Page
15Air Techniques, Inc.
AS10, AS12, AS21, AS22, AS30,
AS40, AS50, AS70, & AS100
TROUBLESHOOTING
Problem Possible Cause Possible Solutions
1. Motor does not start. a. No electric power. a. Check circuit breaker at main power
panel.
b. Power not connected. b. Check 24 Volt remote connections.
c. Defective circuit breaker. c. Circuit breaker needs to be replaced.
Call your authorized Air Techniques
dealer for service.
2. Motor tries to start, cir-
cuit breaker trips off.
(* See bottom page 14)
a. Voltage too low.If each
compressor head runs
separately,but will not run
together, the voltage is too low.
a. AS10 and AS21 require a minimum of
108 Volts. AS12, AS22, AS30, AS50,
AS70 and AS100 require a minimum
of 198 Volts. If the voltage is below the
required minimum, a boost transformer
must be installed. Call your authorized
dealer.
b. Power supply cable too small. b. See SITE REQUIREMENTS Table.
c. Loose electrical connection. c. Call your authorized dealer for service.
3. Unusual noise. a. Intake filter(s) not seated cor-
rectly.
a. Remove filter(s). Replace if clogged or
dirty. When installing, make sure filter
chamber is clean and rubber flange on
top of filter is pushed all the way down
into the metal cylinder
b. Intake filter(s) clogged or dirty. b. Replace filter(s). ( PN 89831)
c. Motor noise. c. Call your authorized dealer for service.
d. Air leaks d. Call your authorized dealer for service.
e. Check cooling fans e. If fan is loose or broken, call your
authorized dealer for service.
4 Compressor cycles but
no pressure buildup to
115 psi.
a. Motor noise. a. Replace filter(s). ( PN 89831)
b. Leak in compressor. b. Close the storage tank outlet valve.
Check all fittings for leaks. If a leak is
found, call your authorized dealer for
service.
c. Pressure switch needs to be
adjusted.
c. Disconnect the main power supply.
Drain the storage tank slowly until a
“click” is heard. Storage tank pressure
should read 85 PSI on the pressure
gauge.
Close the tank outlet valve, turn on the
power switch and verify the pump-up
time for your model AirStar. Call your
authorized dealer if the pump-uptime is
incorrect. (See Post Installation Check
for pump-up times.)