Ulvac C30HVRT - Page 28

Section 1 C30HVRT Compressor Description
1-8
ULVAC CRYOGENICS INCORPORATED
⑦STATUS DISPLAY and RESET BUTTON
There are two kinds of status display, 4 LED indicators for the operation status of the
compressor and 8 STS LED indicators for alarm indication.
「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 cryocooler is in operation.
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
1-3). 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.
⑧INPUT POWER CABLE RECEPTACLE （INPUT POWER）
Connect the power cable plug to this receptacle.
Refer to “Section 4.5.1 connecting the input power cable” for how to connect the power
cable.
⑨CIRCUIT PROTECTOR (Inside the panel)
The circuit protector is installed in order to protect wiring and connectors from the
over-current produced by an electrical overload or short circuit.
The circuit protector is set to ON when it is shipped.
Compressor is supplied with main power from the equipment-side distribution panel. The
distribution panel must have an appropriate circuit breaker for the compressor in
CAUTION
accordan e with the national and local codes and standards of the country where the
equipment is installed.
c
WARNING
Circuit protector must be operated by authorized electrician familiar with the structure and
the risk of this equipment. Failure to observe this warning may result in severe bodily
injury or fatal accident.