Grizzly T32339 User guide

MODEL T32339

20-GALLON 2 HP PORTABLE

AIR COMPRESSOR

OWNER'S MANUAL

(For models manufactured since 03/21)

COPYRIGHT © JUNE, 2022 BY GRIZZLY INDUSTRIAL, INC.

WARNING : NO PORTION OF THIS MANUAL MAY BE REPRODUCED IN ANY SHAPE

OR FORM WITHOUT THE WRITTEN APPROVAL OF GRIZZLY INDUSTRIAL, INC.

#CS22295 PRINTED IN USA

***Keep for Future Reference***

V1.06.22

This manual provides critical safety instructions on the proper setup,
operation, maintenance, and service of this machine/tool. Save this
document, refer to it often, and use it to instruct other operators.

Failure to read, understand and follow the instructions in this manual
may result in fire or serious personal injury—including amputation,
electrocution, or death.

The owner of this machine/tool is solely responsible for its safe use.
This responsibility includes but is not limited to proper installation in
a safe environment, personnel training and usage authorization,
proper inspection and maintenance, manual availability and compre­hension, application of safety devices, cutting/sanding/grinding tool
integrity, and the usage of personal protective equipment.

The manufacturer will not be held liable for injury or property damage
from negligence, improper training, machine modifications or misuse.

Some dust created by power sanding, sawing, grinding, drilling, and
other construction activities contains chemicals known to the State
of California to cause cancer, birth defects or other reproductive
harm. Some examples of these chemicals are:

• Lead from lead-based paints.

• Crystalline silica from bricks, cement and other masonry products.

• Arsenic and chromium from chemically-treated lumber.

Your risk from these exposures varies, depending on how often you
do this type of work. To reduce your exposure to these chemicals:
Work in a well ventilated area, and work with approved safety equip­ment, such as those dust masks that are specially designed to filter
out microscopic particles.

Table of Contents

INTRODUCTION ............................................................................................................................... 2

Contact Info
Manual Accuracy
Identification
Controls & Components
Machine Data Sheet

................................................................................................................................ 2

........................................................................................................................ 2

............................................................................................................................... 3

............................................................................................................. 4

................................................................................................................... 6

SECTION 1: SAFETY

Safety Instructions for Machinery
Additional Safety for Air Compressors

SECTION 2: POWER SUPPLY

Converting Voltage to 230V

SECTION 3: SETUP

Unpacking
Needed for Setup
Inventory
Site Considerations
Test Run

SECTION 4: OPERATIONS

Operation Overview.................................................................................................................. 19

Choosing Air Hose
Connecting Air Tool

SECTION 5: ACCESSORIES

SECTION 6: MAINTENANCE......................................................................................................... 24

Schedule
Draining Tank
Lubrication
Checking Air Filters
Checking/Adjusting Belt Tension
Checking for Leaks
Machine Storage

................................................................................................................................ 15

................................................................................................................................... 15

................................................................................................................................... 17

.................................................................................................................................. 24

................................................................................................................................ 25

....................................................................................................................... 8

............................................................................................... 8

..................................................................................... 10

...................................................................................................... 11

..................................................................................................... 13

....................................................................................................................... 15

..................................................................................................................... 15

.................................................................................................................. 16

........................................................................................................... 19

................................................................................................................... 20

.................................................................................................................. 21

......................................................................................................... 23

........................................................................................................................... 25

.................................................................................................................. 26

............................................................................................. 27

.................................................................................................................. 28

...................................................................................................................... 29

SECTION 7: SERVICE

Troubleshooting
Inspecting Check Valve
Adjusting Cut-In/Cut-Out Settings
Aligning Motor Pulley to Pump Flywheel

SECTION 8: WIRING

Wiring Safety Instructions
Wiring Diagram
Electrical Component Photos

SECTION 9: PARTS

........................................................................................................................................ 41

Pump
Tank & Motor
Labels & Cosmetics

................................................................................................................... 30

........................................................................................................................ 30

............................................................................................................ 33

...................................................................................................................... 38

........................................................................................................ 38

........................................................................................................................ 39

................................................................................................... 40

....................................................................................................................... 41

............................................................................................................................ 43

................................................................................................................. 45

............................................................................................ 35

.................................................................................. 36

We are proud to provide a high-quality owner’s
manual with your new machine!

We

instruc­tions, specifications, drawings, and photographs
in this manual. Sometimes we make mistakes, but
our policy of continuous improvement also means
that

you receive is

slightly different than shown in the manual

If you find this to be the case, and the difference
between the manual and machine leaves you
confused or unsure about something

check our

website for an updated version. W

current

manuals and

on our web-

site at

Alternatively, you can call our Technical Support
for help. Before calling, make sure you write
down the

serial number
from the machine ID label (see below). This
information is required for us to provide proper
tech support, and it helps us determine if updated
documentation is available for your machine.

INTRODUCTION

Contact Info

If you have questions, need help, need warranty
information, or need to order parts, contact MEGA
with the information below. Before contacting,
make sure you get the serial number and manu-
facture date from the machine ID label.

MEGA Compressor Technical Support

Phone: [phone]

Email: [e-mail]

We want your feedback on this manual. What did
you like about it? Where could it be improved?
Please take a few minutes to give us feedback.

Grizzly Documentation Manager

P.O. Box 2069

Bellingham, WA 98227-2069

Email: [e-mail]

Manual Accuracy

made every effort to be exact with the

sometimes the machine

.

,

e post

manual updates for free

www.grizzly.com.

manufacture date and

Manufacture Date

Serial Number

-2-

Model T32339 (Mfd. Since 03/21)

To reduce your risk of
serious injury, read this
entire manual BEFORE

Identification

Become familiar with the names and locations of the controls and features shown below to better understand
the instructions in this manual.

Belt Guard

Oil Sight

Glass

Exhaust

Tube

Regulator

Quick-Connect

Port

Pressure

Switch

Line Pressure

Gauge

Air Filter

(1 of 2)

Discharge

Line

Handle

Tank

Pressure

Gauge

Tank

Compressor

Pump

Motor Reset

Button

Motor

Safety Relief

Valve

Drain Valve

Model T32339 (Mfd. Since 03/21)

Wheel

(1 of 2)

Machine Foot

(1 of 2)

using machine.

-3-

Controls &

To reduce your risk of
serious injury, read this
entire manual BEFORE

Air Input

Components

using machine.

Like all machinery there is potential danger
when operating this machine. Accidents
are frequently caused by lack of familiarity
or failure to pay attention. Use this machine
with respect and caution to decrease the
risk of operator injury. If normal safety pre­cautions are overlooked or ignored, seri­ous personal injury may occur.

No list of safety guidelines can be com­plete. Every shop environment is different.
Always consider safety first, as it applies
to your individual working conditions. Use
this and other machinery with caution and
respect. Failure to do so could result in
serious personal injury, damage to equip­ment, or poor work results.

B

A

C

D

Figure 1. Upper air input components.

A. Air Filter (1 of 2): Cleans air entering com-

pressor pump.

B. Compressor Pump: Uses pistons to draw in

and compress air before transferring air into
tank.

C. Tank Pressure Gauge: Indicates pressure

of air in tank.

D. Exhaust Tube: Transfers compressed air

from pump to tank.

Refer to the following figures and descriptions to
become familiar with the basic controls and com­ponents of this machine. Understanding these
items and how they work will help you understand
the rest of the manual and minimize your risk of
injury when operating this machine.

-4-

E

F

Figure 2. Lower air input components.

E. Tank: Holds up to 20 gallons of pressurized

air.

F. Drain Valve: Drains built-up moisture from

tank when ball valve is opened.

Model T32339 (Mfd. Since 03/21)

Air Output/Delivery

G

H

J. Pressure Switch Lever: Toggles pressure

switch between OFF and AUTO modes.
Machine is OFF in OFF mode, and will con­tinue to pressurize when in AUTO mode.

K. Discharge Line: Releases air from compres-

sor pump and outlet line when tank pressure
exceeds 125 PSI (cut-out pressure).

I

Figure 3. Air output components.

G. Quick-Connect Port: Secures and releases

air hose when pressed in.

H. Regulator Knob: Adjusts pressure of air

delivered to quick-connect ports. Turn clock­wise to increase pressure and counterclock­wise to decrease pressure.

I. Line Pressure Gauge: Indicates pressure of

air at quick-connect ports.

Automatic Pressurization

L. Safety Relief Valve: Pops open to release

tank pressure in the event that pressure
switch fails to stop motor at cut-out pressure.

M. Pressure Switch: Turns motor ON when

tank pressure drops below 95 PSI (cut-in
pressure) and switch is in AUTO position.
Switch contains pressure relief valve that will
activate discharge line when tank pressure
exceeds 125 PSI (cut-out pressure) or pres­sure switch is turned OFF.

Motor Reset Button

N

J

M

Figure 4. Pressurization components.

Model T32339 (Mfd. Since 03/21)

K

Figure 5. Location of motor reset button.

L

N. Motor Reset Button: Restores power to

motor when pressed after overload. To reset,
place pressure switch lever in OFF position,
wait a few minutes for motor to cool, then
press motor reset button. If motor does not
reset, allow motor to cool longer, then try
again.

-5-

Machine Data Sheet

Customer Service #: [phone] · To Order Call: [phone] · Fax #: [phone]

MODEL T32339

20-GALLON 2 HP PORTABLE AIR COMPRESSOR

Product Dimensions:

...............................................................................................................................

Weight

(side-to-side) x Depth (front-to-back) x Height ........................................................................................24 x 23 x 44 in.

Width
Footprint

Shipping Dimensions:

Type
Content
Weight
Length

Electrical:

Power
Prewired
Full-Load
Minimum
Connection
Power
Power
Power
Plug
Included
Recommended
Switch

(Length x Width) ...............................................................................................................................

................................................................................................................................................................... Cardboard Box

...............................................................................................................................

...............................................................................................................................

x Width x Height ...............................................................................................................................

Requirement .......................................................................................................... 115V or 230V, Single-Phase, 60 Hz

Voltage ...............................................................................................................................

Current Rating .................................................................................................................. 15A at 115V, 7.5A at 230V

Circuit Size ........................................................................................................................20A at 115V, 15A at 230V

Type ...............................................................................................................................

Cord Included ............................................................................................................................................................Yes

Cord Length ...............................................................................................................................

Cord Gauge ...............................................................................................................................

Included ...............................................................................................................................

Plug Type ..............................................................................................................................................................5-15

Plug Type ....................................................................................................................................6-15 for 230V

Type ..................................................................................................................Pressure Switch w/Motor Reset Button

............................................. 183

........................................... Machine

............................................. 215

................................. 115V

...................... Cord

............................. 72

........................ 12

.........................................Yes

....21

......24

lbs.

x 14-1/2 in.

lbs.

x 31 x 47 in.

& Plug

in.

AWG

Motors:

Main

Horsepower
Phase
Amps
Speed
Type
Power

Bearings ............................................................................................................................. Shielded & Permanently Lubricated

Centrifugal

-6-

...............................................................................................................................

