Craftsman Evolv 921.167500 Manual Del Operador página 9

Storage
For storing the air compressor, be sure to do the following:
1. Turn the unit off and unplug the power cord
from the receptacle.
2. Remove all air hoses, accessories, and air tools
from the air compressor.
3. Perform the daily Maintenance Schedule as
described in the table above.
4. Open the drain valve to bleed all air from the
tank.
5. Close the drain valve.
6. Store the air compressor in a clean and dry
location.
7. Unplug compressor, wrap the power cord on
handle.
Troubleshooting Guide
The air compressor should be turned off and unplugged from the power source
before any maintenance is performed as well as the air bled from the tank and the
unit allowed time to cool. Personal injuries could occur from moving parts, electrical
sources, compressed air, or hot surfaces.
PROBLEM
Unusually long air tank pump up and
recovery times.
Air leaks at the check valve or at the
pressure relief valve.
Air leaks between head and cylinder.
Air leak from safety valve.
Pressure reading on the regulated
pressure gauge drops when an acces-
sory is used.
Excessive tank pressure.
Motor will not start.
POSSIBLE CORRECTION
Remove air filter cap and inspect air filter element for restrictions.
(See air filter maintenance procedure page 6)
A defective check valve results in a constant air leak at the pres-
sure relief valve when there is pressure in the tank and the com-
pressor is shut off. Drain the tank, then remove and clean or
replace the check valve.
Be sure of proper torque on head bolts. If leak remains, contact
Sears or another qualified service dealer.
Operate the safety valve manually by pulling on the ring. If the
valve continues to leak when in the closed position, it should be
replaced.
If there is an excessive amount of pressure drop when the acces-
sory is used, replace the regulator.
Adjust the regulated pressure under flow conditions (while acces-
sory is being used). It is normal for the gauge to show minimal
pressure loss during initial use of the tool.
Move the Auto-On/Off switch to the Off position. If the unit
doesn't shut off, unplug it from the power source and contact
Sears or another qualified service dealer.
Make sure the Thermal Overload Switch on the back of the motor
is pushed in.
Make sure power cord is plugged in and the switch is on. Inspect
for the proper size fuse in your circuit box. If the fuse was tripped,
reset it and restart the unit. If repeated tripping occurs, replace
the check valve or contact Sears or another qualified service
dealer.