PROPOINT 8475014 Owner's manual

Brand: PROPOINT

Model: 8475014

Category: Air compressors

Type: Owner's manual

8475014

Please read this manual before use.

V 3.4

80 Gallon 2-stage Cast Iron

Industrial Air Compressor

200-2915-F_1-10-19

User Manual

2For technical questions call 1-800-665-8685

8475014

V 3.4

80 Gallon 2-stage Cast Iron

Industrial Air Compressor

SPECIFICATIONS

Air Delivery 21 CFM @ 100 PSI

20 CFM @ 175 PSI

Air Tank Capacity 80 Gallons (302.8 litres)

Max. Air Pressure 175 PSI

Cut-In Pressure 145 PSI

Cut-Out Pressure 175 PSI

Compressor Type Belt Driven

Pump Style Cast Iron, Two Stage, Oil lubricated

Pump Oil Capacity 53.25 oz (1.57 litres)

Current Rating 31A

Voltage Rating 240V

Noise Rating 82 dB

INTRODUCTION

Designed for auto body shops, agricultural operations and industrial applications

FUNCTIONS

Industrial performance delivers maximum CFM @ 175 PSI; provides enough power to operate

more than one air tool or device at one time. Cast iron, industrial duty, two stage compressor

pump features hardened steel disc valves, oversized taper roller bearings, fully balanced cast

iron ﬂywheel and splash type lubrication. Industrial class, single phase electric motor equipped

with pre-wired and mounted magnetic starter. Uniquely designed metal belt guard improves

compressor pump cooling by as much as 60° F over other belt guard designs. Large capacity,

80 gallon ASME certiﬁed tank.

80 Gallon 2-stage Cast Iron Industrial Air Compressor

Visit www.princessauto.com for more information

8475014 V 3.4

SAFETY

WARNING! Read and understand all instructions before using this device. The operator must

follow basic precautions to reduce the risk of personal injury and/or damage to the equipment.

Keep this manual for safety warnings, precautions, operating or inspection and

maintenance instructions.

HAZARD DEFINITIONS

Please familiarize yourself with the hazard notices found in this manual. A notice is an alert that

there is a possibility of property damage, injury or death if certain instructions are not followed.

DANGER! This notice indicates an immediate and speciﬁc hazard that will result in severe

personal injury or death if the proper precautions are not taken.

WARNING! This notice indicates a speciﬁc hazard or unsafe practice that could result in severe

personal injury or death if the proper precautions are not taken.

CAUTION! This notice indicates a potentially hazardous situation that may result in minor or

moderate injury if proper practices are not taken.

NOTICE! This notice indicates that a speciﬁc hazard or unsafe practice will result in

equipment or property damage, but not personal injury.

WORK AREA

1. Operate in a safe work environment. Keep your work area clean, well lit and free

of distractions.

2. Keep anyone not wearing the appropriate safety equipment away from the work area.

3. Store devices properly in a safe and dry location. Keep devices out of the reach of children.

4. Do not install or use in the presence of ﬂammable gases or liquids.

Always operate compressor in a well-ventilated area. Locate the compressor at least 20 feet away

from work area if spraying ﬂammable materials.

PERSONAL SAFETY

WARNING! Wear personal protective equipment approved by the Canadian Standards

Association (CSA) or American National Standards Institute (ANSI).

1. Wear personal protection equipment such as ANSI Z87.1 approved safety goggles, respirator,

gloves, steel toe footwear or a hard hat as warranted by the work environment.

1.1 This device can cause hearing damage. Wear hearing protection with an appropriate

Noise Reduction Rating, especially if using it for extended periods.

2. Control the device, personal movement and the work environment to avoid personal injury or

damage to the device.

3. Do not operate any device when tired or under the inﬂuence of drugs, alcohol

or medications.

80 Gallon 2-stage Cast Iron Industrial Air Compressor

4For technical questions call 1-800-665-8685

8475014

V 3.4

SPECIFIC SAFETY PRECAUTIONS

1. Risk of Bursting

1.1 Serious injury or death may occur from an air tank explosion if the air tank is not

properly maintained or if modiﬁcations, alterations or repairs are attempted. Drain air

tank daily or after each use. Never drill into, weld, patch or modify the air tank. Replace

the tank immediately or replace the entire compressor, if a leak develops.

1.2 Serious injury or death may occur if modiﬁcations are made to the pressure switch,

safety relief valve or other components that control the tank pressure. Never make

adjustments to the components that control tank pressure. Do not make alterations to

the factory operating pressure settings. Check operation of the pressure relief valve on

a regular basis and never operate without a factory approved pressure relief valve.

1.3 Do not use plastic or pvc pipe for compressed air. Use only galvanized steel pipe and

ﬁttings for compressed air distribution lines.

1.4 Check the manufacturer’s maximum pressure rating for air tools and accessories.

Compressor outlet pressure must be regulated so as to never exceed the maximum

pressure rating of the tool.