.................................................................................................................................................................... Single-Phase

...............................................................................................................................

...............................................................................................................................

...............................................................................................................................

Transfer ...............................................................................................................................

Switch/Contacts Type ...............................................................................................................................

Model T32339 (Mfd. Since 03/21)

..........................................2

.................15A

..........................................3450

............................ODP

at 115V, 7.5A at 230V

......................................Belt

HP

RPM

Capacitor-Start

...External

Main Specifications:

Operation Information

Compressor
Pump

Type ...............................................................................................................................

Max.

Airflow/Delivery (at 40 PSI) ........................................................................................................................ 7 SCFM

Airflow/Delivery (at 90 PSI) ........................................................................................................................ 6 SCFM

Max.
Cut-Out

Pressure ...............................................................................................................................

Cut-In
Duty

Cycle ...............................................................................................................................

Tank

Size ...............................................................................................................................

Number

Lubrication .....................................................................Grizzly Model T28041 or Equivalent Air Compressor Oil

Pump

Valve Type ...............................................................................................................................

Drain
Regulator

Output Port Information

Connection
Connection
Number
Hose

Included ...............................................................................................................................

Construction Information

...............................................................................................................................

Tank

...............................................................................................................................

Valves
Paint

Type/Finish ...............................................................................................................................

Style ...............................................................................................................................

Pressure ...............................................................................................................................

of Cylinders ........................................................................................................................................................2

...............................................................................................................................

Type ...............................................................................................................................

Size ...............................................................................................................................

of Connections ...............................................................................................................................

......................................Yes

............................................Steel

...........................Brass-Coated

...................Vertical

....................... One-Stage

..................125

.......................95

.................................50/50

......................... 20

................Ball

.........Quick-Coupler

.................. 1/4"

............................... No

....................Enamel

....................1

PSI
PSI

Gallons

Valve

NPT

Other Specifications:

Country of Origin ................................................................................................................................................................. USA

Warranty
Serial

Features:

20-Gallon
Ball-Valve
No-Flat
Included
Quick-Coupler

...............................................................................................................................

Number Location ...............................................................................................................................

Tank with Maximum Airflow of 6 SCFM at 90 PSI

Drain Control

Wheels and Feet for Portability

Air Regulator for Airflow Adjustment

Hose Connection

............................................ 1

................. ID

Year

Label

Model T32339 (Mfd. Since 03/21)

-7-

SECTION 1: SAFETY

For Your Own Safety, Read Instruction

Manual Before Operating This Machine

The purpose of safety symbols is to attract your attention to possible hazardous conditions.
This manual uses a series of symbols and signal words intended to convey the level of impor­tance of the safety messages. The progression of symbols is described below. Remember that
safety messages by themselves do not eliminate danger and are not a substitute for proper
accident prevention measures. Always use common sense and good judgment.

Indicates an imminently hazardous situation which, if not avoided,
WILL result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided,
COULD result in death or serious injury.

Indicates a potentially hazardous situation which, if not avoided,
MAY result in minor or moderate injury. It may also be used to alert
against unsafe practices.

Alerts the user to useful information about proper operation of the

NOTICE

machine to avoid machine damage.

Safety Instructions for Machinery

OWNER’S MANUAL. Read and understand this

owner’s manual BEFORE using machine.

TRAINED OPERATORS ONLY. Untrained oper­ators have a higher risk of being hurt or killed.
Only allow trained/supervised people to use this
machine. When machine is not being used, dis­connect power, remove switch keys, or lock-out
machine to prevent unauthorized use—especially
around children. Make your workshop kid proof!

DANGEROUS ENVIRONMENTS. Do not use
machinery in areas that are wet, cluttered, or have
poor lighting. Operating machinery in these areas
greatly increases the risk of accidents and injury.

MENTAL ALERTNESS REQUIRED. Full mental
alertness is required for safe operation of machin­ery. Never operate under the influence of drugs or
alcohol, when tired, or when distracted.

ELECTRICAL EQUIPMENT INJURY RISKS.
You can be shocked, burned, or killed by touching
live electrical components or improperly grounded
machinery. To reduce this risk, only allow qualified
service personnel to do electrical installation or
repair work, and always disconnect power before
accessing or exposing electrical equipment.

DISCONNECT POWER FIRST.
nect machine from power supply BEFORE mak­ing adjustments, changing tooling, or servicing
machine. This prevents an injury risk from unin­tended startup or contact with live electrical com­ponents.

EYE PROTECTION. Always wear ANSI-approved
safety glasses or a face shield when operating or
observing machinery to reduce the risk of eye
injury or blindness from flying particles. Everyday
eyeglasses are NOT approved safety glasses.

Always discon-

-8-

Model T32339 (Mfd. Since 03/21)

WEARING PROPER APPAREL. Do not wear
clothing, apparel or jewelry that can become
entangled in moving parts. Always tie back or
cover long hair. Wear non-slip footwear to reduce
risk of slipping and losing control or accidentally
contacting cutting tool or moving parts.

HAZARDOUS DUST. Dust created by machinery
operations may cause cancer, birth defects, or
long-term respiratory damage. Be aware of dust
hazards associated with each workpiece mate­rial. Always wear a NIOSH-approved respirator to
reduce your risk.

HEARING PROTECTION. Always wear hear­ing protection when operating or observing loud
machinery. Extended exposure to this noise
without hearing protection can cause permanent
hearing loss.

REMOVE ADJUSTING TOOLS. Tools left on
machinery can become dangerous projectiles
upon startup. Never leave chuck keys, wrenches,
or any other tools on machine. Always verify
removal before starting!

USE CORRECT TOOL FOR THE JOB. Only use
this tool for its intended purpose—do not force
it or an attachment to do a job for which it was
not designed. Never make unapproved modifica­tions—modifying tool or using it differently than
intended may result in malfunction or mechanical
failure that can lead to personal injury or death!

AWKWARD POSITIONS. Keep proper footing
and balance at all times when operating machine.
Do not overreach! Avoid awkward hand positions
that make workpiece control difficult or increase
the risk of accidental injury.

CHILDREN & BYSTANDERS. Keep children and
bystanders at a safe distance from the work area.
Stop using machine if they become a distraction.

GUARDS & COVERS. Guards and covers reduce
accidental contact with moving parts or flying
debris. Make sure they are properly installed,
undamaged, and working correctly BEFORE
operating machine.

FORCING MACHINERY. Do not force machine.
It will do the job safer and better at the rate for
which it was designed.

NEVER STAND ON MACHINE. Serious injury
may occur if machine is tipped or if the cutting
tool is unintentionally contacted.

STABLE MACHINE. Unexpected movement dur­ing operation greatly increases risk of injury or
loss of control. Before starting, verify machine is
stable and mobile base (if used) is locked.

USE RECOMMENDED ACCESSORIES. Consult
this owner’s manual or the manufacturer for rec­ommended accessories. Using improper acces­sories will increase the risk of serious injury.

UNATTENDED OPERATION. To reduce the
risk of accidental injury, turn machine OFF and
ensure all moving parts completely stop before
walking away. Never leave machine running
while unattended.

MAINTAIN WITH CARE. Follow all maintenance
instructions and lubrication schedules to keep
machine in good working condition. A machine
that is improperly maintained could malfunction,
leading to serious personal injury or death.

DAMAGED PARTS. Regularly inspect machine
for damaged, loose, or mis-adjusted parts—or
any condition that could affect safe operation.
Immediately repair/replace BEFORE operating
machine. For your own safety, DO NOT operate
machine with damaged parts!

MAINTAIN POWER CORDS. When disconnect­ing cord-connected machines from power, grab
and pull the plug—NOT the cord. Pulling the cord
may damage the wires inside. Do not handle
cord/plug with wet hands. Avoid cord damage by
keeping it away from heated surfaces, high traffic
areas, harsh chemicals, and wet/damp locations.

EXPERIENCING DIFFICULTIES. If at any time
you experience difficulties performing the intend­ed operation, stop using the machine! Contact our
Technical Support at [phone].

Model T32339 (Mfd. Since 03/21)

-9-

Additional Safety for Air Compressors

Serious impact injury or death can occur from bursting tank, attachment tool, distribution
line, or hose. Contact with hot compressor parts can result in burns. Operating this tool in an
environment without proper ventilation or near combustible materials can lead to explosions
or fires. Eyes and other soft tissues can be easily injured by air streams and debris projected
by compressed air or attachment tools. To reduce the risk of these hazards, operator and
bystanders MUST completely heed hazards and warnings below.

TANK INTEGRITY. Inspect tank, attachment

tools, pump, air lines, and valves for rust, damage,
weakness, leaks, looseness, or excessive wear
and repair/replace damaged components before
operating. Replace a damaged tank immediately.
DO NOT attempt to weld on, modify, or repair tank.
Modifying tank can affect tank integrity and cause
tank to burst.

ATTACHM ENT TOO LS. Always wear ANSI­approved eye protection and any additional per­sonal protective equipment required by attach­ment tools. Pneumatic tools can propel objects
and debris at high speeds or even explode. Never
use damaged tools—they are even more likely to
rupture. DO NOT exceed pressure ratings of tools
or attachments as lines and seals may burst. Use
proper air hose for tool and confirm air hose is
long enough to reach work area without stretching.
Do not carry attachment tool with hand on trigger
to reduce risk of accidental firing. Always relieve
outlet air line and hose before attaching/removing
tools. Disconnect hose or tool from compressor
when not in use.

MODIFICATIONS. DO NOT adjust or remove
safety relief valve, pressure switch, or otherwise
modify machine. Do not install shut-off valve
between compressor pump and tank. Check, safe­ty, and pressure valves are adjusted at factory for
correct tolerances and abilities of compressor and
are designed to keep tank and other components
from bursting.

INTENDED USE. DO NOT use compressed air
as breathable air supply and DO NOT aim com­pressed air or air tools at body parts or people.
Compressed air can injure or propel debris into
eyes or other soft tissues. Do not use compres­sor to inflate low-pressure objects that are likely to
burst (like children’s toys).

DAILY MAINTENANCE. Test safety relief valve
daily to dislodge any blockages and confirm it is
working correctly. Drain moisture from tank daily to
prevent internal corrosion that could weaken tank.

DISTRIBUTION LINES. Use only stainless steel,
copper, or aluminum for air delivery/distribution
lines. NEVER use PVC because it cannot with­stand the pressure, heat, condensation, and oils of
compressed air and may shatter, creating danger­ous shrapnel.

VENTILATION. Only operate in well-ventilated
environment that is less than 100°F and keep com­pressor at least 18 inches from nearest wall. DO
NOT obstruct airflow to air filters and ventilation
openings. Regularly check and change air filters to
avoid buildup of impurities and reduce risk of fire.

COMBUSTION. Compressor motor, pressure
switch, and some pneumatic attachment tools
often produce sparks. Only operate compressor
in area free of combustible materials to prevent
fires and explosions. When spraying, locate air
compressor at least 20 feet from spray area, do
not smoke, and do not spray flammable mate­rial in confined area near flame/compressor. Turn
compressor OFF when unattended. Motor could
overheat and create fire hazard.

