Hanshin Machinery GRH 3 series, Руководство пользователя

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52 / HanShin
6. Troubleshooting
6-2 Trouble Causes and Measures
1. Fan motor overload, trip
Causes: fan motor overload or wrong connection of fan motor power cable
Checkpoint: check the current and electric wiring
If overload is found as a result of measuring the current,
check it as follows.
How to reset: press and then press [STOP] button on Micom.
Motor overcurrent
-Check the fan rotation
by rotating it with
hands
-Check the R/S/T phases
of the power cable.
If the current is normal, check the
electric wiring
-If 97-98 is off after the power-off, the status
is normal
-Check the current value setting( ) to see
whether the motor is set by the rated
current.
2. Main motor overload, trip
Causes: main motor overload, 52 & 42 magnet contact point damage, voltage drop
Checkpoint: Check the main motor rotation by rotating the air end with hands.
How to reset: Press [STOP] button of Micom after taking a corrective measure.
3. High discharge air temperature, trip
Causes: high discharge air temperature
Checkpoint: refer to page 52 for compressor inhalation(ambient)
temperature, oil level, oil cooler and cleaning oil cooler.
How to reset: Take a corrective measure and press [STOP] button of Micom.
4. Lead-in power reverse phase, trip(option)
-.With 49M2(EOCR), check whether the trip lamp is on.
In case it’s on, it means overload, checking the main
motor and supply voltage.
-.Check the power cable connection of 42&52 and the
magnet’s contact point.
52 / Hanshin
Cause : Input power reverse phase detected or 49M2 troubled
How to check : Please replace the input cable if the red lamp
and green lamp of 49M2 flicker by turns. Please
refer to page 36 when replacing. If no. 97
terminal and no. 98 terminal were contacted
when the power is out, 49M2 is bad.
How to reset : Make it corrected and push the [STOP] button
of Micom
O.L/Fault
LED
Test/Reset button
Time knob
97~98 terminals
RC(A)
knob
49M2
(EMPR-Reverse phase detector)