2. Risk of Explosion or Fire

2.1 Serious injury may occur if a ﬁre is caused by overheating due to inadequate ventilation

or restrictions to any of the compressor’s ventilation openings. Never place objects

against or on top of an air compressor. Always operate air compressor at least 12 in.

away from any wall or obstruction. Always operate in a clean, dry and

well-ventilated area.

2.2 Unattended operation of this compressor could result in personal injury or property

damage. To reduce the risk of ﬁre, do not allow the compressor to operate unattended.

Always disconnect electrical power by turning the pressure switch to o and drain the

tank daily or after each use.

3. Risk of Burn

Serious burn injuries could occur from touching exposed metal parts such as the

compressor head or motor during operation and even after the compressor is shut

down for some time. Never touch any of the exposed metal parts during operation and

for an extended period of time after the air compressor has shut down. Do not attempt

maintenance on the unit until it has been allowed to completely cool.

4. Risk from Moving Parts

4.1 Serious injury may occur from moving parts such as the ﬂywheel or belts if they came

in contact with you or your clothing. Never operate the air compressor without the

protective cover installed. Replace a damaged protective cover immediately.

4.2 Serious injury may occur if repairs are attempted with damaged, missing or removed

protective guards, shrouds or missing covers. All repairs to the air compressor should be

made only by authorized or trained service personnel.

4.3 This unit starts automatically. Always shut o the compressor and bleed all pressure

from the system before servicing the compressor and when the compressor is not

in use.

5. Flying Objects

5.1 Serious injury may occur from loose debris being propelled at high speeds from the

compressed air stream. Always wear OSHA approved safety glasses to protect the eyes

during operation of the air compressor.

5.2 Never point the air stream or tools at any point of your body, other people or animals.

Debris and dust may be ejected without warning. Always turn o the air compressor

and drain tank pressure completely before attempting maintenance or attaching air

tools. Release pressure slowly from the system.

6. Risk of Damage to Air Compressor or Property

6.1 Failure to transport or operate the air compressor properly may result in major repair

expenses. Always run the compressor in a level, secure position that keeps it from

tipping or falling during use.

80 Gallon 2-stage Cast Iron Industrial Air Compressor

Visit www.princessauto.com for more information

8475014 V 3.4

6.2 Do not operate without an air ﬁlter or in a corrosive environment.

6.3 Always transport in a level position and use protective mats to keep truck beds clean,

etc. Fasten the compressor down securely. Pressure must be released from the tank

before transporting.

6.4 In cold climates, drain the tank after each use to avoid ice build up.

7. Stationary tanks should be level to distribute oil properly and prevent damage to the tank

and compressor. The tank’s feet should be shimmed so the pump base is level to within 1/8 in.

All feet must be supported prior to attaching to the ﬂoor.

7.1 Always operate the compressor in a stable secure position to prevent accidental

movement of the unit.

GENERAL SAFETY PRECAUTIONS

ELECTRICAL SAFETY

WARNING! All wiring should be performed by a qualiﬁed electrician.

1. Disconnect device from power source before cleaning, servicing, changing parts/accessories

or when not in use.

2. Protect yourself against electric shocks when working on electrical equipment. Avoid body

contact with grounded surfaces. There is an increased chance of electrical shock if your body

is grounded.

3. Failure to provide adequate grounding to this product could result in serious injury or

death from electrocution. Make certain that the electrical circuit to which the compressor is

connected provides proper electrical grounding, correct voltage and adequate

fuse protection.

4. Do not alter any parts of the device or accessories. All parts and accessories are designed

with built-in safety features that may be compromised if altered.

5. Make certain that power source conforms to requirements of your equipment.

6. To reduce the risk of electric shock, do not expose to rain or use on a wet surface. Store the

compressor indoors.

7. When wiring an electrically driven device, follow all electrical and safety codes, as well as the

most recent Canadian Electrical Code (CE) and Canadian Centre for Occupational Health and

Safety (CCOHS).

USE AND CARE OF THE DEVICE

1. Use the correct device for the job. This device was designed for a speciﬁc function. Do not

modify or alter this device or use it for an unintended purpose.

2. Conduct regular maintenance according to the schedule found in the Maintenance section.

PARTS IDENTIFICATION

WARNING! Do not operate the device if any part is missing. Replace the missing part before

operating. Failure to do so could result in a malfunction and personal injury.

Remove the parts and accessories from the packaging and inspect for damage. Make sure that all

items in the parts list are included.

Contents:

• Air Compressor

80 Gallon 2-stage Cast Iron Industrial Air Compressor

6For technical questions call 1-800-665-8685

8475014

V 3.4

BASIC AIR COMPRESSOR COMPONENTS

The basic components of the air compressor are the

electric motor, pump, pressure switch,

and tank.

The electric motor (A) powers the pump.

The pump (B) compresses the air and discharges it into

the tank. The tank (C) stores the compressed air.

The pressure switch (D) shuts down the motor and

relieves air pressure in the pump and transfer tube when

the air pressure in the tank reaches the cut–out pressure.