HOT PARTS. Discharge line and other compres­sor pump parts heat up during operation. Do not
touch these parts during or immediately following
operation to prevent burns.

MOVING AND SERVICING. Disconnect power,
allow compressor to cool, bleed air from system,
and disconnect attachment tools and hoses before
moving or servicing to prevent impact injuries, soft
tissue injuries, and burns.

-10 -

Model T32339 (Mfd. Since 03/21)

SECTION 2: POWER SUPPLY

Before installing the machine, consider the avail­ability and proximity of the required power supply
circuit. If an existing circuit does not meet the
requirements for this machine, a new circuit must
be installed. To minimize the risk of electrocution,
fire, or equipment damage, installation work and
electrical wiring must be done by an electrician or
qualified service personnel in accordance with all
applicable codes and standards.

or equipment damage
may occur if machine is
not properly grounded
and connected to power

The full-load current rating is the amperage a
machine draws at 100% of the rated output power.
On machines with multiple motors, this is the
amperage drawn by the largest motor or sum of all
motors and electrical devices that might operate
at one time during normal operations.

The full-load current is not the maximum amount
of amps that the machine will draw. If the machine
is overloaded, it will draw additional amps beyond
the full-load rating.

If the machine is overloaded for a sufficient length
of time, damage, overheating, or fire may result—
especially if connected to an undersized circuit.
To reduce the risk of these hazards, avoid over­loading the machine during operation and make
sure it is connected to a power supply circuit that
meets the specified circuit requirements.

For your own safety and protection of

Note: Circuit requirements in this manual apply to

a dedicated circuit—where only one machine will
be running on the circuit at a time. If machine will
be connected to a shared circuit where multiple
machines may be running at the same time, con­sult an electrician or qualified service personnel to
ensure circuit is properly sized for safe operation.

A power supply circuit includes all electrical
equipment between the breaker box or fuse panel
in the building and the machine. The power sup­ply circuit used for this machine must be sized to
safely handle the full-load current drawn from the
machine for an extended period of time. (If this
machine is connected to a circuit protected by
fuses, use a time delay fuse marked D.)

This machine can be converted to operate on a
power supply circuit that has a verified ground
and meets the requirements listed below. (Refer
to Voltage Conversion instructions for details.)

This machine is prewired to operate on a power
supply circuit that has a verified ground and meets
the following requirements:

Availability

Electrocution, fire, shock,

supply.

Full-Load Current Rating

Circuit Information

property, consult an electrician if you are
unsure about wiring practices or electrical
codes in your area.

Full-Load Current Rating at 115V...... 15 Amps

Full-Load Current Rating at 230V

Model T32339 (Mfd. Since 03/21)

.... 7.5 Amps

Circuit Requirements for 115V

Nominal Voltage .................... 110V, 115V, 120V

..........................................................60 Hz

Cycle
Phase
Power Supply Circuit
Plug/Receptacle

........................................... Single-Phase

......................... 20 Amps

............................. NEMA 5-15

Circuit Requirements for 230V

Nominal Voltage .........20 8V, 2 20V, 230V, 24 0V

..........................................................60 Hz

Cycle
Phase
Power Supply Circuit
Plug/Receptacle

........................................... Single-Phase

......................... 15 Amps

............................. NEMA 6-15

-11-

Improper connection of the equipment-grounding
wire can result in a risk of electric shock. The
wire with green insulation (with or without yellow
stripes) is the equipment-grounding wire. If repair
or replacement of the power cord or plug is nec­essary, do not connect the equipment-grounding
wire to a live (current carrying) terminal.

Check with a qualified electrician or service per­sonnel if you do not understand these grounding
requirements, or if you are in doubt about whether
the tool is properly grounded. If you ever notice
that a cord or plug is damaged or worn, discon­nect it from power, and immediately replace it with
a new one.

We do not recommend using an extension cord
with this machine.
cord, only use it if absolutely necessary and only
on a temporary basis.

Extension cords cause voltage drop, which can
damage electrical components and shorten motor
life. Voltage drop increases as the extension cord
size gets longer and the gauge size gets smaller
(higher gauge numbers indicate smaller sizes).

Any extension cord used with this machine must
be in good condition and contain a ground wire
and matching plug/receptacle. Additionally, it must
meet the following size requirements:

Grounding Requirements

This machine MUST be grounded. In the event
of certain malfunctions or breakdowns, grounding
reduces the risk of electric shock by providing a
path of least resistance for electric current.

it will not fit the outlet, have a qualified

For 115V operation: This machine is equipped

with a power cord that has an equipment-ground­ing wire and a grounding plug (see following fig­ure). The plug must only be inserted into a match­ing receptacle (outlet) that is properly installed
and grounded in accordance with all local codes
and ordinances.

GROUNDED

5-15 RECEPTACLE

Grounding Pin

GROUNDED

6-15 RECEPTACLE

Current Carrying Prongs

6-15 PLUG

Grounding Pin

Figure 7. Typical 6-15 plug and receptacle.

5-15 PLUG

Neutral Hot

Figure 6. Typical 5-15 plug and receptacle.

SHOCK HAZARD!
Two-prong outlets do not meet the grounding
requirements for this machine. Do not modify
or use an adapter on the plug provided—if

electrician install the proper outlet with a
verified ground.

For 230V operation: The plug specified under

“Circuit Requirements for 230V” on the previ­ous page has a grounding prong that must be
attached to the equipment-grounding wire on
the included power cord. The plug must only be
inserted into a matching receptacle (see following
figure) that is properly installed and grounded in
accordance with all local codes and ordinances.

-12-

Extension Cords

If you must use an extension

115V Minimum Gauge Size ..................12 AWG

230V Minimum Gauge Size

Maximum Length (Shorter is Better).......50 ft.

Model T32339 (Mfd. Since 03/21)

..................18 AWG

Converting Voltage

Run

Capacitor

30uF 370V

Run

Capacitor

30uF 370V

2.

Move brown motor wire from terminal 2 to

terminal 6 (see Figures 9–10).

to 230V

The voltage conversion MUST be performed by
an electrician or qualified service personnel.

The voltage conversion procedure consists of
rewiring the motor and installing the correct plug.
A wiring diagram is provided on Page 39 for your
reference.

IMPORTANT: If the diagram included on the
motor conflicts with the one on Page 39, the
motor may have changed since the manual was
printed. Use the diagram included on the motor
instead.

Items Needed Qty

Flat Head Screwdriver 1⁄4" or Wrench 1⁄4" ........... 1

Phillips Head Screwdriver #2
NEMA 6-15 Plug

To convert voltage to 230V:

............................ 1

................................................ 1

Note: Terminal 6 is an insulating pocket. You

can use wire nut or crimp instead, if desired.

3. Move white motor wire from terminal 4 to ter­minal 2 (see Figures 9–10).

Motor Wires

1

2

4

6

Figure 9. Motor wired for 115V power supply.

Remove (2) bolts shown in Figure 8 to

1.

remove motor wiring cover.

Figure 8. Location of motor wiring cover and

bolts.

Motor Wires

1

2

4

6

Figure 10. Motor wired for 230V power supply.

Install motor wiring cover.

4.

Model T32339 (Mfd. Since 03/21)

-13-

Remove screw shown in Figure 11 to remove

MOTOR 115V/230V

Run

Capacitor

30uF 370V

Start

Capacitor

189-227uF 165V

1

4

2

6

MOTOR 115V/230V

Run

Capacitor

30uF 370V

Start

Capacitor

189-227uF 165V

1

4

2

6

5.

pressure switch cover.

Pressure Switch

Cover

Connect (2) 6-15 plug power supply wires to

7.

LINE terminals, and ground wire to ground
terminal (see Figure 13).

Make sure incoming ground wire is
connected to correct terminal to ensure
machine will be properly grounded (see
"Ground Terminal" in Figure 13). An
ungrounded or improperly grounded
machine can cause electrocution if live
electrical wires make contact with frame or
other parts touched by operator.

Figure 11. Location of pressure switch cover

and screw.

6. Remove power supply wires from LINE termi­nals and ground wire shown in Figure 12 to
remove 5-15 plug.

Ground Wire

GND

Power

Supply

Wires

LINE

MOTOR

Hot

Neutral

Ground

PRESSURE

SWITCH

115 VAC

5-15 Plug

Figure 12. Location of wires to remove.

LEFOO LF10-4H

Hot

230

VAC

Hot

G

Ground

6-15 Plug

(As Recommended)

Ground Wire

Power

Supply

Wires

Figure 13. 6-15 plug installed.

PRESSURE

SWITCH

8. Install pressure switch cover.

Ground

Terminal

GND

LINE

MOTOR

-14-

Model T32339 (Mfd. Since 03/21)

SECTION 3: SETUP

The following is a list of items shipped with your
machine. Before beginning setup, lay these items
out and inventory them.

If any non-proprietary parts are missing (e.g. a
nut or a washer), we will gladly replace them; or
for the sake of expediency, replacements can be
obtained at your local hardware store.

This machine was carefully packaged for safe
transport. When unpacking, separate all enclosed
items from packaging materials and inspect them
for shipping damage.

,

please

at [phone].

IMPORTANT:

you are completely satisfied with the machine and
have resolved any issues between Grizzly or the
shipping agent. You MUST have the original pack-

aging to file a freight claim. It is also extremely
helpful if you need to return your machine later.

Unpacking

If items are damaged

call us immediately

Save all packaging materials until

Needed for Setup

The following items are needed, but not included,
for the setup/assembly of this machine.

Inventory

Inventory (Figure 14) Qty

A. Air Compressor .......................................... 1

A

Description Qty

• Safety Glasses ........................................... 1

• Air Compressor Oil SAE 30........ As Needed

• Hearing Protection ...................................... 1

This machine presents
serious injury hazards
to untrained users. Read
through this entire manu­al to become familiar with
the controls and opera­tions before starting the
machine!

Model T32339 (Mfd. Since 03/21)

Wear safety glasses during
the entire setup process!

Figure 14. Inventory.

NOTICE

If you cannot find an item on this list, care­fully check around/inside the machine and
packaging materials. Often, these items get
lost in packaging materials while unpack­ing or they are pre-installed at the factory.

-15-

Site Considerations

Weight Load

Refer to the
of your machine. Make sure that the surface upon
which the machine is placed will bear the weight
of the machine, additional equipment that may be
installed on the machine, and the heaviest work­piece that will be used. Additionally, consider the
weight of the operator and any dynamic loading
that may occur when operating the machine.

Space Allocation

Consider the largest size of workpiece that will
be processed through this machine and provide
enough space around the machine for adequate
operator material handling or the installation of
auxiliary equipment. With permanent installations,
leave enough space around the machine to open
or remove doors/covers as required by the main­tenance and service described in this manual.

See below for required space allocation.

Physical Environment

Extreme conditions for this type of machinery are

Place this machine near an existing power source.

other hazards. Make sure to leave enough space

Shadows, glare, or strobe effects that may distract

Machine Data Sheet for the weight

Children or untrained people
may be seriously injured by
this machine. Only install in an
access restricted location.

