Troubleshooting Protective Device - Hitachi NEXT Series Instruction Manual

4. TROUBLESHOOTING
If a shutdown, alarm, problem or failure occurs, investigate the cause and take proper corrective action
before restarting. If there is any questions or comments, contact the local HITACHI distributor/master
dealer or representative office.
4.1 Protective Device
The air compressor is provided with the protective devices listed below. If shutdowns are detected by these protective
devices, remove the cause with referring to the LCD monitor indication and this manual, and then press the RESET
button to clear the shutdown indication. Depending on the type of shutdown, contact the local HITACHI distributor/
master dealer or representative office.
■ When connecting the power
LCD Indication
Heading Trouble Description
Reversal phase connection
(Note 3)
POWER
Phase-lacking connection
Instantaneous power
interruption
Brief instantaneous power
interruption
■ During Operation (Note 1)
LCD Indication
Heading Trouble Description
1st stage discharge air
temperature
(HIGH DIS. TEMP . 1)
2nd stage discharge air
temperature
(HIGH DIS. TEMP . 2)
Interstage Pressure
(INTSTG. P)
2nd stage suction air temperature
(2ND SUCT. TEMP)
Oil temperature
(OIL HIGH TEMP)
Oil pressure
(OIL LOW PRESS)
SHUTDOWN
Overloading (Main motor)
(OVERLOAD: MAIN)
[Fixed speed and Vtype]
Overloading (Main motor)
(OVERLOAD: MAIN)
[Fixed speed type]
Overloading (Fan motor)
(OVERLOAD: SUB)
Overloading (Fan motor)
(CONTACTOR ERR: 52)
[Water-cooled type] [Vtype]
Answer error of 52
(CONTACTOR ERR: 52)
Answer error of 42
(CONTACTOR ERR: 52)
36
CAUTION
Failure
What and How to Detect
Light
Detected for 3 seconds
SHUTDOWN
after connecting the
Blinks
power
Power interruption for
1 to 5 sec.
-
Power interruption for
1 sec or less.
Failure
What and How to Detect
About 437 [419]℉ SHUTDOWN
〈225 [215]℃〉 or higher
For working pressure of
100psi 0.69 MPa : About 446 [428]℉
SHUTDOWN
〈230 [220]〉 ℃ or higher
For working pressure of
125 psi 〈0.86 MPa〉 : About 500 [482]℉
〈260 [250]℃〉 or higher
For fi xed Speed type: 39 psi
SHUTDOWN
〈0.27 MPa〉 or higher
For Vtype : 44 psi 〈0.30 MPa〉 or
higher
163 [158]℉ SHUTDOWN
73 [70]℃ or higher
163 [158]°F SHUTDOWN
73 [70]℃ or higher
For fi xed Speed type:
12 psi 〈0.08 MPa〉 or lower
SHUTDOWN
For Vtype:12 psi 〈0.08 MPa〉 or
lower (operating Freq. 45 Hz or
higher) 6 psi 〈0.04MPa〉 or lower
(operating Freq. Less than 110Hz)
SHUTDOWN
Detected during operation
239℉ 〈115℃〉 or more on the
SHUTDOWN
motor surface of load side
bearing.
SHUTDOWN
Detected during operation
SHUTDOWN
Detected during operation
Detected during operation or SHUTDOWN
Emergency stop in Y.
Detected during operation or SHUTDOWN
emergency stop in Δ
Detector Shutdown What Actions to Take
Reconnect the power cable tightly, check the
power supply and incoming power for loose
CPU
Yes connections and change the connection
(Note 2)
location of 2 of the 3 phases, be sure to follow
all electrical safety procedures. (
CPU Reconnect the power cord tightly, check the
Yes
(Note 2) power supply, and take a corrective remedy.
CPU Restart page 39
CPU Restart page 39
Detector Shutdown What Actions to Take
Light
4.2
Thermistor Yes
Blinks
4.2
Thermistor Yes
Blinks
Pressure
4.2
Yes
Blinks sensor
4.2
Thermistor Yes
Blinks
4.2
Thermistor Yes
Blinks
Pressure
4.2
Yes
Blinks sensor
Thermal
4.2
Yes
Blinks relay
Thermostat
4.2
for Main Yes
Blinks
Motor
Thermal
4.2
Yes
Blinks relay
Thermal
4.2
Yes
Blinks relay
Disconnect the power. Check
CPU Yes the 52 for proper operation and
Blinks
the wires for tightness .
Disconnect the power. Check the
CPU Yes 6 and 42 for proper operation
Blinks
and the wires for tightness.
How to History Error
Reset code code
01 E0.01
Press RESET
button.
4.2)
02 E0.02
03 E0.03
-
04 E0.04
How to History Error
Reset code code
Press RESET
55 E0.55
button.
Press RESET
56 E0.56
button.
Press RESET
52 E0.52
button.
Press RESET
5B E0.5B
button.
Press RESET
58 E0.58
button.
Press RESET
5C E0.5C
button.
Press RESET
17 E0.17
button.
Press RESET
17 E0.17
button.
Press RESET
53 E0.53
button.
Press RESET
51 E0.51
button.
Press RESET
51 E0.51
button.
Press RESET
16 E0.16
button.