Hitachi SRL Series, Инструкция по эксплуатации

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Troubleshooting
29
● Use the following table for the proper corrective actions to any of the SRL air compressor alarms.
Type of Problem Probable Cause Corrective Action
Electric Motor will
not run
Power supply is turned off Turn on the power supply.
Wires are broken Replace and/or fix the wiring.
Phase reversal connection Reconnect the wiring (see page 9).
Printed circuit board failure
Replace the printed circuit board (Please contact the local
Hitachi distributor).
Motor breaker trips ("E.CO." is
indicated on digital display) Please contact the local Hitachi distributor to eliminate the
probable cause and reset the thermal relay.
Scroll head and/or electric motor
failure Replace the scroll head and/or electric motor (Please
contact the local Hitachi distributor).
Excessive voltage drop-Improper
wire thickness
Replace with a properly sized wire.
Power supply panel circuit breaker
has tripped Eliminate the cause of failure and reset the circuit breaker
(Please contact the local Hitachi distributor).
P o w e r s u p p l y p a n e l f u s e i s
damaged
Replace the fuse.
Emergency stop switch has been
pressed
Reset the emergency stop switch.
L o w d i s c h a r g e
pressure
Leak in the internal air compressor
piping
Re-tighten all of the air compressor pipe fittings.
Safety relief valve leaks Replace the safety relief valve.
Clogged and/or dirty intake air
filter
Replace the intake air filter element.
Check valve failure
Replace the check valve (Please contact the local Hitachi
distributor).
H i g h d i s c h a r g e
pressure
Printed circuit board failure
Replace the printed circuit board (Please contact the local
Hitachi distributor).
Electromagnetic contactor failure
Replace the electromagnetic contactor (Please contact the
local Hitachi distributor).
Excessive noise is
generated
Improper installation
Install the air compressor on level ground according to the
installation procedure on page 6.
T r a n s p o r t f i x t u r e s w e r e n o t
removed
Remove the transport fixtures (see page 4).
Rubber vibration isolators are
worn Replace the rubber vibration isolators (Please contact the
local Hitachi distributor).
T h e S R L r e v e r s e r o t a t e s f o r
longer than 3 seconds after it has
stopped
Replace the check valve (Please contact the local Hitachi
distributor).
Loose V-belt Re-tighten and/or replace the V-belt.
Scroll head failure
Replace the scroll head (Please contact the local Hitachi
distributor).
Electric motor failure
Replace the electric motor (Please contact the local Hitachi
distributor).
Overheating of
the Electric Motor
Motor bearing has failed and/or
the seal has shows wear Replace the electric motor (Please contact the local Hitachi
distributor).
Short Circuited Motor
Replace the electric motor (Please contact the local Hitachi
distributor).
● When performing the troubleshooting, make sure to press the Stop switch, turn off the main power
supply and open all the valves so that no residual pressure remains.
● The inside of the air compressor may be extremely hot right after the operation. Therefore, wait at least
30 minutes before performing the troubleshooting.
WARNING