Delta OIL-FREE AIR COMPRESSOR CP503 Instruction Manual Download Page 12

12- ENG

A08200

OPERATION

Know Your Air Compressor

READ THIS OWNER’S MANUAL AND SAFETY RULES BEFORE OPERATING 

YOUR UNIT. Compare the illustrations with your unit to familiarize yourself with 

the location of various controls and adjustments. Save this manual for future 

reference.

Description of Operation

Become familiar with these controls before operating the unit.

On/Auto/Off Switch

: Turn this switch "ON/AUTO" to provide automatic power 

to the pressure switch and "OFF" to 

remove power at the end of each use.

Pressure Switch:

 The pressure switch 

automatically starts the motor when the 

air tank pressure drops below the factory 

set "cut-in" pressure. It stops the motor 

when the air tank pressure reaches the 

factory set "cut-out" pressure.

Safety Valve:

 If the pressure switch 

does not shut off the air 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).

Outlet Pressure Gauge:

  The outlet pressure gauge indicates the air pressure 

available at the outlet side of the regulator. This pressure is controlled by the 

regulator and is always less than or equal to the tank pressure. 

Tank Pressure Gauge:

  The tank pressure gauge indicates the reserve air 

pressure in the tank. 

Regulator:

 Controls the air pressure shown on the outlet pressure gauge. Pull 

the knob out and turn clockwise to increase pressure and counterclockwise to 

decrease pressure. When the desired pressure is reached push knob in to lock 

in place.

Drain Valve:

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

to drain condensation at the end of each use.

Cooling System (not shown)

:  This compressor contains an 

advanced design cooling system. At the heart of this cooling 

system is an engineered fan. It is perfectly normal for this fan 

to blow air through the vent holes in large amounts. You know 

that the cooling system is working when air is being expelled.

Air Compressor Pump (not shown):

  Compresses air into the air tank.  

Working air is not available until the compressor has raised the air tank 

pressure above that required at the air outlet.

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.

Drain 

Valve

Pressure 

Switch

Tank

Pressure Gauge

Outlet 

Pressure Gauge

Safety 

Valve

On/Auto/Off 

Switch

Regulator

Check Valve

Summary of Contents for OIL-FREE AIR COMPRESSOR CP503

Page 1: ...t 2004 Delta Machinery To learn more about DELTA MACHINERY visit our website at www deltamachinery com For Parts Service Warranty or other Assistance please call 1 866 422 4286 Oil Free Air Compressor...

Page 2: ...the symbols below Please read the manual and pay attention to these symbols IMPORTANT SAFETY INSTRUCTIONS Some dust created by power sanding sawing grinding drilling and other construction activities...

Page 3: ...roperty damage To reduce the risk of fire do not allow the compressor to operate unattended Always operate the compressor in a well ventilated area free of combustible materials gasoline or solvent va...

Page 4: ...ndensed water from tank causing rust and thinning of the steel tank Modifications or attempted repairs to the tank Unauthorized modifications to the unloader valve safety valve or any other components...

Page 5: ...ect voltage and adequate fuse protection The compressed air directly from your compressor is not safe for breathing The air stream may contain carbon monoxide toxic vapors or solid particles from the...

Page 6: ...thing WARNING Risk of Falling 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 Always operate...

Page 7: ...parts WARNING Risk of Unsafe Operation Unsafe operation of your air compressor could lead to serious injury or death to you or others HAZARD WARNING Risk of Serious Injury or Property Damage When Tran...

Page 8: ...nderwriters Laboratories Standards for Safety Cut In Pressure While the motor is off air tank pressure drops as you continue to use your accessory When the tank pressure drops to a certain low level t...

Page 9: ...t up and down stairs or steps The unit must be lifted or pushed up a ramp 1 Submerge handle grip into warm soapy water to make installation easier Remove handle grip from soapy water and slide onto ha...

Page 10: ...4 If these grounding instructions are not completely understood or if in doubt as to whether the compressor is properly grounded have the installation checked by a qualified electrician IMPROPER GROUN...

Page 11: ...ther electrical needs lights appliances etc 3 Extension cords comply with specifications 4 Circuit is equipped with a 15 amp circuit breaker or 15 amp time delay fuse NOTE If compressor is connected t...

Page 12: ...is always less than or equal to the tank pressure Tank Pressure Gauge The tank pressure gauge indicates the reserve air pressure in the tank Regulator Controls the air pressure shown on the outlet pr...

Page 13: ...ON AUTO position The compressor will start 5 Run the compressor for 15 minutes Make sure the drain valve is open and there is minimal air pressure build up in tank 6 After 15 minutes close the drain...

Page 14: ...ety valve ring 5 Drain water from air tank by opening drain valve counter clockwise on bottom of tank Water will condense in the air tank If not drained water will corrode and weaken the air tank caus...

Page 15: ...rn clockwise 7 Replace the outlet tube and tighten the nut 8 Perform the Break in Procedure See Break in Procedure in the Operation section SERVICE AND ADJUSTMENTS Unit cycles automatically when power...

Page 16: ...cheduled maintenance as necessary 2 Set the On Auto Off lever to OFF 3 Turn the regulator counterclockwise and set the outlet pressure to zero 4 Remove the air tool or accessory 5 Pull ring on safety...

Page 17: ...re air can be heard escaping Check fittings with soapy water solution Do Not Overtighten Air leaks at fittings Air leaks at pressure switch release valve if equipped Defective pressure switch release...

Page 18: ...accessory is being used Compressor is not supplying enough air to operate accessories Prolonged excessive use of air Compressor is not large enough for air requirement Hole in hose Check valve restric...

Page 19: ...heck for proper fuse You should use a time delay fuse Check for low voltage problem Check the extension cord Disconnect the other electrical appliances from circuit or operate the compressor on its ow...

Page 20: ...ser Air compressors with 60 and 80 gallon tanks will be inspected at the site of installation Contact the nearest Authorized Warranty Service Center that provides on site service calls for service cal...

Reviews: