e
i n s t r u c t i o n s t o o p e r a t e i t . A compressor is

dangerous in the hands of untrained users.

d. M a i n t a i n t h e c o m p r e s s o r . K e e p t h e

c o m p r e s s o r c l e a n f o r b e t t e r a n d s a f e r
p e r f o r m a n c e . F o l l o w i n s t r u c t i o n s f o r
l u b r i c a t i n g a n d c h a n g i n g a c c e s s o r i e s .
K e e p d r y , c l e a n a n d f r e e f r o m o i l a n d g r e a s e .
Ch e c k f o r m i s a l i g n m e n t o r b i n d i n g o f m o v i n g
p a r t s , b r e a k a g e o f p a r t s a n d a n y o t h e r
c o n d i t i o n t h a t m a y a f f e c t t h e c o m p r e s s o r ’ s
o p e r a t i o n . If d a m a g e d , h a v e t h e c o m p r e s s o r
r e p a i r e d b e f o r e u s e . Many accidents are

caused by a poorly maintained compressor.

e. Us e t h e c o m p r e s s o r i n a c c o r d a n c e w i t h

t h e s e i n s t r u c t i o n s , t a k i n g i n t o a c c o u n t
t h e w o r k i n g c o n d i t i o n s a n d t h e w o r k t o
b e p e r f o r m e d . Use of the compressor for

operations different from those intended
could result in a hazardous situation.

5. S e r v i c e
a. H a v e y o u r c o m p r e s s o r s e r v i c e d b y a

q u a l i f i e d r e p a i r p e r s o n u s i n g o n l y i d e n t i c a l
r e p l a c e m e n t p a r t s . This will ensure that the

safety of the compressor is maintained.

S AF ET YO PERAT IO NM AINT ENANCE S ET UP

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Ai r Co m p r e s s o r S a f e t y W a r n i n g s

1. Ri s k o f f i r e o r e x p l o s i o n - d o n o t s p r a y f l a m m a b l e
l i q u i d i n a c o n f i n e d a r e a o r t o w a r d s a h o t s u r f a c e .
S p r a y a r e a m u s t b e w e l l - v e n t i l a t e d . D o n o t
s m o k e w h i l e s p r a y i n g o r s p r a y w h e r e s p a r k o r
f l a m e i s p r e s e n t . Ar c i n g p a r t s - k e e p c o m p r e s s o r
a t l e a s t 2 0 f e e t a w a y f r o m e x p l o s i v e v a p o r s ,
s u c h a s w h e n s p r a y i n g w i t h a s p r a y g u n .

2. Ri s k o f b u r s t i n g - d o n o t a d j u s t r e g u l a t o r h i g h e r
t h a n m a r k e d m a x i m u m p r e s s u r e o f a t t a c h m e n t .

3. Ri s k o f i n j u r y - d o n o t d i r e c t a i r
s t r e a m a t p e o p l e o r a n i m a l s .

4. D o n o t u s e t o s u p p l y b r e a t h i n g a i r .

5. D o n o t l e a v e c o m p r e s s o r u n a t t e n d e d

f o r a n e x t e n d e d p e r i o d w h i l e p l u g g e d i n .
Un p l u g c o m p r e s s o r a f t e r w o r k i n g .

6. K e e p c o m p r e s s o r w e l l - v e n t i l a t e d .
D o n o t c o v e r c o m p r e s s o r d u r i n g u s e .

7. Drain Tank daily and after use. Internal rust causes
tank failure and explosion.

8. Do not remove the valve cover or
adjust internal components.

9. Compressor head gets hot during operation.
Do not touch it or allow children nearby during
or immediately following operation.

10. Do not use the air hose to move the compressor.

11. Release the pressure in the
storage tank before moving.

12. The use of accessories or attachments not
recommended by the manufacturer may
result in a risk of injury to persons.

13. 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.

14. USE OF AN EXTENSION CORD IS NOT
RECOMMENDED. If you choose to use an
extension cord, use the following guidelines:

T AB L E A: RECO M M END ED M INIM UM W IRE

G AUG E F O R EX T ENS IO N CO RD S

( 1 2 0 V O L T )

NAM EPL AT E

AM PERES

( a t f u l l l o a d )

EX T ENS IO N CO RD

L ENG T H

25′ 50′ 100′ 150′

0 – 6 18 16 16 14

6.1 – 10 18 16 D o n o t u s e .

