47
[Schedule operation display]
When the compressor operates by schedules or is waiting for
the start.
The left figure is displayed when pressing schedule
operation button. If pressing START button after selecting
schedule operation mode, it operates and stops according to
the pre-defined time.
[Manual no-load operation display]
No load operation display when pressing manual no load
start button. To return to the load operation, press it again.
Stop delay time count
[Insufficient coolant, trip display]
water-cooling type
When the compressor stops due to insufficient coolant
A trip occurs when the coolant flow switch operates for 5
seconds after 15 seconds of the operation.
Notes: detected only when the main motor is rotating
[Internal pressure fall, alarm display]
Internal pressure fall alarm display appears when the internal
pressure of the compressor during operation falls under 2.0 bar.
Since oil lubrication is not sufficient, which may cause troubles in air
end and other rotating parts if the internal pressure is lowered, it is
necessary to adjust the internal pressure purge valve so that it is
maintained over 2.0 bar(internal power detection: 63A).
[High oil temperature, trip display]
Optional
When the compressor stops due to high oil temperature
“pxx” troubleshooting page is displayed
Checkpoint: a trip occurs when the oil temperature is higher
than 95
during operation.
Checkpoint : oil level, oil cooler cleaning and etc
[Data setting error, trip display]
When the values exceeds the allowable range
If the cursor blinks on a wrongly set item, please re-set the
pressure within the allowable range.
GRH3 star-delta
User’s Manual
Summary of Contents for GRH 3 series
Page 1: ...User s Manual of Compressor...
Page 60: ...60 Hanshin 8 Control System 8 1 Compressor Configuration Layout 8 Control System...
Page 62: ...62 Hanshin 8 Control System 2 Micom Controller GRH3 50A 100A...
Page 63: ...63 GRH3 25A 30A 35A 50A Star delta GRH3 star delta User s Manual...
Page 64: ...64 Hanshin 8 Control System GRH3 75A 100A Star delta...
Page 75: ...75 2 GRH3 50A GRH3 star delta User s Manual...
Page 76: ...76 Hanshin 13 Outside Drawing by Models 3 GRH3 75A 100A...
Page 77: ...4 GRH3 75W 100W GRH3 star delta User s Manual 77 Appearance...
Page 79: ......