As compressed air is used and the pressure level in the

tank drops to the cut–in pressure, the pressure switch

restarts the motor automatically and the pump resumes

compressing air.

A magnetic starter (E) is required for the proper

operation of the compressor. A magnetic starter that is

not factory mounted on the compressor can be mounted

on the wall if desired. Mount as close to compressor

as possible. Size the wires, protect them with conduit and provide branch circuit protection per

electrical and safety codes, as well as the most recent Canadian Electrical Code (CE) and Canadian

Centre for Occupational Health and Safety (CCOHS).

COMPRESSOR CONTROLS

Main Power Disconnect

Install a main power disconnect switch in the power line to the compressor, near the compressor’s

location for ease of use and safety. The disconnect switch functions are selected manually. When

the switch is in the ON position, power is supplied to the compressor. The pressure switch will start

up or shut down the compressor automatically, based on air demand. Always select OFF when the

compressor is not being used. When turned OFF, the main power disconnect switch shuts o all

power to the compressor.

Magnetic Starter Reset Switch

WARNING! Ensure that all guards and shrouds are in place before pressing the reset switch to

restart the motor.

If the motor shuts down because of an overload, wait 10–15 minutes so the motor can cool down,

then press (never force) the reset switch on front of the magnetic starter to restart the motor.

A. PRESSURE SWITCH

WARNING! The pressure switch is preset. Do not attempt to tamper or adjust the setting.

The pressure switch controls the level of air pressure in the tank by automatically starting and

stopping the motor, as required to maintain the factory preset pressure level. The pressure switch

also automatically bleeds pressure from the pump head when the pump stops. This feature

eliminates back pressure in the pump, ensuring easier starting.

Fig.1

80 Gallon 2-stage Cast Iron Industrial Air Compressor

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8475014 V 3.4

B. TANK SAFETY VALVE

The tank safety valve is designed to discharge

tank pressure at a predetermined setting,

slightly above the compressor’s cut-out pressure

setting. The safety valve will protect against high

pressure ruptures if the pressure switch does not

shut o the compressor. Do not tamper with or

attempt to eliminate the tank safety valve.

C. PRESSURE RELIEF VALVE

The air compressor is equipped with a pressure

relief valve (located on the bottom of the

pressure switch) that is designed to release

compressed air from the compressor head and

outlet tube when the compressor reaches the

cut-out pressure setting or is shut o. The

pressure valve allows the motor to restart freely.

When the motor stops running, air will be heard

escaping from this valve for a few seconds. No

air should be heard leaking when the motor is running or after a brief release of air after reaching

the cut-out pressure.

Do not tamper with or attempt to eliminate the safety relief valve.

D. TANK PRESSURE GAUGE

This gauge measures the pressure level of the air stored in the tank. It is not adjustable by the

operator and does not indicate line pressure.

ASSEMBLY

LOCATION INSTALLATION

Locate the compressor according to the

following guidelines:

1. For optimum performance, locate the

compressor close to the power panel (see

section Main Power Panel) and as close as

possible to the place where the air will be

used. This ensures maximum power to the

compressor and maximum air pressure to the

air tool. If both of these conditions cannot

be met, it is better to locate the compressor

close to the power panel and use a longer

hose to reach the usage area.

2. The ﬂywheel side of the compressor must be

at least 12 inches (30.5 cm) from any wall or

obstruction, in a clean, well-ventilated area, to ensure sucient air ﬂow and cooling.

3. In cold climates, locate the compressor in a heated building to reduce problems with

lubrication, motor starting and freezing of water condensation.

4. The compressor must be level to ensure proper lubrication of the pump and good drainage

of the moisture in the tank.

5. Vibration pads under the tank’s feet are recommended.

Fig.2

Fig.3

80 Gallon 2-stage Cast Iron Industrial Air Compressor

8For technical questions call 1-800-665-8685

8475014

V 3.4

ELECTRICAL POWER REQUIREMENTS

WARNING! All wiring should be performed by a qualiﬁed electrician.

Refer to the air compressor’s serial label for the unit’s voltage and amperage requirements. Ensure

that all wiring is done by a licensed electrician in accordance with all electrical and safety codes,

as well as the most recent Canadian Electrical Code (CE) and Canadian Centre for Occupational

Health and Safety (CCOHS).

MAIN POWER PANEL

For best performance and reliable starting, the air compressor must be plugged or wired into

a dedicated 240V circuit, as close as possible to the main power panel. A circuit breaker is

recommended. Use a time delay fuse if the air compressor is connected to a circuit protected by a

fuse, as the compressor will momentarily draw several times its speciﬁc amperage when

ﬁrst started.

MAIN POWER DISCONNECT SWITCH

Low voltage or an overloaded circuit can make it dicult to start the motor or can cause the

circuit breaker to trip, especially in cold conditions. Low voltage can have several sources:

• Low supply voltage from the local power company.

• Other equipment running on the same line. The compressor may fail to start if any other

electrical devices are drawing from the compressor’s circuit.

