Ulvac C30HVRT - Troubleshooting; Problem Types

C30HVRT Compressor Unit Instruction Manual
ULVAC CRYOGENICS INCORPORATED 8-1
Section 8 Troubleshooting
8.1
Problem types ..................................................................................... 8-1
8.2 Troubleshooting procedures ............................................................... 8-2
8.3 Alarm code descriptions ...................................................................... 8-4
8.1 Problem types
C30HVRT compressor indicates the state of warning or breakdown with a buzzer sound
and STS indicators.
NOTE: When a problem occurs, check the status of STS indicators. Also, make sure that
the power-supply voltage, cooling water flow rate and its temperature, helium gas
pressure, input power cable connections, and the remote cable connections are all in an
appropriate state.
There are eight indicators called “STS” at the front panel of the compressor. Please refer
to Figure 8-1 for the alarm types of warnings and faults (The alarm status code table
shown in Figure 8-2 is labeled on the compressor body).
NOTE: Ensure that all the operation command of the compressor is OFF while trouble
shooting the compressor.
●→lights on ○→off
Figure 8-1 Alarm status table
STS
Descri
p
tion
STS
Descri
p
tion
4
TS3 Over Tem
p
erature 8 Controller Fault
3
TS1 Over Tem
p
erature
ALARM STATUS TABLE
1
Reverse Phase
,
Low Volt
5
LPS Low Helium
Pressure
2
6TS2 Over Tem
p
erature CP2 Cold Head Tri
p
7
OL1 Com
p
. O
v
er Current
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
O
p
en Phase
,