=

Connection

Electrical

The physical environment where the machine is
operated is important for safe operation and lon­gevity of machine components. For best results,
operate this machine in a dry environment that is
free from excessive moisture, hazardous chemi­cals, airborne abrasives, or extreme conditions.

generally those where the ambient temperature
range exceeds 41°–104°F; the relative humidity
range exceeds 20%–95% (non-condensing); or
the environment is subject to vibration, shocks,
or bumps.

Electrical Installation

Make sure all power cords are protected from
traffic, material handling, moisture, chemicals, or

around machine to disconnect power supply or
apply a lockout/tagout device, if required.

Lighting

Lighting around the machine must be adequate
enough that operations can be performed safely.

or impede the operator must be eliminated.

Wall

Min. 18" from

Obstructions

Figure 15. Minimum working clearances.

-16 -

23"

24"

Model T32339 (Mfd. Since 03/21)

Test Run

Once assembly is complete, test run the machine
to ensure it is properly connected to power and
safety components are functioning correctly.

If you find an unusual problem during the test run,
immediately stop the machine, disconnect it from
power, and fix the problem BEFORE operating the
machine again. The

table in the

SERVICE section of this manual can help.

setup instructions have been performed.
Operating an improperly set up machine

Serious injury or death can result from

Clear all setup tools away from machine.

2.

3. Locate machine in well-ventilated area at

least 18 inches from nearest wall or any
obstructions.

Move pressure switch lever to OFF position

4.
(see Figure 16).

Troubleshooting

The Test Run consists of verifying the following:

1) The compressor oil level is sufficient, 2) the
motor powers up and runs correctly, 3) the motor
and pump turn OFF when the cut-out pressure
is reached, and 4) the safety relief valve works
correctly.

using this machine BEFORE understanding
its controls and related safety information.
DO NOT operate, or allow others to operate,
machine until the information is understood.

DO NOT start machine until all preceding

Pressure

Switch

Lever

Figure 16. Location of pressure switch lever.

Turn drain valve handle all the way counter-

5.
clockwise to open (see Figure 17).

may result in malfunction or unexpect­ed results that can lead to serious injury,
death, or machine/property damage.

Eye injury hazard! Always
wear safety glasses when
handling pressurized air
system.

To test run machine:

Check oil level (refer to Lubrication on Page

1.
25 for instructions).

Model T32339 (Mfd. Since 03/21)

Drain Valve

Handle

Figure 17. Drain valve handle in open position.

6.

Connect machine to power supply.

7. Move pressure switch lever to AUTO posi­tion to turn machine ON and verify motor
operation.

Motor should run smoothly and without

unusual problems or noises.

-17-

Do not touch compressor
head or discharge line
during use or immediately
after compressor is active.
These hot parts may cause
burns.

8. After running compressor for 20 minutes,

move pressure switch to OFF position to turn
machine OFF.

Releasing air through safety relief valve
can be extremely loud. Protect hearing
with ANSI-approved hearing protection in
following step.

Turn machine OFF and slowly pull safety

11.

relief valve ring to bleed pressure from tank
(see Figure 19).

Turn drain valve handle to closed position.

9.

10. Turn machine ON and observe tank pressure

gauge (see Figure 18 ) while tank fills.

Tank

Pressure Gauge

Figure 18. Location of tank pressure gauge.

— If motor and pump turn OFF when tank

pressure reaches 125 PSI, then safety
feature of check valve is working correctly.
Proceed to Step 11.

Safety Relief

Valve

Figure 19. Location of safety relief valve.

— If safety relief valve bleeds pressure from

tank, and air stops leaking when pressure
is released, then safety feature of safety
relief valve is working correctly. Proceed
to Step 12.

— If safety relief valve is stuck or leaks after

releasing pressure, immediately turn OFF
machine and disconnect it from power.
Safety relief valve must be replaced before
further using machine.

— If motor and pump do not turn OFF when

tank pressure reaches 125 PSI, then
immediately turn OFF machine and dis­connect it from power. Safety feature of
check valve is NOT working properly and
must be replaced before further using
machine.

-18-

Open drain valve to drain moisture from tank.

12.

13. Check oil level (refer to Lubrication on Page
25 for instructions).

Congratulations! Test Run is complete.

Model T32339 (Mfd. Since 03/21)

SECTION 4: OPERATIONS

The purpose of this overview is to provide the nov­ice machine operator with a basic understanding
of how the machine is used during operation, so
the

discussed later

in this manual

Due to the generic nature of this overview, it is
not intended to be an instructional guide. To learn
more about specific operations, read this entire
manual,

training from experienced
machine operators
outside of this manual by reading "how-to" books,
trade magazines, or websites.

To reduce your risk of
serious injury, read this
entire manual BEFORE

Eye injury hazard! Always
wear safety glasses when

Operation Overview

3. Turns regulator knob all the way counter-

clockwise.

Puts on any additional personal protective

4.

equipment required by operation and attach­ment tool.

machine controls/components

are easier to understand.

seek additional

, and do additional research

using machine.

using this machine.

Connects machine to power and turns it ON.

5.

Allows machine to run until cut-out pressure

6.

has been reached and tank is full.

Turns regulator knob clockwise until line

7.

pressure gauge displays pressure lower than
or equal to air tool rating.

Connects air hose to quick-connect coupler.

8.

9. Connects attachment air tool to air hose.

10. While being careful not to create a tripping

hazard with hose, performs operation.

Turns machine OFF and disconnects it from

11.

power.

Uses safety relief valve to reduce tank pres-

12.

sure to less than 10 PSI.

Disconnects attachment tool from hose.

13.

14. Disconnects hose from compressor.

Do not touch compressor
head or discharge line
during use or immediately
after compressor is active.
These hot parts may cause

To complete a typical operation, the operator
does the following:

Puts on safety glasses.

1.

2. Pulls safety valve ring to test valve and clear

any obstructions.

Model T32339 (Mfd. Since 03/21)

burns.

15. Opens drain valve to drain any condensation

from tank.

Closes drain valve.

16.

If you are not experienced with this type
of machine, WE STRONGLY RECOMMEND
that you seek additional training outside of
this manual. Read books/magazines or get
formal training before beginning any proj­ects. Regardless of the content in this sec­tion, Grizzly Industrial will not be held liable
for accidents caused by lack of training.

-19 -

Choosing Air Hose

There are many options when it comes to hoses.
The most important aspects for an air compressor
are going to be length, diameter, and fittings. The
material of the hose is also an important consid­eration, but this will depend more on your applica­tion and preference.

Length

Consider your applications before deciding on a
hose length. Longer hoses, or hose connections
to extend hose length, can increase your mobility,
but will probably result in some pressure loss.

If your work area will be small, you may be able
to use a shorter hose without having to move the
compressor or stretch the hose. Never pull the
hose to move the compressor or put any unneces­sary stress on the hose, valves, fittings, or tank.

Fittings

Many hoses come with fittings installed. The sim­plest option is to find a hose with two fittings: one
that matches the compressor output port, and one
that matches your intended attachment tool. If the
hose does not match the port, a coupler may be
needed.

You will need to determine the size of the fit­tings and whether they are male or female (see
Figure 21). A male fitting can only attach to a
female fitting, and vice versa. There are also a
number of coupler/plug styles on the market, so
be sure the two match or you will likely not have
an airtight connection.

An air compressor becomes very hot during oper­ation, and the pressure switch and motor often
produce sparks. Some applications, like spraying
or sanding, involve flammable material that cre­ate a fire or combustion hazard when they are
performed too close to a compressor. The hose
length must allow for the air compressor to remain
at least 20 feet away from the operation.

Diameter

A larger inner diameter will allow for higher airflow
delivery. Refer to Airflow Delivery (CFM) on
Page 21 for more information. The higher CFM a
tool requires, the larger the inner diameter of the
hose will need to be (see Figure 20).

Airflow Delivery Required ID

0–3 CFM

3.1–5.9 CFM

6+ CFM

Figure 20. Recommended hose inner diameters.

1

⁄4" (3mm)

1

⁄4"–3⁄8" (3mm–10mm)

3

⁄8"+ (10mm+)

Male

Coupler

Male

Plug

Female

Coupler

Female

Plug

Figure 21. Example of male and female fittings.

1

The outlet port on the T32339 is a

⁄4" NPT female

quick-coupler (see Figure 22), so you will need a

1

⁄4" NPT male plug attached to the hose.

Quick-Coupler

-20-

Figure 22. Location of quick-coupler outlet port.

Model T32339 (Mfd. Since 03/21)

Connecting Air Tool

There are various air tools that can be connected
to your air compressor by means of an air hose,
and the setup will vary little across tools, but there
are a couple things to keep in mind before con­necting a tool or hose.

2

Operating Pressure (Pounds/Inch

Your second consideration should be the recom­mended or required operating pressure of your
tool. An air tool recommended for 70 PSI should
never be connected to a hose or system set to
higher than that operating pressure, as the tool or
valves could burst. A regulator allows tools with a
lower rating than the system to still be attached,
because the line can be adjusted to a safe level.

)

Airflow Delivery (CFM)

The first consideration when choosing an air tool
is whether or not the air delivery is compatible with
your compressor. Smaller compressors, capable
of less than 5 CFM, only supply enough pressure
for smaller air tools like nailers, staplers, chippers,
chisels, grinders, sanders, tire inflators, and paint
sprayers. Air hammers, impact wrenches, impact
hammers, and blow guns will probably require a
larger compressor capable of 10-110 CFM.

Duty Cycle

The duty cycle of your compressor will also have
an effect on how efficient the airflow delivery is.
Refer to Figure 23 for some common duty cycles
and what they mean.

Compressor can be used for up to half

50/50

60/40

75/25

85/15

100

of its cycle (spends same amount of
time resting as it does working).

Compressor can be used for up to 60%
of its cycle; spends 40% of time resting.

Compressor can be used for up to 75%
of its cycle; spends 25% of time resting.

Compressor can be used for up to 85%
of its cycle; spends 15% of time resting.

Compressor does not need to rest.
Engine/motor has a cooling component
allowing for constant air delivery.

Figure 23. Common duty cycles.

The Model T32339 has a regulator and pressure
gauge for controlling and observing line pressure.

Connecting Air Tool

Use the following steps as a guide for attaching
an air tool. As there are a wide variety of tool and
hose options, your connections may differ slightly
from this simple outline.

Items Needed Qty

Air Tool (Rated for 90 PSI or Less) ................... 1

Air Hose
Additional Connection Fittings

Always wear personal protective equipment
required by air tool you are using. Pneumatic
grinders, sanders, paint sprayers, etc.,
require a respirator to protect against
long-term respiratory damage. Prolonged
exposure to tools with high sound ratings
can result in hearing loss without the use of
hearing protection.

............................................................. 1

........... As Needed

Eye injury hazard! Always
wear safety glasses when
handling pressurized air
system.

