18
Troubleshooting
PROBLEM
CAUSE
ACTION
AC power switch is ON,
but fan, compressor,
and status LED are all
OFF
Power cord not attached
No voltage at AC outlet
Circuit breaker has opened
Attach power cord.
Verify voltage at job site.
Identify cause of breaker
activation, rectify and reset.
Status LED glows red –
Compressor does not
start or stops running
Optional 80% tank full shutoff cord
not connected to tank
Tank is full and float switch has
opened.
Float switch in tank is open.
High pressure switch has activated
due to discharge pressure
exceeding 550 psi.
Compressor motor thermal overload
has tripped
Electronics failure in motor, or on
printed circuit board
Connect yellow STI cord to tank. If
tank does not have a float switch,
short cord and use a scale.
Change tanks. To restart, power
unit off and on again.
Check tank switch with multi-meter.
Reduce pressure: Check for
restrictions in discharge line and
that recovery tank valve is open;
rotate function valve to PURGE
and back to RECOVER; check
that outlet valve is OPEN. To
restart, power unit off and on
again.
Turn OFF unit and allow motor to
cool down for at least 15 minutes.
Factory service required.
Status LED is OFF –
Fan is running, but
compressor is OFF
Low pressure switch has activated
due to inlet port reaching a vacuum
of 13" Hg during recovery process
Low pressure switch is still activated
even after inlet port has been
exposed to atmospheric pressure
System evacuation is complete.
Apply 1 – 2 psi pressure to inlet
port to reset low pressure switch.
Compressor starts but
cuts out within a few
minutes; pressure
indication on high
pressure gauge is high;
status LED glows red
Function valve is in PURGE position
during recovery and high pressure
switch activates
Outlet valve is not open and high
pressure switch activates
Recovery tank valves closed
Blocked discharge hose
Air in system/tank
Rotate function valve to
RECOVER.
Rotate outlet valve to OPEN
position.
Open tank vapor valve.
Check and clear blockage.
Bleed air from system/tank.
Summary of Contents for bacharach
Page 20: ...20 Schematic Diagram...
Page 22: ...22 STINGER Exploded View...
Page 24: ...24 Compressor Exploded View...
