MasterCraft 58-7922-8 Instruction Manual Download Page 8

ENGLISH 

reaches cut-out pressure. 

Safety Valve (K, Fig. 4): 

If the pressure switch does not shut off the air 

Tank Pressure Gauge (F, Fig. 4):

 The tank pressure gauge indicates the 

reserve air pressure in the tank. 

Cooling System: This compressor contains an advanced design cooling 

system. The cooling system is working when air is being expelled. 

 

Drain Valve (G, Fig. 3): 

The drain valve is located at the base of the air tank 

and is used to drain condensation at the end of each use. 

Motor Thermal Overload Protector: The electric motor has an automatic 

thermal overload protector. If the motor overheats for any reason, the thermal 

overload protector will shut off the motor. The motor must be allowed to cool 

before restarting. 

Pressure Release Valve:

 The pressure release valve located on the side of 

the pressure switch is designed to automatically release compressed air from 

the compressor head and the outlet tube when the air compressor reaches 

“cut-out” pressure or is shut off. 

The pressure release 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 continuous leaking after unit 

compressor at its cut-out pressure setting, the safety valve will protect 

against high pressure by “popping out” at its factory set pressure (slightly 

higher than the pressure switch cut-out setting).

 If the safety valve does not work properly, over-pressurization

may occur, causing 

the 

air tank 

to 

rupture or an explo

ded

T

he ring on the 

safety valve 

should be pulled daily 

to make sure that the safety valve 

operates

freely,if the valve is 

stuck or does not operate smoothly, it must be 

replaces

with the same type 

of valve. 

INSTALLATION AND BREAK-IN PROCEDURES 

LOCATION OF THE AIR COMPRESSOR 

Your compressor comes to you completely assembled and ready for use. 

Operate the air compressor in a dry, clean, cool, and well-ventilated area. 

The air compressor pump and case are designed to allow for proper cooling. 

Clean or blow off dust or dirt that collects on the air compressor. A clean 

8

Overload protection(Fig. 5)

 This compressor has a reset 

overload reset button that will restart the motor 

after it shuts off due to overloading or low voltage. 

If the motor stops during operation:

1.    Turn the ON/OFF switch to the OFF position.

2.    Wait about five minutes for the motor to cool.

3.    Push in on the reset button.

4.    Turn the switch to the ON position.

                 

TO PREVENT AN ACCIDENTAL START-UP IF THE RESET BUTTON 

IS PUSHED, THE ON/OFF SWITCH SHOULD BE IN THE OFF POSITION AND 

THE PLUG SHOULD BE REMOVED FROM THE POWER SOURCE WHILE 

COOL DOWN TAKES PLACE.  

Overload

protection

Fig. 5

Summary of Contents for 58-7922-8

Page 1: ...58 7922 8 4 Gal Air Compressor INSTRUCTION MANUAL FOR SAFE OPERATION READ AND UNDERSTAND ALL INSTRUCTION MANUAL ...

Page 2: ...result in death or serious injury CAUTION used without the safety alert symbol indicates a potentially hazardous situation which if not avoided may result in property damage Retain Original Sales Receipt as Proof of Purchase for Warranty Repair Work IMPORTANT SAFETY INSTRUCTIONS When using electric tools basic safety precautions When using electric tools basic safety precautions should always be f...

Page 3: ...ERATE UNIT INDOORS OR IN ANY CONFINED AREA ALWAYS REMAIN NEAR THE PRODUCT WHEN IT IS OPERATING AIR TANK THE FOLLOWING CONDITIONS COULD LEAD TO A WEAKENING OF THE TANK AND RESULT IN A VIOLENT TANK EXPLOSION AND COULD CAUSE PROPERTY DAMAGE OR SERIOUS INJURY WHAT CAN HAPPEN HOW TO PREVENT IT 1 FAILURE TO PROPERLY DRAIN CONDENSED WATER FROM THE TANK CAUSING RUST AND THINNING OF THE STEEL TANK 2 MODIFI...

