Troubleshooting Guide - VIAIR 330C-IG User Manual

Tank pressure drops when
compressor (s) shut off
Compressor runs
continuously and air flow
lower than normal
Compressor runs
continuously causing
safety valve (if equipped)
to open
Excessive moisture
in discharge
Compressor will not run
Thermal overload
protector cuts
out repeatedly
Excessive knocking
or rattling
CAUTION: NEVER DISASSEMBLE COMPRESSOR WHILE
330C-IG - 450C-IG COMPRESSOR KIT

TROUBLESHOOTING GUIDE:

1. Loose drain cock
2. Check valve leaking
3. Loose connections
1. Excessive air usage
2. Loose connections
3. Worn piston ring or inlet
valve.
4. Clogged air filter element
1. Bad pressure switch
2. Defective safety valve
1. Excessive water in air tank
2. High humidity
1. No power, or power switch
in OFF position
2. Blown fuse
3. Motor overheats
4. Faulty pressure switch.
1. Lack of proper ventilation or
ambient temperature too high
2. Compressor valves failed
1. Loose mounting bolts
2. Worn bearing on eccentric or
motor shaft
3. Cylinder or piston ring is worn
COMPRESSOR IS PRESSURIZED.
USER MANUAL
1. Tighten drain cock
2. Replace check valve or
compressor(s)
3. Check all connections with
soap and water solution
and tighten
1. Decrease air usage
2. Check all connections with
soap and water solution
and tighten.
3. Repair or replace compressor
4. Replace air filter element
1. Replace pressure switch
2. Replace safety valve
1. Drain tank, tilt tank to drain.
Drain tank more frequently
2. Move compressor to area
with less humidity, or use air
line filter.
1. Make sure compressor
switch is ON
2. Disconnect compressors
from power source, replace
fuse. (Refer to Specifications
section for correct fuse
amperage.)
3. Let compressors cool off for
about 30 Minutes to allow
thermal overload switch reset.
4. Replace pressure switch
1. Move compressor to well
ventilated area, or area with
lower ambient temperature
2. Repair or replace compressor
1. Tighten mounting bolts
2. Repair or replace compressor
3. Repair or replace compressor