Stinger Refrigerant Recovery Unit User Manual page 28

PROBLEM
Compressor starts
but cuts out within a
few minutes;
pressure indication
on high pressure
gauge is high; status
LED glows red
Status LED still
glows red after high
pressure condition
has been cleared
Compressor starts
but cuts out within a
few minutes;
pressure indication
on low pressure
gauge is low; status
LED is OFF
AC power switch is
ON, but fan, com-
pressor, and status
LED are all OFF
Status LED still
glows red after
changing recovery
tanks
AC power switch is
ON but cooling fan
not running
Unit overheats
28
CAUSE
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
High pressure switch was once
activated causing high
pressure circuit to latch ON
Inlet valve is in PURGE or
CLOSED position during
recovery and low pressure
switch activates
Blocked intake hose
Power cord not attached
No voltage at AC outlet
Circuit breaker has opened
80% tank full switch has been
activated causing tank full
circuit to latch ON
Defective fan
Obstruction in fan blades
Excessive suction pressure
due to high ambient
temperature
ACTION
Rotate function valve to
RECOVER.
Rotate outlet valve to OPEN
position.
Open tank vapor valve.
Check and clear blockage.
Bleed air from system/tank.
Turn unit OFF and then back
ON.
Rotate inlet valve to
RECOVER.
Check and clear blockage.
Attach power cord.
Verify voltage at job site.
Identify cause of breaker
activation, rectify and reset.
Turn unit OFF and then back
ON.
Replace fan.
Remove obstruction.
Reduce inlet pressure below
80 psi by throttling the inlet
valve.
2090-0217 Rev 6