KING CANADA 8438 Oil Free Air Compressor Kit Instruction Manual

June 15, 2024
KING CANADA

OIL-FREE AIR COMPRESSOR KIT MODEL: 8438
INSTRUCTION MANUAL

WARRANTY INFORMATION

2-YEAR
LIMITED WARRANTY
FOR THIS OIL-FREE AIR COMPRESSOR| KING CANADA TOOLS
OFFERS A 2-YEAR LIMITED WARANTY
FOR NON-COMMERCIAL USE.
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PROOF OF PURCHASE
Please keep your dated proof of purchase for warranty and servicing purposes.
REPLACEMENT PARTS
Replacement parts for this product are available at our authorized King Canada service centers across Canada. Please use the 10 digit part numbers listed in this manual for all part orders where applicable.
LIMITED TOOL WARRANTY
King Canada makes every effort to ensure that this product meets high quality and durability standards. King Canada warrants to the original retail consumer a 2-year limited warranty as of the date the product was purchased at retail and that each product is free from defects in materials. Warranty does not apply to defects due directly or indirectly to misuse, abuse, normal wear and tear, negligence or accidents, repairs done by an unauthorized service center, alterations and lack of maintenance. King Canada shall in no event be liable for death, injuries to persons or property or for incidental, special or consequential damages arising from the use of our products.
To take advantage of this limited warranty, return the product at your expense together with your dated proof of purshase to an authorized King Canada service center. Contact your retailer or visit our web site at www.kingcanada.com for an updated listing of our authorized service centers. In cooperation with our authorized serviced center, King Canada will either repair or replace the product if any part or parts covered under this warranty which examination proves to be defective in workmanship or material  during the warranty period.
NOTE TO USER
This instruction manual is meant to serve as a guide only. Specifications and references are subject to change without prior notice.
KING CANADA INC. DORVAL, QUÉBEC, CANADA H9P 2Y4
www.kingcanada.com
WARNING!
UNPLUG POWER CORD WHEN NOT IN USE.

To avoid hazardous situations and risk of fire, make sure to turn the switch to the “Off” position and/or unplug power cord before leaving compressor unattended.

  • Unattended operation of this compressor could result in personal injury or property damage. Always remain in attendance with the compressor when it is operating.
  • If electrical sparks from the compressor come in contact with flammable vapors, they may ignite, causing fire or explosion. Store flammable materials in a secure location away from the compressor.
  • Restricting any of the compressor ventilation openings will cause serious overheating and could cause fire.
  • Never place objects against or on top of the compressor. Operate compressor in an open area at least 12” away from any wall or obstruction that would restrict the flow or fresh air to the ventilation openings.
  • Operate compressor in a clean, dry and well ventilated area. Do not operate compressor indoors in a confined area.

IMPORTANT SAFETY INSTRUCTIONS

RISK OF EXPLOSION OR FIRE WHAT CAN HAPPEN
It is normal for electrical contacts within the motor and pressure switch to spark.
If electrical sparks from the compressor come in contact with flammable vapors, they may ignite, causing fire or explosion.
Restricting any of the compressor ventilation openings will cause serious overheating and could cause fire.
Unattended operation of this compressor could result in personal injury or property damage.
RISK OF BURSTING WHAT CAN HAPPEN

  1. Failure to properly drain condensed water from the tank, causing rust and thinning of the steel tank.
  2. Modifications or attempted repairs to the tank.
  3. Unauthorized modifications to the unloader valve, safety valve or any other components which control tank pressure.
  4. Excessive vibration can weaken the air tank and cause rupture or explosion.

Attachments & Accessories; Exceeding the operating pressure of air tools can cause them to explode.

RISK OF BURNS WHAT CAN HAPPEN
Touching exposed metal such as the compressor head or outlet tubes, can result in serious burns.

HOW TO PREVENT IT
Always operate the compressor in a well ventilated area free of combustible materials, gasoline or solvent vapors. If spraying flammable materials, locate the compressor at least 20 feet away from the spray area. An additional length of hose may be required.
Store flammable materials in a secure location away from the compressor.
Never place objects against or on top of the compressor.
Operate compressor in an open area at least 12 inches away from any wall or obstruction that would restrict the flow or fresh air to the ventilation openings.
Operate compressor in a clean, dry and well ventilated area.
Do not operate compressor indoors in a confined area.
Always remain in attendance with the compressor when it is operating.
HOW TO PREVENT IT
Drain tank daily or after every use. If the tank developes a leak, replace tank or get a new air compressor. Never drill into, weld or make any modifications to the tank or its attachments.
The tank is designed to withstand specific operating pressures.
Never make adjustments or parts substitutions to alter the factory set operating pressures.
For essential control of air pressure, you must install a pressure regulator and pressure gauge to the air outlet.
HOW TO PREVENT IT
Never touch any exposed metal parts on compressor during or immediately after operation. The compressor will remain hot several minutes after use.
Do not reach around protective shrouds or attempt maintenance until the compressor has cooled down completely.