Page 4: ...PETS AND OTHERS AWAY FROM AREA OF OPERATION NEVER INHALE AIR FROM THE COMPRESSOR EITHER DIRECTLY OR FROM A BREATHING DEVICE CONNECTED TO THE COMPRESSOR WORK IN AN AREA WITH GOOD CROSS VENTILATION READ AND FOLLOW THE SAFETY INSTRUCTIONS PROVIDED ON THE LABEL OR SAFETY DATA SHEETS FOR THE MATERIAL YOU ARE SPRAYING USE A NIOSH MSHA APPROVED RESPIRATOR DESIGNED FOR USE WITH YOUR SPECIFIC APPLICATION W...

Page 5: ... FOR SEVERAL MINUTES AFTER OPERATION DO NOT REACH AROUND PROTECTIVE SHROUDS OR ATTEMPT MAINTENANCE UNTIL UNIT HAS BEEN ALLOWED TO COOL RISK OF FALLING WHAT CAN HAPPEN A PORTABLE COMPRESSOR CAN FALL FROM A TABLE WORKBENCH OR ROOF CAUSING DAMAGE TO THE COMPRESSOR AND COULD RESULT IN SERIOUS INJURY OR DEATH TO THE OPERATOR OR BYSTANDERS HOW TO PREVENT IT ALWAYS OPERATE COMPRESSOR IN A STABLE SECURE P...

Page 6: ...from pressure higher than its capacity The high pressure at which the motor shuts off is called cut out pressure COD CERTIFICATION Products that bear one or more of the following marks UL CUL ETL CETL have been evaluated by OSHA certified independent Safety laboratories and meet the applicable Underwriters Laboratories Standards for safety SPECIFICATIONS MODEL NO 58 7922 8 SCFM 40 PSIG 7 3 SCFM 90 ...

Page 7: ...drops below the factory set cut in pressure It stops the motor when the air tank pressure reaches the factory set cut out pressure Regulator D 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 pressure setting always appr...

Page 8: ...out pressure setting the safety valve will protect against high pressure by popping out at its factory set pressure slightly higher than the pressure switch cut out setting If the safety valve does not work properly over pressurization may occur causing the air tank to rupture or an exploded The ring on the safety valve should be pulled daily to make sure that the safety valve operates freely if t...

Page 9: ...or SMALLER 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 air driven device Separate air transformers which combine the function of air regulation moisture and dirt removal should be used where applicable LUBRICATION The bearings in this unit are sealed containin...

Page 10: ...t pressure to zero until tank pressure is approximately 20 PSI Release safety valve ring 10 Drain water from air tank Turn the drain valve G Fig 3 counter clockwise to open WATER WILL CONDENSE IN THE AIR TANK IF NOT 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 the ring on the saf...

Page 11: ... NOT DRAINED WATER WILL CORRODE AND WEAKEN THE AIR TANK CAUSING A RISK OF AIR TANK RUPTURE NOTE If drain valve is plugged pull the ring on the safety valve K Fig 3 and hold until all air pressure has been released The 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 7 Protect the electrica...

Page 12: ...p Assembly 14 1 Gauge 3 Rubber Bumper 14 2 Elbow Fitting 120 4 Wheel Axle 14 3 Regulator Manifold 5 Wheel 14 4 Quick Connect Body 6 Rubber Bumper 14 5 Screw 7 Air Hose 14 6 Console Panel 8 Hose Clamp 14 7 Rubber Bumper 9 Elbow Fitting 90 14 8 Safety Valve 10 Pressure Switch 15 Check Valve 11 Copper Pipe 16 Copper Pipe 12 Power Cord 17 Handle 13 Screw 18 Assistant Handle ...

Page 13: ...r repair warranty against defects in workmanship and materials At its discretion Mastercraft Canada agrees to have any defective part s repaired or replaced free of charge within the stated warranty period when returned by the original purchaser with proof of purchase This product is not guaranteed wear or breakage due to misuse and or abuse If this product is used for commercial industrial or ren...

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