• Inadequate wiring to the power source. The input voltage will drop by 20 to 40 volts at

startup if the wiring is not adequate. Inadequate wiring depends on the distance between

the compressor and the 240V power source. As distance increases without a change in wire

gauge (thickness), the power will drop and not enough Volts/Amps will reach the motor.

The wire gauge must increase in size (gauge 8 is larger than gauge 10) to accommodate the

voltage drop. Refer to the Canadian Electrical Code (CE) to determine proper wire size for

your circuit.

GROUNDING INSTRUCTIONS

This product must be connected to a permanent, metallic wiring system or a grounding terminal/

lead on the equipment.

OPERATION

BREAK-IN THE PUMP

NOTICE! The pump is shipped with break–in oil, which should be changed after the ﬁrst 8 hours

of operation. To reduce maintenance and repair problems, use only a premium compressor oil.

1. Check the level of oil in the pump with the sight glass. The pump oil level must be between A

and B (Fig. 4). Do not overﬁll or underﬁll.

2. Make sure the power is connected at the power panel.

3. Turn the pressure switch to the OFF position (A).

4. Open the drain valve (C) by turning it clockwise.

5. Turn ON the main power disconnect switch. Turn the pressure switch to the AUTO position

(B). The motor should start. Allow the compressor to run for 30 minutes, to break in the

internal parts. (Fig. 5)

NOTICE! Shut the compressor down immediately if the unit does not operate properly after 30

minutes and contact Princess Auto Ltd. for a solution.

80 Gallon 2-stage Cast Iron Industrial Air Compressor

Visit www.princessauto.com for more information

8475014 V 3.4

6. After about 30 minutes, shut o the main power disconnect.

7. Turn the pressure switch to o (A).

8. Close the drain valve (D). Turn it clockwise.

9. Turn ON the main power disconnect switch. Turn the pressure switch to the AUTO position.

The compressor will start and ﬁll the tank to the cut-out pressure and stop.

Fig.4 Fig.5 Fig.6

PRE-START CHECKLIST

1. Inspect/clean/change intake elements on a regular basis. The ingestion of dirt into the pump

is the primary cause of premature wear. Check intake ﬁlters daily.

2. Check oil level daily and change at regular intervals.

3. Check the tension of bolts and hardware on a regular basis. Operation of any equipment with

loose bolts and/or ﬁttings will lead to excessive vibration and the premature failure of the

compressor system control components.

4. Drain moisture from the air tank daily. Water is a natural byproduct of compressed air. Drain

the air tank after each use to avoid internal tank corrosion. Keep drain valves open when not

in use.

DAILY START UP

WARNING! High temperatures are generated by the electric motor and the pump. To prevent

burns or other injuries, DO NOT touch the compressor while it is running. Allow it to cool before

handling or servicing. Keep children away from the compressor at all times.

1. Check the sight glass to ensure the level of oil in the pump is at the required level.

2. Turn the main power disconnect switch to the OFF position.

3. Close the tank drain valve.

4. Turn ON the main power disconnect switch. Turn the pressure switch to the ON position. The

pump will start ﬁlling the tank with air. When the air pressure in the tank reaches the level

preset at the factory, the pressure switch will turn o the electric motor. As air is used and

the pressure level in the tank drops, the pressure switch will start the motor and the pump

will begin reﬁlling the tank.

80 Gallon 2-stage Cast Iron Industrial Air Compressor

10 For technical questions call 1-800-665-8685

8475014

V 3.4

SHUTDOWN

1. Turn the pressure switch to the OFF position.

2. Turn the power disconnect switch to the OFF position.

3. Reduce pressure in the tank by slowly opening the drain valve at the bottom of the tank. The

escaping air will also blow condensation out. Leave the drain valve open until the next use.

MAINTENANCE

WARNING! Only qualiﬁed service personnel should repair the device. An improperly repaired

device may present a hazard to the user and/or others.

CAUTION! Always unplug or shut down your compressor and drain the air tank completely before

attempting any type of maintenance. Wait for compressor to cool before servicing.

1. Maintain the device with care. A device in good condition is ecient, easier to control and

will have fewer problems.

2. Follow the maintenance schedule for your compressor.

3. Drain tank of moisture after each day’s use. Leave the drain valve open until the next time it

is used. This will allow moisture to completely drain out and help prevent corrosion on the

inside of tank (Fig. 6).

4. Inspect the device ﬁttings, alignment and hoses periodically. Have damaged or worn

components repaired or replaced by an authorized technician.

4.1 Pull the relief valve daily to ensure that it is operating properly and to clear the valve

of any possible obstructions.

4.2 Check that all connections are tight and don’t leak.

5. Maintain the device’s label and name plate. These carry important information. If unreadable

or missing, contact Princess Auto Ltd. for replacements.