Compressing air produces a lot of heat, so the
pump and motor require some resting time in
order to cool down. The "cycle" of an air compres­sor refers to how long it takes for the compressor
to be used and subsequently cooled. The duty
cycle dictates what percentage of the cycle you
can spend using air before it must rest.

Model T32339 (Mfd. Since 03/21)

-21-

To connect air tool:

Turn regulator knob (see Figure 24) all the

1.

way counterclockwise.

Regulator

Knob

Figure 24. Location of regulator knob.

Disconnecting Air Tool

Eye injury hazard! Always
wear safety glasses when
handling pressurized air
system.

Pressurized air escaping through valves/
fittings can be extremely loud. Protect
hearing with ANSI-approved hearing
protection in following steps.

To disconnect air tool:

Turn regulator knob (see Figure 24) all the

1.

way counterclockwise.

2. Push coupler sleeve toward compressor,
then insert air hose male plug into quick­connect coupler (see Figure 25).

Note: When plug is fully seated, coupler will

automatically lock it in place.

Quick-Connect

Coupler

Plug

Coupler

Sleeve

Figure 25. Plug inserted into coupler.

Disconnect air tool from hose.

2.

3. Push coupler sleeve toward compressor to
release hose plug (see Figure 26).

Note: Air will escape when connection is bro-

ken if tank is still pressurized.

Coupler

Plug

Sleeve

3.

Connect other end of hose to air tool.

Note: Refer to air tool instructions for speci-

fications, method of connection, and proper
use of tool.

-22-

Figure 26. Pushing coupler sleeve to release

plug.

Model T32339 (Mfd. Since 03/21)

ACCESSORIES

Installing unapproved accessories may

order online at www.grizzly.com or call 1-800-523-4777

SECTION 5: ACCESSORIES

cause machine to malfunction, resulting in
serious personal injury or machine damage.
To reduce this risk, only install accessories
recommended for this machine by Grizzly.

Basic Eye Protection

T20501—Face Shield Crown Protector 4"
T20502—Face Shield Crown Protector 7"
T20503—Face Shield Window
T20451—“Kirova” Clear Safety Glasses
T20456—DAKURA Safety Glasses, Black/Clear

NOTICE

Refer to our website or latest catalog for
additional recommended accessories.

H2499—Small Half-Mask Respirator
H3631—Medium Half-Mask Respirator
H3632—Large Half-Mask Respirator
H3635—Cartridge Filter Pair P100

Wood dust has been linked to nasal cancer and
severe respiratory illnesses. If you work around
dust everyday, a half-mask respirator can be a
lifesaver. Also compatible with safety glasses!

T20503

T20501

T20456

Figure 28. Assortment of basic eye protection.

H4978—Deluxe Earmuffs - 27dB
H4979—Twin Cup Hearing Protector - 29dB
T31622—Silicon Plugs, 3-Pk. - 20dB

Protect yourself comfortably with a pair of cush­ioned earmuffs or moldable ear plugs. Especially
important if you or employees operate for hours
at a time.

T20502

T20451

H4978

Figure 27. Half-mask respirator with disposable

cartridge filters.

Model T32339 (Mfd. Since 03/21)

H4979

Figure 29. Hearing protection.

T31622

-23-

SECTION 6: MAINTENANCE

Schedule

Compressor will turn ON
automatically when pres­sure switch is set to AUTO.
To reduce risk of shock/
accidental startup, always
disconnect machine from
power before adjustments,
maintenance, or service.

Eye injury hazard! Always
wear safety glasses when
maintaining pressurized air
system.

For optimum performance from this machine, this
maintenance schedule must be strictly followed.

Ongoing

To minimize your risk of injury and maintain proper
machine operation, shut down the machine imme­diately if you ever observe any of the items below,
and fix the problem before continuing operations:

• Low oil level.

• Damaged safety relief valve, pressure switch,
or drain valve.

Worn or damaged wires, cords, and plugs.

•

Tank rust/corrosion.

•

Any other unsafe condition.

•

Do not touch compressor
head or discharge line
during use or immediately
after compressor is active.
These hot parts may cause
burns. Allow compressor
to cool before handling.

Do not use flammable
cleanser to clean machine.
Compressor components
often produce sparks that
could ignite once machine
is connected to power and
turned ON.

Daily Maintenance

• Open drain valve to drain any condensation.

• Check oil level.

• Test function of safety relief valve and clear
any obstructions.

Releasing air through safety relief valve or
drain valve can be extremely loud. Protect
hearing with ANSI-approved hearing
protection when testing/draining valves.

Weekly Maintenance

• Check air filters.

• Clean/vacuum dust buildup off compressor.

Monthly Maintenance

• Check V-belt tension, damage, or wear.

Quarterly (3 Month/500 Hour) Maintenance

• Change compressor oil.

-24-

Semi-Annual (6 Month) Maintenance

• Check hoses/connections for leaks. If soapy
water at suspected leak creates bubbles, air
is escaping. Repair or replace affected parts.

Model T32339 (Mfd. Since 03/21)

Draining Tank

Some water may accumulate in the tank depend­ing on usage and humidity. Drain water from the
tank daily to increase the lifespan of the compres­sor and air tools and to prevent tank corrosion.

To drain tank:

DISCONNECT MACHINE FROM POWER!

1.

Releasing air through safety relief valve
can be extremely loud. Protect hearing
with ANSI-approved hearing protection in
following step.

T28041—Primrose Air Compressor Oil

This oil is a blend of the highest quality solvent
refined, paraffinic, and naphthenic petroleum min­eral oils and additives which prevent rust and
oxidation. It's formulated for clean, trouble-free
air compressor lubrication and effective control of
carbon deposits for longer life. 1 quart size.

2. Use safety relief valve to reduce tank pres­sure to less than 10 PSI.

Open drain valve (see Figure 30) to drain

3.

condensation from tank.

Drain Valve

Handle

Figure 30. Drain valve handle open.

Lubrication

Figure 31. T28041 236 Primrose Plus Air

Compressor Oil.

Checking Oil Level

Item Needed Qty

Model T28041 (or SAE 30 Equiv.) ..... As Needed

To check oil level:

1. Check oil sight glass (see Figure 32). Oil

level should be kept between bottom and top
of red circle.

Oil Fill

Plug

Oil Sight

Glass

The oil level in the Model T32339 should be
checked daily to prevent overheating and dam­age to the compressor. Change the oil every 500
hours of use.

Model T32339 (Mfd. Since 03/21)

Figure 32. Location of oil sight glass and oil fill

plug.

— If oil level is between top and bottom of red

circle, no additional oil is needed.

-25-

— If oil level is below bottom of red circle,

proceed to Step 2.

DISCONNECT MACHINE FROM POWER!

2.

3. Remove oil fill plug (see Figure 32 on
Page 25).

Add compressor oil until oil level is between

4.

bottom and top of red circle, then install fill
plug.

Changing Oil

Items Needed Qty

Drain Pan ........................................................... 1

Wrench or Socket 14mm
Wire Brush
Thread Sealing Tape
Model T28041 (or SAE 30 Equiv.)

......................................................... 1

................................... 1

......................... As Needed

............... 1 Qt.

Checking Air Filters

The air filters help prevent impurities and dust
from entering the compressor and reduces noise.
A dirty filter will result in a less efficient system
and could become a fire hazard.

To check air filters:

DISCONNECT MACHINE FROM POWER!

1.

Releasing air through safety relief valve
can be extremely loud. Protect hearing
with ANSI-approved hearing protection in
following step.

To change oil:

DISCONNECT MACHINE FROM POWER!

1.

2. Remove oil fill plug (see Figure 33).

Place drain pan under oil drain plug, then

3.

remove oil drain plug (see Figure 33).

Oil Fill

Plug

Oil Drain

Plug

Figure 33. Location of oil fill and oil drain plugs.

Clean drain plug threads.

4.

5. When oil is fully drained, wrap drain plug

threads with thread sealing tape, then install
drain plug.

Add compressor oil until oil level is between

6.

bottom and top of red circle on oil sight glass
(see Figure 32 on Page 25), then install fill
plug.

2. Use safety relief valve to reduce tank pres­sure to less than 10 PSI.

Remove wing nut shown in Figure 34 to

3.

remove filter cap and access filter.

Cap

Figure 34. Air filter assembly components.

— If filter is fairly clean and there has not

been a drop in efficiency of compressor,
replace cap. No replacement is required.

— If filter is dirty or clogged, or there has

been a drop in efficiency of compressor,
replace cap. Proceed to Step 4.

Replace old filter with new filter element (refer

4.

to Part #16 in Parts beginning on Page 41).

Repeat Step 3 for second filter.

5.

-26-

Model T32339 (Mfd. Since 03/21)

Checking/Adjusting

Belt Tension

3. Press belt in center to check belt tension. Belt

is correctly tensioned when there is approxi­mately
moderate pressure, as shown in Figure 36.

1

⁄4" deflection when it is pushed with

The V-belt transfers power from the motor to the
compressor pump. To ensure efficient transfer of
power, make sure the V-belt is always properly
tensioned and in good condition. If the V-belt is
worn, cracked, or damaged, replace it.

Belt and pulleys will be hot after operation.
Allow them to cool before handling.

Items Needed Qty

Wrenches or Sockets 13mm ............................. 2

Replacement Belt (Part #14)
Another Person

To check/adjust belt tension:

1.

DISCONNECT MACHINE FROM POWER!

2. Remove (4) hex bolts and fender washers
shown in Figure 35 to remove belt guard.

.................................................. 1

............. As Needed

Pulley

1

⁄4"

Deflection

Pulley

Figure 36. Checking V-belt tension.

— If V-belt is in good condition and there is

1

⁄4" of deflection, belt does not need to be

adjusted or replaced. Proceed to Step 7.

— If V-belt is cracked, torn, excessively worn,

damaged, or there is not 1⁄4" of deflection,
proceed to Step 4.

x 4

Belt Guard

Figure 35. Location of belt guard and fasteners.

Loosen (4) hex nuts shown in Figure 37, then

4.

push motor towards pump to release belt ten­sion.

— If V-belt is damaged, replace belt.

Pump

Motor

x 4

Figure 37. Location of belt tension components.

V-Belt

Model T32339 (Mfd. Since 03/21)

-27-

5. Have another person push motor away from
pump so there is approximately 1⁄4" deflection,
then tighten hex nuts from Step 4.

Perform Steps 3–4 of Aligning Motor Pulley

6.
to Pump Flywheel on Page 36 to check pul-

ley alignment.

Install belt guard.

7.

Fixing Leaks

Item Needed Qty

Wire Brush ......................................................... 1

Thread Sealing Tape or Pipe Dope

To fix leaks:

DISCONNECT MACHINE FROM POWER!

1.

... As Needed

Checking for Leaks

Air leaks will cause low air output and increase
the time the compressor must run.

Checking for Leaks

1. Disconnect tool and hose from compressor.

2. Turn ON compressor and allow tank to fill

until cut-out pressure is reached (125 PSI).

DISCONNECT MACHINE FROM POWER!

3.

4. Listen for sound of air to find possible leak.

— If you do not hear air escaping, and pres-

sure in tank does not change, there is no
leak.

