C30VR Compressor Instruction Manual
1-10
ULVAC CRYOGENICS INCORPORATED
⑥
ALARM STATUS TABLE
This shows a list of alarm codes indicated by the STS (Status) LED indicators for alarm
indication. Refer to “Section 8.3 Alarm code descriptions” for troubleshooting
procedure of each alarm code.
All status display LED indicators will remain unlit when there is no problem.
⑦
STATUS DISPLAY and RESET BUTTON
There are two kinds of status display, 4 or 6 LED indicators for the operation status of
the compressor and 8 STS LED indicators for alarm indication. The number of LED
indicators for the operation status is up to 6 depending on how many refrigerators are
connected to the compressor (See Figure 1-3 and 1-4).
「
PWR
」
indicator (RED) lights up when the compressor is powered ON.
「
RDY
」
indicator (GREEN) lights up when the compressor is ready for operation.
「
RUN
」
indicator (GREEN) lights up when the compressor is in operation.
「
CH1
」
indicator (GREEN) lights up when refrigerator No.1 is in operation.
「
CH2
」
indicator (GREEN) lights up when refrigerator No.2 is in operation.
「
CH3
」
indicator (GREEN) lights up when refrigerator No.3 is in operation.
NOTE: “CH2” and “CH3” indicators are effective only for the C30MVR which can be
connected to multiple refrigerators.
One or more STS LED indicators for alarm indication will light up when malfunction of
the compressor is detected. Hereafter this event is referred to as alarm in this manual.
When an alarm lights up, the buzzer will be activated as well.
In an event of alarm, check the status with the ALARM STATUS TABLE (
⑥
in Figure
1-6). Refer to “section 8.3 Alarm code descriptions” for more details.
STS LED indicators and the buzzer will keep the alarm status even
after the alarm
event has been cleared.
To clear the alarm status and stop the buzzer, push the reset button through the “RST”
hole with a thin rod.
Then, the “RDY” indicator will light up again.
Listed below are the descriptions of components on the rear panel of the compressor.
⑧
INPUT POWER CABLE RECEPTACLE
(
INPUT POWER
)
Connect the power cable plug to this receptacle.
Refer to “Section 4.6.1 connecting the input power cable” for how to connect the power
cable.
The Compressor unit is supplied main power from the distribution panel of the customers’
system. The distribution panel must have an appropriate circuit breaker for the
CAUTION
compressor in accordance with the national and local codes and standards of the
applicabl country.
e
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