MAINTENANCE SCHEDULE

TASK INTERVAL

Check Pump Oil Level Daily or After Each Use

Operate the Pressure Relief Valves Daily or After Each Use

Drain Tank Daily or After Each Use

Inspect and Clean Air Filter Daily or After Each Use

Change Pump Oil Every 200 operating hours or 1 year

Check Belt Tension Every 50 operating hours or monthly

Check and Tighten All Bolts After ﬁrst 8 hours and every 500 operating hours

Check Operation of System Controls Every 3 months

Check Air tank for Dents/Leaks Every 3 months

80 Gallon 2-stage Cast Iron Industrial Air Compressor

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8475014 V 3.4

LUBRICATION

Inspect and lubricate the device when required.

Only use full synthetic, non-detergent air compressor oil to lubricate the pump.

Other lubricants may not be suitable and could damage the device or cause a malfunction

during use.

CHECKING THE OIL

Prior to daily operation, check the oil level in your compressor pump. Check the sight glass to

ensure the level is between A and B. The optimal level is 2/3 full on the sight gauge. Do not

operate the pump with an inadequate or excessive amount of oil.

NOTICE! Use full synthetic, non-detergent air compressor oil.

CHANGING THE OIL

1. Remove the oil plug (C) and drain the

oil until it slows to a drip, then close

(Fig.7).

2. Add oil to the pump by ﬁrst removing

the breather plug (D).

3. Add compressor oil (approx. 53.26

oz/1.58.litres) until the level viewed

through the sight glass is between FULL

(A) and ADD (B).

4. Replace the breather plug.

Fig.7

80 Gallon 2-stage Cast Iron Industrial Air Compressor

12 For technical questions call 1-800-665-8685

8475014

V 3.4

PULLEY ALIGNMENT

NOTICE! Once the motor pulley is moved from its factory set location, the grooves of the ﬂywheel

and pulley must be aligned to within 1/16 in. to prevent excessive belt wear.

To check pulley alignment, remove the belt guard and place a straightedge (A) against the pump

ﬂywheel (B) (Fig. 10). Measure and record the distance from the straightedge to the edge of the

drive belt at point C. Then measure the distance from the straightedge to the edge of the drive

belt again at points D and E. Both distances should be the same as at point C. If either D or E are

dierent from C, there is a misalignment which must be corrected before the compressor is run.

To correct a pulley misalignment, use the

following procedure.

1. Remove the belt guard with a star

head screwdriver.

2. Loosen the motor mounting bolts.

3. Remove the 2 screws and lock

washers from the hub using a 7/16

in. wrench.

4. Insert the screws into the threaded

holes on the hub and tighten to

pull hub away from sheave,

remove screws.

DRIVE BELT TENSION ADJUSTMENT

Drive belt tensioning and pulley alignment are

done at the same time. They are discussed

separately for clarity.

Proper belt tension and pulley alignment

must be maintained for maximum drive

eciency and belt life. The correct tension

exists if a deﬂection (A) of 1/2 in. (13 mm)

occurs by placing 10 lb (4.6kg) of force (B)

midway between the motor pulley and the

pump ﬂywheel (Fig. 8). Thisdeﬂection can

be adjusted by the following procedure. The

pulley should be carefully aligned with the

ﬂywheel and all set screws should be

kept tight.

1. Remove the belt guard by removing the

screws using a star head screwdriver.

2. Loosen the motor mounting bolts.

3. Shift the motor to the point where the correct

deﬂection exists (A and B).

4. Retighten the motor mounting bolts to 10.8 to

15 ft-lb (14.7 to 20.3 N-m).

5. Check to ensure that the tension

remained correct.

6. Reinstall the belt guard. All moving parts must

be guarded.

Fig.10

Fig.8

Fig.9

80 Gallon 2-stage Cast Iron Industrial Air Compressor

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8475014 V 3.4

5. Align the motor pulley with the pump ﬂywheel (C-D-E must be equal).

6. Replace hub by aligning non-threaded holes in hub to holes in sheave. Insert screws and lock

washers and tighten.

7. Adjust the proper belt tension.

8. Retighten the motor mounting bolts to 10.8 to 15 ft-lb (14.7 to 20.3 N-m).

9. Reinstall the belt guard. All moving parts must be guarded

DRIVE BELT REPLACEMENT

1. Remove the front of the belt guard by removing the screws using a star head screwdriver.

2. Loosen the motor mounting bolts.

3. Shift the motor towards the pump to the point where the belts can be easily removed

and installed.

4. Remove and replace belts. The belts must be centered over the grooves on the ﬂywheel and

motor pulley.

5. Shift the motor back to the point where the correct deﬂection exists (see Drive Belt

Tension Adjustment).

6. Retighten the motor mounting bolts to 10.8 to 15 ft-lb (14.7 to 20.3 N-m).

7. Check to ensure that the tension remained correct.

8. Reinstall the belt guard. All moving parts must be guarded.

TO REPLACE OR CLEAN A CHECK VALVE

1. Shut OFF the main power disconnect. Relieve all the air pressure from the tank (refer to

Shutdown in Operations). Make sure the compressor

has cooled down before servicing.