10.1 – 12 16 16 D o n o t u s e .

12.1 – 16 14 12 D o n o t u s e .

a. Make sure your extension cord

is in good condition.

b. Be sure to use an extension cord which is heavy

enough to carry the current your product will draw.
An undersized cord will cause a drop in line
voltage resulting in loss of power and overheating.
Table A shows the correct size to use depending
on cord length and nameplate ampere rating.
If in doubt, use the next heavier gauge. The
smaller the gauge number, the heavier the cord.

15. Industrial applications must follow OSHA guidelines.

16. Maintain labels and nameplates on the
compressor. These carry important safety
information. If unreadable or missing, contact
Harbor Freight Tools for a replacement.

17. This product is not a toy.
Keep it out of reach of children.

18. 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.

19. WARNING: The brass components of
this product contain lead, a chemical
known to the State of California to cause
birth defects (or other reproductive harm).
(California Health & Safety code § 25249.5, et seq.)

20. WARNING: Handling the cord on this product will
expose you to lead, a chemical known to the State
of California to cause cancer, and birth defects or
other reproductive harm. Wash hands after handling.
(California Health & Safety Code § 25249.5, et seq.)

S AV E T H ES E INS T RUCT IO NS .

S AF ET Y O PERAT IO N M AINT ENANCES ET UP

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G r o u n d i n g

T O PREV ENT EL ECT RIC S H O CK AND D EAT H
F RO M INCO RRECT G RO UND ING W IRE CO NNECT IO N:
Ch e c k w i t h a q u a l i f i e d e l e c t r i c i a n i f y o u a r e i n d o u b t a s t o w h e t h e r t h e o u t l e t i s p r o p e r l y g r o u n d e d .

D o n o t m o d i f y t h e p o w e r c o r d p l u g p r o v i d e d w i t h t h e c o m p r e s s o r .
Ne v e r r e m o v e t h e g r o u n d i n g p r o n g f r o m t h e p l u g . D o n o t u s e t h e c o m p r e s s o r i f t h e p o w e r c o r d o r p l u g i s
d a m a g e d . If d a m a g e d , h a v e i t r e p a i r e d b y a s e r v i c e f a c i l i t y b e f o r e u s e . If t h e p l u g w i l l n o t f i t t h e o u t l e t , h a v e a
p r o p e r o u t l e t i n s t a l l e d b y a q u a l i f i e d e l e c t r i c i a n .

1 1 0 - 1 2 0 V AC G r o u n d e d Co m p r e s s o r s : Co m p r e s s o r s w i t h T h r e e Pr o n g Pl u g s

1. In the event of a malfunction or breakdown,

grounding provides a path of least resistance for
electric current to reduce the risk of electric shock.
This compressor is equipped with an electric
cord having an equipment-grounding conductor
and a grounding plug. The plug must be
plugged into a matching outlet that is properly
installed and grounded in accordance
with all local codes and ordinances.

2. Do not modify the plug provided –

if it will not fit the outlet, have the proper
outlet installed by a qualified electrician.

3. Improper connection of the equipment-grounding

conductor can result in a risk of electric shock.
The conductor with insulation having an outer
surface that is green with or without yellow
stripes is the equipment-grounding conductor.
If repair or replacement of the electric cord or
plug is necessary, do not connect the equipment­grounding conductor to a live terminal.

4. Check with a qualified electrician or service

personnel if the grounding instructions are
not completely understood, or if in doubt as to
whether the compressor is properly grounded.

5. Use only 3-wire extension cords that have

3-prong grounding plugs and 3-pole receptacles
that accept the compressor’s plug.

6. Repair or replace damaged or worn cord immediately.

1 2 5 V AC 3 - Pr o n g Pl u g a n d O u t l e t

( f o r u p t o 1 2 5 V AC a n d u p t o 1 5 A)

G r o u n d i n g

Pi n

7. This compressor is intended for use on a
circuit that has an outlet that looks like the one
illustrated above in 1 2 5 V AC 3 - Pr o n g Pl u g
a n d O u t l e t . The compressor has a grounding
plug that looks like the plug illustrated above
in 1 2 5 V AC 3 - Pr o n g Pl u g a n d O u t l e t .

