i
u
w e rty
o
q
!1
!0
!3
!4 !5!2 !6 !8 !7
Operation Display Panel
Alarm
The basic operation of this unit is controlled through the operation panel on the front of the product.
No. Item Function
q
Digital display
(7 segments, 4 digits)
PV (Upper line)
Displays the circulating fluid current discharge temperature and pressure and alarm codes and other menu items (codes)
SV (Lower line)
Displays the circulating fluid discharge temperature and the set values of other menus
w
[TEMP] lamp Turns ON when the temperature is indicated by q. The indicated value is in (°C).
e
[PRS] lamp Turns ON when the pressure is indicated by q. The indicated value is in (MPa).
r
[FLOW] lamp Not used in this product
t
[DI] lamp Turns ON when electric conductivity is indicated by q. The indicated value is in (µS/cm).
y
[CH1/CH2] lamp Turns ON the CH that is digitally displayed
u
[REMOTE] lamp Enables remote operation (start and stop) by communication. Turns ON when operation mode is set to DIO or SERIAL
i
[RUN] lamp
Turns ON when the product is started and in operation. Turns OFF when the product is stopped. Blinks during stand-by for
stop or during anti-freezing operation
o
[ALARM] lamp Blinks with an alarm sound if an alarm should occur
!0
[ ] lamp Lights up when the surface of the fluid level indicator falls below the L level
!1
[ ] lamp Turns ON when the anti-freezing function is enabled. The [RUN] lamp i blinks during anti-freezing operation.
!2
[ ] lamp Not used in this product
!3
[RUN/STOP] key Makes the product start or stop
!4
[MENU] key
Shifts the main menu (display screen of circulating fluid discharge temperature and pressure) and other menus (for
monitoring and entry of set values)
!5
[SEL] key Changes the item in menu and enters the set value
!6
[H] key Decreases the set value
!7
[G] key Increases the set value
!8
[RESET] key Press the [H] and [G] keys simultaneously. The alarm sound is stopped and the [ALARM] lamp is reset.
Alarm
code
Explanation
AL01 Low level in tank
AL02 CH1 High circulating fluid temp.
AL05 High circulating fluid return temp.
AL06
High circulating fluid discharge pressure
AL08
Circulating fluid discharge pressure rise
AL09
Circulating fluid discharge pressure drop
AL11 Low compressor suction temp.
AL13
Abnormal high-side refrigerant pressure rise
AL15 Refrigerant leakage
AL16
Abnormal low-side refrigerant pressure rise
AL17
Abnormal low-side refrigerant pressure drop
AL18 Compressor running failure
AL19 Communication error
AL22
CH1 Circulating fluid discharge temp. sensor failure
AL23
Circulating fluid return temp. sensor failure
AL24
Compressor suction temp. sensor failure
Alarm
code
Explanation
AL25
Circulating fluid discharge pressure sensor failure
AL26
Refrigerant circuit high pressure sensor failure
AL27
Refrigerant circuit low pressure sensor failure
AL31 Contact input 1 signal detection
AL32 Contact input 2 signal detection
AL34 Electric conductivity rise
∗
3
AL35 Electric conductivity decrease
∗
3
AL36 Electric conductivity sensor failure
∗
3
AL37
Compressor discharge temp. sensor failure
AL38 Compressor discharge temp. rise
AL43 Fan failure
∗
4
AL46 Compressor inverter error
∗
1
AL47 Pump running failure
AL48 Pump inverter error
∗
2
AL50
CH2 Circulating fluid temp. is too high
AL51
CH2 Circulating fluid discharge temp. sensor failure
Alarm
code
Explanation
AL52 Memory error 1
AL53 Memory error 2
AL56 Abnormal missing-phase/anti-phase
AL57
Compressor inverter communication error
∗
1
AL58 Pump inverter parameter error
∗
2
AL59 Pump inverter communication error
∗
2
AL62 Internal communication error
AL63
Abnormal high-side refrigerant pressure rise
AL64 Power supply failure
AL65
Refrigerant high pressure switch operated
AL66
Compressor inverter parameter error
∗
1
∗
1 Option C only
∗
2 Option P only
∗
3 Occurs only when the electric conductivity
control function is enabled
∗
4 Not generated for the water-cooled type
∗
For details, read the Operation Manual.
17
HRLE Series
Compact Dual/Basic Type for Lasers
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