SPECIFICATIONS & ELECTRICAL INFORMATION

SPECIFICATIONS

Model 8438
Voltage 120V
Amperage 5A
RPM (no load speed) 4,700
Phase 1
Hertz 60Hz
Maximum operating pressure 100 PSI
CFM @ 40 PSI 1
CFM @ 90 PSI 0.6
Tank size 3 US Gallons

WARNING
ALL ELECTRICAL CONNECTIONS MUST BE DONE BY A QUALIFIED ELECTRICIAN. FAILURE TO COMPLY MAY RESULT IN SERIOUS INJURY! ALL ADJUSTMENTS OR REPAIRS MUST BE DONE WITH THE COMPRESSOR DISCONNECTED FROM THE POWER SOURCE. FAILURE TO COMPLY MAY RESULT IN SERIOUS INJURY!
POWER SUPPLY
WARNING:
YOUR COMPRESSOR MUST BE CONNECTED TO A 120V OUTLET, USING A 15-AMP TIME DELAY FUSE OR CIRCUIT BREAKER. FAILURE TO CONNECT IN THIS WAY CAN RESULT IN INJURY FROM SHOCK OR FIRE.
GROUNDING
Your compressor must be properly grounded. Not all outlets are properly grounded. If you are not sure if your outlet is properly grounded, have it checked by a qualified electrician.
WARNING: IF NOT PROPERLY GROUNDED, THIS COMPRESSOR CAN CAUSE ELECTRICAL SHOCK, PARTICULARLY WHEN USED IN DAMP LOCATIONS. TO AVOID SHOCK OR FIRE, IF THE POWER CORD IS WORN OR DAMAGED IN ANY WAY, HAVE IT REPLACED IMMEDIATELY.
If this compressor should malfunction or breakdown, grounding provides a path of least resistance for electric current, to reduce the risk of electric shock. This compressor is equipped with a cord having an equipmentgrounding conductor and grounding plug. The plug must be plugged into an appropriate outlet that is properly installed and grounded in accordance with all local codes and ordinances.
WARNING: TO MAINTAIN PROPER GROUNDING, DO  NOT REMOVE OR ALTER THE GROUNDING PRONG IN ANY MANNER.
120V OPERATION
As received from the factory, your compressor is ready to run for 120V operation.
This machine is intended for use on a circuit that has an outlet and a plug which looks like the one illustrated in Fig.1.
WARNING: DO NOT USE A TWO-PRONG ADAPTOR FOR THEY ARE NOT IN ACCORDANCE WITH LOCAL CODES AND ORDINANCES.
NEVER USE IN CANADA.
EXTENSION CORDS
The use of any extension cord will cause some loss of power. IT IS RECOMMENDED TO USE A LONGER AIR HOSE INSTEAD OF AN EXTENSION CORD. Use the chart below in Fig.2 to determine the recommended minimum wire size (A.W.G- American Wire Gauge) extension cord. Use only 3-wire extension cords which have 3-prong grounding type plugs and 3-hole receptacles which accept the tool’s plug.
For circuits that are further away from the electrical circuit box, the wire size must be increased proportionately in order to deliver ample voltage to the motor. Refer to Fig.2 for wire length and size.

LENGTH OF CONDUCTOR
0-25 FEET
26-50 FEET
51-100 FEET| WIRE SIZES REQUIRED
(AMERICAN WIRE GAUGE)
120V LINES
NO.16
NO.16
NO. 14
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FIGURE 2

OPERATION CONTROL

CHECK VALVE
When the air compressor is operating, the check valve is “open”, allowing compressed air to enter the air tank. When the air compressor reaches “Cut- Out” pressure, the check valve “closes”, allowing air pressure to remain inside the air tank.
ON/OFF SWITCH (A) FIG.3
Turn this switch ON to provide power to the automatic pressure switch and OFF to remove power at the end of each use.

RESET (B) FIG.3
This compressor is equipped with a thermal overload. If the motor overheats the rest will trip and turn the compressor off. Wait 5 minutes to allow for cooling and press the rest button before attempting to restart the motor.
PRESSURE SWITCH
The pressure switch automatically starts the motor when the tank pressure drops below the factory set “Cut-In” pressure. It also stops the motor when the air tank pressure reaches the factory set “Cut-Out” pressure.
REGULATOR (A) FIG.4
The air pressure coming from the air tank is controlled by the regulator. Turn the regulator knob clockwise to increase pressure and counterclockwise to decrease pressure. To avoid minor readjustment after making a change in the pressure setting, always approach the desired pressure from a lower pressure. When reducing from a higher to a lower setting, first reduce the pressure less than that desired, then bring it up to the desired pressure. Depending on the air requirements of each particular accessory, the outlet regulated air pressure may have to be adjusted while operating the accessory.

OUTLET PRESSURE GAUGE (B) FIG.4
The outlet pressure gauge indicates the air pressure available at the outlet side of the regulator. The pressure is controlled by the regulator and is always less than or equal to the tank pressure.
TANK PRESSURE GAUGE (C) FIG. 4
The tank pressure gauge indicates the reserve air pressure in the tank.
“ONE TOUCH” 1/4” QUICK RELEASE COUPLER (D) FIG. 4
Connect the coil hose with a 1/4” male fitting and connect it this female quick release coupler.
DRAIN VALVE (A) FIG. 5
The drain valve is located at the base of the air tank and is used to drain condensation at the end of each use.