— If you do hear air escaping, or pressure

in tank drops even with safety relief valve
and drain valve closed, proceed to Step 5.

Releasing air through safety relief valve
can be extremely loud. Protect hearing with
ANSI-approved hearing protection while
performing following step.

2. Use safety relief valve to reduce tank pres-

sure to less than 10 PSI.

Open drain valve to relieve any remaining air.

3.

4. Remove fitting or valve that is leaking.

5. Clean threads, apply thread sealing tape or

pipe dope to threads, then re-install part.

Note: If a fitting or valve continues to leak

after preceding steps, replace part.

Spray suspected air leak with soap and water

5.

solution and look for air bubbles.

— If bubbles do not form, repeat at different

location.

— If bubbles do form, proceed to Fixing

Leaks.

-28-

Model T32339 (Mfd. Since 03/21)

Machine Storage

All machinery will develop serious rust problems
and corrosion damage if it is not properly prepared
for storage. Use the steps in this section to ensure
that your machine remains in good condition.

To bring machine out of storage, perform the Test

Run beginning on Page 17.

Eye injury hazard! Always
wear safety glasses when
handling pressurized air
system.

To prepare machine for storage:

1. DISCONNECT MACHINE FROM POWER!

Releasing air through safety relief valve
can be extremely loud. Protect hearing with
ANSI-approved hearing protection while
performing following step.

2. Use safety relief valve to reduce tank pres-

sure to less than 10 PSI.

Open drain valve to drain any condensation

3.

from tank.

Disconnect air tool and hose from machine.

4.

Items Needed Qty

Cleaner/Degreaser ............................ As Needed

.................................................. As Needed

Rags
Tarp or Plastic Sheet

T23951—Blue Tarp 8' x 10'

Made of woven polyethylene, these tarps are
weather and tear resistant. They have UV lamina­tion, heat-sealed seams, grommets, and rein­forced edging with strong poly rope inside the
hem on all four sides.

......................................... 1

5. Clean machine.

Do not use a flammable
cleanser to clean machine.
Compressor components
often produce sparks that
could ignite once machine
is connected to power and
turned ON.

6.

Close drain valve.

7. Cover machine with tarp or plastic sheet that
will keep out dust and resist liquid or mois­ture. If machine will be stored in/near direct
sunlight, use cover that will block UV rays.

Figure 38. T23951 Blue Tarp 8' x 10'.

Model T32339 (Mfd. Since 03/21)

-29-

Review the troubleshooting procedures in this section if a problem develops with your machine. If you need

the

serial number and manufacture date of your machine before calling.

SECTION 7: SERVICE

replacement parts or additional help with a procedure, call our Technical Support. Note: Please gather

Troubleshooting

Motor & Electrical

Symptom Possible Cause Possible Solution

Machine does
not start, or
power supply
breaker
immediately
trips after
startup.

Machine
stalls or is
underpowered.

1. Tank already pressurized.

2. Incorrect power supply voltage or circuit size.

3. Plug at fault/wired incorrectly.

4. Pressure switch cut-in/cut-out settings have
been adjusted incorrectly.

5. Power supply circuit breaker tripped or fuse
blown.

6. Motor wires connected incorrectly.

7. Start capacitor at fault.

8. Centrifugal switch adjustment/contact points
at fault.

9. Wiring broken, disconnected, or corroded.

10. Tripped motor thermal overload; compressor
is exceeding its duty cycle.

11. Check valve components are dirty/damaged.

12. Pressure switch at fault.

13. Motor or motor bearings at fault.

1. Air filter(s) dirty/clogged.

2. Pump/motor have restricted airflow.

3. Belt slipping/pulleys misaligned.

4. Motor wires connected incorrectly.

5. Pressure switch cut-in/cut-out settings have
been adjusted incorrectly.

6. Plug at fault/wired incorrectly.

7. Pulley slipping on shaft.

8. Tripped motor thermal overload; compressor
is exceeding its duty cycle.

9. Crankcase oil is not correct type.

10. Run capacitor at fault.

11. Extension cord too long.

12. Check valve components are dirty/damaged.

1. Motor will not start if tank is fully pressurized.

2. Ensure correct power supply voltage and circuit size
(Page 11).

3. Test for good contacts/correct wiring (Page 39).

4. Adjust settings (Page 35). Do not exceed cut-in/cut­out pressures listed on data sheet (Page 6) or inside
pressure switch.

5. Ensure circuit is free of shorts. Reset circuit breaker or
replace fuse.

6. Correct motor wiring connections (Page 39).

7. Test/replace if at fault.

8. Adjust centrifugal switch/clean contact points. Replace
either if at fault.

9. Fix broken wires or disconnected/corroded
connections (Page 39).

10. Reduce load on compressor and allow longer cool
down periods.

11. Clean/replace check valve components (Page 33).

12. Turn compressor OFF, disconnect from power, and
empty tank. DO NOT USE until switch is replaced.

13. Replace motor.

1. Replace air filter(s) (Page 26).

2. Clean cylinder fins, motor fan, and vent area.

3. Clean/tension/replace belt (Page 27); ensure pulleys
are aligned (Page 36).

4. Correct motor wiring connections (Page 39).

5. Adjust settings (Page 35). Do not exceed cut-in/cut­out pressures listed on data sheet (Page 6) or inside
pressure switch.

6. Test for good contacts/correct wiring (Page 39).

7. Tighten/replace loose pulley/shaft.

8. Reduce load on compressor and allow longer cool
down periods.

9. Drain and replace with correct oil (Page 25).

10. Test/repair/replace.

11. Move machine closer to power supply; use shorter
extension cord.

12. Clean/replace check valve components (Page 33).

-30-

Model T32339 (Mfd. Since 03/21)

Motor & Electrical (Cont.)

Symptom Possible Cause Possible Solution

Machine
stalls or is
underpowered.

Machine has
vibration or
noisy operation.

Motor runs
continuously.

Pressure relief
valve stays
open and motor
will not stop
running.

13. Centrifugal switch/contact points at fault.

14. Motor or motor bearings at fault.

15. Worn valves or rings/compressor pump at
fault.

1. Motor or component loose.

2. Machine feet/wheels loose.

3. V-belt worn, loose, pulleys misaligned, or belt
slapping guard.

4. Pulley loose.

5. Motor fan rubbing on fan cover.

6. Centrifugal switch needs adjustment/at fault.

7. Motor bearings at fault.

8. Compressor pump at fault.

1. Machine is undersized.

2. Regulator needs to be adjusted for lower
airflow delivery.

3. Air leak in tank or delivery pipes.

4. Pressure switch at fault.

1. Pressure switch cut-in/cut-out settings have
been adjusted incorrectly.

2. Pressure switch at fault, unit is trying to
overpressurize tank.

3. Pressure relief valve at fault/relieving
pressure too early.

13. Adjust centrifugal switch/clean contact points. Replace
either if at fault.

14. Replace motor.

15. Rebuild/replace.

1. Replace damaged or missing bolts/nuts or tighten if
loose.

2. Tighten fasteners.

3. Inspect/replace belt (Page 27). Realign pulleys if
necessary (Page 36).

4. Secure pulley on shaft.

5. Fix/replace fan cover; replace loose/damaged fan.

6. Adjust/replace if at fault.

7. Test by rotating shaft; rotational grinding/loose shaft
requires bearing replacement.

8. Compressor piston rod/bearing/crankshaft is worn.
Rebuild or replace pump.

1. Use smaller attachment tool or larger air compressor.

2. Turn regulator knob counterclockwise to decrease line
PSI.

3. Check air tank, pipes, and all connections for leaks
(Page 28). Do not attempt to repair leaking/damaged
tank, only replace.

4. Turn compressor OFF, disconnect from power, and
empty tank. DO NOT USE until switch is replaced.

1. Adjust settings (Page 35). Do not exceed cut-in/cut­out pressures listed on data sheet (Page 6) or inside
pressure switch.

2. Turn compressor OFF, disconnect from power, and
empty tank. DO NOT USE until switch is replaced.

3. Replace.

Operation

Symptom Possible Cause Possible Solution

Air leaks from
pressure
switch.

Low pressure
in tank, or
tank pressure
drops after
compressor is

turned OFF.

Model T32339 (Mfd. Since 03/21)

1. Check valve components are dirty/damaged.

2. Pressure switch at fault.

1. Drain valve is open.

2. Air filter(s) dirty/clogged.

3. Regulator needs to be adjusted for lower
airflow delivery.

4. Pressure switch cut-in/cut-out settings have
been adjusted incorrectly.

5. Air leak in tank or delivery pipes.

6. Check valve components are dirty/damaged.

1. Clean/replace check valve components (Page 33).

2. Turn compressor OFF, disconnect from power, and
empty tank. DO NOT USE until switch is replaced.

1. Close drain valve.

2. Replace air filter(s) (Page 26).

3. Turn regulator knob counterclockwise to decrease line
PSI.

4. Adjust settings (Page 35). Do not exceed cut-in/cut­out pressures listed on data sheet (Page 6) or inside
pressure switch.

5. Check air tank, pipes, and all connections for leaks
(Page 28). Do not attempt to repair leaking/damaged
tank, only replace.

6. Clean/replace check valve components (Page 33).

-31-

Operation (Cont.)

Symptom Possible Cause Possible Solution

Low pressure
in tank, or
tank pressure
drops after
compressor is

turned OFF.

Air leaks from
air filter(s).

Compressor
does not build
pressure, or
does not reach
full pressure.

Air tools have
oily discharge.

Air tools
have watery
discharge or
get cold and
freeze up with
ice during use.

Air tool has low
supply pressure
but compressor
has sufficient
air pressure.

Safety relief
valve leaks.

7. Pressure relief valve releasing below 125
PSI.

8. Gasket(s) leaking.

9. Worn pump piston rings.

1. Check valve components are dirty/damaged.

2. Reed valve(s) not sealing.

1. Drain valve is open.

2. Tank needs to be drained.

3. Air filter(s) dirty/clogged.

4. Air leak in tank or delivery pipes.

5. Check valve components are dirty/damaged.

6. Reed valve(s) not sealing.

7. Head gasket or valve body gasket leaking.

8. Worn pump piston rings.

9. Broken crankshaft or connecting rod.

1. Tank needs to be drained.

2. Too much oil in crankcase.

3. In-line oiler is out of adjustment (if used).

4. In-line filter is damaged or missing (if used).

5. Crankcase oil is not correct type.

6. Compressor pump at fault.

1. Tank needs to be drained.

2. In-line water separator is full (if used).

3. Ambient environment has too much humidity.

1. Air hose is too long.

2. Regulator needs to be adjusted for higher
airflow delivery.

3. Machine is undersized.

4. In-line filter is damaged or clogged (if used).

5. In-line water separator is full (if used).

6. Pressure switch cut-in/cut-out settings have
been adjusted incorrectly.

7. Air leaks in hose.

8. Regulator at fault.

9. Pressure gauge(s) at fault.

1. Pressure switch cut-in/cut-out settings have
been adjusted incorrectly.

2. Safety relief valve at fault.

3. Pressure switch at fault.

7. Replace pressure relief valve.

8. Check gaskets on cylinder head assemblies, repair or
replace as needed.

9. Inspect and replace pump piston rings.

1. Clean/replace check valve components (Page 33).

2. Remove cylinder head and replace reed valve(s).

1. Close drain valve.

2. Open drain valve to drain condensation, then close.

3. Replace air filter(s) (Page 26).

4. Check air tank, pipes, and all connections for leaks
(Page 28). Do not attempt to repair leaking/damaged
tank, only replace.

