DeWalt 66-651 instruction manual Pressure reading

Page 20

PROBLEM

CAUSE

CORRECTION

Pressure reading

It is normal for "some"

If there is an excessive

on the regulated

pressure drop to occur.

amount of pressure drop

pressure gauge

 

when the accessory is used,

drops when an

 

adjust the regulator following

accessory is

 

the instructions in the

used.

 

"Description of Operation"

 

 

paragraph in the "Operation

 

 

Section.

 

 

NOTE: Adjust the regulated

 

 

pressure under flow

 

 

conditions (while accessory

 

 

is being used).

Knocking Noise.

Possible defect in safety

Operate safety valve

 

valve.

manually by pulling on ring.

 

 

If valve still leaks, it should

 

 

be replaced.

 

Defective check valve.

Remove and clean, or

 

 

replace.

 

 

 

Compressor is

Prolonged excessive use of

Decrease amount of air

not supplying

air.

usage.

enough air to

Compressor is not large

Check the accessory air

operate

accessories.

enough for air requirement.

requirement. If it is higher

 

 

than the SCFM or pressure

 

 

supplied by your air

 

 

compressor, you need a

 

 

larger compressor.

 

Hole in hose.

Check and replace if

 

 

required.

 

Check valve restricted.

Remove and clean, or

 

 

replace.

 

Air leaks.

Tighten fittings.

 

Restricted air intake filter

Clean or replace air intake

 

 

filter. Do not operate the air

 

 

compressor with the filter

 

 

removed. Refer to the "Air

 

 

Filter" paragraph in the

 

 

"Maintenance " section.

 

 

 

Regulator knob

Damaged regulator

Replace

has continuous

 

 

air leak.

 

 

 

 

 

D26195

20- ENG

Image 20
Contents Oil-Free Air Compressor Safety Guidelines Definitions Important Safety InstructionsHazard Attachments & Accessories Hazard What can Happen HOW to Prevent IT Fire, Inhalation, Damage to Vehicle Surfaces Specifications AccessoriesGlossary Duty CycleAssembly Tools Required for AssemblyUnpacking Assemble WheelsInstallation Location of the Air CompressorExtension Cords Voltage and Circuit ProtectionOperation Know Your Air Compressor Description of OperationHow to Stop Before StartingCustomer Responsibilities How to StartBefore Each Start-Up To Drain Tank To Check Safety ValveAir Filter Inspection and Replacement Air Compressor Pump Intake and Exhaust Valves Service and AdjustmentsTo Replace or Clean Check Valve To Replace Regulator Storage Troubleshooting Problem Cause CorrectionPressure reading Check wiring connection AIR Compressor Diagram Parts List Key Part Number DescriptionAIR Compressor Pump Diagram KEY Part Description Limited Warranty