2. Using the appropriately sized wrench, loosen the

compression nuts (A) on the check valve (B) and

pump head (C). Remove the transfer tube (D).

3. Using the appropriately sized wrench, loosen

the compression nut (F) from the connector (G),

located on the side of the check valve. Remove the

bleedertube (E).

4. Making note of the orientation for reassembly,

unscrew the check valve from the tank

(counterclockwise) using the appropriately

sizedwrench.

5. Using a pencil or screwdriver, carefully push the valve

disc up and down (H). If the valve disc does not move

freely up and down, the check valve needs to be

cleaned or replaced.

6. Clean the check valve with warm soapy water and

make sure to dry thoroughly before reinstalling.If the

disc valve still does not move freely up and down, it will need

to be replaced.

7. Apply thread sealant to the check valve threads and reinstall into the tank by turning

clockwise. Make sure it is the same orientation as when it was removed.

8. Replace the bleeder tube and tighten compression nut.

9. Replace the transfer tube and tighten compression nuts.

10. Perform the Break-in The Pump procedure in Operations to make sure there are no leaks and

the check valve isworking properly.

Fig.11

80 Gallon 2-stage Cast Iron Industrial Air Compressor

14 For technical questions call 1-800-665-8685

8475014

V 3.4

CLEANING THE AIR FILTER

A dirty air ﬁlter will reduce the compressor’s performance and

life. To avoid any internal contamination of the pump, the ﬁlter

should be cleaned frequently and replaced on a regular basis.

Remove the wing nut (A) and metal cover (B) to access the

ﬁlter element (C).

Felt ﬁlters should be cleaned in warm, soapy water, rinsed and

allowed to air dry before reinstallation. Paper ﬁlters should

be replaced when dirty. Do not allow the ﬁlter to become

ﬁlled with dirt or paint. Replace the ﬁlter if it becomes ﬁlled

withpaint.

TESTING FOR LEAKS

Check that all connections are tight. A small leak in any of

the hoses, transfer tubes or pipe connections will substantially reduce the performance of your

air compressor. Locate a leak by spraying a small amount of soapy water around the area of the

suspected leak. Repair or replace the faulty component if bubbles appear. Do not over tighten

any connections.

STORAGE

Before storing the compressor for a prolonged period, use an air blowgun to clean all dust and

debris from the compressor. Turn the power disconnect switch to the OFF position. Open the drain

valve to release all pressure from the tank. This will also drain all moisture from the tank. Clean

the ﬁlter element and ﬁlter housing; replace the element if necessary. Drain the oil from the pump

crankcase and replace it with new oil. Cover the entire unit to protect it from moisture

and dust.

DISPOSAL

Recycle a device damaged beyond repair at the appropriate facility.

Contact your local municipality for a list of disposal facilities or by-laws for electronic devices,

batteries, oil or other toxic liquids.

IMPORTANT! DO NOT pollute the environment by allowing uncontrolled discharge of waste oil.

TROUBLESHOOTING

Contact Princess Auto Ltd. for a solution if the device does not function properly or parts are

missing. If unable to do so, have a qualiﬁed technician service the device.

Problem(s) Possible Cause(s) Suggested Solution(s)

Pump is slow to build

tank pressure.

1. Tank drain valve is open.

2. Loose/slipping belt.

3. Leaks in system.

4. Blown gasket.

5. Broken reed valve.

6. Obstructed intake ﬁlter.

7. Leaking regulator.

8. Defective pressure

relief valve.

1. Close drain valve.

2. Adjust belt tension.

3. Correct air leaks.

4. Replace head gaskets.

5. Replace reed valves.

6. Clean or replace

intake element.

7. Replace regulator.

8. Replace pressure relief valve.

Fig.12

80 Gallon 2-stage Cast Iron Industrial Air Compressor

Visit www.princessauto.com for more information

8475014 V 3.4

Problem(s) Possible Cause(s) Suggested Solution(s)

Excessive oil

consumption.

1. Too much oil

in crankcase.

2. Improper weight of oil.

3. Obstructed

crankcase vent.

4. Dirty/plugged

intake ﬁlter.

5. Worn piston rings.

6. Scored cylinder.

1. Drain to proper level.

2. Replace with proper oil.

3. Replace dipstick or oil ﬁll plug/

crankcase vent.

4. Clean/replace intake ﬁlter.

5. Contact Princess Auto Ltd.

for solution.

6. Contact Princess Auto Ltd.

for solution.

Low discharge

pressure.

Compressor does

not stop.

1. Tank drain valve is open.

2. Air leaks.

3. Restricted air intake.

4. Prolonged excessive

use of air.

5. Compressor not

large enough.

6. Tank leaks.

7. Blown seals or gaskets.

8. Leaking/worn piston

rings or cylinder.

1. Close drain valve.

2. Tighten or replace leaking ﬁttings or

connections (do not over tighten).

Check air hose. Replace parts

if necessary.