5. Clean/replace check valve components (Page 33).

6. Remove cylinder head and replace reed valve(s).

7. Remove cylinder head and replace gasket(s).

8. Inspect and replace pump piston rings.

9. Replace or rebuild compressor pump.

1. Open drain valve to drain condensation, then close.

2. Drain oil to proper level (Page 25).

3. Adjust in-line oiler drip ratio or use correct viscosity oil.

4. Replace filter or in-line filter assembly.

5. Drain and replace with correct oil (Page 25).

6. Worn compressor piston, rings, or valves. Rebuild or
replace pump.

1. Open drain valve to drain condensation, then close.

2. Drain water separator.

3. Install in-line air dryer and water separator.

1. Use shorter hose.

2. Turn regulator knob clockwise to increase line PSI. DO
NOT exceed pressure rating of attached tool.

3. Use smaller attachment tool or larger air compressor.

4. Replace filter or in-line filter assembly.

5. Drain water separator.

6. Adjust settings (Page 35). Do not exceed cut-in/cut­out pressures listed on data sheet (Page 6) or inside
pressure switch.

7. Check air hoses and all connections for leaks
(Page 28).

8. Inspect regulator for leaks. Replace if at fault.

9. Replace pressure gauge(s).

1. Adjust settings (Page 35). Do not exceed cut-in/cut­out pressures listed on data sheet (Page 6) or inside
pressure switch.

2. Test/replace.

3. Turn compressor OFF, disconnect from power, and
empty tank. DO NOT USE until switch is replaced.

-32-

Model T32339 (Mfd. Since 03/21)

Operation (Cont.)

Symptom Possible Cause Possible Solution

Delivered air
is dirty or has
excessive
moisture.

Compressor
knocking.

Excessive
noise while
running.

Oil leaks onto
compressor or
floor.

1. Tank needs to be drained.

2. Delivery pipes are dirty (if used).

1. Air filter(s) dirty/clogged.

2. Crankcase oil is low.

3. Piston assembly loose.

1. Crankcase oil is not correct type. 1. Drain and replace with correct oil (Page 25).

1. Oil spilled when filling.

2. Air filter(s) dirty/clogged.

3. Too much oil in crankcase.

4. Crankcase oil is not correct type.

5. Oil fill plug/gasket is worn or damaged.

6. Pump gasket(s) worn or damaged.

7. Cylinder head cap screws loose.

8. Valve, plate, or ring is loose/damaged.

9. Damaged crankcase seal.

10. Damaged crankshaft.

1. Open drain valve to drain condensation, then close.

2. Remove delivery pipes, clean out and replace.

1. Replace air filter(s) (Page 26).

2. Add crankcase oil (Page 25).

3. Inspect and repair piston and connecting rod.

1. Wipe unit clean with non-flammable cleanser.

2. Replace air filter(s) (Page 26).

3. Drain oil to proper level (Page 25).

4. Drain and replace with correct oil (Page 25).

5. Replace gasket or fill plug.

6. Replace gasket(s).

7. Install cap screws with thread sealing tape.

8. Tighten or replace valve/plate/ring.

9. Replace crankcase or seal.

10. Repair/replace crankshaft.

Inspecting

Check Valve

The check valve allows the compressed air to
enter the tank and prevents it from flowing back
toward the pump. If the valve disc in the check
valve fails to work correctly, and the valve can
leak or prevent the compressor from pressurizing.

Items Needed Qty

Open-End Wrenches 14, 19, 23, 24mm ......1 Ea.

Pencil or Hex Wrench (6mm or Less)

Eye injury hazard! Always
wear safety glasses when
handling pressurized air
system.

............... 1

Releasing air through safety relief valve
can be extremely loud. Protect hearing with
ANSI-approved hearing protection while
performing following step.

2. Use safety relief valve to reduce tank pres-

sure to less than 10 PSI.

Open drain valve to release any remaining air

3.

(see Figure 39).

Drain Valve

Handle

To inspect check valve:

DISCONNECT MACHINE FROM POWER!

1.

Model T32339 (Mfd. Since 03/21)

Figure 39. Drain valve handle open.

-33-

4. Loosen exhaust tube nut shown in Figure 40
and carefully move exhaust tube away from
elbow.

Exhaust

Tube

Exhaust

Tube

Nut

— If valve does depress and spring back,

check valve is working correctly. Proceed
to Step 9.

— If valve does not depress and spring

back, replace check valve (refer to
Part #108 in Parts beginning on
Page 41) before proceeding to Step 9.

Elbow

Figure 40. Location of exhaust tube nut and

check valve elbow.

5. Remove check valve elbow (see Figure 41).

Loosen discharge line nut shown in Figure

6.
41 and carefully move discharge line away

from check valve.

Remove check valve from tank (see

7.
Figure 41).

Discharge

Line

Nut

Discharge

Line

Valve Disc

Figure 42. Location of valve disc (viewed from

front).

Valve Disc

(Depressed)

Figure 43. Pressing valve disc with tool.

Elbow

Figure 41. Location of discharge line nut, check

valve elbow, and check valve.

8. Press disc with pencil or hex wrench (see
Figures 42–43). Disc should depress when

pressed, then spring back to original position
when released.

-34-

Check Valve

Install check valve, check valve elbow, dis-

9.

charge line, and exhaust tube.

Model T32339 (Mfd. Since 03/21)

Adjusting Cut-In/

Cut-Out Settings

The pressure switch ensures the compressor will
turn ON when the tank pressure drops to approxi­mately 95 PSI (cut-in pressure), and will turn OFF
when the tank pressure reaches 125 PSI (cut-out
pressure). Should the pressure switch fail to turn
OFF the machine, the safety relief valve will open
shortly after the pressure exceeds 125 PSI and
prevent over-pressurization.

Cut-in and cut-out settings have been
factory set at proper PSI range. Only adjust
pressure switch settings if compressor
is cutting-in or cutting-out at incorrect
pressures. Tank could burst if filled with
more pressure than it is designed for.

Releasing air through safety relief valve
can be extremely loud. Protect hearing with
ANSI-approved hearing protection while
performing following step.

3. Use safety relief valve to reduce tank pres-

sure to less than 10 PSI.

Remove Phillips head screw shown in

4.
Figure 44 to remove pressure switch cover.

Pressure Switch

Cover

Eye injury hazard! Always
wear safety glasses when
handling pressurized air
system.

Adjusting Cut-In/Cut-Out Settings

If the minimum and maximum tank pressure set­tings both have to be raised or lowered at the
same time, then follow these steps.

Tools Needed Qty

Phillips Head Screwdriver #2 ............................ 1

Flat Head Screwdriver

To adjust cut-in/cut-out settings:

Operate compressor and record cut-in and

1.

cut-out pressures.

DISCONNECT MACHINE FROM POWER!

2.

1

⁄4" .................................. 1

Figure 44. Location of pressure switch cover

Phillips head screw.

5.

Adjust screw shown in Figure 45 to change

minimum and maximum tank pressure
settings.

Cut-In/

Cut-Out

Adjustment

Screw

Model T32339 (Mfd. Since 03/21)

Figure 45. Location of cut-in/cut-out adjustment

screw.

-35-

— Turn screw half turn clockwise to increase

both settings.

— Turn screw half turn clockwise to increase

tank pressure.

— Turn screw half turn counterclockwise to

decrease both settings.

Install pressure switch cover.

6.

7. Connect machine to power, start compres-

sor, and cycle compressor through cut-in/
cut-out pressures. If compressor does not
automatically turn OFF at 125 PSI, turn
machine OFF before pressure reaches 130
PSI. Adjust pressure switch settings until cut­out pressure is 125 PSI or lower.

Adjusting Only Cut-Out Setting

If only the maximum tank pressure setting needs
to be adjusted, then follow these steps. Keep
in mind that the allowable pressure differential
between cut-in pressure and cut-out pressure
must be kept between 30–40 PSI. Exceeding this
range can cause the compressor to overheat.

Tools Needed Qty

Phillips Head Screwdriver #2 ............................ 1

Flat Head Screwdriver

To adjust cut-in/cut-out settings:

Perform Steps 1–4 of Adjusting Cut-In/Cut-

1.
Out Settings on Page 35.

1

⁄4" .................................. 1

— Turn screw half turn counterclockwise to

decrease tank pressure.

Install pressure switch cover.

3.

4. Connect machine to power, start compres-

sor, and cycle compressor through cut-in/
cut-out pressures. If compressor does not
automatically turn OFF at 125 PSI, turn
machine OFF before pressure reaches 130
PSI. Adjust pressure switch settings until cut­out pressure is 125 PSI or lower.

Aligning

Motor Pulley to

Pump Flywheel

Pulley alignment is an important factor in power
transmission and belt life. The motor pulley should
be parallel to the pump flywheel and in the same
plane (coplanar) for optimum performance.

The motor pulley alignment can be adjusted by
loosening the set screws that secure it to the
motor shaft.

Adjust screw shown in Figure 46 to change

2.

maximum tank pressure setting.

Cut-Out

Adjustment

Screw

Figure 46. Location of cut-out only adjustment

screw.

-36-

Tools Needed Qty

Wrench or Socket 13mm ................................... 1

Straightedge 36"
Tape Measure
Hex Wrench 2mm

Belt, pulley, and flywheel will be hot after
operation. Allow them to cool before
handling.

To align motor pulley to pump flywheel:

DISCONNECT MACHINE FROM POWER!

1.

................................................ 1

.................................................... 1

.............................................. 1

Model T32339 (Mfd. Since 03/21)

2. Remove (4) hex bolts and fender washers
shown in Figure 47 to remove belt guard.

— If measurements are not all within 1⁄16" of

each other, pulley and flywheel are not
coplanar. Proceed to Step 5.

Pump

Motor

Pulley

Flywheel

x 4

Belt Guard

Figure 47. Location of belt guard and fasteners.

3. Place straightedge near V-belt so it is flush

against pump flywheel and it extends over
motor pulley (see Figure 48).

Pump

Flywheel

Motor

Pulley

Straightedge

Figure 48. Using straightedge to check motor

pulley alignment.

A

B C

Figure 49. Distances to measure.

5. Loosen (2) motor pulley set screws (see
Figure 50).

Figure 50. Location of motor pulley set screws.

6.

Adjust position of motor pulley on shaft until

distances from Step 4 are within 1⁄16" of each
other, then tighten set screws.

