TROUBLESHOOTING GUIDE (CONT'D)

 

PROBLEM

CAUSE

CORRECTION

Restricted air intake.

Dirty air filter.

Replace filter.

Compressor is not supplying enough air

Prolonged excessive use of air.

Decrease amount of air usage.

to operate accessories.

Compressor is not large enough for air

Check the accessory air requirement. If

 

 

requirement.

it is higher than the CFM, SCFM or pres-

 

 

 

sure supplied by your air compressor,

 

 

 

you need a larger compressor.

 

 

Restricted air intake filter.

Clean or replace air intake filter. Do not

 

 

 

operate the compressor in the paint

 

 

 

spray area.

 

 

Loose belt.

Adjust belt tension.

 

 

Hole in hose.

Check and replace if required.

 

 

Check valve restricted.

Remove and clean or replace.

 

 

Air leaks.

Tighten fittings. (See "Air Leaks" section

 

 

 

of "Troubleshooting Guide".)

 

Excessive belt wear.

Belt is too loose or tight.

Adjust tension instructions. (See "Belt

 

 

 

Asjustment or Replacement" section in

 

 

 

this manual.

 

 

Loose pulley.

Check for worn keyway or pulley bore.

 

 

 

Also check for bent motor shaft. Re-

 

 

 

place parts if necessary.

 

 

Pulley misalignment.

Motor pulley and flywheel must be in line

 

 

 

within 1/32". (See "Pulley and Flywheel

 

 

 

- Alignment" section in this manual.)

 

 

 

Squealing sound.

Loose belt.

Adjust belt tension. (See "Belt Replace-

 

 

 

ment" section in this manual.)

 

 

There is no oil in the compressor.

Add oil to top of fill hole in base.

 

 

 

Pressure reading on the regulated pres-

It is normal for "some" pressure drop to

If there is an excessive amount of pres-

sure gauge drops when an accessory is

occur.

sure drop when the accessory is used,

used.

 

adjust the regulator.

 

 

 

NOTE

 

 

 

Adjust the regulated pressure

 

 

 

under flow conditions (while the

 

 

 

accessory is being used).

 

 

 

Regulator knob - continuous air leak.

Dirty or damaged regulator internal parts.

Clean or replace regulator or internal

Regulator will not shut off at air outlet.

 

parts.

 

 

 

 

 

13

Page 13
Image 13
DeVillbiss Air Power Company MG3-OLPORT-3A, SP-100-F warranty Sure supplied by your air compressor