3. Clean or replace air ﬁlterelement(s).

4. Decrease amount of air used.

5. Check air requirement of accessory.

If it is higher than CFM and pressure

supplied by compressor, you need a

larger compressor. Most accessories

are rated at 25% of actual CFM while

running continuously.

6. Immediately replace tank. DO NOT

attempt to repair.

7. Replace seals or gasket.

8. Replace piston ring or cylinder.

Air leaks from

regulator.

Regulator does not

regulate pressure.

Dirty or damaged

regulator internal parts.

Replace regulator or internal parts.

Regulated pressure

gauge reading drops

when air accessory is

being used.

1. This is normal.

2. Compressor not

large enough.

1. If pressure drops too low, adjust air

device regulator while accessory

is used.

2. Check air requirement of accessory.

If it is higher than CFM and pressure

supplied by compressor, you need a

larger compressor. Most accessories

are rated at 25% of actual CFM while

running continuously.

Pressure relief

valveopens.

1. Tank pressure

exceeded normal

operating pressure.

2. Pressure switch stuck.

1. Replace pressure switch.

2. Replace pressure switch.

80 Gallon 2-stage Cast Iron Industrial Air Compressor

16 For technical questions call 1-800-665-8685

8475014

V 3.4

Problem(s) Possible Cause(s) Suggested Solution(s)

Motor will not run. 1. Tank pressure exceeds

preset pressure

switch limit.

2. Check valve stuck open.

3. Wrong wire gauge in

power line.

4. Loose electrical

connections.

5. Paint spray on internal

motor parts.

6. Possible

defective motor.

1. Motor will start automatically when

tank pressure drops below cut-in

pressure of pressure tank.

2. Remove and clean or replace.

3. Check for proper gauge for

distance between power source and

compressor.

4. Contact Princess Auto Ltd.

for a solution.

5. Have checked at service center. Do

not operate compressor in the paint

spray area.

6. Contact Princess Auto Ltd.

for a solution.

Excessive current

draw trips circuit

breaker.

1. Low voltage/

motor overload.

2. Drive belt too tight.

3. Restricted air passages.

1. Check that power supply is adequate

and that compressor is on a

dedicated circuit.

2. Readjust belt tension.

3. Inspect and replace transfer tubes or

check valve, as required.

Compressor stalls. 1. Low voltage motor.

2. Bad check valve.

3. Seized pump.

1. Furnish adequate power.

2. Replace the check valve.

3. Contact Princess Auto Ltd.

for a solution.

Compressor pump

knocking.

1. Loose engine pulley or

compressor ﬂywheel.

2. Low oil level in

pump crankcase.

3. Excess carbon on

valves or top of piston.

1. Retighten pulley and ﬂywheel.

Check alignment.

2. Keep oil at proper level at

all times.

3. Contact Princess Auto Ltd.

for a solution.

Oil in discharge air. 1. Worn piston rings

or cylinder.

2. Restricted air intake.

3. Oil level too high.

1. Contact Princess Auto Ltd. for

a solution.

2. Clean or replace the

air ﬁlter element(s).

3. Reduce to proper level.

Overheating. 1. Poor ventilation.

2. Dirty cooling surfaces.

3. Restricted air passages.

1. Relocate compressor to an area with

cool, dry, well circulated air, at least 12

in. from nearest wall.

2. Clean all cooling surfaces thoroughly.

3. Replace transfer tubes

and/or unloaded.

Excessive belt wear. 1. Pulley out of alignment.

2. Improper belt tension.

3. Pulley wobbles.

1. Realign pulley with

compressor ﬂywheel.

2. Readjust.

3. Replace the pulley and check for a

damaged crankshaft

or ﬂywheel.

80 Gallon 2-stage Cast Iron Industrial Air Compressor

Visit www.princessauto.com for more information

8475014 V 3.4

PARTS BREAKDOWN

Problem(s) Possible Cause(s) Suggested Solution(s)

Compressor

won’t start in cold

temperatures.

1. Too much back pressure

in tank.

2. 40W oil in crankcase.

3. Compressor too cold.

1. Open drain valve when starting motor.

2. Use full synthetic, non-detergent air

compressor oil suitable for

low temperatures.

3. Move compressor to a

warmer location.