8. The outlet must be properly installed and grounded
in accordance with all codes and ordinances.

9. Do not use an adapter to connect this
compressor to a different outlet.

S y m b o l o g y

PS I

Pounds per square inch of pressure

CF M

Cubic Feet per Minute flow

S CF M

Cubic Feet per Minute flow
at standard conditions

NPT

National pipe thread, tapered

NPS

National pipe thread, straight

Double Insulated

Canadian Standards Association

Underwriters Laboratories, Inc.

V AC

Volts Alternating Current

A

Amperes

S AF ET YO PERAT IO NM AINT ENANCE S ET UP

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S p e c i f i c a t i o n s

Electrical Rating 120VAC / 60Hz / 2.6 A
Air Outlet Size

1

/4″ -18 NPT

Air Pressure

Shut-off 100 PSI
Restart 85 PSI

Air Tank Capacity 3 Gallons

Air Flow Capacity

0.6 SCFM @ 90 PSI
1 SCFM @ 40 PSI

Fuse Size 3A ( r e p l a c e o n l y w i t h s a m e s i ze a n d t y p e )

2 2 7 8 4 7

In s t r u c t i o n s f o r p u t t i n g i n t o u s e

Re a d t h e ENT IRE IM PO RT ANT S AF ET Y INF O RM AT IO N s e c t i o n a t t h e b e g i n n i n g o f t h i s
m a n u a l i n c l u d i n g a l l t e x t u n d e r s u b h e a d i n g s t h e r e i n b e f o r e s e t u p o r u s e o f t h i s p r o d u c t .

T O PREV ENT S ERIO US INJ URY F RO M ACCID ENT AL O PERAT IO N:
T u r n t h e Po w e r S w i t c h “O F F ” a n d u n p l u g t h e Ai r Co m p r e s s o r f r o m i t s e l e c t r i c a l
o u t l e t b e f o r e a s s e m b l i n g o r m a k i n g a n y a d j u s t m e n t s t o t h e c o m p r e s s o r .

No t e : For additional information regarding the parts listed in the following pages,

refer to the Assembly Diagram near the end of this manual.

F u n c t i o n s

F u s e

H o l d e r

O u t p u t Ai r

Pr e s s u r e

G a u g e

S w i t c h

T a n k Ai r

Pr e s s u r e

G a u g e

S a f e t y

V a l v e

Re g u l a t o r

K n o b

Ai r

O u t l e t

S AF ET Y O PERAT IO N M AINT ENANCES ET UP

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As s e m b l y / M o u n t i n g

1. Break in the new Air Compressor as follows:
a. Turn the Power Switch off and unplug the unit.

Insert a male coupler (sold separately)
into the female Quick Coupler and fully

open all regulators and valves.
b. Plug in the Power Cord.
c. Turn the Power Switch ON.
d. Let the unit run for 30 minutes.

Air will expel freely through the Coupler.
e. Turn the Power Switch OFF.
f. Unplug the Power Cord and

remove the male coupler.

2. Connect a regulator valve, an inline shut off valve

and a 1/4″ NPT air hose to the Quick Coupler

(all sold separately). The air hose must be long
enough to reach the work area with enough extra
length to allow free movement while working.

No t e : An i n - l i n e s h u t o f f b a l l v a l v e i s a n i m p o r t a n t
s a f e t y d e v i c e b e c a u s e i t c o n t r o l s t h e a i r s u p p l y e v e n
i f t h e a i r h o s e i s r u p t u r e d . T h e s h u t o f f v a l v e s h o u l d
b e a b a l l v a l v e b e c a u s e i t c a n b e c l o s e d q u i c k l y .

3. Depending on the tool which you will be
using with this compressor, you may need to
incorporate additional components, such as an
in-line oiler, a filter, or a dryer (all sold separately),
as shown on Figure A on page 8 and
Figure B on page 9. Consult your air
tool’s manual for needed accessories.

