Refrigerant Recovery Unit
20
2020-9000 Rev 0
Section 3. Maintenance and Troubleshooting
3.1. Troubleshooting
Fault
Possible Cause(s)
Solution(s)
Compressor
won’t start
High pressure shut off
(Red alarm light)
Lower pressure below 435 psi
(30 bars)
Motor failure or other
component damage.
Replace the components.
Factory service is required.
80% shut-off cable is
connected to unit, but
not to recovery cylinder
Connect to recovery cylinder or
remove from unit.
Low recovery
speed
Recovery tank pressure is
too high.
Cooling down the tank can
help to reduce the pressure.
The piston ring of the
compressor is damaged.
Replace components.
Factory service is required.
Dirty in-line filter or inlet
filter screen
Clean/replace inlet filter
screen. Replace in-line filter.
Unit doesn’t
pull a
vacuum
Loose hoses.
Tighten the hose connections.
Leakage in the unit.
Replace components.
Factory service is required.
Compressor
starts, but
stops within
a few
moments
High pressure shut off
due to wrong operation,
such as outlet valve not
open, or recovery tank
valve not open.
Carefully review the operation
manual and follow the
instructions while operating.
Motor thermal protector
shuts off.
Compressor will restart
automatically.
Circuit breaker shuts off.
Wait 5 minutes, reset the
circuit breaker, then restart.
80% shut-off protection
(red alarm light on).
Replace full recovery tank with
an empty recovery tank.
Recovery is complete.
Unit is under low
pressure protection
(green alarm light on).
Refer to the purge section.
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.com
1.800.561.8187