Fig. 13

80 Gallon 2-stage Cast Iron Industrial Air Compressor

18 For technical questions call 1-800-665-8685

8475014

V 3.4

PARTS LIST – COMPRESSOR

PART # DESCRIPTION QT Y. PART IDENTIFIER

1 Tank Assy 1 021-0307

1a Drain Valve, 1/4 in. NPT 1 072-0019

1b Bushing, 2 NPSM x 1/4 in. NPT 1 512-0041

1c Bushing, 2 NPSM x 3/4 in. NPT 1 512-0043

1d 2 in. O-ring 2 513-0001

2 Nipple, 1/4 x 2-1/2 in. 1 065-0005

3 Washer, #10 4 060-0146

4 Pump Assy 1 See pages 4-6

5 Screw, 3/8 -16 x 2 in. lg 4 059-0119

6 Washer, 3/8 in. 8 060-0023

7 Nut, 3/8 in. -16 8 058-0009

8 Tube, Bleeder 1 145-0495

9 Elbow 1 064-0003

10 Check Valve 1 031-0104

11 Tube, Transfer 1 145-0670

12 Screw, 3/8 -16 x 1 in. lg 4 059-1007

13 Motor 1 160-0335

14 Key, 1/4 in. Square x 1-1/4 in. lg 1 146-0021

15 Bracket, Belt Guard 2 114-0349

16 Screw M5 x 20 mm 5 061-0255

17 Belt Guard (Inner) 1 125-0219

18 Belt Guard (Outer) 1 125-0204

19 Pulley, 2AK74 1 006-0163

20 V-belt, A68 2 007-0071

21 U-nut, Spring 5 103-0205

22 Screw, 3/8 -16 x 3/4 in. lg 6 059-0164

23 Screw, #10 x 3/4 in. lg 2 061-0212

24 Lock Nut, 10-32 2 058-0158

25 Switch Assy 1 See page 6

26 Magnetic Starter 1 001-0163

27 Bracket 1 114-0849

28 Screw 2 059-0012

29 Strain Relief, 3/8 in. 90° 2 071-0003

30 Cord, Interconnect 1 026-0191

31 Cord, Interconnect 1 026-0223

32 Strain Relief, 3/8 in. Straight 1 071-0002

33 Warning Label 1 098-3870

34 Warning Label 1 098-3031

80 Gallon 2-stage Cast Iron Industrial Air Compressor

Visit www.princessauto.com for more information

8475014 V 3.4

PART # DESCRIPTION QT Y. PART IDENTIFIER

35 Connector, 3/4 NPT x 3/4 Tube 1 068-0003

36 Compression Nut & Sleeve 2 058-0012

37 Bushing, 1 x 3/4 in. 1 063-0011

38 Shield 1 125-0224

39 Warning Label 1 098-2896

40 Hub 1 004-0002

41 Screw, 1/4-20 x 3/4 in. 2 N/A (order # 40)

42 Washer 1 to 3/4 in. 1 060-0232

43 Locknut, Conduit 3/4 in. 1 058-0194

44 Washer, 5/16 in. 2 060-0202

45 Nut, 5/16-18 2 058-0125

46 Screw, 5/16-18 2 059-0389

Vibration Pads (Available Separately) 094-0137

Fig. 14

80 Gallon 2-stage Cast Iron Industrial Air Compressor

20 For technical questions call 1-800-665-8685

8475014

V 3.4

PARTS LIST - PUMP ASSEMBLY

PART # DESCRIPTION QT Y. PART IDENTIFIER

1 Filter, Cannister Assy (includes item 2) 1 019-0300

2 Element, Filter Replacement 1 019-0299

3 Bolt, Head, M10 x 100 mm lg 9 059-0421

4 Washer, Lock M10 22 060-0209

5 Head, Cylinder 1 042-0137

6 Gasket, Cylinder Head 1 046-0345

7 Bolt, M5 x 12 mm lg 4 N/A (Order Part #54)

8 Seat, Valve (Upper) 1 N/A (Order Part #54)

9 Gasket, Valve Plate 1 046-0346

10 Reed Valve, LP 4 N/A (Order Part #54)

11 Reed Valve, HP 2 N/A (Order Part #54)

12 Seat, Valve (Lower) 1 N/A (Order Part #54)

13 Gasket, Valve Cylinder 1 046-0347

14 Connector 1 064-0127

15 Compression Nut 1 058-0190

16 Piston, Low Pressure 1 048-0137

17 Pin, Wrist, Low Pressure 1 052-0044

18 Piston, High Pressure 1 048-0138

19 Pin, Wrist, High Pressure 1 052-0045

20 Retaining Ring 4 054-0273

21 Cylinder 1 050-0073

22 Gasket, Cylinder/Crankcase 1 046-0348

23 Nut, M12 6 058-0189

24 Bolt, M12 x 30 mm lg 6 059-0423

25 Rod, Connecting Assy 2 047-0103

26 Connecting Rod 2 N/A (Order Part #25)

27 Insert, Bearing 2 pair 051-0116

28 Needle Bearing 2 051-0115

29 Oil Dipper 2 N/A (Order Part #25)

30 Washer, Spring 2 N/A (Order Part #25)

31 Bolt, M5 x 10 mm lg 2 N/A (Order Part #25)

32 Breather Cap 1 059-0097

33 Connector 1 068-0104

34 Breather Tube 1 065-0113

35 Bolt, M10 x 30 mm lg 6 059-0407

36 Bearing Carrier, Rear 1 045-0056

37 Gasket, Bearing Carrier 1 046-0340

38 Filter, Oil Screen 1 019-0296

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PROPOINT 8475014 Owner's manual

Brand: PROPOINT

Model: 8475014

Category: Air compressors

Type: Owner's manual

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