i
u
w e r t y
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 (
µ
S/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