4. Measure distance between straightedge and
V-belt at "A", "B", and "C" locations shown in
Figure 49.

— If measurements are all within 1⁄16" of each

other, pulley and flywheel are coplanar
and do not need to be adjusted. Proceed
to Step 7.

Model T32339 (Mfd. Since 03/21)

Install belt guard.

7.

-37-

These pages are current at the time of printing. However, in the spirit of improvement, we may make chang­es to the electrical systems of future machines. Compare the manufacture date of your machine to the one

number and manufacture date of your

machine before calling. This information can be found on the main machine label.

machine

SECTION 8: WIRING

stated in this manual, and study this section carefully.

If there are differences between your machine and what is shown in this section, call Technical Support at
[phone] for assistance BEFORE making any changes to the wiring on your machine. An updated
wiring diagram may be available. Note: Please gather the serial

Wiring Safety Instructions

SHOCK HAZARD. Working on wiring that is con-

nected to a power source is extremely dangerous.
Touching electrified parts will result in personal
injury including but not limited to severe burns,
electrocution, or death. Disconnect the power
from the machine before servicing electrical com­ponents!

MODIFICATIONS. Modifying the wiring beyond
what is shown in the diagram may lead to unpre­dictable results, including serious injury or fire.
This includes the installation of unapproved after­market parts.

WIRE CONNECTIONS. All connections must
be tight to prevent wires from loosening during
machine operation. Double-check all wires dis­connected or connected during any wiring task to
ensure tight connections.

CIRCUIT REQUIREMENTS. You MUST follow
the requirements at the beginning of this manual
when connecting your machine to a power source.

WIRE/COMPONENT DAMAGE. Damaged wires
or components increase the risk of serious per­sonal injury, fire, or machine damage. If you notice
that any wires or components are damaged while
performing a wiring task, replace those wires or
components.

MOTOR WIRING. The motor wiring shown in
these diagrams is current at the time of printing
but may not match your machine. If you find this
to be the case, use the wiring diagram inside the
motor junction box.

CAPACITORS/INVERTERS. Some capacitors
and power inverters store an electrical charge for
up to 10 minutes after being disconnected from
the power source. To reduce the risk of being
shocked, wait at least this long before working on
capacitors.

EXPERIENCING DIFFICULTIES. If you are expe­riencing difficulties understanding the information
included in this section, contact our Technical
Support at [phone].

The photos and diagrams
included in this section are
best viewed in color. You
can view these pages in
color at www.grizzly.com.

-38-

Model T32339 (Mfd. Since 03/21)

Wiring Diagram

MOTOR 115V/230V

Hot

230

VAC

Hot

G

Ground

(As Recommended)

(Rewired for 230V)

6-15 Plug

GND

Start

Capacitor

189-227uF 165V

Motor Prewired
for 115V

Run

Capacitor

30uF 370V

1

2

4

6

Neutral

Hot

Ground

115 VAC

5-15 Plug

Model T32339 (Mfd. Since 03/21)

LINE

MOTOR

PRESSURE

SWITCH

LEFOO LF10-4H

Motor Rewired
for 230V

(Rewired for 230V)

READ ELECTRICAL SAFETY

ON PAGE 38!

1

2

4

6

-39-

Electrical Component Photos

Figure 53. Capacitor wiring.Figure 51. Pressure switch wiring.

-40-

Figure 52. Motor wiring (115V).

READ ELECTRICAL SAFETY

ON PAGE 38!

Model T32339 (Mfd. Since 03/21)

SECTION 9: PARTS

To order parts, contact MEGA by phone at (832) 415 -6995 or email at [e-mail].

Pump

15

9

14

11

12

12

11

16

21

19

10

20

23

13

16

22

22

28

29

30

31

25

26

27

27

45

44

43

42

39

38

8

7

6

5

2

3

4

1

36

41

40

37

35

32

33

34

Model T32339 (Mfd. Since 03/21)

-41-

REF DES CRIPTI ON QTY REF DE S CRIP TION QTY

Pump Parts List

1 CRANKCAS E 1 25 ELBO W FI TTI NG
2 OIL DRAIN PLUG 1 26 PISTON RING 51 X 2.5 X 4MM
3 O-RING 0.3 X 20 1 27 PISTON RING 51 X 2.5 X 2. 5MM
4 OIL SIGHT GLASS 1 28 PISTON
5 OIL FILL PLUG 1 29 PISTON PIN
6 CYLINDER GASKET (LOWER) 2 30 EXT RETA I NI NG RI NG 14 MM
7 CYLI NDER 2 31 PISTON ROD
8 FLAT WAS HER 8MM 8 32 BALL BEARING 6204-OPEN
9 HEX BOLT M8-1.25 X 20 8 33 HEX BOLT M8-1.25 X 35
10 CYLINDER GASKET (UPPER) 2 34 FLAT WAS HER 8MM
11 VALVE DISC 51MM 2 35 CRANKSHA FT
12 REED VALVE 10 X 47 X 0.3MM 4 36 BALL BEARING 6205-OPEN
13 REED VALVE GASKET (LOWER) 2 37 OIL SEAL
14 REED VALVE GASKET (UPPER) 2 38 CRANKCASE COVER GASKET
15 HEAD GASKET 2 39 CRANKCASE COVER
16 AIR FILTER ASSEMBLY 2 40 LOCK WASHER 8MM
19 HEX BOLT M6-1 X 40 8 41 HEX BOLT M8-1.25 X 20
20 FLAT WAS HER 6MM 8 42 BREATHE R CAP
21 T-ELB OW FI TTI NG 1 43 COMPRESSOR PULLEY
22 HEX NUT 3/4-16 2 44 FLA T WASHE R 8MM
23 FIN TUBE 1 45 HEX BOLT M8-1.25 X 35

1
2
4
2
2
4
2
1
4
4
1
1
1
1
1
4
4
1
1
1
1

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Model T32339 (Mfd. Since 03/21)

116

Tank & Motor

118

110

127

126

124

125

108

111

120

122

115

124

129

8

114

113

123

8

107

128

112

130

8

103

109

104

102

121

119

117

101

131

130

105

8

128

106

Model T32339 (Mfd. Since 03/21)

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REF DE S CRIPT I ON QTY REF DE S CRIPT I ON QTY

Tank & Motor Parts List

101 TANK 1 117 MOTOR CORD 12G 3W 12" 1
102 BALL DRAIN VALVE 1 118 POWER CORD 12G 3W 72" 5-15P 1
103 SHOULDER BOLT M14-2 X 20, 14 X 51 2 119 PRESSURE SWITCH LEFOO 1
104 TANK WHEEL 2 120 SAFETY RELIEF VALVE 1
105 RUBBER FOOT 2 121 STRAIN RELIEF TYPE-1 3/8" 2
106 FLANGE BOLT M8-1.25 X 30 2 122 TEE FITTING 180-DEG 1
107 VI BRATI ON DAMPI NG RI NG 4 123 MOTOR 2HP 115V/230V 1-PH 1
108 CHECK VALVE 1/2" FLARE 1 124 PRESSURE GAUGE 2
109 ELBOW FITTING 90-DEG 1 125 PIPE NIPPLE 1
110 EXHAUST TUBE 1 126 REGULATOR 1
111 PUMP DI SCHARGE LI NE 1 127 QUICK COUPLER 1/4" NPT 1
112 MOTOR PULLEY 1 128 HEX BOLT M8-1.25 X 16 4
113 SET SCREW M4-.7 X 10 1 129 HEX BOLT M8-1.25 X 30 4
114 V-BELT A43 1 130 HEX NUT M8-1. 2 5 2
115 HEX BOLT M6-1.25 X 16 4 131 TANK HANDLE 4
116 BELT GUARD 1

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Model T32339 (Mfd. Since 03/21)

202

204

208

A

SSEMBLED IN

201

WARNING!

DRAIN TANK

AFTER

EVERY USE!

Labels & Cosmetics

WITH US & GLOBAL PARTS

203

207

T32339

205

206

MODEL T32339

Specifications

Motor: 2 HP, 115V or 230V, 1-Ph, 60 Hz
Prewired Voltage: 115V
Full-Load Current: 15A @ 115V, 7.5A @ 230V
Pump Type: One-Stage
Max. Airflow @ 90 PSI: 6 CFM
Cut-Out Pressure: 125 PSI
Cut-In Pressure: 95 PSI
Duty Cycle: 50/50
Tank Size: 20 Gallons
Connection Size: 1/4" NPT
Weight: 183 lbs.

Mfd. for Grizzly in USA

20-GALLON 2 HP PORTABLE AIR COMPRESSOR

To reduce the risk of serious injury when using this machine:

1. Read and understand owner’s manual before operating.

2. Always wear ANSI-approved eye protection and any additional
personal protective equipment required by attachment tools.

3. Only plug power cord into a grounded outlet. Do not use with
extension cord or grounding adapter.

4. DO NOT use this air compressor for breathable air supply.

5. DO NOT touch compressor parts during or immediately
following operation. These parts will be hot.

6. Disconnect power and drain tank before moving or servicing.
DO NOT pull compressor by power cord or air hose.

7. DO NOT adjust or remove safety valve or modify machine.

8. Only operate in well-ventilated area free of combustible

S/N

materials. DO NOT smoke while spraying, and do not spray
flammable material in confined area near flame/compressor.

Date

Locate compressor at least 20 feet from spray area.

9. Only operate with all guards, covers, and parts in place.

10. Never leave machine running unattended.

WARNING!

11. Avoid entanglement with moving parts—tie back long hair, roll
up sleeves, and do not wear loose clothing, gloves, or jewelry.

12. DO NOT use if cord, plug, or any other electrical equipment

becomes damaged—promptly repair!

13. DO NOT stand on compressor or obstruct airflow to ventilation.

14. DO NOT exceed pressure rating of tools or attachments.

15. DO NOT aim compressed air at body parts or people.

16. Inspect compressor, air lines, valves, and tank for damage,

leaks, weakness, looseness, or excessive wear. Repair/replace

defective items before operating.

17. Drain moisture from tank after each use and promptly replace a
damaged tank. DO NOT attempt to weld on, modify, or repair
tank.

18. DO NOT expose to rain or use in wet locations.

19. DO NOT operate under influence of drugs or alcohol or when
tired.

20. Prevent unauthorized use by children or untrained users.

grizzly.com

REF PART # DES CRIPTION REF PART # DES CRIPTION

201 PT32339201 DRAIN TANK LABEL 205 PT32339205 MODEL NUMBER LABEL
202 PT32339202 ELECTRICITY LABEL 206 PT32339206 MACHINE ID LABEL
203 PT32339203 TOUCH-UP PAI NT, GRI ZZLY GREE N 207 PT32339207 GRIZZLY PRO LABEL
204 PT32339204 GRIZZLY.COM LABEL 208 PT32339208 ASSEMBLED IN USA LABEL

Safety labels help reduce the risk of serious injury caused by machine hazards. If any label comes
off or becomes unreadable, the owner of this machine MUST replace it in the original location
before resuming operations. For replacements, contact [phone] or www.grizzly.com.

Model T32339 (Mfd. Since 03/21)

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