Ulvac UMP-40W, Instruction Manual

Page: 29 / 52

ULVAC CRYOGENICS INCORPORATED 23
COMP ALARM
Touch COMP ALARM button and the screen in Figure 9-4 is displayed.
When COMP ANS TIME OUT is red and blinking, there is a fault in the compressor.
When REF ANS TIME OUT is red and blinking, refrigerator circuit of the compressor is in an error
state.
Refer to the corresponding instruction manuals for the way to clear the alarms.
Figure 9-4 COMP ALARM
N2 ALARM
Touch N2 ALARM in ALARM MENU to display the screen in Figure 9-5.
The descriptions on the alarms are shown in Table 9-4.
Figure 9-5 N2 ALARM
Table 9-4 N2 ALARM
Icon Description Corrective Action
①
PLC UNIT
［
1
］
DSCN
Inappropriate connection with
extended unit 1
Please contact us.
②
［
1
］
KV-N3AM ADC FLR
［
1
］
KV-N3AM A/D conversion
error
③
PLC UNIT
［
2
］
DSCN
Inappropriate connection with
extended unit 2
④
［
2
］
KV-N3AM ADC FLR
［
2
］
KV-N3AM A/D conversion
error