VIAIR 400P-Auto - Manual (Page 7)

TROUBLESHOOTING GUIDE:
Compressor will not run 1. No power, or power switch
in OFF position
2. Blown fuse
3. Motor overheats
1. Make sure compressor
switch is ON
2. Disconnect compressor
from power source, replace
fuse. (Refer to Specifications
section for correct
fuse amperage)
3. Let compressor cool off for
about 30 minutes to allow
thermal overload switch to reset.
Thermal overload
protector cuts out
repeatedly 1. Lack of proper ventilation or
ambient temperature is too high
2. Compressor valves failed
1. Move compressor to well
ventilated area, or area with
lower ambient temperature
2. Replace compressor
Excessive knocking
or rattling 1. Worn bearing on eccentric or
motor shaft
2. Cylinder or piston ring is worn
1. Service or replace compressor
Compressor air flow lower
than normal, or cannot
pump to higher pressures 1. Worn piston ring or inlet valve 1. Service or replace compressor
PROBLEM: POSSIBLE CAUSE(S) CORRECTIVE ACTION
400P AUTOMATIC PORTABLE COMPRESSOR
USER MANUAL