SAFETY PRESSURE RELEASE VALVE (A) FIG.6
If the pressure switch does not shut off the air compressor at its cutout pressure setting and the air pressure keeps rising, the safety valve will protect against high pressure by “popping out” above factory set pressure (slightly higher than the pressure switch cut-out setting). WARNING!: If the safety pressure release valve does not work properly, over pressurization may occur, causing air tank rupture or an explosion. Pull the ring on the safety valve daily to make sure that the safety valve operates freely. If the valve is stuck or does not operate smoothly, it must be replaced with the same type of valve.

SET-UP, OPERATION & STORING

SETTING UP YOUR AIR COMPRESSOR
Operate the air compressor in a dry, clean, cool, well ventilated area. Clean or blow off dust or dirt that collects on the air compressor. A clean air compressor runs cooler and provides longer service. The ventilation openings on your air compressor are necessary to maintain proper operating temperature. Do not place rags or other containers on or near these openings.
ADDITIONAL REGULATORS AND CONTROLS
Since the air tank pressure is usually greater than that which is needed, a regulator is employed to control the air pressure ahead of any individual driven device. Seperate air transformers which combine the function of air regulation, moisture and dirt removal  should be used where applicable.
Preparation for use

  1. Before attaching air hose or accessories, make sure the On/Off switch is set to “OFF” and the air regulator is closed (completely turned counterclockwise).
  2. Attach the 1/4” male fitting (A) Fig.7 to one end of coil hose (B), then connect the male fitting (A) into the quick connect outlet (C), then attach the any of the supplied accessories (D) to the other end of the coil hose. To prevent air leaks, it is recom- mended to install Teflon Tape (not supplied) on the threads at both ends of the coil hose. WARNING: Too much air pressure causes a hazardous risk of bursting. Check the manufacturer’s maximum pressure rating for air tools and accessories. The regulator outlet pressure must never exceed the maximum pressure rating of the tool being used.
  3. Turn the switch to the On position and allow tank pressure to build. Motor will stop when tank pressure reaches “cut-out” pressure.
  4. Open the regulator by turning it clockwise. Adjust the regulator to the correct pressure setting. The compressor is ready for use.

After Use:

  1. Set the switch to Off.

  2. Turn the regulator counterclockwise to set the outlet pressure to zero.

  3. Disconnect the air tool or accessory.

  4. Pull ring on safety valve (A) Fig. 6, allowing air to bleed from the tank until tank pressure is approximately 20 psi. Release safety valve ring.

  5. Drain water from air tank. Turn drain valve (A) Fig. 5, counterclockwise to open.
    WARNING!: WATER WILL CONDENSE IN THE AIR TANK. IF NOT DRAINED WATER WILL CORRODE AND WEAKEN THE AIR TANK CAUSING A RISK OF AIR TANK RUPTURE.
    NOTE: If drain valve is plugged, pull ring on safety valve (A) Fig. 6, and hold until all air pressure has been released. The drain valve can then be removed, cleaned, and reinstalled.

  6. After the water has been completely drained, turn drain valve to close. The air compressor can now be stored.

MAINTENANCE & TROUBLESHOOTING

MAINTENANCE
Before doing any maintenance or adjustments to your air compressor, the following safety precautions should be taken:

  • Disconnect electrical power.
  • Release air tank pressure.

Daily or before each use:

  1. Drain condensation from tank.
  2. Check for any unusual noise or vibration.
  3. Be sure all nuts and bolts are tight.

KEEP TOOL CLEAN
Periodically blow out all air passages with dry compressed air. Clean all plastic parts with a soft damp cloth. NEVER use solvents to clean plastic parts. They could possibly dissolve or otherwise damage the material.
CAUTION: Wear safety glasses while using compressed air.
FAILURE TO START
Should your compressor fail to start, check to make sure the prongs on the cord plug are making good contact in the outlet. Also, check compressor fuse or tripped circuit breakers in the line.

TROUBLE SHOOTING

TROUBLE POSSIBLE CAUSE CORRECTIVE ACTION
No start condition Fuse blown or circuit breaker tripped Loose electrical
connections Overheated motor Check for cause of blown fuse/breaker and

replace
Check wiring connections
Turn compressor off, wait until total cool-down before restarting
Low pressure| Air leak in safety valve Defective check valve| Check valve manually by pulling upwards on ring. If condition persists replace valve Replace check valve
Safety valve releasing| Defective pressure switch or improper adjustment| Check for proper adjustment and if problem persists, replace pressure switch
Tank pressure drops when compressor shuts off| Loose drain valve
Loose connections at regulator or pressure switch| Tighten drain valve
Check connections for leaks, seal with Teflon tape
Excessive moiture
coming out of air hose| Excessive water in the tank Humidity too high| Drain tank through drain valve
Move compressor to area of less humidity. Risk of electric shock!

PARTS DIAGRAM & PARTS LISTS
Refer to the Parts section of the King Canada web site for the most updated parts diagram and parts list.

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