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F i g u r e A: Po r t a b l e Ai r S u p p l y S e t u p

G

A

E

E H

F

B

Non-lubricated

Tools

Lubricated

Tools

A

B

C

C

D

A

D e s c r i p t i o n F u n c t i o n

A Air Hose Connects air to tool

B Filter Prevents dirt and condensation from damaging tool or workpiece

C Regulator Adjusts air pressure to tool

D Lubricator (optional) For air tool lubrication

E Coupler and Plug Provides quick connection and release

F Leader Hose (optional) Increases coupler life

G Air Cleaner / Dryer (optional) Prevents water vapor from damaging workpiece

H Air Adjusting Valve (optional) For fine tuning airflow at tool

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F i g u r e B : S t a t i o n a r y Ai r S u p p l y S e t u p

N

L

L O

M

C

C

Non-lubricated

Tools

Lubricated

Tools

H

I

I

J

J

K

H

F

G

E

S lop e

F

F

B B

A

C

D

D e s c r i p t i o n F u n c t i o n

A Vibration Pads For noise and vibration reduction

B Anchor Bolts Secures air compressor in place

C Ball Valve Isolates sections of system for maintenance

D Isolation Hose For vibration reduction

E Main Air Line - 3/4″ minimum recommended Distributes air to branch lines

F Ball Valve To drain moisture from system

G Branch Air Line -1/2″ minimum recommended Brings air to point of use

H Air Hose Connects air to tool

I Filter Prevents dirt and condensation from damaging tool or workpiece

J Regulator Adjusts air pressure to tool

K Lubricator (optional) For air tool lubrication

L Coupler and Plug Provides quick connection and release

M Leader Hose (optional) Increases coupler life

N Air Cleaner / Dryer (optional) Prevents water vapor from damaging workpiece

O Air Adjusting Valve (optional) For fine tuning airflow at tool

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O p e r a t i n g In s t r u c t i o n s

Re a d t h e ENT IRE IM PO RT ANT S AF ET Y INF O RM AT IO N s e c t i o n a t t h e b e g i n n i n g o f t h i s
m a n u a l i n c l u d i n g a l l t e x t u n d e r s u b h e a d i n g s t h e r e i n b e f o r e s e t u p o r u s e o f t h i s p r o d u c t .

Co m p r e s s o r Ar e a S e t Up

1. Designate a work area that is clean and well-lit.
The work area must not allow access by
children or pets to prevent injury.

2. Locate the Compressor on a flat level surface to
ensure proper pump lubrication and to prevent

damage to the unit. Keep at least 12″ of space

around the unit to allow air circulation.

3. Route the power cord from the compressor
to the grounded wall outlet, along a safe path
without creating a tripping hazard or exposing
the power cord to possible damage.

G e n e r a l O p e r a t i o n

1. Turn red regulator knob counterclockwise completely.

2. Close the Drain Valve.

3. Plug the Air Compressor Power Cord into
a grounded 120 VAC electrical outlet.

4. Turn the Switch ON.

5. Allow the Air Compressor to build
up pressure until it cycles off.

No t e : At the beginning of the day’s first use of the
Air Compressor, check for air leaks by applying soapy
water to connections while the Air Compressor is
pumping and after pressure cut-out. Look for air bubbles.
If air bubbles are present at connections, tighten
connections. Do not use the Air Compressor
unless all connections are air tight, the extra air
leaking out will cause the compressor to operate
too often, increasing wear on the compressor.

No t e : As long as the Power Switch is ON, the operation
of the Air Compressor is automatic, controlled by an
internal pressure switch. The Compressor will turn on
automatically when the air pressure drops to 85 PSI,
and will turn off automatically when the
air pressure reaches 100 PSI.

W ARNING ! T O PREV ENT S ERIO US
INJ URY AND D EAT H F RO M EX PL O S IO N:
D o n o t a d j u s t t h e i n t e r n a l
p r e s s u r e s w i t c h . Any change to the

automatic pressure levels may cause
excess pressure to accumulate,
causing a hazardous situation.

6.

AF T ER the Compressor builds up enough

pressure and shuts off, adjust the Air Compressor’s
Regulator Knob so that the air output is enough
to properly power the tool, but the output will
not exceed the tool’s maximum air pressure at
any time. Turn the knob clockwise to increase
the pressure and counter-clockwise to decrease
pressure. Adjust the pressure gradually, while
checking the air output gauge to set the pressure.

S AF ET Y O PERAT IO N M AINT ENANCES ET UP